EP3577706A1 - Matériau d'électrode, électrode et batterie tout solide comprenant un oxyde complexe de structure olivine - Google Patents
Matériau d'électrode, électrode et batterie tout solide comprenant un oxyde complexe de structure olivineInfo
- Publication number
- EP3577706A1 EP3577706A1 EP18748545.3A EP18748545A EP3577706A1 EP 3577706 A1 EP3577706 A1 EP 3577706A1 EP 18748545 A EP18748545 A EP 18748545A EP 3577706 A1 EP3577706 A1 EP 3577706A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- positive electrode
- electrode material
- binder
- complex oxide
- lithium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000010450 olivine Substances 0.000 title claims abstract description 13
- 229910052609 olivine Inorganic materials 0.000 title claims abstract description 13
- 239000007772 electrode material Substances 0.000 title abstract description 10
- 239000007774 positive electrode material Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 9
- 150000003624 transition metals Chemical class 0.000 claims abstract description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 34
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 29
- 239000011230 binding agent Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 26
- 239000004020 conductor Substances 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 12
- 239000004917 carbon fiber Substances 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 claims description 12
- 229920000570 polyether Polymers 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 229920001451 polypropylene glycol Polymers 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 9
- 239000006229 carbon black Substances 0.000 claims description 9
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical group [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000002243 precursor Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 claims description 7
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical group [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 claims description 7
- 239000002491 polymer binding agent Substances 0.000 claims description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000002134 carbon nanofiber Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 229910013188 LiBOB Inorganic materials 0.000 claims description 4
- 229910010941 LiFSI Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 claims description 4
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 claims description 4
- 239000011859 microparticle Substances 0.000 claims description 4
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 239000003232 water-soluble binding agent Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 229910013063 LiBF 4 Inorganic materials 0.000 claims description 3
- 229910012223 LiPFe Inorganic materials 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000002174 Styrene-butadiene Substances 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 229920006168 hydrated nitrile rubber Polymers 0.000 claims description 3
- 229910000398 iron phosphate Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims 1
- 239000005518 polymer electrolyte Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910052493 LiFePO4 Inorganic materials 0.000 description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 229910003002 lithium salt Inorganic materials 0.000 description 6
- 159000000002 lithium salts Chemical group 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 239000011149 active material Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000007606 doctor blade method Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910013075 LiBF Inorganic materials 0.000 description 1
- 229910010710 LiFePO Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RLTFLELMPUMVEH-UHFFFAOYSA-N [Li+].[O--].[O--].[O--].[V+5] Chemical class [Li+].[O--].[O--].[O--].[V+5] RLTFLELMPUMVEH-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011262 electrochemically active material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006138 lithiation reaction Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910000686 lithium vanadium oxide Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present application refers to the field of electrochemical cells, more particularly to all-solid type batteries and to the use of charged olivine cathode.
- a battery operates by reversibly circulating ions between a negative electrode and a positive electrode, through an electrolyte comprising a salt, for example lithium, sodium, or potassium, in solution in a liquid solvent, solid polymer or gel and / or solid ceramic type.
- a salt for example lithium, sodium, or potassium
- the negative electrode is generally constituted by a sheet of lithium, of lithium alloy or of a lithium-containing intermetallic compound.
- the negative electrode may also consist of a material capable of reversibly inserting lithium ions such as, for example, graphite or an oxide of a metal, the insertion material being used alone or in the form of a composite material containing, for example, at least one binder and an agent conferring electronic conduction such as a carbon source.
- complex oxides have been studied as active material for the positive electrode, acting as a reversible insertion material for lithium ions. Mention may in particular be made of compounds which have an olivine structure and which correspond to the formula L1MXO4, where M represents a transition metal or a transition metal mixture and X is a member selected from S, P, Si, B and Ge. These complex oxides are generally used in the form of particles coated with carbon and / or bound together by carbon-carbon bonds.
- the use of a cathode comprising LiFePO4 makes the assembled battery is in the discharged state, which makes these batteries less safe after assembly.
- the safety of a battery using this cathode in a cell configuration with lithium metal is of concern, the regulations for its transport are then more stringent.
- the first charge induces a lithium plating on the metal anode, which involves the deposition of a thin layer of Li on an already passivated surface. This plating will affect the stability of the lithium layer depending on the cycling of the battery, resulting in a relatively limited reversibility.
