WO2017006834A1 - Plaque d'acier pour boîtier de cellule secondaire à électrolyte non aqueux, et boîtier de cellule secondaire à électrolyte non aqueux - Google Patents

Plaque d'acier pour boîtier de cellule secondaire à électrolyte non aqueux, et boîtier de cellule secondaire à électrolyte non aqueux Download PDF

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Publication number
WO2017006834A1
WO2017006834A1 PCT/JP2016/069473 JP2016069473W WO2017006834A1 WO 2017006834 A1 WO2017006834 A1 WO 2017006834A1 JP 2016069473 W JP2016069473 W JP 2016069473W WO 2017006834 A1 WO2017006834 A1 WO 2017006834A1
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Prior art keywords
plating layer
electrolyte secondary
alloy plating
secondary battery
battery case
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PCT/JP2016/069473
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English (en)
Japanese (ja)
Inventor
石塚　清和
高橋　武寛
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Nippon Steel Corp
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Nippon Steel and Sumitomo Metal Corp
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Priority to JP2016563472A priority Critical patent/JP6086176B1/ja
Priority to CN201680027069.0A priority patent/CN107710446B/zh
Publication of WO2017006834A1 publication Critical patent/WO2017006834A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
    • 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 invention relates to a steel sheet for a non-aqueous electrolyte secondary battery case and a non-aqueous electrolyte secondary battery case.
  • a low-cost and highly reliable outer case material is required.
  • a Ni-plated steel sheet obtained by applying Ni plating to the steel sheet surface is usually used from the viewpoint of press formability, weldability, corrosion resistance, strength, and the like.
  • a battery can such as a cylindrical can or a square can is manufactured by press-molding a Ni-plated steel sheet, and an electrode group composed of a positive electrode plate, a negative electrode plate and a separator and an electrolyte are accommodated inside the battery can. Thereafter, the battery lid is caulked and fixed to the opening of the battery can, and the outer case composed of the battery can and the battery lid is sealed.
  • a metal In a lithium ion battery, a metal can is usually connected to a negative electrode. In this case, considering the potential of the negative electrode, there is little possibility that metal ions are eluted from the Ni-plated steel sheet during operation of the lithium ion battery. However, during the manufacture of a lithium ion battery, in the aging process from when the electrode group and the electrolyte solution are accommodated in the outer case to when the lithium ion battery is charged, the potential of the case is not doped with lithium ions. The carbon negative electrode potential for charging (3.2 to 3.4 V vs. Li / Li + ) is obtained.
  • this aging process is normally performed for several days in order to fully infiltrate electrolyte solution in a positive electrode, a negative electrode, and a separator, and to stabilize the initial charge / discharge characteristic. Therefore, depending on conditions, Fe ion elution from the Ni plating layer or its damaged part may occur.
  • metal ions may be eluted when the battery case potential rises due to overdischarge of the battery when the battery is used. Also, when a metal outer case using a Ni-plated steel plate is used as a neutral case insulated from the battery element, there is no problem with corrosion resistance under normal use conditions. However, when the potential of the battery case increases due to the action of an oxidizing agent in the electrolyte, metals such as Ni may be eluted.
  • Patent Document 1 discloses a steel sheet for a non-aqueous electrolyte secondary battery case having a Cu layer under the Ni layer.
  • Patent Document 2 discloses a plated steel sheet for an alkaline battery in which a nickel layer and a nickel-tungsten alloy layer are formed from the bottom on a steel sheet on the inner side of the battery container.
  • a battery container of a lithium ion battery which is a typical example of a nonaqueous electrolyte battery, is a negative electrode
  • a battery container of an alkaline battery (alkali manganese battery) is a positive electrode.
  • MnO 2 or NiOOH is often used as the battery active material of the positive electrode of the alkaline battery, and these battery active materials are collected in direct contact with the inner surface of the battery container.
  • a battery active material of a lithium ion battery (in a typical example, the negative electrode is C and the positive electrode is LiCoO 2 ) is applied to a positive and negative foil, and is connected from the foil to the positive and negative electrodes through leads. Further, the lithium ion battery is characterized in that the battery active material is not in contact with the battery container.
