WO2012127561A1 - Batterie à électrolyte non aqueux - Google Patents

Batterie à électrolyte non aqueux Download PDF

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Publication number
WO2012127561A1
WO2012127561A1 PCT/JP2011/056562 JP2011056562W WO2012127561A1 WO 2012127561 A1 WO2012127561 A1 WO 2012127561A1 JP 2011056562 W JP2011056562 W JP 2011056562W WO 2012127561 A1 WO2012127561 A1 WO 2012127561A1
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Prior art keywords
current collector
young
modulus
resin film
positive electrode
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PCT/JP2011/056562
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English (en)
Japanese (ja)
Inventor
渡辺利幸
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株式会社日立製作所
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Priority to PCT/JP2011/056562 priority Critical patent/WO2012127561A1/fr
Priority to JP2011554318A priority patent/JPWO2012127561A1/ja
Publication of WO2012127561A1 publication Critical patent/WO2012127561A1/fr

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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
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/665—Composites
    • H01M4/667—Composites in the form of layers, e.g. coatings
    • 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 non-aqueous electrolyte battery such as a lithium ion secondary battery.
  • Non-aqueous electrolyte batteries represented by lithium ion secondary batteries are widely used as power sources for portable devices such as mobile phones and notebook personal computers because of their high energy density. As the performance of portable devices increases, the capacity of lithium ion secondary batteries tends to increase further, and it is necessary to further improve the energy density.
  • the nonaqueous electrolyte battery includes electrodes (positive electrode and negative electrode) in which an active material-containing layer is provided on one side or both sides of a current collector.
  • the current collector is usually formed from a metal foil.
  • a resin is used in order to reduce the weight of the current collector, which is a component of the nonaqueous electrolyte battery, to the limit and improve the energy density of the nonaqueous electrolyte battery.
  • a current collector in which a conductive thin film is formed on the surface of a film has been proposed (see, for example, Patent Document 1 and Patent Document 2).
  • the present invention solves the above-described problems and provides a nonaqueous electrolyte battery that is lightweight and has high charge / discharge characteristics.
  • the non-aqueous electrolyte battery of the present invention is a non-aqueous electrolyte battery including a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the positive electrode and the negative electrode are a current collector and a current collector, respectively.
  • An active material-containing layer formed thereon, the current collector includes a resin film and a conductive layer provided on at least one surface of the resin film, and the active material-containing layer is formed of the conductive layer.
  • the Young's modulus Ya in the arbitrary direction of the current collector and the Young's modulus Yb in the direction orthogonal to the arbitrary direction are 4 GPa or more and 17 GPa or less, respectively, and the difference between the Young's modulus Ya and the Young's modulus Yb
  • is 5.0 or less.
  • a non-aqueous electrolyte battery that is lightweight and has high charge / discharge characteristics can be provided.
  • FIG. 1 is a schematic cross-sectional view showing an example of an electrode used in the nonaqueous electrolyte battery of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing another example of an electrode used in the nonaqueous electrolyte battery of the present invention.
  • 3A is a perspective view for explaining an electrode body used in the present invention
  • FIG. 3B is a perspective view showing a state in which the electrode body is housed in an exterior material
  • FIG. 3C is a view in which the electrode body is housed in an exterior material.
  • the nonaqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte.
  • the positive electrode and the negative electrode each include a current collector and an active material-containing layer formed on the current collector, and the current collector is disposed on at least one surface of the resin film and the resin film.
  • the active material-containing layer is formed on the conductive layer.
  • the Young's modulus Ya in the arbitrary direction of the current collector and the Young's modulus Yb in the direction orthogonal to the arbitrary direction are 4 GPa or more and 17 GPa or less, respectively, and the absolute value of the difference between the Young's modulus Ya and the Young's modulus Yb
  • the Young's modulus Ya in the arbitrary direction of the current collector and the Young's modulus Yb in the direction orthogonal to the arbitrary direction are 4 GPa or more and 17 GPa or less, and more preferably 7 GPa or more and 17 GPa or less.