- the cost of this material could be further reduced.
- the present application relates to a positive electrode material comprising at least one complex oxide of olivine structure, the complex oxide comprising a transition metal in the oxidation state III, for example a complex oxide of formula MXO4, where M is at least one oxidation transition metal III (such as Fe, Ni, Mn or Co or a combination of at least two thereof), and X is selected from S, P elements , Si, B and Ge, for example P or Si.
- the complex oxide is iron phosphate (III) of olivine structure, where the iron (III) can be partly replaced by a a member selected from Ni, Mn, and Co, or a combination thereof, for example, the complex oxide is FePO4.
- the complex oxide present in the electrode material is in the form of particles, for example, microparticles and / or nanoparticles.
- the particles comprise microparticles.
- the particles comprise nanoparticles.
- the electrode material as defined herein may further comprise an electronically conductive material (such as a carbon source).
- electronically conductive material include carbon black, Ketjen® carbon, Shawinigan carbon, graphite, graphene, carbon nanotubes, carbon fibers (such as gas-phase carbon fibers (VGCF) ), non-powdery carbon obtained by carbonization of an organic precursor, or a combination of two or more thereof.
- the electronically conductive material comprises carbon black.
- the electronically conductive material comprises carbon fibers.
- the electronically conductive material comprises carbon black and carbon fibers.
- the electrode material as defined herein optionally comprises a binder, this binder comprising, for example, a linear, branched and / or crosslinked linear polyether polymer binder, a water-soluble binder, a fluorinated polymer binder, or one of their combinations.
- a binder comprising, for example, a linear, branched and / or crosslinked linear polyether polymer binder, a water-soluble binder, a fluorinated polymer binder, or one of their combinations.
- the linear, branched and / or crosslinked polyether polymer binder can be chosen from polymers based on polyethylene oxide (PEO), on poly (propylene oxide) (PPO) or a mixture of the two , optionally comprising crosslinkable units.
- the binder soluble in water may be selected from SBR (styrene-butadiene rubber), NBR (acrylonitrile-butadiene rubber), HNBR (hydrogenated NBR), CHR (epichlorohydrin rubber), ACM (acrylate rubber), and their mixtures, optionally comprising CMC (carboxymethylcellulose).
- SBR styrene-butadiene rubber
- NBR acrylonitrile-butadiene rubber
- HNBR hydrogenated NBR
- CHR epichlorohydrin rubber
- ACM acrylate rubber
- CMC carboxymethylcellulose
- the fluorinated polymer binder may be chosen from PVDF (polyvinylidene fluoride) and PTFE (polytetrafluoroethylene).
- the positive electrode material comprises a crosslinked binder, the complex oxide FePO 4, a salt and an electronically conductive material as defined herein.
- salt is a lithium salt.
- the present application also relates to an electrode preparation method comprising an electrode material as described herein, and comprising the steps of: a) mixing the complex oxide and an electronically conductive material in the presence of a solvent ; b) spreading the mixture obtained in (a) on a support (such as a current collector); and c) drying the spread mixture.
- step (a) of the process further comprises the addition of a binder or a precursor of polymeric binder (eg monomer or oligomer).
- step (a) may comprise the addition of a polymeric binder precursor based on a polyether polymer and a crosslinking agent, the process comprising a crosslinking step before, during or after the step ( vs).
- Positive electrodes comprising an electrode material as defined herein or obtained by a method of the present application are also contemplated, as well as electrochemical cells comprising such a positive electrode, an electrolyte film, and a negative electrode compatible with the active material of the positive electrode, that is to say with the complex oxide.
- the negative electrode of the electrochemical cell comprises an alkali metal film such as sodium or lithium or an alloy thereof, for example a metal lithium film or an alloy comprising at least 90 % by weight of lithium.
- the negative electrode comprises an anode complex oxide compatible with the complex oxide such as a lithium titanate.
- the electrolyte film of the electrochemical cell comprises a salt in solution in a solid, polar and solvating polymer.
- the salt may be selected from LiTFSI, LiPF6, LiDCTA, LiBETI, LiFSI, LiBF 4 , LiBOB, and combinations thereof.
