WO2018094101A1 - Perfectionnements d'additifs destinés à des électrolytes liquides ioniques dans des batteries lithium-ion - Google Patents

Perfectionnements d'additifs destinés à des électrolytes liquides ioniques dans des batteries lithium-ion Download PDF

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WO2018094101A1
WO2018094101A1 PCT/US2017/062090 US2017062090W WO2018094101A1 WO 2018094101 A1 WO2018094101 A1 WO 2018094101A1 US 2017062090 W US2017062090 W US 2017062090W WO 2018094101 A1 WO2018094101 A1 WO 2018094101A1
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methyl
lithium
carbonate
phosphate
tris
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Tyler Evans
Daniela Molina PIPER
Simon HAFNER
Everett JACKSON
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Sillion Inc
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Sillion Inc
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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
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • 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
    • 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

  • This disclosure relates to energy storage devices such as lithium-ion electrochemical cells and batteries. More specifically, the disclosure relates to improvements to room temperature ionic liquid electrolytes separately and in combination as used in lithium-ion energy storage devices and batteries.
  • FIG. 1 illustrates the challenge of this task, demonstrating the relatively low performance of the system shown in Figure 1 when the Si anode is not electrochemically pre-conditioned or pre-lithiated and showing poor stability at higher rates.
  • the cell in Figure 2a shows performance of a cell utilizing "un-matched" electrodes, leading to poor SEI formation over all Si particles; it has been found that the success of this system is heavily dependent on the accurate matching of active material mass loadings in the cathode and anode composites, as well as the design of the Si-cPAN structure based on the ratio of Si mass and cPAN mass, which determines the cPAN coating thickness, electrode porosity, and other parameters.
  • Figure 2b shows performance of a non-preconditioned single-stack pouch full-cell with accurate electrode mass-matching, proving that low-rate cycling stability can indeed be achieved through active material mass matching.
  • RTIL-based electrolyte materials are stigmatized by their ionic conductivities.
  • the RTIL systems typically have Li + conductivities of about half of state-of-the-art electrolytes. While alternative pack designs can mitigate this issue simply by pairing cells in parallel for increased power, it remains desirable to provide higher rate performance and increased low temperature performance so as to create a universally appealing Li-ion cell.
  • NASA seeks Li-ion technologies capable of maintaining greater than 90% of C/5 room temperature capacities at 0 °C (extravehicular missions) or retaining 80% of C/2 room temperature capacity at -60 °C (lander and rover power sources).
  • Figure 3 illustrates applicants previous work with respect to cathode 60 °C and 0 °C performance in additive-free RTIL-based electrolytes. This system's high temperature stability is owed to the thermal stability of the RTIL electrolyte and interfacial compatibility with high voltage cathode systems, but RTIL electrolyte conductivity hinders low temperature performance.
  • Figure 1 illustrates applicant's ⁇ 5 ⁇ / ⁇ [622] full-cell technology, cycled in a high purity RTIL-based electrolyte, demonstrating a capacity and energy retention of greater than 80% over 300 cycles (100% depth of discharge) at a C/3 rate. Specific energy normalized to electrode film thickness.
  • Figure 2 illustrates the cycling stability of applicant's ⁇ 5 ⁇ / ⁇ 0622 technology with no electrochemical preconditioning, which is typically required for cells utilizing a silicon anode. Specific capacity/energy normalized to total active material mass.
  • Figure 3 illustrates half-cell cycling performance of applicant's high-energy cathode/mRTIL system at temperatures of 60 °C (top) and 0°C (bottom).
  • Figure 4 illustrates room temperature full-cell performance of applicant's technology in the mbRTIL electrolyte.
  • Figure 5 is SEM micrographs taken subsequent to extended charging of Al corrosion cells at 4.6V vs. Li/Li + in electrolyte solutions comprised of pure PYR 13 FSI + 1 .2/W LiFSI (a), 1 .2/W LiFSI in PYR13FSI + 10% vol. EC:EMC (b), and 1 .2/W LiFSI in PYR13FSI + 50% vol. EC:EMC (c).