  • swelling by the temperature rise of a collector can be suppressed.
  • at least one of the Young's moduli Ya and Yb is less than 4 GPa, the current collector expands due to temperature rise, and the charge / discharge characteristics of the battery deteriorate.
  • of the difference between the Young's modulus Ya and the Young's modulus Yb is set to 5.0 or less.
  • the Young's modulus of the current collector including the resin film and the conductive layer is measured based on the following measurement method.
  • the measurement environment is a temperature of 23 ° C. ⁇ 5 ° C. and a relative humidity of 50% ⁇ 10%.
  • Using a tensile tester as the measuring device set the measurement sample with the load cell interval of the tensile tester set to 10 cm, pull the sample at a pulling speed of 10 mm / min, read the weight at that time, and read the sample at a load of 1.5 N
  • the Young's modulus is obtained by dividing the difference between the amount of elongation and the amount of elongation of the sample at 0.5 N by the thickness of the sample.
  • the thickness of the resin film is preferably 3 ⁇ m or more and 20 ⁇ m or less, and more preferably 4.5 ⁇ m or more and 10 ⁇ m or less. If it is less than 3 ⁇ m, it is too thin to make it difficult to process the film, and it tends to be difficult to ensure the strength of the film. On the other hand, when the thickness exceeds 20 ⁇ m, the volume occupied by the film increases, and in the case of a battery having the same volume, the volume of the active material-containing layer decreases by the volume increase of the film, so the volume energy density of the battery decreases.
  • the thickness of the conductive layer is preferably 100 nm or more and 3 ⁇ m or less. If it is less than 100 nm, the electrical resistance as a current collector increases, and the current collection effect tends to decrease. If the thickness exceeds 3 ⁇ m, the stress of the conductive layer increases, and the current collector may be warped and undulated, making it difficult to use it as a current collector.
  • FIG. 1 and FIG. 2 the same parts are denoted by the same reference numerals, and redundant description is omitted.
  • FIG. 1 is a schematic cross-sectional view showing an example of an electrode used in the nonaqueous electrolyte battery of the present invention.
  • an electrode (positive electrode or negative electrode) 10 includes a current collector 11 and an active material containing layer 12 formed on both surfaces of the current collector 11.
  • the current collector 11 includes a resin film 11a and conductive layers 11b provided on both surfaces of the resin film 11a, and the active material-containing layer 12 and the conductive layer 11b are electrically joined.
  • the resin constituting the resin film 11a for example, one resin selected from the group consisting of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), aramid, polyethylene, polypropylene, polystyrene, polyamide and polyimide is used. Can do.
  • the resin film 11a it is good also as a conductive resin film by mixing a conductive filler etc. with the said resin. As described above, the thickness of the resin film 11a is set to 3 ⁇ m or more and 20 ⁇ m or less.
  • the conductive layer 11b As a material constituting the conductive layer 11b, for example, a metal such as aluminum or copper, or a carbon material such as graphite can be used.
  • the method of forming the conductive layer 11b on the resin film 11a is not limited, for example, a vacuum deposition method, a sputtering method, a plating method, or the like can be used.
  • the thickness of the conductive layer 11b is set to 100 nm or more and 3 ⁇ m or less.
  • the Young's modulus of the current collector 11 can be substantially controlled by adjusting the Young's modulus of the resin film 11a. Moreover, the Young's modulus of the resin film 11a can be controlled by adjusting the draw ratio, for example. Generally, increasing the draw ratio increases the Young's modulus of the resin film.
  • the active material-containing layer 12 is formed of an active material, a conductive aid, a binder, and the like.
  • the thickness of the active material-containing layer 12 is not particularly limited, but if it is too thin, the volume of the active material-containing layer 12 is relatively reduced in the entire battery, and is preferably 150 ⁇ m or more per side.
  • FIG. 2 is a schematic cross-sectional view showing another example of an electrode used in the nonaqueous electrolyte battery of the present invention.