  • a nonaqueous electrolyte in which a Li salt such as lithium hexafluorophosphate (LiPF 6 ) is dissolved in a nonaqueous solvent such as ethylene carbonate (EC) or diethyl carbonate (DEC) is used.
  • a KOH aqueous solution or the like is used as an alkaline battery electrolyte.
  • Patent Document 1 is mainly intended to suppress iron exposure during processing and is not intended to prevent elution of Ni and Cu.
  • Patent Document 2 is a technique used for a battery container of an alkaline battery in which the positive electrode mixture and the battery container are in direct contact. That is, even if the technique disclosed in Patent Document 2 is applied to a non-aqueous electrolyte secondary battery whose battery container is not a current collector, sufficient characteristics cannot be obtained.
  • An object of the present invention is to provide a steel sheet for a non-aqueous electrolyte secondary battery case and a non-aqueous electrolyte secondary battery case that are low in corrosion and excellent in economic efficiency.
  • a steel sheet for a non-aqueous electrolyte secondary battery case includes a steel sheet and a Ni—W—Fe alloy formed on the surface of the steel sheet, and includes a non-aqueous electrolyte secondary battery. And a Ni—W—Fe alloy plating layer to be an inner surface of the case.
  • the Ni—W—Fe alloy plating layer is 1 to 2 based on the total mass of the Ni—W—Fe alloy plating layer. You may employ
  • the Ni—W—Fe alloy plating layer has a total mass of the Ni—W—Fe alloy plating layer.
  • a configuration containing 5 to 50% by mass of W may be adopted.
  • the Ni—W—Fe alloy plating layer is made of Cr, Mo and Co.
  • a configuration may be employed in which one or more selected from the group consisting of 5% by mass or less is further added to the total mass of the Ni—W—Fe alloy plating layer.
  • the content of W in the Ni—W—Fe alloy plating layer is a unit mass%.
  • X is X and the Fe content is Y in unit mass%
  • a configuration in which X and Y satisfy the following formula (1) may be adopted.
  • a Ni plating layer is further provided below the Ni—W—Fe alloy plating layer.
  • a configuration may be adopted.
  • a nonaqueous electrolyte secondary battery case according to an aspect of the present invention is manufactured using the steel sheet for a nonaqueous electrolyte secondary battery case according to any one of the above (1) to (7). Is done.
  • a steel sheet for a non-aqueous electrolyte secondary battery case and a non-aqueous electrolyte secondary battery case can be provided.
  • FIG. 3 is a schematic diagram showing a layer structure of a steel sheet for a non-aqueous electrolyte secondary battery case according to the present embodiment when a Ni plating layer is formed under the Ni—W—Fe alloy plating layer.
  • FIG. 1 is a schematic diagram showing a layer structure of a steel sheet 10 for a nonaqueous electrolyte secondary battery case.
  • a non-aqueous electrolyte secondary battery case steel plate 10 is formed on the surface of a steel plate 20 and a steel plate 20, contains a Ni—W—Fe alloy, and contains a non-aqueous electrolyte secondary battery case.
  • a Ni—W—Fe alloy plating layer 50 serving as an inner surface of the substrate.
  • the steel plate (steel material) 20 used as a base material of the steel plate 10 for nonaqueous electrolyte secondary battery cases is not particularly limited as long as it is plain steel, stainless steel is not preferable from the viewpoint of economy.
  • a steel material suitable for workability required from the shape of the metal case can be appropriately selected and used.
  • the steel sheet 10 for a non-aqueous electrolyte secondary battery case is characterized by having a Ni—W—Fe alloy plating layer 50 containing Fe on the surface layer on the surface which is the inner surface of the battery case.
  • the non-aqueous electrolyte secondary battery case steel sheet 10 according to the present embodiment can ensure sufficient corrosion resistance as a case of a non-aqueous electrolyte secondary battery typified by a lithium ion battery.
  • elution of metal ions into the electrolyte can be suppressed.
