WO2022045295A1 - Couche conductrice d'ions pour des dispositifs de stockage d'électricité - Google Patents

Couche conductrice d'ions pour des dispositifs de stockage d'électricité Download PDF

Info

Publication number
WO2022045295A1
WO2022045295A1 PCT/JP2021/031520 JP2021031520W WO2022045295A1 WO 2022045295 A1 WO2022045295 A1 WO 2022045295A1 JP 2021031520 W JP2021031520 W JP 2021031520W WO 2022045295 A1 WO2022045295 A1 WO 2022045295A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive layer
acrylic polymer
ion conductive
mass
storage device
Prior art date
Application number
PCT/JP2021/031520
Other languages
English (en)
Japanese (ja)
Inventor
小塚寛斗
福田泰紀
後藤英樹
平石篤司
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to JP2022545733A priority Critical patent/JPWO2022045295A1/ja
Publication of WO2022045295A1 publication Critical patent/WO2022045295A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/04—Hybrid capacitors
    • H01G11/06—Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/54—Electrolytes
    • H01G11/56—Solid electrolytes, e.g. gels; Additives therein
    • 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
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0562—Solid materials
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/42—Acrylic resins
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/431—Inorganic material
    • H01M50/434—Ceramics
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/443—Particulate material
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • 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 an ion conductive layer for a power storage device.
  • Such a power storage device is generally provided with an electrode on which a mixture layer containing an active material or the like is coated on a metal foil, and an electrolyte for transferring ions is filled between the electrodes.
  • a liquid, a semi-solid, or a solid is used for this electrolyte depending on the purpose.
  • a liquid a solvent containing a metal ion is used
  • a semi-solid a gel containing the liquid is used, and in the case of a solid.
  • solids with ionic conductivity is known to use solids with ionic conductivity.
  • a separator is provided between the electrodes from the viewpoint of preventing a short circuit between the electrodes.
  • a separator is provided between the electrodes from the viewpoint of preventing a short circuit between the electrodes.
  • a storage battery using a solid electrolyte it is known to use a mixed film of a solid electrolyte and a resin from the viewpoint of preventing peeling because it is easy to peel off only with the solid electrolyte.
  • the electrodes and separators may be displaced, which may reduce the durability, and an adhesive layer is provided from the viewpoint of preventing the displacement.
  • a surface protective film is provided on the surfaces of the positive electrode and the negative electrode from the viewpoint of suppressing the precipitation of metal due to a local reaction and the formation of a fixing film having high ion resistance due to denaturation of an electrolyte.
  • Patent Documents 1 and 2 An adhesive layer for a separator and an electrode surface protective film have been proposed (Patent Documents 1 and 2).
  • Patent Document 1 includes a particulate polymer A having a glass transition temperature of ⁇ 50 to 5 ° C. and a particulate polymer B having a glass transition temperature of 50 to 120 ° C. Disclosed is a method for producing an electrode / separator laminate, wherein the adhesive layer has an average thickness of 0.2 to 1.0 ⁇ m and the thermal pressure bonding is performed at 50 to 100 ° C.
  • the particulate polymer A composed of 86.8 parts of ethyl acrylate, 10 parts of acrylonitrile, 2 parts of methacrylic acid and 1.2 parts of N-methylol acrylamide, 18 parts of butyl acrylate, 80 parts of styrene, and acrylonitrile
  • the particulate polymer B consisting of 2 parts, 2 parts of methacrylic acid and 1.2 parts of acrylamide is mixed so that the solid content weight ratio (particle-like polymer A / particle-like polymer B) is 15/85.
  • Patent Document 2 contains 0 monomer units containing a water-soluble polymer, an inorganic filler, and a hydrophilic group selected from the group consisting of a carboxylic acid group, a hydroxyl group and a sulfonic acid group.
  • a porous film containing a water-insoluble particulate polymer containing .5 to 40% by mass is disclosed.
  • a particulate polymer composed of 80 parts of ethyl acrylate, 15 parts of acrylonitrile and 5 parts of itaconic acid was obtained.
  • Patent Document 3 discloses a binder for a power storage device electrode containing polymer particles having ion permeability and a specific elastic change rate. And in Examples, polymer particles composed of 97% by mass of ethyl acrylate and 3% by mass of acrylic acid are disclosed.
  • the present disclosure is, in one embodiment, an ionic conductive layer arranged between a positive electrode and a negative electrode of a power storage device, wherein the ionic conductive layer contains an acrylic polymer, and the acrylic polymer is the following formula (I).
  • the content of the structural unit (A) in all the structural units of the acrylic polymer is 88% by mass or more and 100% by mass or less, and the ionic conductive layer contains the structural unit (A) derived from the compound represented by.
  • the present invention relates to an ion conductive layer for a power storage device having a thickness of more than 1 ⁇ m and 500 ⁇ m or less.
  • R 1 represents a hydrogen atom or a methyl group.
  • R 2 represents a linear or branched alkyl group having 1 or more and 3 or less carbon atoms.
  • X indicates -O- or -NH-.
  • the present disclosure relates, in one aspect, to an acrylic polymer composition for forming the ionic conductive layer of the present disclosure.
  • the present disclosure relates to, in one aspect, a member for a power storage device containing the ion conductive layer of the present disclosure and having a thickness of the ion conductive layer of more than 1 ⁇ m and 500 ⁇ m or less.
  • the present disclosure relates to a power storage device having the power storage device member of the present disclosure in one aspect.
  • the present disclosure is, in one embodiment, a method for forming an ionic conductive layer for a power storage device, wherein a slurry containing an acrylic polymer composition is provided so that the thickness of the ionic conductive layer is more than 1 ⁇ m and 500 ⁇ m or less.
  • the acrylic polymer composition comprises particles of the acrylic polymer, and the acrylic polymer comprises a step of applying the coating to the surface of the substrate and a step of drying the applied slurry to form an ionic conductive layer.