- solid, polar and solvating polymers include linear, branched and / or crosslinked polyether polymers, such as those based on polyethylene oxide (PEO), poly (propylene oxide) (PPO), or on a mixture or a copolymer of both, optionally including crosslinkable units.
- the binder of the positive electrode is composed of a polymer identical to that used in the composition of the electrolyte film.
- FIGURES Figure 1 shows the variation of potential (V) versus time for a cell comprising LiFePO4 (LH6243C PT-945), in comparison with a cell comprising FeP0 4 (LH6243D PT-2276, LH6243E PT -2276, and LH6243F PT- 2276) according to some embodiments of the present technology (see Example 2).
- Figure 2 demonstrates the potential versus time variation for a first charge for a battery comprising LiFePO4 (LH6243C PT-945), compared to a battery comprising FePO4 (LH6243E PT-2276) according to an embodiment of the present technology as described in Example 2.
- Figure 3 illustrates the Ragone diagram, i.e. the change in capacity (mAh / g) versus discharge regime for a cell comprising LiFePO4 (LH6243C PT-945), compared with a stack comprising FePO4 (LH6243D PT-2276) according to an embodiment of the present technology as described in Example 2.
- Figure 4 shows the capacity (solid symbols) and percentage efficiency (empty symbols) versus the cycle number for FeP04 (LH6243D PT-2276) according to an embodiment of the present technology as described in Example 2 in comparison with LiFePO4 (Reference).
- the present application relates to the use of a complex oxide (for example of olivine structure), the complex oxide comprising a transition metal in the oxidation state III, as electrochemically active material in the preparation of positive electrodes of batteries.
- a complex oxide for example of olivine structure
- the complex oxide comprising a transition metal in the oxidation state III
- the present application relates to a positive electrode material comprising at least one complex oxide of formula MXO4, wherein M is at least one oxidation transition metal III, for example Fe, Ni, Mn or Co or combinations thereof and X is selected from S, P, Si, B and Ge, for example, X is P or Si, preferably X is P.
- the complex oxide is iron phosphate (III) of olivine structure.
- the use of a complex oxide as defined in the present application makes it possible, inter alia, to obtain a safer battery assembled in the discharged state (for example Li / SPE / FeP04), the use of materials less expensive, the use of a non-lithiated cathode, and / or the removal of lithium plating on the pre-passivated lithium metal anode during the first charge.
- the first electrochemical activity is a discharge, i.e. lithiation of olivine comprising an oxidation metal III (such as FePO4). This step allows to deposit a layer of lithium freshly dissolved lithium metal during the first charge of the battery.
- the cost of the material can also be reduced by the removal of an atom (eg, Li) from the olivine structure normally used in manufacturing.
- an atom eg, Li
- Li an atom
- the present application demonstrates that this atom is not necessary for the manufacture of a positive electrode material of a battery comprising a metal anode such as lithium.
- the positive electrode material as described herein may comprise, in addition to the complex oxide particles (e.g., microparticles and / or nanoparticles) defined above, an electronically conductive material such as a carbon source, including, for example, carbon black, Ketjen ® carbon, Shawinigan carbon, graphite, graphene, carbon nanotubes, carbon fibers (such as gas-phase carbon fibers (VGCF)), non-powdery adherent carbon obtained by charring an organic precursor, or a combination of two or more thereof.
- a carbon source may also be present as a carbon coating on the complex oxide particles.
- the positive electrode material may also include a binder.
- Non-limiting examples of binders include linear, branched and / or crosslinked polymeric polyether binders (e.g., polymers based on polyethylene oxide (PEO), or poly (propylene oxide) (PPO) or a mixture of both (including an EO / PO co-polymer), and optionally comprising cross-linkable), water-soluble binders (such as SBR (styrene-butadiene rubber), NBR (acrylonitrile-butadiene rubber), HNBR (hydrogenated NBR), CHR (epichlorohydrin rubber), ACM (acrylate rubber) ), or fluoropolymer-type binders (such as PVDF (polyvinylidene fluoride), PTFE (polytetrafluoroethylene)), and combinations thereof).
- Some binders, such as those soluble in water may also include an additive such as CMC (carboxymethylcellulose).