  • the electrode 20 is the electrode 10 shown in FIG. 1 except that the conductive layer 11b is provided only on one surface of the resin film 11a and the active material-containing layer 12 is formed only on the conductive layer 11b. It is the same composition as.
  • FIG. 3A is a perspective view for explaining an electrode body used in the present embodiment
  • FIG. 3B is a perspective view showing a state in which the electrode body is housed in an exterior material
  • FIG. 3C is an electrode body as an exterior material. It is a perspective view of the stored state.
  • the electrode body 30 is produced by laminating a rectangular positive electrode 31 and a rectangular negative electrode 32 with a rectangular separator 33 interposed therebetween.
  • a positive electrode lead terminal 31 a is provided at one end of the positive electrode 31, and a negative electrode lead terminal 32 a is provided at one end of the negative electrode 32.
  • a flexible rectangular exterior material 34 is valley-folded and is composed of a first exterior surface 34a and a second exterior surface 34b.
  • An electrode housing portion 35 is formed on the first exterior surface 34a by deep drawing.
  • each positive electrode lead terminal 31a (FIG. 3A) and each negative electrode lead terminal 32a (FIG. 3A) are overlapped and welded to form a positive electrode lead terminal portion 36a and a negative electrode lead terminal portion 36b, respectively.
  • the electrode body 30 is housed in an electrode housing portion 35 formed by a first exterior surface 34a and a second exterior surface 34b that are valley-folded together with the nonaqueous electrolyte. Further, among the outer periphery of the exterior member 34, three sides other than the one side that is valley-folded are joined with a predetermined width to form the sealing portions 37a, 37b, and 37c. The positive electrode lead terminal portion 36 a and the negative electrode lead terminal portion 36 b are drawn out from the sealing portion 37 c facing one side of the exterior material 34 that is folded down.
  • the positive electrode 31 is a mixture of a positive electrode active material, a positive electrode conductive additive, a positive electrode binder, and the like, and a positive electrode mixture paste obtained by sufficiently kneading the mixture with a solvent. After coating and drying, the positive electrode mixture layer (positive electrode active material-containing layer) can be formed by controlling it to a predetermined thickness and a predetermined electrode density.
  • a lithium manganese composite oxide having a spinel structure having a composition of the general formula LiMn 2 O 4 (a part of the constituent elements is replaced by an element such as Ge, Zr, Mg, Ni, Al, Co)
  • a lithium cobalt composite oxide having a composition of the general formula LiCoO 2 ( a composite in which some of the constituent elements are substituted with elements such as Ni, Al, Mg, Zr, Ti, and B)
  • a lithium nickel composite oxide having a composition of the general formula LiNiO 2 (a composite oxide in which a part of the constituent elements is substituted with an element such as Co, Al, Mg, Zr, Ti, B, etc.)
  • composite oxide of a layered structure such as, lithium-containing composite oxide of olivine structure having a composition of general formula LiMPO 4 (where, M is at least one selected from Ni, Co and Fe).
  • the positive electrode conductive auxiliary agent may be added as necessary for the purpose of improving the electric conductivity of the positive electrode mixture layer.
  • the conductive powder used as the conductive auxiliary agent include carbon black, ketjen black, and acetylene black. Carbon powder such as fibrous carbon and graphite, and metal powder such as nickel powder can be used.
  • Examples of the positive electrode binder include, but are not limited to, polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE).
  • PVDF polyvinylidene fluoride
  • PTFE polytetrafluoroethylene
  • the positive electrode current collector one having the same structure as the current collector 10 shown in FIG. 1 and using, for example, a PET film as the resin film 11a and an aluminum layer as the conductive layer 11b is used. .
  • N-methyl-2-pyrrolidone for example, N-methyl-2-pyrrolidone or the like can be used.
  • the negative electrode 32 is obtained by using a negative electrode mixture paste obtained by sufficiently kneading a mixture containing a negative electrode active material, a negative electrode conductive additive, a negative electrode binder, and the like, with both sides of the negative electrode current collector according to the present invention. After coating and drying, the negative electrode mixture layer (negative electrode active material-containing layer) can be formed by controlling it to a predetermined thickness and a predetermined electrode density.