  • the content of the structural unit (A) in all the structural units of the acrylic polymer is 88% by mass or more and 100% by mass or less, including the structural unit (A) derived from the compound represented by the following formula (I).
  • R 1 represents a hydrogen atom or a methyl group.
  • R 2 represents a linear or branched alkyl group having 1 or more and 3 or less carbon atoms.
  • X indicates -O- or -NH-.
  • FIG. 1 is a schematic diagram of a bipolar battery.
  • the adhesive layer itself disclosed in Patent Document 1 has poor ionic conductivity, it is described that if the thickness exceeds 1 ⁇ m, the pores of the porous polyolefin film are blocked and the ionic conductivity is impaired.
  • the ionic conductivity of the coalescence itself is not mentioned, and the battery characteristics of the electrode sufficient for the above-mentioned request cannot be obtained.
  • the porous film disclosed in Patent Document 2 has poor ionic conductivity of the polymer, if the content of the water-soluble polymer and the particulate polymer is large with respect to the inorganic filler, the pores are covered and Li moves.
  • Patent Document 3 The polymer particles of Patent Document 3 are used as a binder for electrodes, and there is no mention of using them for forming an ionic conductive layer.
  • the present disclosure provides, in one aspect, an ion conduction layer for a power storage device that can improve the battery characteristics of the power storage device.
  • the present disclosure is based on the finding that the battery characteristics of a power storage device can be improved by forming the ion conduction layer for the power storage device with a predetermined acrylic polymer.
  • the present disclosure is, in one embodiment, an ionic conductive layer arranged between the positive electrode and the negative electrode of the power storage device, and the ionic conductive layer is also referred to as an acrylic polymer (hereinafter, also referred to as "the acrylic polymer of the present disclosure").
  • the acrylic polymer contains the structural unit (A) derived from the compound represented by the above formula (I), and the content of the structural unit (A) in all the structural units of the acrylic polymer is
  • the present invention relates to an ion conducting layer for a power storage device (hereinafter, also referred to as “the ion conducting layer of the present disclosure”), which is 88% by mass or more and 100% by mass or less, and the thickness of the ion conducting layer is more than 1 ⁇ m and 500 ⁇ m or less. According to the present disclosure, it is possible to provide an ion conductive layer for a power storage device that can improve the battery characteristics of the power storage device.
  • a power storage device having excellent battery characteristics By using the ion conducting layer of the present disclosure for an electrolyte, a separator, a solid electrolyte mixed film, an adhesive layer such as an electrode and a separator, a surface protection layer, etc. of a power storage device, a power storage device having excellent battery characteristics can be obtained. ..
  • the acrylic polymer contained in the ionic conduction layer for a power storage device is represented by a (meth) acrylic acid ester (formula (I)) having a linear or branched alkyl group having 1 or more and 3 or less carbon atoms. It is considered that having the structural unit (A) derived from the compound) has a high affinity for the metal ion and the electrolytic solution used in the energy storage device, and can prevent the movement of the metal ion from being hindered.
  • the power storage device manufactured by using the ion conductive layer of the present disclosure has a high internal resistance of the battery. It is thought that it can be suppressed and the battery characteristics can be improved. However, these are estimates and the present disclosure may not be construed as limiting to these mechanisms.
  • the ion conducting layer of the present disclosure is an ion conducting layer arranged between the positive electrode and the negative electrode of the power storage device in the power storage device that transfers ions between the positive electrode and the negative electrode.
  • the ion conductive layer of the present disclosure is a resin-containing layer capable of ion conduction for the purpose of protecting and adhering electrodes, safety and durability of a power storage device, and the like in one or a plurality of embodiments.
  • the ion conducting layer of the present disclosure may be arranged at any place as long as it is between the positive electrode and the negative electrode.
  • Examples of the place where the ion conductive layer of the present disclosure is arranged include a negative electrode surface (negative electrode protective layer, etc.), an electrolyte layer, a separator surface (adhesive layer, etc.), a separator itself, and a positive electrode surface (positive electrode protective layer, etc.). .. By arranging the ion conduction layer of the present disclosure at at least one of these locations, the battery characteristics of the power storage device can be improved.
  • the ionic conductive layer of the present disclosure includes the acrylic polymer of the present disclosure.
  • the content of the acrylic polymer of the present disclosure in the ion conductive layer of the present disclosure is preferably 1% by mass or more, more preferably 2% by mass or more, and further preferably 3% by mass or more, from the viewpoint of the performance and manufacture of the power storage device.
  • the ionic conductive layer of the present disclosure may contain a polymer other than the acrylic polymer of the present disclosure.
  • the content of the acrylic polymer of the present disclosure in the polymer of the ion conductive layer of the present disclosure is preferably 75% by mass or more, more preferably 85% by mass or more, and 90% by mass or more from the viewpoint of the performance and manufacture of the power storage device. Is more preferable, and 100% by mass or less is preferable.
  • the polymer other than the acrylic polymer of the present disclosure include an acrylic polymer, a styrene polymer, a fluoropolymer, a cellulosic polymer, etc., in which the content of the structural unit (A) in all the structural units is less than 88% by mass. ..
  • the acrylic polymer of the present disclosure contains a structural unit (A) described later.
  • the structural unit (A) is a structural unit derived from a monofunctional monomer of a compound described later.
  • the monofunctional monomer means a monomer having one unsaturated bond.
  • the acrylic polymer of the present disclosure may further contain a structural unit (B) and / or a structural unit (C) described later in one or more embodiments.
  • At least one selected from the copolymers containing the copolymers may be mentioned.
  • the acrylic polymer may be one kind or a combination of two or more kinds.
  • the structural unit (A) is a structural unit derived from a compound represented by the following formula (I) (hereinafter, also referred to as “monomer (A)”).