- Additives may also be present in the positive electrode material, such as salts, for example lithium salts in the case of lithium or lithium-ion batteries (such as LiTFSI, LiPFe, LiDCTA, LiBETI, LiFSI, LiBF 4 , LiBOB, etc.), or inorganic particles of ceramic or glass type, or other compatible active materials (for example, sulfur).
- salts for example lithium salts in the case of lithium or lithium-ion batteries (such as LiTFSI, LiPFe, LiDCTA, LiBETI, LiFSI, LiBF 4 , LiBOB, etc.), or inorganic particles of ceramic or glass type, or other compatible active materials (for example, sulfur).
- the electrode material comprises between 50% and 95% by weight of the complex oxide, or between 60% and 80% by weight of the complex oxide.
- the material may also comprise between 5% and 40% by weight of binder, or between 15% and 35% by weight of binder.
- the electrode material may also comprise 10% by weight or less of a salt, for example, between 3% and 7% by weight of salt.
- the material may comprise 10% by weight or less of an electronically conductive material or a mixture of electronic conductive materials, for example, between 3% and 7% of electronically conductive material or a mixture of electronic conductive materials.
- the electronically conductive material mixture comprises carbon black and carbon fibers (such as VGCF), which mixture may comprise both conductive materials in any proportion, for example in a weight ratio of about 1: 1.
- a complex oxide as defined herein may be mixed with an electronically conductive material in the presence of a solvent and spread on a support, for example a current collector, and then be dried.
- This mixture may also include one of the binders described herein or a polymer binder precursor (eg, monomer or prepolymer before crosslinking).
- the spreading mixture may also optionally include additional components such as inorganic particles, ceramics, salts, and the like.
- the positive electrode can be used in a battery with any type of negative electrode electrochemically compatible with the active material of the positive electrode.
- the negative electrode may comprise an alkali metal film (such as sodium or lithium), for example, a metal lithium film or an alloy comprising at least 90% by weight of lithium, or at least 95% lithium.
- An example of a negative electrode comprises a bright lithium film prepared by rolling between rolls of a lithium strip. The produced film is then quickly combined with the other elements of the stack.
- the lithium film comprises a thin layer (eg 50 ⁇ or less) and a passivation constant.
- the lithium film is prepared according to the method used in PCT Application No.
- WO2008 / 009107 may also include the use of a lubricating agent, as described in PCT Application No. WO 2015/149173, at its training.
- Other negative electrode materials include complex anode oxides such as lithium titanates, or lithium vanadium oxides.
- the electrolyte is preferably a solid polymer electrolyte (SPE) formed of a thin ion conductive polymer layer.
- SPE solid polymer electrolyte
- Examples of solid polymeric electrolytes may generally comprise one or more crosslinked or non-crosslinked polar solid polymers and alkali metal salts, for example, lithium salts such as LiTFSI, LiPFe, LiDCTA, LiBETI, LiFSI, LiBF, LiBOB, etc. .
- Polymers of the polyether type such as linear, branched and / or crosslinked polymers based on polyethylene oxide (PEO), poly (propylene oxide) (PPO), or a mixture of both ( polymer blend or co-polymer EO / PO) can be used, but several other polymers compatible with lithium are also known for the production of EPS.
- polymers include star-shaped or comb multi-branched polymers such as those described in PCT Publication No. WO2003 / 063287 (Zaghib et al.).
- Other additives may be present in the electrolyte such as glass particles, ceramics, for example nano-ceramics (such as Al 2 O 3, ⁇ 2, SiO 2, and other similar compounds) may be added to the matrix.
- the binder used in the cathode material comprises the same polymer as that used in the solid polymer electrolyte and is of the polyether polymer type.
- the electrochemical cells described herein and the batteries comprising them can be used, for example, in electric or hybrid vehicles, or in information technology apparatus.
- the intended use includes nomadic devices, such as mobile phones, cameras, tablets or laptops, electric or hybrid vehicles, or in renewable energy storage.
- a mixture is prepared with the following: FePO 4 (15g), PEO-based polymer comprising crosslinkable units (5.7 g) as described in Canadian Patent No. 2118047, a mixture of acetonitrile / toluene solvents in a ratio of 80:20 (14.1 g), a lithium salt (LiTFSI, 1.23 g), carbon black (0.56 g), carbon fibers (VGCF, 0.57 g) and a crosslinking agent ( MC 651 Irgacure, 0.079 g).