  • Examples of the negative electrode active material include carbon materials such as natural graphite or artificial graphite such as massive graphite, flaky graphite, and earthy graphite, but are not limited thereto as long as lithium ions can be occluded / released. .
  • the negative electrode current collector one having the same structure as the current collector 10 shown in FIG. 1 and using a PET film as the resin film 11a and a copper layer as the conductive layer 11b is used, for example. .
  • the negative electrode conductive additive As the negative electrode conductive additive, the negative electrode binder, and the solvent, the same materials as those used for the positive electrode can be used.
  • separator 33 it is preferable to use a separator having a two-layer structure including a heat-resistant porous substrate having a thickness of 10 to 50 ⁇ m and a microporous film made of a thermoplastic resin having a thickness of 10 to 30 ⁇ m.
  • the heat-resistant porous substrate may be formed of, for example, a fibrous material having a heat-resistant temperature of 150 ° C. or higher, and the fibrous material may be cellulose or a modified product thereof, polyolefin, polyester, polyacrylonitrile, aramid, polyamide. It can be formed of at least one material selected from the group consisting of imides and polyimides. More specifically, sheet-like materials such as woven fabrics and nonwoven fabrics (including paper) made of the above materials can be used as heat-resistant porous materials. It can be used as a quality substrate.
  • the microporous film made of the above thermoplastic resin has a melting point of, for example, 80 to 140 ° C. in order to give the separator a shutdown function that closes the micropores at a certain temperature or higher (100 to 140 ° C.) and increases the resistance.
  • a microporous film made of a certain thermoplastic resin can be used. More specifically, a microporous sheet made of an olefin polymer such as polypropylene and polyethylene having resistance to organic solvents and hydrophobicity can be used.
  • an inorganic filler may be included in the heat-resistant porous substrate, and an inorganic filler layer having a thickness of about 3 to 10 ⁇ m is provided on the microporous film. May be.
  • the inorganic filler for example, particles of at least one inorganic oxide selected from the group consisting of alumina, silica, titanium oxide, zirconium oxide, and boehmite can be used.
  • the thickness of the separator 33 is not particularly limited, but is usually 25 to 90 ⁇ m.
  • a laminated film in which a metal layer such as aluminum and a thermoplastic resin layer are laminated can be used.
  • a laminate film in which a thermoplastic resin layer having a thickness of 20 to 50 ⁇ m is provided outside an aluminum layer having a thickness of 20 to 100 ⁇ m and an adhesive layer having a thickness of 20 to 100 ⁇ m is provided on the inside can be used. Thereby, sealing part 37a, 37b, 37c can be joined reliably by heat welding.
  • the thickness of the exterior material 34 is not particularly limited, but is usually 60 to 250 ⁇ m.
  • non-aqueous electrolyte a solution (non-aqueous electrolyte) in which a lithium salt is dissolved in an organic solvent is used.
  • organic solvent examples include vinylene carbonate (VC), propylene carbonate (PC), ethylene carbonate (EC), butylene carbonate (BC), dimethyl carbonate (DMC), diethyl carbonate (DEC), and methyl ethyl carbonate (MEC).
  • VC vinylene carbonate
  • PC propylene carbonate
  • EC ethylene carbonate
  • BC butylene carbonate
  • DMC dimethyl carbonate
  • DEC diethyl carbonate
  • MEC methyl ethyl carbonate
  • the lithium salt for example, it can be used at least one lithium salt selected from LiClO 4, LiPF 6, LiBF 4 , LiAsF 6, LiSbF 6, LiCF 3 SO 3 and the like.
  • the concentration of Li ions in the nonaqueous electrolytic solution may be 0.5 to 1.5 mol / L.
  • non-aqueous electrolyte battery an example using a laminated electrode body in which rectangular electrodes are stacked via a separator is shown.