  • the monomer (A) may be used alone or in combination of two or more.
  • R 1 represents a hydrogen atom or a methyl group from the viewpoint of ease of synthesis, and a hydrogen atom is more preferable.
  • R 2 represents a linear or branched alkyl group having 1 or more and 3 or less carbon atoms from the viewpoint of affinity with metal ions and an electrolytic solution, and an alkyl group having 1 to 2 carbon atoms is more preferable and has 2 carbon atoms. Alkyl group of is more preferred.
  • X indicates -O- or -NH-.
  • Examples of the monomer (A) include alkyl ester (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, normal propyl (meth) acrylate, and isopropyl (meth) acrylate; methyl (meth) acrylamide and ethyl.
  • alkyl ester (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, normal propyl (meth) acrylate, and isopropyl (meth) acrylate
  • methyl (meth) acrylamide and ethyl examples include one or a combination of two or more selected from monofunctional (meth) acrylamides such as (meth) acrylamide, normal propyl (meth) acrylamide, and isopropyl (meth) acrylamide.
  • MMA methyl methacrylate
  • MA methyl acrylate
  • EMA ethyl methacrylate
  • EA ethyl acrylate
  • (meth) acrylate means methacrylate or acrylate
  • (meth) acrylamide means methacrylamide or acrylamide.
  • the content of the structural unit (A) in all the structural units of the acrylic polymer of the present disclosure is 88% by mass or more, preferably 90% by mass or more, and 92% by mass, from the viewpoint of affinity with the electrolytic solution.
  • the above is more preferable, 94% by mass or more is further preferable, and 96% by mass or more is further preferable.
  • it is preferably 100% by mass or less, preferably 99.9% by mass or less, more preferably 99.5% by mass or less, still more preferably 99% by mass or less.
  • the content of the structural unit (A) can be determined by a known analytical method or an analyzer.
  • the content of the structural unit (A) means the total content thereof.
  • R 1 in the formula (I) is a hydrogen atom and R 2 has 1 or more and 3 or less carbon atoms from the viewpoint of affinity with the electrolytic solution.
  • a structural unit derived from a compound that is a linear or branched alkyl group hereinafter, also referred to as “constituent unit (A1)”), or R 1 in the formula (I) is a hydrogen atom or a methyl group, and R 2 It is preferable that the compound contains a structural unit derived from a compound which is an alkyl group having 1 to 2 carbon atoms (hereinafter, also referred to as “constituent unit (A2)”).
  • the content of the structural unit (A1) in all the structural units of the acrylic polymer of the present disclosure is 70% by mass from the viewpoint of affinity with the electrolytic solution.
  • the above is preferable, 85% by mass or more is more preferable, 90% by mass or more is further preferable, 94% by mass or more is further preferable, and 96% by mass or more is particularly preferable.
  • the structural unit (A) includes the structural unit (A2) the content of the structural unit (A2) in all the structural units of the acrylic polymer of the present disclosure is 70% by mass from the viewpoint of affinity with the electrolytic solution.
  • the above is preferable, 85% by mass or more is more preferable, 90% by mass or more is further preferable, 94% by mass or more is further preferable, and 96% by mass or more is particularly preferable.
  • the structural unit (B) is a compound represented by the following formula (II) (hereinafter, also referred to as “monomer (B1)”) and a compound represented by the following (III) (hereinafter, also referred to as “monomer (B2)”). ) And unsaturated dibasic acid (hereinafter, also referred to as “monomer (B3)”), which is a constituent unit derived from at least one compound (hereinafter, also referred to as monomer (B)). From the viewpoint of affinity for metal ions, the structural unit (B) is preferably a structural unit derived from the monomer (B1). The monomer (B) may be used alone or in combination of two or more.
  • R 1 is a hydrogen atom or a methyl group from the viewpoint of ease of synthesis.
  • M is a hydrogen atom or a cation from the viewpoint of affinity for a metal ion, and a cation is preferable.
  • the cation at least one of alkali metal ion and ammonium ion is preferable from the viewpoint of improving battery characteristics, and at least one selected from ammonium ion, lithium ion, sodium ion and potassium ion is more preferable, and lithium ion and sodium ion are more preferable. At least one is more preferred.
  • the monomer (B1) contains, for example, a monomer in which M is a hydrogen atom with an alkali (ammonia, sodium hydroxide, lithium hydroxide, potassium hydroxide, etc.). It may be summed, or it may be a polymer obtained by polymerizing a monomer in which M is a hydrogen atom and then neutralized with an alkali. Further, the polymer obtained by polymerizing a monomer in which M is a hydrogen atom may be a polymer in which a hydrogen atom is replaced by a metal ion contained in an electrolyte inside a power storage device.
  • an alkali ammonia, sodium hydroxide, lithium hydroxide, potassium hydroxide, etc.
  • the polymer is neutralized with an alkali after becoming a constituent unit of the polymer after polymerization.
  • the monomer (B1) may be partially neutralized or completely neutralized in one or more embodiments.
  • M in the formula (II) is preferably at least one selected from lithium ions and hydrogen atoms.
  • Examples of the monomer (B1) include acrylic acid (AA), methacrylic acid (MAA), and one or a combination of two or more selected from salts thereof.
  • Examples of the salt include at least one selected from ammonium salt, sodium salt, lithium salt and potassium salt.
  • R 1 represents a hydrogen atom or a methyl group
  • X represents -O- or -NH-.
  • R4 is-(CH 2 ) n OR 3 , -R 5 SO 3 M, -R 6 N (R 7 ) (R 8 ) and -R 6 N + (R 7 ) (R 8 ) (R 9 ).
  • -Indicates at least one selected from Y- .
  • n indicates the average number of added moles, which is 1 or more and 4 or less.
  • R 3 represents a hydrogen atom or a methyl group.