  • the Ni—W—Fe alloy plating layer 50 contains Fe in the alloy plating layer.
  • the preferable content of Fe in the Ni—W—Fe alloy plating layer is, for example, a Ni—W—Fe alloy plating layer. It is 1 to 20% (hereinafter,% represents mass%) with respect to the total mass of 50. If the Fe content is less than the lower limit and exceeds the upper limit, the elution of metal ions in the non-aqueous electrolyte tends to increase, such being undesirable.
  • the Fe content in the Ni—W—Fe alloy plating layer is more preferably 5 to 15%.
  • the W content of the Ni—W—Fe alloy plating layer 50 is preferably 5 to 50% with respect to the total mass of the Ni—W—Fe alloy plating layer 50, for example. If the W content is less than the lower limit or exceeds the upper limit, metal ion elution in the non-aqueous electrolyte tends to increase, which is not preferable.
  • the W content in the Ni—W—Fe alloy plating layer 50 is more preferably 10 to 40%.
  • the remainder other than Fe and W is composed of Ni and inevitable impurities.
  • the Ni—W—Fe alloy plating layer 50 is allowed to contain at least one of Cr, Mo, and Co instead of the remaining Ni.
  • the content of the above elements (the total content when two or more elements are included) is preferably 5% or less with respect to the total mass of the Ni—W—Fe alloy plating layer 50, for example. Under such conditions, metal ion elution in the non-aqueous electrolyte is effectively suppressed.
  • the content of at least one of Cr, Mo, and Co in the Ni—W—Fe alloy plating layer 50 is more preferably 3% or less.
  • Ni—W—Fe alloy plating layer 50 is excellent in resistance to metal ion elution in a non-aqueous electrolyte is not clear, but a natural oxide film (non-existing film) existing on the surface of the Ni—W—Fe alloy plating layer 50 is not clear. (Shown) is considered to be stable with respect to the non-aqueous electrolyte. Further, it is conceivable that the Ni—W—Fe alloy plating layer 50 reacts with the nonaqueous electrolytic solution when the potential is increased, and forms a film (not shown) having a stable protective action. On the other hand, when Ni, W, and Fe do not coexist in the Ni—W—Fe alloy plating layer 50, it is presumed that a film (not shown) having a stable protective action as described above is hardly formed.
  • the steel sheet 10 for a non-aqueous electrolyte secondary battery case has a Ni—W—Fe alloy plating layer 50 on the surface layer (more specifically, the surface layer on the inside of the battery case when the battery case is formed).
  • the lower plating layer of the Ni—W—Fe alloy plating layer 50 is not necessarily limited, and a known plating layer used for battery cases can be applied.
  • FIG. 2 is a schematic diagram showing a layer structure of a steel sheet for a nonaqueous electrolyte secondary battery case according to the present embodiment when a Ni plating layer is formed under the Ni—W—Fe alloy plating layer.
  • the Ni-W-Fe alloy plating layer 50 has a relatively soft Ni plating layer 30 below the Ni-W-Fe alloy plating layer 50. It is desirable. By forming the Ni plating layer 30, it is possible to suppress damage due to processing of the Ni—W—Fe alloy plating layer 50 and elution of metal ions into the non-aqueous electrolyte accompanying the damage.
  • Ni plating layer 30 is a Ni—Fe diffusion layer (not shown).
  • the Ni—Fe diffusion layer is formed by mutually diffusing Ni in plating and Fe in steel by heat treatment after Ni plating.
  • the thickness of the Ni—W—Fe alloy plating layer 50 is preferably 0.05 to 2.00 ⁇ m, for example. When the thickness of the Ni—W—Fe alloy plating layer 50 is too thin, less than 0.05 ⁇ m, the elution of metal ions in the non-aqueous electrolyte tends to increase, which is not preferable. In addition, if the thickness of the Ni—W—Fe alloy plating layer 50 exceeds 2.00 ⁇ m, the plating damage during processing tends to increase, resulting in the elution of metal ions into the non-aqueous electrolyte. Is not preferable because it tends to increase. The thickness of the Ni—W—Fe alloy plating layer 50 is more preferably 0.10 to 1.50 ⁇ m.