  • a wound electrode body in which a long electrode is wound via a separator. May be used.
  • Example 1 Preparation of current collector> The current collector used for the positive electrode and the negative electrode was produced as follows.
  • a PEN film “Teonex” (trade name) manufactured by Teijin Ltd. having a thickness of 6.1 ⁇ m was used as the resin film.
  • the resin film is set on the unwinding part of the vacuum deposition apparatus, and after reducing the pressure to 1.5 ⁇ 10 ⁇ 3 Pa, the resin film is conveyed at a conveyance speed of 60 m / min and a conveyance tension through a ⁇ 20 ° C. cooling drum.
  • the vehicle was run at 100 N / m.
  • aluminum having a purity of 99.99% by weight was evaporated by heating with an electron beam (output 5.1 kW), aluminum was deposited on the surface of the resin film to form an aluminum thin film, and the resin film was wound up.
  • the thickness of the aluminum thin film was about 150 nm.
  • the transport tension was set to 80 N / min on the surface opposite to the surface on which the aluminum thin film was formed of the resin film wound up earlier, As a result, a positive electrode current collector in which an aluminum thin film was formed on both surfaces of the resin film was produced.
  • the Young's modulus of the produced current collector was measured as follows. First, a sample having a width of 12.65 mm and a length of 15 cm was cut out from the produced current collector in an arbitrary direction to be a first sample, and the cutting direction of the first sample was taken as a first direction.
  • the first test sample is set with the load cell interval of the tensile tester set to 10 cm, pulled in the length direction at a speed of 10 mm / min, the weight at that time is read, and the amount of elongation of the sample when the weight is 1.5 N
  • the Young's modulus Ya in the first direction was determined by dividing the difference between the sample elongation at 0.5N and the thickness of the first sample.
  • the size of the sample used for measuring the Young's modulus of the current collector is not limited to the size of the sample.
  • the second sample is cut out in the same manner as the first sample except that it is cut out from the same current collector in the direction perpendicular to the cutting direction of the first sample, the cutting direction of the second sample is set as the second direction,
  • the Young's modulus Yb in the second direction was determined in the same manner as in the first sample except that the second sample was used.
  • the above Young's modulus was measured in an ambient environment at a temperature of 23 ° C. ⁇ 5 ° C. and a relative humidity of 50% ⁇ 10%.
  • ⁇ Measurement of temperature change of current collector length> As a measurement sample of the temperature change amount of the current collector length, a first sample and a second sample are prepared in the same manner as in the measurement of the Young's modulus of the current collector, and the first sample and The amount of temperature change in the length of the second sample was measured. First, the length of each sample in the length direction was measured at an ambient temperature of 10 ° C., and the length was defined as L1. Next, the ambient temperature was raised to 29 ° C., the length in the length direction of each sample was measured, and the length was defined as L2. Subsequently, (L2-L1) / L1 was calculated, and the amount of temperature change was determined in ppm.
  • a nonaqueous electrolyte battery was produced using the produced current collector as follows.
  • a porous laminated film was prepared by laminating a porous film in which a boehmite particle layer having a thickness of 5 ⁇ m was formed on a microporous film made of polyethylene having a thickness of 16 ⁇ m and a nonwoven fabric made of polyethylene terephthalate having a thickness of 20 ⁇ m.
  • the total thickness of the porous laminated film (separator) was about 20 ⁇ m, and the opening ratio was 50%.
  • the separator is disposed between the positive electrode and the negative electrode so that the nonwoven fabric is in contact with the positive electrode, and each positive electrode and each negative electrode are laminated.
  • each positive electrode lead terminal was welded to form a negative electrode lead terminal portion, and then inserted into an outer packaging material made of a laminate film.
  • a solution obtained by dissolving LiPF 6 at a ratio of 1.2 mol / L in a solvent in which ethylene carbonate and diethyl carbonate were mixed at a volume ratio of 1: 2 in a non-aqueous electrolyte was injected into the exterior material. After that, the opening was sealed to produce a nonaqueous electrolyte battery.