  • R 5 represents a linear or branched alkylene group having 1 or more and 3 or less carbon atoms.
  • M represents a hydrogen atom or a cation.
  • Examples of the cation include the same cations of M in the above-mentioned formula (II).
  • M in formula (II) and formula (III) are independent of each other.
  • R 6 represents a linear or branched alkylene group having 1 or more and 3 or less carbon atoms.
  • R 7 and R 8 are the same or different, and represent linear or branched alkyl groups having 1 or more and 3 or less carbon atoms.
  • R 9 represents a linear or branched alkyl group having 1 or more and 3 or less carbon atoms.
  • Y - indicates an anion. Examples of the anion include halide ions such as chloride ion, bromide ion and fluoride ion; sulfate ion; phosphate ion; and the like.
  • the monomer (B2) may be, for example, a monomer in which M is a hydrogen atom neutralized with an alkali, or M is a hydrogen atom. It may be a polymer obtained by polymerizing a certain monomer and then neutralized with an alkali. Further, the polymer obtained by polymerizing a monomer in which M is a hydrogen atom may be a polymer in which a hydrogen atom is replaced by a metal ion contained in an electrolyte inside a power storage device. From the viewpoint of polymerization reaction control and dispersion stability, it is preferable that the polymer is neutralized with an alkali after becoming a constituent unit of the polymer after polymerization.
  • the monomer (B2) may be partially neutralized or completely neutralized in one or more embodiments.
  • M in the formula (III) is preferably at least one selected from lithium ions and hydrogen atoms.
  • the monomer (B2) includes hydroxyl group-containing ester (meth) acrylates such as hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate; and dimethylaminoethyl (meth) acrylate and dimethylaminopropyl from the viewpoint of ease of synthesis.
  • At least one selected from nitrogen atom-containing ester (meth) acrylates such as (meth) acrylate and trimethylammonioethyl (meth) acrylate; is selected from hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate. At least one of them is preferable, and at least one of hydroxyethyl methacrylate and hydroxyethyl acrylate is more preferable.
  • the monomer (B3) is an unsaturated dibasic acid, and from the viewpoint of ease of synthesis, for example, at least one selected from unsaturated dibasic acids having 4 or more and 12 or less carbon atoms and salts thereof can be mentioned.
  • the number of carbon atoms is preferably 4 or more and 8 or less, and more preferably 4 or more and 6 or less.
  • Examples of the monomer (B3) include maleic acid, fumaric acid, citraconic acid, mesaconic acid, itaconic acid, 2-pentene diic acid, 3-hexene diic acid, and salts thereof from the viewpoint of ease of synthesis. At least one selected from maleic acid, fumaric acid, itaconic acid, and salts thereof is preferable, and at least one of maleic acid and its salts is more preferable.
  • the salt is at least one selected from ammonium salt, lithium salt, sodium salt and potassium salt from the viewpoint of affinity for metal ions and dispersion stability. Species are preferred, with at least one of the lithium and sodium salts being more preferred.
  • the salt of the unsaturated dibasic acid of the monomer (B3) may be an unsaturated dibasic acid neutralized with an alkali, or may be polymerized with the unsaturated dibasic acid and then neutralized with an alkali. The summed one may be used. Further, the polymer polymerized using the unsaturated dibasic acid may be a polymer in which hydrogen atoms are replaced by metal ions contained in the electrolyte inside the power storage device. From the viewpoint of polymerization reaction control and dispersion stability, it is preferable that the polymer is neutralized with an alkali after becoming a constituent unit of the polymer after polymerization.
  • the content of the structural unit (B) in all the structural units of the acrylic polymer of the present disclosure is from the viewpoint of affinity to metal ions and dispersion stability. Therefore, 0.01% by mass or more is preferable, 0.1% by mass or more is more preferable, 0.3% by mass or more is further preferable, 0.5% by mass or more is further preferable, and 1% by mass or more is further preferable. From the same viewpoint, 12% by mass or less is preferable, 10% by mass or less is more preferable, 8% by mass or less is further preferable, 6% by mass or less is further preferable, and 4% by mass or less is further preferable.
  • the content of the structural unit (B) can be determined by a known analytical method or an analyzer. When the structural unit (B) is composed of structural units derived from two or more kinds of monomers (B), the content of the structural unit (B) means the total content thereof.
  • the mass ratio (A / B) of the content of the structural unit (A) to the content of the structural unit (B) in the acrylic polymer of the present disclosure is From the viewpoint of affinity for metal ions and electrolytic solution, and dispersion stability, 5000 or less is preferable, 500 or less is more preferable, 200 or less is further preferable, and affinity for metal ion and electrolytic solution, and dispersion. From the viewpoint of stability, 8 or more is preferable, 15 or more is more preferable, 20 or more is further preferable, and 25 or more is further preferable.
  • the structural unit (C) is a structural unit derived from a crosslinkable monomer (hereinafter, also referred to as “monomer (C)”).
  • the monomer (C) is selected from a polyfunctional (meth) acrylate (hereinafter, also referred to as “monomer (C1)”) and an N-methylolamide group-containing monomer (hereinafter, also referred to as “monomer (C2)”). At least one is mentioned.
  • the monomer (C) may be used alone or in combination of two or more.
  • Examples of the monomer (C1) include compounds represented by the following formula (IV).
  • R 10 is preferably a hydrogen atom or a methyl group from the viewpoint of ease of synthesis.
  • X is preferably —O— or —NH— from the viewpoint of ease of synthesis and affinity for the electrolytic solution.
  • n is preferably an integer of 1 or more and 20 or less from the viewpoint of ease of synthesis and affinity for the electrolytic solution.
  • X in the formula (III) and the formula (IV) are independent of each other.