  • Figure 6 illustrates rate study of Li(Ni 1/ 3Mn 1 /3Co 1 /3)0 2 half-cells containing electrolyte solutions comprised of mixtures of PYR 13 FSI + 1 .2/W LiFSI and various volumetric amounts of EC:EMC (1 :2 wt.). Electrochemical cycling was performed at room temperature between 3-4.2V vs. Li/Li + .
  • Figure 7 illustrates cycling data of a ⁇ 5 ⁇ - ⁇ half-cell containing a fluorinated electrolyte additive showing the rapid CE stabilization achieved through use of a co-salt.
  • Figure 8 illustrates EIS of Li/Li symmetric cells containing a RTIL electrolytes with a nitrate salt additive, exhibiting electrolyte conductivity values >6 mS/cm.
  • Electrolyte additives including salts and co-solvents can be employed to increase SEI stability and provide more efficient SEI formation and lower early cycle irreversibility. Via the RTIL-based electrolyte compositions described herein, interfacial stability of the electrode systems is improved. Of significance is the synergistic effect of fluorinated electrolyte additives and others in improving both the safety of the nickel-rich cathode and the performance of the Si anode.
  • Electrolyte conductivity can be boosted using appropriate co-solvents and salts given the relationship between conductivity and viscosity. As viscosity decreases, conductivity increases. It is widely accepted that viscosity is the most important factor determining an IL's ionic conductivity.
  • RTIL co-solvents are an attractive option given the high voltage and thermal stabilities of RTI Ls.
  • EMIMFSI 1 -ethyl-3-methylimidazol-ium bis-fluorosulfonylimide
  • mbRTIL "binary" RTIL solvent electrolyte
  • Figure 4 provides initial results of a full-cell utilizing the mbRTIL electrolyte. The increased electrolyte conductivity decreases ohmic overpotentials in the cell and allows for an increase in initial capacities (+15 mAh/g).
  • the lower chemical compatibility of the EMIMFSI solvent with the Si-cPAN anode leads to lower cycling stability.
  • This application describes the ability to mitigate both SEI formation losses and instabilities and issues arising from RTIL conductivity limitations through the utilization of electrolyte additives and electrolyte compositions.
  • Electrolyte conductivity can be boosted using appropriate co-solvents given the relationship between conductivity and viscosity.
  • RTIL materials for applications in electrochemical devices, it was found that certain cation-anion combinations lead to the oxidation, or corrosion, of metal components. This oxidation is now known to occur in Li-ion cells containing certain anions when exposed to high voltage cycling conditions, ultimately leading to cell failure as the corrosion prevents the cells from charging properly. In order to develop an RTIL electrolyte capable of use in Li-ion batteries, this problem needs to be understood and mitigated.
  • the electrolyte solution includes additives such as fluoroethylene carbonate (FEC) and c(/(2,2,2 trifluoroethyl)carbonate (DFDEC) as potential co-solvent additives, and lithium fluoride (LiF), lithium tetrafluoroborate (LiBF 4 ), lithium difluoro(oxalato)borate (LiDFOB), and lithium hexafluorophosphate (LiPF 6 ) as salt additives.
  • FEC fluoroethylene carbonate
  • DMDEC c(/(2,2,2 trifluoroethyl)carbonate
  • LiF lithium fluoride
  • LiBF 4 lithium tetrafluoroborate
  • LiDFOB lithium difluoro(oxalato)borate
  • LiPF 6 lithium hexafluorophosphate
  • Salt additives capable of enhancing the SEI of the Si-PAN electrode and the cathode-electrolyte interface (CEI) of the high voltage cathode include lithium fluoride (LiF) borates and derivatives thereof including, but not limited to, lithium tetrafluoroborate (LiBF 4 ), lithium difluoro(oxalato)borate (LiDFOB), lithium bis(oxalate)borate (LiBOB), lithium bis(malonato)borate (LiBMB), lithium bis(difluoromalonato)borate (LiBDFMB), lithium (malonato oxalato)borate (LiMOB), and lithium (difluoromalonato oxalato)borate (LiDFMOB), dicarbonate and carbonate salts and derivatives thereof including, but not limited to, lithium ethylene dicarbonate (LEDC), phosphate salts and derivatives thereof including, but not limited to,
  • the amount (weight percentage of total electrolyte) of co-salt SEI former is between 0.01 % and 15% with an exemplary weight percentage being between 0.5% and 5%.