  • Example 2 instead of the PEN film as a resin film, a current collector was prepared in the same manner as in Example 1 except that a PET film “Lumirror” (trade name) manufactured by Toray Industries, Inc. having a thickness of 6.1 ⁇ m was used. The temperature change of the Young's modulus of the current collector and the length of the current collector was measured to produce a nonaqueous electrolyte battery.
  • a PET film “Lumirror” trade name
  • Example 3 Instead of the PEN film as a resin film, a current collector was prepared in the same manner as in Example 1 except that an aramid film “Mikutron” (trade name) manufactured by Toray Industries, Inc. having a thickness of 3.6 ⁇ m was used. The temperature change of the Young's modulus of the current collector and the length of the current collector was measured to produce a nonaqueous electrolyte battery.
  • an aramid film “Mikutron” trade name
  • Comparative Example 1 After applying a polyvinyl alcohol (PVA) aqueous solution to one side of the PET film used in Example 2, it was dried at 80 ° C. to form a PVA layer having a thickness of 1.0 ⁇ m to prepare a PET film with reduced strength.
  • a current collector was prepared in the same manner as in Example 2 except that the PET film was used, and the temperature change in the Young's modulus of the current collector and the length of the current collector was measured. A battery was produced.
  • PVA polyvinyl alcohol
  • Example 2 The PEN film used in Example 1 was pulled in a dryer at 130 ° C. with a tension of 150 N / m in the longitudinal direction to increase the strength in the longitudinal direction, and the PEN film was used except that the PEN film was used.
  • a current collector was prepared in the same manner as in Example 1, and the temperature change of the Young's modulus of the current collector and the length of the current collector was measured to prepare a nonaqueous electrolyte battery.
  • the discharge capacity is less than 90% with respect to the discharge capacity of the first cycle at the 225th cycle, and with respect to the discharge capacity of the first cycle at the 348th cycle in the battery of Comparative Example 2.
  • the number of cycles in which the discharge capacity was less than 90% and the discharge capacity was less than 90% was defined as the life cycle number.
  • the present invention can provide a nonaqueous electrolyte battery that is lightweight and has high charge / discharge characteristics, and can be widely used as a power source for portable devices such as mobile phones and notebook personal computers.
  • Electrode 11 Current collector 11a Resin film 11b Conductive layer 12 Active material containing layer 20 Electrode 30 Electrode body 31 Positive electrode 31a Positive electrode lead terminal 32 Negative electrode 32a Negative electrode lead terminal 33 Separator 34 Exterior material 34a First exterior surface 34b Second exterior surface 35 Electrode storage part 36a Positive electrode lead terminal part 36b Negative electrode lead terminal part 37a, 37b, 37c Sealing part

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Abstract

L'invention porte sur une batterie à électrolyte non aqueux qui comporte une électrode positive, une électrode négative, un séparateur et des électrolytes non aqueux. L'électrode positive et l'électrode négative comprennent chacune un collecteur de courant et une couche contenant un matériau actif formé sur le dessus du collecteur. Le collecteur de courant comprend un film de résine et une couche conductrice disposée sur au moins un côté du film de résine. La couche contenant un matériau actif est formée sur le dessus de la couche conductrice. La batterie à électrolyte non aqueux est caractérisée en ce que le module de Young Ya pour une direction arbitraire du collecteur de courant et le module de Young Yb pour une direction perpendiculaire à celle de la direction arbitraire sont chacun entre 4 GPa et 17 GPa, la valeur absolue |Ya - Yb| de la différence entre le module de Young Ya et le module de Young Yb étant 5,0 ou moins.