  • Specific examples of the compound represented by the above formula (IV) include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and decaethylene glycol di (meth) acrylate. , And at least one selected from pentadecaethylene glycol di (meth) acrylates.
  • Examples of the other monomer (C1) include 1,3-butylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, and glycerinji ( Meta) acrylate, allyl (meth) acrylate, trimethyl propantri (meth) acrylate, pentaerythritol tetra (meth) acrylate, diethylene glycol di (meth) phthalate, caprolactone-modified dipentaerythritol hexa (meth) acrylate, caprolactone-modified hydroxy
  • Examples thereof include at least one selected from pivalic acid ester neopentyl glycol di (meth) acrylate and polyester (meth) acrylate.
  • Examples of the monomer (C2) which is an N-methylolamide group-containing monomer include at least one selected from N-methylolacrylamide and N-methylolmethacrylamide.
  • the content of the constituent unit (C) of the acrylic polymer of the present disclosure is a constituent unit from the viewpoint of ease of synthesis and compatibility with an electrolytic solution.
  • the total number of moles of the constituent units other than (C) 0.001 mol% or more is preferable, 0.01 mol% or more is more preferable, 0.05 mol% or more is further preferable, and from the same viewpoint. 5 mol% or less is preferable, 3 mol% or less is more preferable, 1 mol% or less is further preferable, and 0.8 mol% or less is further preferable.
  • the structural unit (C) is composed of a structural unit derived from two or more kinds of monomers (C)
  • the content of the structural unit (C) means the total content thereof.
  • the acrylic polymer of the present disclosure may contain other structural units other than the structural unit (A), the structural unit (B) and the structural unit (C) as long as the effects of the present disclosure are not impaired.
  • a structural unit derived from a monomer hereinafter, also referred to as “monomer (D)”) copolymerizable with the monomers (A), (B) and (C) (hereinafter, “constituent unit (D)).
  • monomer (D) a structural unit derived from a monomer
  • consisttituent unit (D) consisttituent unit (D)
  • Examples of the monomer (D) include (meth) acrylonitrile, styrene, methylstyrene, an alkyl (meth) acrylate having a linear or branched alkyl group having 4 or more carbon atoms, an aromatic-containing (meth) acrylate, and an alkyl vinyl ether. , Alkyl vinyl ester, alkenyl group-containing monomer and the like.
  • the monomer (D) may be used alone or in combination of two or more.
  • the total content of the structural units (A) and (B) in all the structural units of the acrylic polymer of the present disclosure is 88% by mass or more, and 90% by mass, from the viewpoint of compatibility with metal ions and electrolytic solutions.
  • the above is preferable, 92% by mass or more is more preferable, 94% by mass or more is further preferable, 96% by mass or more is further preferable, and 98% by mass or more is particularly preferable.
  • the acrylic polymer of the present disclosure can be produced, for example, by polymerizing the monomer (A) and, if necessary, at least one of the monomers (B) to (D). That is, the present disclosure comprises, in one aspect, a polymerization step of polymerizing a monomer mixture containing the monomer (A) and optionally at least one of the monomers (B)-(D).
  • the polymerization method include known polymerization methods such as an emulsion polymerization method, a solution polymerization method, a suspension polymerization method, and a bulk polymerization method, and the emulsion polymerization method is preferable from the viewpoint of ease of producing a polymer.
  • the content (% by mass) of the structural unit (A) in all the structural units of the acrylic polymer can be regarded as the amount (% by mass) of the monomer (A) used with respect to the total amount of the monomers used for the polymerization. ..
  • the content (% by mass) of the structural unit (B) in all the structural units of the polymer particles can be regarded as the amount of the monomer (B) used (% by mass) with respect to the total amount of the monomers used for the polymerization.
  • the mass ratio (A / B) of the content of the structural unit (A) to the structural unit (B) is the mass ratio of the amount of the monomer (A) used to the amount of the monomer (B) in the total amount of the monomers used for the polymerization. You can see it.
  • the total content (% by mass) of the structural unit (A) and the structural unit (B) in all the structural units of the polymer particles is the total amount of the monomers (A) and the monomer (B) used with respect to the total amount of the monomers used for the polymerization ( It can be regarded as% by mass).
  • the content (mol%) of the structural unit (C) in the polymer particles is the total number of moles of the monomers other than the monomer (C) used for polymerization (for example, the polymer particles include the structural units (A) to (C). In this case, it can be regarded as the amount (mol%) of the monomer (C) used (with respect to the total number of moles of the monomers (A) and (B)).
  • the emulsification polymerization method examples include a known method using an emulsifier and a method in which an emulsifier is substantially not used, a so-called soap-free emulsification polymerization method, and the soap-free emulsification polymerization method is preferable from the viewpoint of battery performance.
  • the acrylic polymer of the present disclosure for example, a monomer mixture containing a monomer (A) and, if necessary, at least one monomer (B) to (D) is emulsion-polymerized, preferably soap-free emulsion polymerization.
  • Polymers include.
  • the amount of the emulsifier used in the emulsion polymerization is preferably 0.05% by mass or less, more preferably 0.02% by mass or less, and 0, based on the total amount of the monomers used in the emulsion polymerization from the viewpoint of suppressing the decrease in binding property. It is more preferably 0.01% by mass or less, and even more preferably 0% by mass.
  • the amount of emulsifier used for emulsion polymerization can be the amount of the surfactant used in the polymerization step.
  • the acrylic polymer of the present disclosure is obtained by emulsion polymerization of a monomer mixture containing the monomer (A), and the amount of emulsifier contained in the ion conductive layer of the present disclosure is higher than that of the acrylic polymer. , 0% by mass or more and 0.05% by mass or less, more preferably 0% by mass or more and 0.02% by mass or less, further preferably 0% by mass or more and 0.01% by mass or less, and substantially 0% by mass. preferable.