  • the thickness of the Ni—W—Fe alloy plating layer 50, the Fe content, and the W content are foils by FIB (Focused Ion Beam) so that a cross section along the plate thickness direction can be observed.
  • FIB Fluorescence Beam
  • the TEM Transmission Electron Microscope: Transmission Electron Microscope
  • EDS Electronic Dispersive X-ray Spectroscopy
  • FE-SEM Field-Emission Scanning Electron
  • STEM Sccanning Transmission Electron Microscope
  • an alloy with different compositions of Ni, W, and Fe is plated on the steel plate 20 as a single layer to produce a plurality of samples having different compositions.
  • the cross sections of the plated layers of these samples are quantitatively analyzed for Ni, W, and Fe using a TEM capable of elemental analysis by EDS or an FE-SEM with STEM mode.
  • the plating layer of these samples is dissolved with an acid, and ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometry) or ICP-MS (Inductively Coupled Plasma-Mass-Plasma-Mass-Plasma-Mass-Plasma-Mass-Plasma Mass-Plasma )
  • ICP-AES Inductively Coupled Plasma-Atomic Emission Spectrometry
  • ICP-MS Inductively Coupled Plasma-Mass-Plasma-Mass-Plasma-Mass-Plasma Mass-Plasma Mass-Plasma
  • a calibration curve showing the relationship between the detected intensity in EDS and the concentration of each element by comparing the quantitative analysis result by EDS attached to TEM or FE-SEM with the quantitative analysis result by ICP-AES or ICP-MS. Ask for.
  • TEM capable of elemental analysis by EDS includes a combination of JEOL FE-TEM: JEM2100F (acceleration voltage 200 kV) and JEOL EDS: JED-2300T (probe diameter of about 2 nm).
  • the Ni plating layer 30 or the Ni—W—Fe alloy plating layer 50 When the Ni plating layer 30 or the Ni—W—Fe alloy plating layer 50 is dissolved with an acid, it may be difficult to selectively dissolve only the plating layer depending on the composition of the plating layer. In particular, when the Ni plating layer 30 is formed on the steel plate 20, it is difficult to dissolve only the Ni plating layer 30. In that case, the analysis result obtained by dissolving only the steel plate 20 is subtracted from the analysis result obtained by dissolving the steel plate 20 (and Ni plating layer 30) and the Ni—W—Fe alloy plating layer 50. The method can be adopted. Specific examples of the melting method in this case include a method in which a plated steel sheet at room temperature or about 80 ° C.
  • the Ni adhesion amount of the Ni plating layer 30 provided under the Ni—W—Fe alloy plating layer 50 is preferably about 1 to 45 g / m 2 .
  • the amount of Ni in the Ni—Fe diffusion layer is preferably in the above range.
  • the amount of Ni in the Ni—Fe diffusion layer (not shown) and the amount of Ni in the Ni plating layer 30 are also shown. Is preferably in the above range.
  • the diffusion state of the Ni plating layer 30 can be confirmed by EDS analysis using the FIB workpiece described above.
  • the Ni adhesion amount of the Ni plating layer 30 is more preferably 9 to 27 g / m 2 .
  • the Ni—W—Fe alloy plating layer 50 can be formed by an electroplating method in which Fe ions coexist in a known Ni—W plating bath (alloy plating step). Note that Fe may be diffused from steel. When Fe ions are allowed to coexist in the Ni—W plating bath, the concentration of Fe ions is preferably 0.05 to 5 g / l.
  • Ni—W plating bath a bath containing tungstate ions, nickel ions, and a complexing agent thereof can be used.
  • the tungstate ion can be added as a highly water-soluble salt such as sodium tungstate, potassium tungstate, or ammonium tungstate.
  • concentration of tungstate ion in the Ni—W plating bath is preferably 0.5 to 50 g / l.