  • Solvent additives capable of enhancing the SEI of the Si-PAN electrode and the cathode-electrolyte interface (CEI) of the high voltage cathode include ethylene carbonate (EC), derivatives of EC, vinylene carbonate (VC), derivatives of VC, and halogen atom-substituted cyclic carbonates.
  • SEI additives include, but are not limited to, vinylene carbonate (VC), vinylethylene carbonate (VEC), methylene ethylene carbonate (MEC), fluoroethylene carbonate (FEC), chloroethylene carbonate (CEC), methyl(2-oxo-1 ,3-dioxolan-4-yl)methyl) carbonate, tetrahydrofuran, oxolane solvents and derivatives thereof including, but not limited to, 4,4-difluoro-l,3-dioxolan-2-one and 4,5- difluoro-l,3-dioxolan-2-one, propionate solvents and derivatives thereof including, but not limited to, methyl tetrafluoro-2-(methoxy)propionate (MTFMP), oxathilane solvents and derivatives thereof including, but not limited to, 1 ,3,2-dioxathilane-2,2-dioxide (DTD), succinic and methyl succinic anhydride
  • the amount (weight percentage of total electrolyte) of co-solvent SEI former is between 0.01 % and 20% with an exemplary weight percentage being between 0.5% and 5%.
  • Supplemental lithium sources capable of offsetting early cycling irreversibility include lithium nitride (Li 3 N). These additives can allow for more advantageous (lower) N/P ratios and increased reversible capacity by providing a secondary lithium source to compensate for inefficiencies during the formation cycles.
  • the amount (weight percentage of total electrolyte) of supplemental lithium source is between 0.01 % to 5%, with an exemplary weight percentage being between 0.05% and 2%.
  • Salt additives capable of enhancing the conductivity of Li-ion battery electrolytes include nitrate salts and derivatives thereof including, but not limited to lithium Nitrate (LiN03) and potassium Nitrate (KN03), lithium 3,9-diallyl-3,9-difluoro-2,4,8, 10-tetraoxo-1 ,5,7, 1 1 -tetraoxa-6- boraspiro[5,5]undecan-6-uide, and sulfate salts and derivatives thereof including, but not limited, to lithium sulfate (LJ2S04).
  • nitrate salts and derivatives thereof including, but not limited to lithium Nitrate (LiN03) and potassium Nitrate (KN03), lithium 3,9-diallyl-3,9-difluoro-2,4,8, 10-tetraoxo-1 ,5,7, 1 1 -tetraoxa-6- boraspiro[5,5]undecan-6-uide, and
  • the amount (weight percentage of total electrolyte) of co-salt additive for conductivity enhancement is between 0.01 % to 75%, with an exemplary weight percentage being between 0.01 % and 20%, and a preferred weight percentage being between 0.05% and 5%.
  • Co-Solvent Additives for Enhanced Conductivity is between 0.01 % to 75%, with an exemplary weight percentage being between 0.01 % and 20%, and a preferred weight percentage being between 0.05% and 5%.
  • Co-solvent additives capable of reducing electrolyte solution viscosity and increasing electrolyte conductivity include a range of solvent classes:
  • Carbonates useful carbonate solvents include cyclic carbonates, such as propylene carbonate (PC) and butylene carbonate, and linear carbonates, such as dimethyl carbonate (DMC), diethyl carbonate, dipropyl carbonate, dibutyl carbonate, ethyl methyl carbonate, methyl propyl carbonate, and ethyl propyl carbonate.