  • the present disclosure relates, in one aspect, to an acrylic polymer composition for forming the ionic conductive layer of the present disclosure (hereinafter, also referred to as "the acrylic polymer composition of the present disclosure").
  • the acrylic polymer composition of the present disclosure comprises, in one or more embodiments, the acrylic polymer of the present disclosure described above.
  • the form of the acrylic polymer contained in the acrylic polymer composition of the present disclosure is preferably particles.
  • the content of the acrylic polymer in the acrylic polymer composition of the present disclosure is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, from the viewpoint of polymer production and the performance of the power storage device. It is more preferably mass% or more, more preferably 70% by mass or less, still more preferably 60% by mass or less, still more preferably 50% by mass or less.
  • the acrylic polymer composition of the present disclosure comprises a polar medium in one or more embodiments.
  • the polar medium may be any liquid that can dissolve or disperse the acrylic polymer.
  • As the polar medium at least one organic solvent selected from methanol, ethanol, isopropanol, acetone, tetrahydrofuran and dioxane from the viewpoint of production of acrylic polymer and dispersion stability, an aqueous medium containing these organic solvents and water, Alternatively, water is preferred, aqueous media and water are more preferred, and water is even more preferred. Examples of water include ion-exchanged water.
  • the acrylic polymer composition of the present disclosure is contained so that the thickness of the ionic conductive layer is more than 1 ⁇ m and 500 ⁇ m or less in one or more embodiments.
  • a step (coating step) of applying a slurry (hereinafter, also referred to as "slurry for an ion conductive layer of the present disclosure") to the surface of a base material (for example, a separator, an electrode, a release film, etc.) and a step (coating step) of applying the applied slurry to dry ions.
  • the substrate to which the slurry for the ion conductive layer of the present disclosure is applied includes a porous film or an electrode active material layer containing an electrode active material and a binder.
  • the acrylic polymer contained in the slurry for the ion conductive layer of the present disclosure has a particle shape.
  • the average particle size of the particles of the acrylic polymer is preferably 0.1 ⁇ m or more, more preferably 0.2 ⁇ m or more, from the viewpoint of compatibility with the electrolytic solution and productivity, and from the viewpoint of productivity and stability of the slurry. Therefore, 1 ⁇ m or less is preferable, 0.8 ⁇ m or less is more preferable, 0.6 ⁇ m or less is further preferable, 0.5 ⁇ m or less is further preferable, and 0.4 ⁇ m or less is particularly preferable.
  • the average particle size is the volume average particle size (D50) measured by the laser diffraction scattering method, and is the cumulative volume in the cumulative volume distribution curve in which the total volume of the particle size distribution obtained on a volume basis is 100%. Means the particle size at the point where is 50%.
  • the volume average particle size (D50) can be measured by using a laser diffraction / scattering type particle size distribution measuring device, and specifically, can be measured by the method described in Examples.
  • the form of the acrylic polymer contained in the slurry for the ion conductive layer of the present disclosure may be a powder or a polymer particle dispersion in which polymer particles are dispersed in a medium.
  • the medium may be a medium used in emulsion polymerization, preferably a polar medium, more preferably an aqueous medium, and even more preferably water.
  • the content of the acrylic polymer in the slurry for the ion conductive layer of the present disclosure is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and further preferably 1% by mass or more from the viewpoint of manufacturing a power storage device. It is preferable, and it is preferably 70% by mass or less, more preferably 60% by mass or less, still more preferably 50% by mass or less.
  • a monomer mixture containing a monomer (A) and, if necessary, at least one of the monomers (B) to (D) is polymerized. It can include a polymerization step of allowing the polymer particles to be obtained.
  • the polymerization step of the method for producing a slurry of the present disclosure the polymerization method, the types of each component that can be used for the polymerization, and the amount thereof used can be the same as the polymerization step of the above-mentioned method for producing an acrylic polymer.
  • the coating method of the slurry for the ion conductive layer of the present disclosure is not particularly limited, and for example, a doctor blade method, a dip method, a reverse roll method, and a direct roll method. , Gravure method, slurry method, brush painting method and the like.
  • examples of the drying method include drying with warm air, hot air, low humidity air, vacuum drying, and drying by irradiation with (far) infrared rays or electron beams.
  • the drying time is usually 5 to 30 minutes, and the drying temperature is usually 40 to 180 ° C.
  • the ionic conductive layer of the present disclosure is formed of the acrylic polymer of the present disclosure in one or more embodiments.
  • the ionic conductive layer of the present disclosure has ionic conductivity by the action of permeating ions in one or more embodiments. Therefore, the ion conductive layer of the present disclosure exhibits ion permeability in, for example, the measurement method described later, and exhibits the effect of reducing the ion resistance of the power storage device.
  • the formation of the ionic conductive layer of the present disclosure is performed by producing a film containing an acrylic polymer in one or more embodiments.
  • the method for producing a film containing an acrylic polymer include the above-mentioned method for forming an ionic conductive layer of the present disclosure.
  • a method for producing a film containing an acrylic polymer for example, a method of applying or immersing a solution or dispersion (slurry) containing an acrylic polymer on a separator or an electrode as a base material and drying the solution.
  • a method of applying a solution or slurry containing an acrylic polymer on a release film as a base material, drying and forming a film, and transferring the obtained film to a predetermined place can be mentioned.
  • the solution or slurry containing the acrylic polymer in which the content of the structural unit (A) in all the structural units used in the ionic conduction layer of the present disclosure is 88% by mass or more has a high surface tension, so that the solution or slurry is used as a base material.
  • the liquid may repel and the uniformity of the thickness of the obtained film may be impaired.
  • the thickness of the ion conductive layer of the present disclosure can be set according to the purpose, and is preferably more than 1 ⁇ m, preferably 2 ⁇ m, from the viewpoint of ease of manufacturing of the power storage device, battery characteristics, and uniformity of thickness.