- the mixture is deposited as a film by the Doctor blade method on a current collector made of aluminum, dried first at 75 ° C. for 15 min, then crosslinked for 2 min under UV, and finally dried at 75 ° C. during 18 hb LiFePO cathode (comparative)
- a mixture is prepared with the following: LiFePO4 (21.7 g), PEO-based polymer comprising crosslinkable units (8.17 g) as described in Canadian Patent No. 2118047, a mixture of acetonitrile / toluene in a ratio of 80:20 (20.26g), a lithium salt (LiTFSI, 1.87g), carbon black (0.78g), carbon fibers (VGCF, 0.78g) and an agent crosslinking ( MC 651 Irgacure, 0.069 g).
- the mixture is deposited as a film by the Doctor blade method on a current collector made of aluminum, dried first at 75 ° C. for 15 min, then crosslinked for 2 min under UV, and finally dried at 75 ° C. during 18 hours.
- a polymer electrolyte is prepared by mixing a PEO-based polymer comprising crosslinkable units (20g) as described in Canadian Patent No. 2111477, a lithium salt (LiTFSI, 6.5g). and a crosslinking agent ( MC 651 Irgacure, 0.29 g) in 80:20 acetonitrile / toluene (49.6 g).
- the polymer film is deposited by the Doctor blade method on a polypropylene (PP) film, dried first at 75 ° C. for 15 min and then crosslinked for 2 minutes under UV, and finally dried again at a temperature of 85 ° C. during 18 hours. The PP film is removed before assembling the stack.
- PP polypropylene
- the cells are manufactured by stacking the films in the following sequence: polymer electrolyte film on the cathode (FePO4 or LiFePO4 cathode) followed by a lithium film on the electrolyte film, all pressed at 80 ° C. 30 min.
- the cells were tested and the comparative results are shown in Figures 1 to 4.
- the PT-2276 cells represent FePO4 cathode cells prepared according to the method of Example 1 (a).
- the PT-945 battery represents a battery with a LiFePO4 cathode prepared according to the method of Example 1 (b).
- Figure 2 illustrates the first lithium dissolution for the FeP04 cell and the first veneer for the cell comprising LiFePO4.
- Figure 3 demonstrates better power performance when using a FePO 4 cathode compared to a LiFePO 4 cathode.
- Figure 4 demonstrates a higher reversible capacitance for a cell comprising the FePO 4 cathode.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2956857A CA2956857A1 (fr) | 2017-02-02 | 2017-02-02 | Materiau d'electrode, electrode et batterie tout solide comprenant un oxyde complexe de structure olivine |
| PCT/CA2018/050117 WO2018141062A1 (fr) | 2017-02-02 | 2018-02-02 | Matériau d'électrode, électrode et batterie tout solide comprenant un oxyde complexe de structure olivine |
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| Publication Number | Publication Date |
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| EP3577706A1 true EP3577706A1 (fr) | 2019-12-11 |
| EP3577706A4 EP3577706A4 (fr) | 2020-11-25 |
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| EP18748545.3A Withdrawn EP3577706A4 (fr) | 2017-02-02 | 2018-02-02 | Matériau d'électrode, électrode et batterie tout solide comprenant un oxyde complexe de structure olivine |
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| Country | Link |