  • the nickel ion can be nickel sulfate, nickel chloride, or nickel carbonate as long as it can be dissolved in the order of preparation.
  • the concentration of Ni ions in the Ni—W plating bath is preferably 1 to 50 g / l.
  • citric acid and its salt are often added, but other complexing agents such as pyrophosphoric acid and its salt, 1-hydroxyethane-1, 1-diphosphonic acid and the like can also be used.
  • Citric acid salts include trisodium citrate, disodium hydrogen citrate, sodium dihydrogen citrate, tripotassium citrate, dipotassium hydrogen citrate, potassium dihydrogen citrate, trilithium citrate, dilithium hydrogen citrate. , Lithium dihydrogen citrate, triammonium citrate, diammonium hydrogen citrate, or ammonium dihydrogen citrate can be used.
  • ammonium ions are also said to have an effect of increasing current efficiency, and an ammonium salt may be used for the Ni—W plating bath or may be added separately as ammonia.
  • Iron ions may be supplied as a divalent Fe salt.
  • iron (II) sulfate or iron (II) chloride is used.
  • Adjustment of the W content and the Fe content in the Ni—W—Fe alloy plating layer 50 can be arbitrarily adjusted by optimizing the bath concentration and the current density.
  • W depends on the current density as well as the tungstate ion concentration in the bath, and the W content tends to increase as the current density decreases.
  • Fe is known to exhibit an anomalous precipitation behavior with respect to Ni, and tends to precipitate contrary to the order of potential, Ni and Fe (in noble order). That is, the Fe / Ni ratio during plating is larger than the Fe / Ni ratio in the bath.
  • the metal ion concentration in the Ni—W plating bath may be adjusted so as to obtain a desired plating composition.
  • the current density at the time of performing the alloy plating step is not particularly limited, and examples thereof include 0.5 to 50 A / dm 2 .
  • the Ni—W—Fe alloy plating layer 50 having a desired component can be formed.
  • the temperature of the Ni—W plating bath at the time of performing the alloy plating step is not particularly limited, and examples thereof include 40 to 80 ° C.
  • the Ni—W—Fe alloy plating layer 50 is preliminarily plated on the steel plate 20 used as the base material.
  • the method of forming is mentioned.
  • the Ni plating method is not limited at all, and widely known methods can be applied.
  • a method of forming the Ni—W—Fe alloy plating layer 50 after the Ni—Fe alloy plating is performed on the steel plate 20 used as the base material can also be adopted. Further, after performing Ni plating and Ni—W alloy plating containing Fe on the steel plate 20 used as a base material in this order, heat treatment is performed, and a part or all of the lower Ni plating layer 30 is obtained. A method using a Ni—Fe diffusion layer (not shown) is also suitable.
  • non-aqueous electrolyte secondary battery case (Second embodiment, non-aqueous electrolyte secondary battery case (not shown)) Next, a nonaqueous electrolyte secondary battery case (not shown) according to the second embodiment will be described.
  • the non-aqueous electrolyte secondary battery case (not shown) is not particularly limited except that the non-aqueous electrolyte secondary battery case steel plate 10 is used so that the inner surface becomes the Ni—W—Fe alloy plating layer 50.
  • the surface used as the outer surface of a nonaqueous electrolyte secondary battery case (not shown) it is good also as the same structure as an inner surface, and you may give well-known plating according to the use.
  • the manufacturing method of a nonaqueous electrolyte secondary battery case is not particularly limited, and a known method for manufacturing a nonaqueous electrolyte secondary battery case can be used.
  • Example shown below is only an example of the steel sheet for nonaqueous electrolyte secondary battery cases according to the present invention, and the steel sheet for nonaqueous electrolyte secondary battery case according to the present invention is limited to the following examples. Is not to be done.
  • Example 1 (Examples 1 to 25 and Comparative Examples 1 and 2) An annealed ultra-low carbon steel plate having a thickness of 0.3 mm is used as a base plate, and Ni plating with an adhesion amount of 1 g / m 2 is performed under the conditions shown in Table 1 below. A Ni—W—Fe alloy plating of the composition was plated to a thickness of 1 ⁇ m. The W content and the Fe content in the Ni—W—Fe alloy plating layer were controlled by adjusting the current density shown in Table 2 and the addition amount of iron (II) sulfate. After the above plating, heat treatment was performed in a non-oxidizing atmosphere at a temperature of 500 ° C. for 30 seconds.