  • cyclic carbonates such as propylene carbonate (PC) and butylene carbonate
  • linear carbonates such as dimethyl carbonate (DMC), diethyl carbonate, dipropyl carbonate, dibutyl carbonate, ethyl methyl carbonate, methyl propyl carbonate, and ethyl propyl carbonate.
  • Useful carboxylate solvents include, but are not limited to: methyl formate, ethyl formate, propyl formate, butyl formate, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, and butyl butyrate.
  • DME Di-Methoxyethane
  • EC ethylene carbonate
  • VC vinylene carbonate
  • DEC diethyl carbonate
  • EMC ethylmethyl carbonate
  • MPC methyl propyl carbonate
  • useful phosphate solvents include, but are not limited to, allyl phosphate, trimethylphosphate, triethyl phosphate, tris(2-chloroethyl) phosphate, propyl dimethyl phosphate, dipropyl methyl phosphate, tris(2,2,2-trifluoroethyl) phosphate, tripropyl phosphate, triisopropyl phosphate, tributyl phosphate, trihexyl phosphate, tritolyl phosphate, methyl ethylene phosphate, ethyl ethylene phosphate, alkyl phosphonates including trimethylphosphonate, and propyl dimethylphosphonate, and aromatic phosphonates, such as phenyl dimethylphosphonate and triphenyl phosphate.
  • Exemplary amounts (weight percentage of total electrolyte) of phosphorus containing additives for conductivity enhancement are between 1 % and 4%.
  • Phosphites include, but are not limited to, tris(2,2,2)-trifluorethyl phosphite, tris(trialkylsilyl)phosphites, tris(trimethylsilyl)phosphite, tris(triethylsilyl)phosphite, and tris(tripropylsilyl)phosphite.
  • useful borate solvents include, but are not limited to, tri-ethyl Borate (TEB), tris(trialkylsilyl)borates tris(trimethylsilyl)borate, tris(triethylsilyl)borate, and tris(tripropylsilyl)borate.
  • TAB tri-ethyl Borate
  • TAB tris(trialkylsilyl)borates tris(trimethylsilyl)borate, tris(triethylsilyl)borate, and tris(tripropylsilyl)borate.
  • Sulfones useful sulfone solvents include, but are not limited to, fully fluorinated sulfones, such as di(thfluoromethyl) sulfone, di(pentafluoroethyl) sulfone, thfluoromethyl pentafluoroethyl sulfone, thfluoromethyl nonafluorobutyl sulfone, and pentafluoroethyl nonafluorobutyl sulfone.
  • fully fluorinated sulfones such as di(thfluoromethyl) sulfone, di(pentafluoroethyl) sulfone, thfluoromethyl pentafluoroethyl sulfone, thfluoromethyl nonafluorobutyl sulfone, and pentafluoroethyl nonafluorobutyl sulfone.
  • non-fluorinated sulfones such as dimethyl sulfone, ethyl methyl sulfone, and ethyl methoxythyl sulfone
  • partially fluorinated sulfones such as methyl trifluoromethyl sulfone, ethyl thfluoromethyl sulfone, methyl pentafluoroethyl sulfone, and ethyl pentafluoroethyl sulfone.
  • Ionic liquid useful ionic liquids include, but are not limited to, ionic liquids containing the N-propyl-N-methylpiperidinium cation and other piperidinium cations, ionic liquids containing the N-methyl-N-propyl pyrrolidinium cation and other pyrrolidinium cations, bis(oxalate)borate (BOB) anion based ionic liquids including N- cyanoethyl-N-methylprrrolidinium BOB, 1 -methyl-1 -(2-methylsulfoxy)ethyl)- pyrrolidinium BOB, and l-methyl-l-((l,3,2- dioxathiolan-2-oxide-4- yl)methyl)pyrrolidinium BOB, tris(pentafluoroethyl)trifluorophosphate (FAP) anion based ionic liquids, such as N-allyl-N-methylpiperidinium
  • PDMS oils Polydimethylsiloxane (PDMS) oils: PDMS polymers are liquids at room temperature, and short chain variations afford low-viscosity and chemically stable co- solvents. They are not miscible with the RTIL in notable quantities but do seem to afford some reduction in viscosity and increase in conductivity.