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| US (1) | US20190363363A1 (fr) |
| EP (1) | EP3577706A4 (fr) |
| JP (1) | JP7121738B2 (fr) |
| KR (1) | KR20190112796A (fr) |
| CN (1) | CN110249460B (fr) |
| CA (2) | CA2956857A1 (fr) |
| WO (1) | WO2018141062A1 (fr) |
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| JP2928424B2 (ja) | 1992-03-30 | 1999-08-03 | 株式会社神戸製鋼所 | 包装箱用シート |
| KR20240177278A (ko) * | 2023-06-19 | 2024-12-27 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 양극 및 이를 포함하는 리튬 이차 전지 |
| CN120717439A (zh) * | 2025-08-19 | 2025-09-30 | 苏州四面体新能源科技有限公司 | 碳包覆磷酸铁锂及其制备方法、正极片 |
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| US6514640B1 (en) * | 1996-04-23 | 2003-02-04 | Board Of Regents, The University Of Texas System | Cathode materials for secondary (rechargeable) lithium batteries |
| CN100369302C (zh) * | 2002-10-18 | 2008-02-13 | 国立九州大学 | 生产锂电池阴极材料的方法和锂电池 |
| JP4483253B2 (ja) | 2003-09-30 | 2010-06-16 | 三菱化学株式会社 | リチウム二次電池用正極材料、リチウム二次電池用正極及びリチウム二次電池 |
| US20070077496A1 (en) * | 2005-10-05 | 2007-04-05 | Medtronic, Inc. | Lithium-ion battery |
| KR101071336B1 (ko) * | 2008-03-25 | 2011-10-07 | 주식회사 에너세라믹 | 리튬 전지용 올리빈형 양극 활물질 전구체, 및 이의 제조 방법 |
| CN100583506C (zh) * | 2008-10-22 | 2010-01-20 | 昆明理工大学 | 一种制备多孔锂离子电池正极材料的方法 |
| JP2011071019A (ja) | 2009-09-28 | 2011-04-07 | Sumitomo Osaka Cement Co Ltd | リチウムイオン電池正極活物質の製造方法及びリチウムイオン電池用正極活物質 |
| JP5626531B2 (ja) | 2011-04-19 | 2014-11-19 | ダイソー株式会社 | 非水電解質二次電池 |
| CN103172041B (zh) * | 2011-12-20 | 2014-12-10 | 中国科学院物理研究所 | 一种制备纳米孔磷酸铁的方法、纳米孔磷酸铁及其应用 |
| JP5928302B2 (ja) | 2012-11-02 | 2016-06-01 | 日立金属株式会社 | リチウム二次電池用正極活物質の製造方法 |
| CN103022484B (zh) * | 2012-12-15 | 2014-08-27 | 华中科技大学 | 锂离子导电络合物改性的磷酸铁锂正极材料及其制备方法 |
| KR101439427B1 (ko) * | 2013-03-14 | 2014-09-11 | 한국과학기술연구원 | 리튬이차전지용 올리빈계 양극소재의 재활용 방법, 이에 의하여 제조된 양극소재, 이를 포함하는 리튬이차전지용 양극 및 리튬이차전지 |
| CN103400989A (zh) * | 2013-07-31 | 2013-11-20 | 东莞新能源科技有限公司 | 锂离子电池负极材料用粘接剂及包含该粘接剂的电极的制备方法 |
| JP6605917B2 (ja) * | 2015-10-29 | 2019-11-13 | 太陽誘電株式会社 | 全固体二次電池 |
| JP2016048698A (ja) | 2016-01-04 | 2016-04-07 | 日立化成株式会社 | リチウムイオン二次電池正極用導電剤並びにこれを用いたリチウムイオン二次電池用正極材料、リチウムイオン二次電池用正極合剤、リチウムイオン二次電池用正極及びリチウムイオン二次電池 |
| CN106099104B (zh) * | 2016-08-26 | 2019-07-26 | 常开军 | 一种用于二次电池制造的无锂正极材料及其制造方法 |
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2017
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- 2018-02-02 JP JP2019541400A patent/JP7121738B2/ja active Active
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- 2018-02-02 CN CN201880009615.7A patent/CN110249460B/zh not_active Expired - Fee Related
- 2018-02-02 EP EP18748545.3A patent/EP3577706A4/fr not_active Withdrawn
- 2018-02-02 CA CA3048730A patent/CA3048730A1/fr active Pending
- 2018-02-02 KR KR1020197025742A patent/KR20190112796A/ko not_active Ceased
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| Publication number | Publication date |
|---|---|
| CN110249460A (zh) | 2019-09-17 |
| JP7121738B2 (ja) | 2022-08-18 |
| US20190363363A1 (en) | 2019-11-28 |
| CN110249460B (zh) | 2022-11-25 |
| CA2956857A1 (fr) | 2018-08-02 |
| KR20190112796A (ko) | 2019-10-07 |
| WO2018141062A1 (fr) | 2018-08-09 |
| JP2020509529A (ja) | 2020-03-26 |
| CA3048730A1 (fr) | 2018-08-09 |
| EP3577706A4 (fr) | 2020-11-25 |
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