  • Example 26 The same procedures as in Examples 1 to 25 were performed except that the plating bath shown in Table 2 below was further plated by adding 2 g / L of chromium (III) sulfate 12 hydrate.
  • Example 27 The same procedures as in Examples 1 to 25 were performed except that the plating bath shown in Table 2 below was further plated by adding 10 g / L of sodium molybdate dihydrate.
  • Example 28 The same procedures as in Examples 1 to 25 were performed except that 3 g / L of cobalt sulfate heptahydrate was further added to the plating bath shown in Table 2 below.
  • Example 29 The above examples except that the plating bath shown in Table 2 below was further plated with sodium molybdate dihydrate 7 g / L and cobalt sulfate heptahydrate 3 g / L. Performed in the same manner as 1-25.
  • Example 30 For the plating bath shown in Table 2 below, chromium (III) sulfate 12 hydrate 3 g / L, sodium molybdate dihydrate 9 g / L, and cobalt sulfate heptahydrate 1 g / L, The same procedure as in Examples 1 to 25 was performed, except that the plating was performed with addition.
  • the performance evaluation was performed as follows. The end portion and the back surface of the test piece were tape-sealed, and an area of 1 cm 2 was exposed to be an evaluation surface.
  • a tripolar cell was assembled with the test piece as a working electrode and metallic lithium as a counter electrode and a reference electrode.
  • a solution in which 1 M LiPF 6 was dissolved in a solvent in which ethylene carbonate and diethyl carbonate were mixed at a volume ratio of 1: 1 was used as an electrolytic solution.
  • the cell was held at a temperature of 30 ° C. for 48 hours with the working electrode potential regulated to 3.6 V (lithium reference).
  • the total energization amount was measured and the amount of metal eluted in the electrolyte was measured and evaluated according to the following criteria. In the following evaluation criteria, a score of 3 or higher was judged to be good.
  • Total energization 5: 0.01 C / cm 2 or less 4: 0.01 C / cm 2 excess 0.1 C / cm 2 or less 3: 0.1 C / cm 2 excess 0.3 C / cm 2 or less 2: 0.3 C / cm 2 excess 1C / cm 2 or less 1: 1C / cm 2 exceeded
  • the composition of the upper Ni—W—Fe alloy plating layer is as follows: FIB work piece, JEOL FE-TEM: JEM2100F (acceleration voltage 200 kV) and JEOL EDS: JED-2300T (probe diameter about 2 nm) was quantified by the method described above.
  • the balance was Ni and impurities. Examples 1 to 30 contained a Ni—W—Fe alloy, but Comparative Examples 1 to 3 did not contain a Ni—W—Fe alloy.
  • Comparative Example 1 and Comparative Example 2 since the plating bath was manufactured by a method not containing Fe ions, the alloy plating layer did not contain Fe. Therefore, Comparative Example 1 and Comparative Example 2 did not have suitable energization amount and dissolution amount. In Comparative Example 3, since the alloy plating layer was manufactured by Ni—Fe alloy plating, the alloy plating layer did not contain W. Therefore, Comparative Example 3 did not have a suitable energization amount and dissolution amount.
  • Example 2 A non-annealed Al-killed steel sheet having a thickness of 0.3 mm was used as a base plate, and Ni plating with various adhesion amounts was performed under the conditions shown in Table 1 above. Subsequently, Ni— W—Fe alloy plating was plated at various thicknesses. The W content and the Fe content in the Ni—W—Fe alloy plating layer were controlled by adjusting the current density and the iron (II) sulfate addition amount shown in Table 2 above. After the plating, annealing and Ni plating diffusion treatment were performed by performing heat treatment in a non-oxidizing atmosphere at a temperature of 740 ° C. for 30 seconds.