  • the above is more preferable, 3 ⁇ m or more is further preferable, 5 ⁇ m or more is further preferable, and from the same viewpoint, 500 ⁇ m or less is more preferable, 100 ⁇ m or less is more preferable, 70 ⁇ m or less is further preferable, and 50 ⁇ m or less is further preferable.
  • the ions conducted in the ion conduction layer of the present disclosure are preferably metal ions, more preferably alkali metal ions, and even more preferably lithium ions.
  • the ionic conduction layer of the present disclosure preferably holds an organic solvent in the power storage device.
  • the organic solvent is preferably a solvent that solubilizes ions, and more preferably an electrolytic solution.
  • cyclic carbonates ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC), and derivatives thereof
  • chain carbonates dimethyl carbonate (DMC), diethyl carbonate (DEC), ethyl methyl carbonate ( EMC), dipropyl carbonate (DPC), and their derivatives
  • aliphatic carboxylic acid esters methyl formate, methyl acetate, ethyl propionate, and their derivatives
  • ⁇ -lactones ⁇ -butyrolactone, and their derivatives.
  • the organic solvent may be used alone or in combination of two or more.
  • the amount of the organic solvent retained in the ion conductive layer in the power storage device is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, based on the ion conductive layer. 1% by mass or more is further preferable, 10% by mass or more is further preferable, and 50% by mass or more is particularly preferable. From the viewpoint of battery durability, 10,000% by mass or less is preferable, 5000% by mass or less is more preferable, 2000% by mass or less is further preferable, 1000% by mass or less is further preferable, and 500% by mass or less is particularly preferable.
  • the ionic conductive layer of the present disclosure may contain an arbitrary component in addition to the above acrylic polymer.
  • the optional component include an adhesive, a resin modifier, a metal salt, an inorganic oxide, a solid electrolyte and the like.
  • the metal salt is preferably an alkali metal salt used as a supporting electrolyte for the battery, and more preferably a lithium salt used in a lithium ion battery.
  • the lithium salt include LiPF 6 , LiAsF 6 , LiBF 4 , LiSbF 6 , LiAlCl 4 , LiClO 4 , CF 3 SO 3 Li, C 4 F 9 SO 3 Li, CF 3 COOLi, (CF 3 CO) 2 N Li. , (CF 3 SO 2 ) 2 NLi, (C 2 F 5 SO 2 ) 2 NLi and the like.
  • the inorganic oxide can be used for the purpose of imparting the safety and strength of the power storage device to the extent that the effect of the present disclosure is not impaired.
  • examples of the inorganic oxide include alumina (aluminum oxide), magnesia (magnesium oxide), calcium oxide, titania (titanium oxide), zirconia (zirconium oxide), talc, silicate and the like.
  • the ionic conductive layer of the present disclosure may be free of inorganic oxides in one or more embodiments.
  • an inorganic compound having ion conductivity for example, lithium ion conductivity
  • the type of the solid electrolyte is not particularly limited, and both the inorganic solid electrolyte and the organic solid electrolyte can be used, but the inorganic solid electrolyte is preferable from the viewpoint of flame retardancy.
  • the inorganic solid electrolyte a known material can be used, and examples thereof include a sulfide-based solid electrolyte and an oxide-based solid electrolyte.
  • the oxide-based solid electrolyte may also serve as the inorganic oxide described above.
  • the content of the acrylic polymer in the ionic conductive layer of the present disclosure is preferably 1% by mass or more, more preferably 3% by mass or more, further preferably 5% by mass or more, and 10% by mass or more. Is even more preferable, and 100% by mass or less is preferable.
  • the ionic conductive layer of the present disclosure can be used as a member for a power storage device such as an electrolyte, a separator, a surface protective layer of an electrode, a solid electrolyte mixed membrane, and a resin layer. That is, the present disclosure, in one aspect, contains the ion conductive layer of the present disclosure, and the thickness of the ion conductive layer is more than 1 ⁇ m and 500 ⁇ m or less. Also called).
  • the member for a power storage device of the present disclosure is, in one or more embodiments, from the electrolyte layer having the ion conductive layer of the present disclosure, the electrode having the ion conductive layer of the present disclosure, and the separator having the ion conductive layer of the present disclosure. At least one of the choices.
  • the separator having an ion conductive layer of the present disclosure forms the ion conductive layer of the present disclosure on one side or both sides of the separator in one or more embodiments. Can be obtained by doing.
  • the method for producing the separator with an ion conductive layer of the present disclosure can be, for example, the same as the above-described method for forming an ion conductive layer.
  • the separator is a film having porosity (porous film), and is a porous polyolefin film, a porous polyolefin terephthalate film, a porous polyimide film, a porous polyester film, a porous cellulose film, and a porous Teflon (registered trademark).
  • Examples include films, non-woven fabrics, and papers.
  • the electrode having the ion conducting layer of the present disclosure (hereinafter, also referred to as “the electrode with the ion conducting layer of the present disclosure”) is obtained by forming the ion conducting layer of the present disclosure on the surface of the electrode in one or more embodiments.
  • the electrodes are positive electrodes and negative electrodes in a power storage device, and usually, an electrode active material layer (electrode mixture layer) is formed on one side or both sides of a metal foil called a current collector.
  • An electrode (double-sided electrode) having an electrode active material layer formed on both sides may be a positive electrode on both sides or a negative electrode on both sides, one side being a positive electrode and the other side being a negative electrode (a negative electrode). It may be a bipolar electrode).
  • the electrode active material layer contains an electrode active material, a binder, and components such as a conductive material, if necessary, and the electrode having an ion conductive layer is an ion conductive layer of the present disclosure on the surface of the electrode active material layer. It is an electrode provided with. When both sides are positive electrodes or negative electrodes, the ion conductive layer of the present disclosure may be provided on at least one of both surfaces. In the case of a bipolar electrode, the ion conducting layer of the present disclosure may be provided on at least one of the negative electrode surface and the positive electrode surface.