  • the ionic liquid electrolytes have poor miscibility with PDMS and with many separators.
  • Using a surfactant can aid by improving separator wettability and with enhancing co-solvent miscibility.
  • Surfactants include lithium dodecyl sulfate and other sulfates, nitrates, phosphates, and borates. Most surfactants are potassium and sodium salts.
  • Glymes Glycol ethers, or glymes, are a class of increasingly common "green solvents" due to their low vapor pressure, high boiling point, high thermal stability, and high (electro)chemical stability. Glyme solvents, along with diglyme and tetraglyme (diethyl- and tetraethyl-, respectively) may be effective co-solvents that can decrease the electrolyte conductivity while retaining the high SEI stability offered by the IL electrolyte.
  • Useful glymes include triethyl glycol dimethyl ether (triglyme or "G3"), tetraglyme (G4), and solvents of the tyle Li(glyme)]X with different anions (X: [N(S0 2 C 2 F5)2] or [BETI], [N(S0 2 CF 3 ) 2 ] or [TFSA], [CF3SO3] or [OTf], BF 4 , N0 3 ).
  • triglyme or "G3” triethyl glycol dimethyl ether
  • G4 tetraglyme
  • solvents of the tyle Li(glyme)]X with different anions X: [N(S0 2 C 2 F5)2] or [BETI], [N(S0 2 CF 3 ) 2 ] or [TFSA], [CF3SO3] or [OTf], BF 4 , N0 3 ).
  • Sulfur-containing solvents include, but are not limited to, sulfites, sulfates, sulfoxides, sulfonates, thiophenes, thiazoles, thietanes, thietes, thiolanes, thiazolidines, thiazines, sultones, and sulfones.
  • Various degrees of fluorine substitution can be introduced up to and including the fully perfluorinated compunds.
  • sulfur-containing linear and cyclic compounds include ethylene sulfite, ethylene sulfate, thiophene, benzothiophene, benzo[c]thiophene, thiazole, dithiazole, isothiazole, thietane, thiete, dithietane, dithiete, thiolane, dithiolane, thiazolidine, isothiazolidine, thiadiazole, thiane, thiopyran, thiomorpholine, thiazine, dithiane, dithiine, thiepane, thiepine, thiazepine, prop-l-ene- 1,3-sultone; propane- 1 , 3 -sultone, butane- 1 ,4-sultone, 3 -hydroxy- 1 - phenylpropanesulfonic acid 1 ,3 -sultone; 4-hydroxy-l-phenylbutanesulfonic acid 1
  • Sulfones having the formula R-S-C-R 2 where R and R 2 are independently selected from the group consisting of substituted or unsubstituted, saturated or unsaturated Ci to C 20 alkyl or aralkyl groups.
  • Other sulfur-containing solvents include propane-l,3-sultone, butane-1 ,4- sultone and prop-l-ene-l,3-sultone.
  • Lactones useful lactone solvents include, but are not limited to, butyrolactone, 2-methyl-y-butyrolactone, 3-methyl-y-butyrolactone, 4-methyl-y- butyrolactone, ⁇ -propiolactone, and ⁇ -valerolactone.
  • the amount (weight percentage of total electrolyte) of co-solvent additive for conductivity enhancement is between 0.01 % to 75%, with an exemplary weight percentage being between 0.5% and 50% and a preferred weight percentage being between 25% and 50%.
  • the anode is an electrode into which positive electric charge (in the form of lithium cations) flows during normal operation (discharging) when incorporated into an energy storage and conversion device, such as a rechargeable lithium-ion battery.