  • Example 41 to 44 A non-annealed ultra-low carbon steel plate having a thickness of 0.3 mm is used as a base plate, and Ni plating with various adhesion amounts is performed under the conditions shown in Table 1 above.
  • a —W—Fe alloy plating was plated to a thickness of 0.5 ⁇ m.
  • the W content and the Fe content in the Ni—W—Fe alloy plating layer were controlled by adjusting the current density and the iron (II) sulfate addition amount shown in Table 2 above.
  • annealing and Ni plating diffusion treatment were performed by performing a heat treatment in a non-oxidizing atmosphere at a temperature of 820 ° C. for 30 seconds.
  • Example 45 to 48 An annealed Al-killed steel plate having a thickness of 0.3 mm was used as a base plate, and Ni plating with various adhesion amounts was performed under the conditions shown in Table 1 above. Subsequently, Ni— with various compositions was applied under the conditions shown in Table 2 above. W—Fe alloy plating was plated to a thickness of 0.5 ⁇ m. The W content and the Fe content in the Ni—W—Fe alloy plating layer were controlled by adjusting the current density and the iron (II) sulfate addition amount shown in Table 2 above. After the plating, heat treatment was performed for 120 seconds at a temperature of 450 ° C. in a non-oxidizing atmosphere.
  • Example 49 to 52 An Al-killed steel sheet having a thickness of 0.3 mm is used as an original sheet, Ni—Fe alloy plating with various adhesion amounts is performed under the conditions shown in Table 3 above, and various compositions are subsequently performed under the conditions shown in Table 2 above.
  • the Ni—W—Fe alloy plating was plated to a thickness of 0.5 ⁇ m.
  • the W content and the Fe content in the Ni—W—Fe alloy plating layer were controlled by adjusting the current density and the iron (II) sulfate addition amount shown in Table 2 above. After the plating, heat treatment was performed for 120 seconds at a temperature of 450 ° C. in a non-oxidizing atmosphere.
  • Example 53 to 55 An annealed Al-killed steel plate having a thickness of 0.3 mm was used as a base plate, and Ni—W—Fe alloy plating of various compositions was plated at a thickness of 1.5 ⁇ m under the conditions shown in Table 2 above.
  • the W content and the Fe content in the Ni—W—Fe alloy plating layer were controlled by adjusting the current density and the iron (II) sulfate addition amount shown in Table 2 above.
  • heat treatment was performed for 120 seconds at a temperature of 450 ° C. in a non-oxidizing atmosphere.
  • Comparative Example 4 An unannealed Al killed steel plate with a thickness of 0.3 mm is used as a base plate, and Ni plating is performed with an adhesion amount of 45 g / m 2 under the conditions shown in Table 1 above. By performing heat treatment for 30 seconds, annealing and Ni plating diffusion treatment were performed. In Comparative Example 4, the Ni—W—Fe alloy plating layer was not formed.
  • Performance evaluation was performed in the same manner as in Test Example 1 above.
  • the obtained test material was pressed into a cylindrical drawn can corresponding to a standard 18650 (diameter 18 mm ⁇ length 65 mm) of a cylindrical lithium ion secondary battery, and then the inner side surface was cut out and evaluated in the same manner.
  • Table 5 below shows the results obtained.
  • the state of the lower Ni layer and the composition of the upper Ni—W—Fe alloy plating layer are FIB processed pieces, JEOL FE-TEM: JEM2100F (acceleration voltage 200 kV) and JEOL EDS: It was confirmed and quantified by JED-2300T (probe diameter: about 2 nm).
  • the balance was Ni and impurities.
  • the content of the Ni—W—Fe alloy was confirmed by the same method as in Test Example 1. Examples 31 to 55 contained a Ni—W—Fe alloy, but Comparative Example 4 did not contain a Ni—W—Fe alloy.