PCT/JP2011/056562 2011-03-18 2011-03-18 Batterie à électrolyte non aqueux WO2012127561A1 (fr)

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PCT/JP2011/056562 WO2012127561A1 (fr) 2011-03-18 2011-03-18 Batterie à électrolyte non aqueux
JP2011554318A JPWO2012127561A1 (ja) 2011-03-18 2011-03-18 非水電解質電池

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JP2019021383A (ja) * 2017-07-11 2019-02-07 日産自動車株式会社 電池
JP2019021384A (ja) * 2017-07-11 2019-02-07 日産自動車株式会社 電池
KR20210005704A (ko) * 2019-04-28 2021-01-14 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 부극 집전체, 부극판, 전기화학 장치 및 장치
US10923721B2 (en) 2015-11-10 2021-02-16 Samsung Sdi Co., Ltd. Negative electrode for a rechargeable lithium battery and rechargeable lithium battery comprising same
US20210151769A1 (en) * 2019-07-01 2021-05-20 Contemporary Amperex Technology Co., Limited Positive electrode piece, electrochemical device and apparatus
WO2021145344A1 (fr) * 2020-01-17 2021-07-22 富士フイルム株式会社 Batterie secondaire à électrolyte non aqueux, collecteur de courant et procédé de fabrication de batterie secondaire à électrolyte non aqueux
WO2022041443A1 (fr) * 2020-08-22 2022-03-03 昆山鑫美源电子科技有限公司 Procédé de préparation d'un film mince conducteur, matériau de collecte et de transmission de courant électrique, et dispositif de stockage d'énergie
JP2022526744A (ja) * 2019-05-31 2022-05-26 寧徳時代新能源科技股▲分▼有限公司 正極集電体、正電極シート、電気化学装置及び装置
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JP2022528846A (ja) * 2019-05-31 2022-06-16 寧徳時代新能源科技股▲分▼有限公司 負極集電体、負極シート及び電気化学装置
JP2022528832A (ja) * 2019-05-31 2022-06-16 寧徳時代新能源科技股▲分▼有限公司 負極集電体、負極シート、電気化学装置及び装置
JP2022531162A (ja) * 2019-05-31 2022-07-06 寧徳時代新能源科技股▲分▼有限公司 複合集電体、電極シート及び電気化学装置
JP7357690B2 (ja) 2019-05-31 2023-10-06 寧徳時代新能源科技股▲分▼有限公司 複合集電体、電極シート及び電気化学装置
JP7344309B2 (ja) 2019-05-31 2023-09-13 寧徳時代新能源科技股▲分▼有限公司 正極集電体、正電極シート、電気化学装置及び装置
JP7271390B2 (ja) 2019-05-31 2023-05-11 寧徳時代新能源科技股▲分▼有限公司 リチウムイオン二次電池、セル及び負極シート
JP2022526744A (ja) * 2019-05-31 2022-05-26 寧徳時代新能源科技股▲分▼有限公司 正極集電体、正電極シート、電気化学装置及び装置
US20210151769A1 (en) * 2019-07-01 2021-05-20 Contemporary Amperex Technology Co., Limited Positive electrode piece, electrochemical device and apparatus
US11804604B2 (en) * 2019-07-01 2023-10-31 Contemporary Amperex Technology Co., Limited Positive electrode piece in a battery, electrochemical device and apparatus
WO2021145344A1 (fr) * 2020-01-17 2021-07-22 富士フイルム株式会社 Batterie secondaire à électrolyte non aqueux, collecteur de courant et procédé de fabrication de batterie secondaire à électrolyte non aqueux
JPWO2021145344A1 (fr) * 2020-01-17 2021-07-22
CN114830383A (zh) * 2020-01-17 2022-07-29 富士胶片株式会社 非水电解质二次电池、集电体及非水电解质二次电池的制造方法
EP4092788A4 (fr) * 2020-01-17 2024-01-10 Fujifilm Corp Batterie secondaire à électrolyte non aqueux, collecteur de courant et procédé de fabrication de batterie secondaire à électrolyte non aqueux
WO2022041443A1 (fr) * 2020-08-22 2022-03-03 昆山鑫美源电子科技有限公司 Procédé de préparation d'un film mince conducteur, matériau de collecte et de transmission de courant électrique, et dispositif de stockage d'énergie

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