  • the anode includes one or more active material particle enclosed by a membrane permeable to lithium ions.
  • the active material particles are a source of electrons when the anode is incorporated into an electrochemical cell.
  • the anode includes silicon. In some embodiments, the anode includes micron-sized silicon ( ⁇ ). The anode allows for reversible cycling of the micron-sized silicon particles.
  • each active material particle has a diameter in the range of from about one to about fifty micrometers. In some embodiments, each active material particle has a diameter in a range of between about 500 nanometers and about one micrometer, one and about five micrometers, between about one and about ten micrometers, between about one and about twenty micrometers, between about ten and about twenty micrometers, between about ten and about fifty micrometers, or between about twenty and about fifty micrometers.
  • the active material particles comprising the anode composite may include a mixture of particle sizes ranging from about 500 nanometers to about fifty micrometers.
  • the membrane is a flexible structure enclosing each of the one or more active material particles. In some embodiments, the membrane may enclose one or multiple active material particles. In some embodiments, the membrane includes a conductive material. In some embodiments, the conductive material includes a mechanically resilient polymer (a polymer having the ability to expand and contract with minimal mechanical failure), such as polyacrylonitrile (PAN). In some embodiments, the polymer is self-cyclizing with heat treatment. In some embodiments, the polymer comprises cyclized polyacrylonitrile (cPAN).
  • PAN polyacrylonitrile
  • the cathode is an electrode by which electrons enter the energy storage device during discharging.
  • the cathode is not limited to being formed from a particular material.
  • the nickel- rich oxide material includes Li(Ni 0 .6Mno .2 Coo .2 )0 2 ("NMC622" or "NMC[622]"), Li(Nio. 8 Mno. 1 Coo. 1 )0 2 ("NMC81 1 " or "NMC[81 1 ]”), or Li(Nio. 8 Coo.i 5Alo.o5)0 2 (“NCA").
  • the nickel-rich oxide cathode material and silicon anode may be successfully stabilized.
  • cycling between 2.5-4.5 V vs. Li/Li + in this imide- based electrolyte allows for 100% capacity retention over 100+ cycles.

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Abstract

Divers modes de réalisation de la présente invention concernent des dispositifs de stockage d'énergie et des compositions d'électrolyte se prêtant à une utilisation dans des dispositifs de stockage d'énergie. Selon certains modes de réalisation, un dispositif de stockage d'énergie présente un électrolyte comprenant un liquide ionique à température ambiante permettant de coupler l'anode à la cathode. L'électrolyte comprend des additifs destinés à améliorer la chimie interfaciale sur l'anode et la cathode ainsi que la conductivité de l'électrolyte.
PCT/US2017/062090 2016-11-16 2017-11-16 Perfectionnements d'additifs destinés à des électrolytes liquides ioniques dans des batteries lithium-ion Ceased WO2018094101A1 (fr)