  • Comparative Example 4 did not have a Ni—W—Fe alloy plating layer, it did not have a suitable energization amount and dissolution amount.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

Cette plaque d'acier pour un boîtier d'une cellule secondaire à électrolyte non aqueux est pourvue : d'une plaque d'acier; et d'une couche plaquée d'alliage Ni-W-Fe formée sur la surface de la plaque d'acier, la couche plaquée d'alliage Ni-W-Fe contenant un alliage Ni-W-Fe, et formant la surface intérieure du boîtier de la cellule secondaire à électrolyte non aqueux.
PCT/JP2016/069473 2015-07-07 2016-06-30 Plaque d'acier pour boîtier de cellule secondaire à électrolyte non aqueux, et boîtier de cellule secondaire à électrolyte non aqueux Ceased WO2017006834A1 (fr)

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CN201680027069.0A CN107710446B (zh) 2015-07-07 2016-06-30 非水电解液二次电池壳体用钢板和非水电解液二次电池壳体

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JPWO2022215634A1 (fr) * 2021-04-08 2022-10-13
WO2023085410A1 (fr) * 2021-11-12 2023-05-19 日本製鉄株式会社 Élément soudé
WO2024166934A1 (fr) 2023-02-07 2024-08-15 日本製鉄株式会社 Tôle d'acier traitée en surface
WO2024166933A1 (fr) 2023-02-07 2024-08-15 日本製鉄株式会社 Tôle d'acier traitée en surface et procédé de fabrication de tôle d'acier traitée en surface
JP7640927B1 (ja) * 2024-02-07 2025-03-06 日本製鉄株式会社 表面処理鋼板、表面処理鋼板の製造方法、及び電池部品の製造方法
WO2025142058A1 (fr) * 2023-12-28 2025-07-03 株式会社Jcu Solution de placage d'alliage à base de nickel
WO2025142057A1 (fr) * 2023-12-28 2025-07-03 株式会社Jcu Solution de placage d'alliage à base de nickel

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KR20230150374A (ko) 2021-04-08 2023-10-30 닛폰세이테츠 가부시키가이샤 표면 처리 강판
CN117098876A (zh) * 2021-04-08 2023-11-21 日本制铁株式会社 表面处理钢板
JP7425389B2 (ja) 2021-04-08 2024-01-31 日本製鉄株式会社 表面処理鋼板
JPWO2022215634A1 (fr) * 2021-04-08 2022-10-13
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WO2023085410A1 (fr) * 2021-11-12 2023-05-19 日本製鉄株式会社 Élément soudé
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JP7381985B2 (ja) 2021-11-12 2023-11-16 日本製鉄株式会社 溶接部材
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JP7578899B1 (ja) * 2023-02-07 2024-11-07 日本製鉄株式会社 表面処理鋼板、及び表面処理鋼板の製造方法
WO2024166933A1 (fr) 2023-02-07 2024-08-15 日本製鉄株式会社 Tôle d'acier traitée en surface et procédé de fabrication de tôle d'acier traitée en surface
KR20250123906A (ko) 2023-02-07 2025-08-18 닛폰세이테츠 가부시키가이샤 표면 처리 강판
KR20250126825A (ko) 2023-02-07 2025-08-25 닛폰세이테츠 가부시키가이샤 표면 처리 강판, 및 표면 처리 강판의 제조 방법
EP4663816A1 (fr) 2023-02-07 2025-12-17 Nippon Steel Corporation Tôle d'acier traitée en surface et procédé de fabrication de tôle d'acier traitée en surface
WO2025142058A1 (fr) * 2023-12-28 2025-07-03 株式会社Jcu Solution de placage d'alliage à base de nickel
WO2025142057A1 (fr) * 2023-12-28 2025-07-03 株式会社Jcu Solution de placage d'alliage à base de nickel
JP7640927B1 (ja) * 2024-02-07 2025-03-06 日本製鉄株式会社 表面処理鋼板、表面処理鋼板の製造方法、及び電池部品の製造方法
WO2025169335A1 (fr) * 2024-02-07 2025-08-14 日本製鉄株式会社 Tôle d'acier traitée en surface, procédé de production de tôle d'acier traitée en surface et procédé de production de composant de batterie

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