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CN114583263A (zh) * 2020-11-30 2022-06-03 比亚迪股份有限公司 电解液、正极、锂离子电池和车辆
US20230036244A1 (en) * 2021-07-08 2023-02-02 The Board Of Trustees Of The Leland Stanford Junior University Non-flammable polymeric electrolyte with wide operational temperature range
US20230089885A1 (en) * 2020-09-09 2023-03-23 Lg Energy Solution, Ltd. Non-Aqueous Electrolyte for Lithium Secondary Battery and Lithium Secondary Battery Including Same
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CN118136959A (zh) * 2024-03-19 2024-06-04 吉林省东驰新能源科技有限公司 一种噻二唑类化合物作为锂硫电池电解液添加剂的应用
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CN118825415A (zh) * 2024-08-06 2024-10-22 四川易纳能新能源科技有限公司 钠离子电池电解液及其制备方法和应用、钠离子电池

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CN108987808A (zh) * 2018-07-30 2018-12-11 桑顿新能源科技有限公司 一种高电压锂离子电池非水电解液及锂离子电池
CN108987808B (zh) * 2018-07-30 2021-11-05 桑顿新能源科技(长沙)有限公司 一种高电压锂离子电池非水电解液及锂离子电池
CN109713221B (zh) * 2018-12-27 2021-06-08 陕西煤业化工技术研究院有限责任公司 一种改善锂离子电池负极性能的方法
CN109713221A (zh) * 2018-12-27 2019-05-03 陕西煤业化工技术研究院有限责任公司 一种改善锂离子电池负极性能的方法
CN109817962A (zh) * 2019-04-02 2019-05-28 福建蓝海黑石新材料科技有限公司 一种酚醛树脂修饰的锂离子电池硅基负极材料及制备方法
US11649358B2 (en) * 2019-09-11 2023-05-16 Uchicago Argonne, Llc Borate salts, polymers and composites
CN111446499A (zh) * 2020-04-03 2020-07-24 江西理工大学 一种混合锂盐电解液
CN113745657B (zh) * 2020-05-27 2023-03-14 比亚迪股份有限公司 用于锂二次电池的电解液和锂二次电池
CN113745657A (zh) * 2020-05-27 2021-12-03 比亚迪股份有限公司 用于锂二次电池的电解液和锂二次电池
US20230089885A1 (en) * 2020-09-09 2023-03-23 Lg Energy Solution, Ltd. Non-Aqueous Electrolyte for Lithium Secondary Battery and Lithium Secondary Battery Including Same
CN114204104A (zh) * 2020-09-17 2022-03-18 马自达汽车株式会社 锂离子二次电池及其制造方法
CN114583263A (zh) * 2020-11-30 2022-06-03 比亚迪股份有限公司 电解液、正极、锂离子电池和车辆
CN114583263B (zh) * 2020-11-30 2023-11-14 比亚迪股份有限公司 电解液、正极、锂离子电池和车辆
CN112670580B (zh) * 2020-12-23 2022-07-01 东莞新能源科技有限公司 电解液、电化学装置及电子装置
CN112670580A (zh) * 2020-12-23 2021-04-16 东莞新能源科技有限公司 电解液、电化学装置及电子装置
US20230036244A1 (en) * 2021-07-08 2023-02-02 The Board Of Trustees Of The Leland Stanford Junior University Non-flammable polymeric electrolyte with wide operational temperature range
CN113937358A (zh) * 2021-09-29 2022-01-14 广东工业大学 一种锂离子电池电解液添加剂及其制备方法与锂电池电解液
CN114039092A (zh) * 2021-10-28 2022-02-11 湖南法恩莱特新能源科技有限公司 一种锂离子电池电解液及其制备方法与应用
CN114039092B (zh) * 2021-10-28 2024-05-14 湖南法恩莱特新能源科技有限公司 一种锂离子电池电解液及其制备方法与应用
CN114284558A (zh) * 2021-12-29 2022-04-05 惠州亿纬锂能股份有限公司 一种锂离子电池电解液及锂离子电池
CN114335729B (zh) * 2021-12-31 2023-06-06 天目湖先进储能技术研究院有限公司 一种锂电池用高电压添加剂及电解液
CN114335729A (zh) * 2021-12-31 2022-04-12 天目湖先进储能技术研究院有限公司 一种锂电池用高电压添加剂及电解液
WO2024118808A1 (fr) * 2022-11-29 2024-06-06 Sila Nanotechnologies, Inc. Composés pour améliorer l'interphase solide-électrolyte (sei) de matériaux d'anode à base de silicium dans des batteries au lithium-ion, et électrolytes, batteries et procédés associés
CN118136959A (zh) * 2024-03-19 2024-06-04 吉林省东驰新能源科技有限公司 一种噻二唑类化合物作为锂硫电池电解液添加剂的应用
CN118825415A (zh) * 2024-08-06 2024-10-22 四川易纳能新能源科技有限公司 钠离子电池电解液及其制备方法和应用、钠离子电池

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