  • the method for manufacturing the electrode with the ion conducting layer of the present disclosure for example, the same method as the above-described method for forming the ion conducting layer of the present disclosure can be used.
  • the present disclosure relates to a power storage device (hereinafter, also referred to as “the power storage device of the present disclosure") having the member for the power storage device of the present disclosure in one aspect.
  • the power storage device of the present disclosure is, in one or more embodiments, a power storage device having at least one positive electrode, at least one negative electrode, and optionally a bipolar electrode, the positive electrode, the negative electrode, and a buy. At least one selected from the polar electrodes may be a power storage device having the ion conductive layer of the present disclosure.
  • the power storage device of the present disclosure may be a bipolar battery in one or more embodiments.
  • a positive electrode having a positive electrode active material layer on at least one surface and a negative electrode having a negative electrode active material layer on at least one surface are provided on the outermost layer, and the positive electrode is provided.
  • the electrolytic solution can be retained in the ion conductive layer in the energy storage device of the present disclosure.
  • the electrolytic solution include at least one selected from cyclic and chain carbonates.
  • the thickness of the ion conductive layer in the power storage device of the present disclosure is more than 1 ⁇ m, preferably 2 ⁇ m or more, preferably 3 ⁇ m or more, from the viewpoint of the durability of the power storage device, the battery characteristics, and the uniformity of the thickness. More preferably, 5 ⁇ m or more is more preferable, and from the same viewpoint, 500 ⁇ m or less, 100 ⁇ m or less is preferable, 70 ⁇ m or less is more preferable, and 50 ⁇ m or less is further preferable.
  • the present disclosure further relates to one or more embodiments below.
  • An electrode having an ionic conduction layer contains an acrylic polymer and has The acrylic polymer contains a structural unit (A) derived from the compound represented by the formula (I).
  • the structural unit (A) is a structural unit (A1) derived from a compound in which R 1 in the formula (I) is a hydrogen atom and R 2 is a linear or branched alkyl group having 1 or more and 3 or less carbon atoms.
  • the content of the structural unit (A) in all the structural units of the acrylic polymer is 88% by mass or more and 100% by mass or less, and the content of the structural unit (A1) in all the structural units of the acrylic polymer.
  • the ionic conductive layer contains an acrylic polymer and has The acrylic polymer contains a structural unit (A) derived from the compound represented by the formula (I).
  • the structural unit (A) includes a structural unit (A2) derived from a compound in which R 1 in the formula (I) is a hydrogen atom or a methyl group and R 2 is an alkyl group having 1 to 2 carbon atoms.
  • the content of the structural unit (A) in all the structural units of the acrylic polymer is 88% by mass or more and 100% by mass or less, and the content of the structural unit (A2) in all the structural units of the acrylic polymer. However, it is 70% by mass or more in all the constituent units of the acrylic polymer.
  • the ionic conductive layer contains an acrylic polymer and has The acrylic polymer contains a structural unit (A) derived from the compound represented by the formula (I).
  • the content of the structural unit (A) in all the structural units of the acrylic polymer is 88% by mass or more and 100% by mass or less.
  • the electrolytic solution is at least one selected from cyclic and chain carbonates.
  • a member for a power storage device having a thickness of the ion conductive layer of more than 1 ⁇ m and 500 ⁇ m or less.
  • a power storage device having a positive electrode, a negative electrode, and at least one bipolar electrode arranged between the positive electrode and the negative electrode. At least one selected from the positive electrode, the negative electrode, and the bipolar electrode has an ion conductive layer.
  • the ionic conductive layer contains an acrylic polymer and has The acrylic polymer contains a structural unit (A) derived from the compound represented by the formula (I).
  • the content of the structural unit (A) in all the structural units of the acrylic polymer is 88% by mass or more and 100% by mass or less.
  • a power storage device having a thickness of the ion conductive layer of more than 1 ⁇ m and 500 ⁇ m or less.
  • the ion conductive layer and the acrylic polymer in these embodiments can be the ion conductive layer of the present disclosure and the acrylic polymer of the present disclosure, respectively.
  • a polymerization initiator solution in which 1 g of APS is dissolved in 10 g of ion-exchanged water is added to the flask, and the reaction solution in the flask is kept at around 70 to 75 ° C. After holding for 6 hours, the mixture was polymerized and aged to obtain an acrylic polymer dispersion. Then, the acrylic polymer dispersion in the flask was cooled to room temperature, neutralized by adding 29.14 g of a 1N LiOH aqueous solution, and then agglomerates were removed using a 200 mesh filter cloth to bring the concentration to 30% by mass.
  • Table 1 shows the amounts and types of each component used in the preparation of the acrylic polymer dispersion of Example 1. Further, Table 1 shows the stability (emulsion stability) of the polymer dispersion of Example 1 confirmed by the amount of the agglomerates, and the measurement results of the average particle size of the polymer particles of Example 1.
  • Acrylic polymer dispersions of Examples 2 to 11 were obtained in the same manner as in Example 1 except that the amount of the monomer species or the monomer components was changed so as to be the structural unit shown in Table 1.
  • Table 1 shows the amounts and types of each component used in the preparation of the acrylic polymer dispersions of Examples 2 to 11. Further, Table 1 shows the measurement results of the emulsion stability of Examples 2 to 11 and the average particle size of the polymer particles.
  • PVDF-HFP was used as the polymer of Comparative Example 6.
  • PVDF-HEP dissolved in 10% by mass with NMP was used as the polymer dispersion of Comparative Example 6.
  • the average particle size of the polymer particles is measured by diluting with a dispersion medium (water) at room temperature using a laser diffraction method particle size measuring device (LA-920 manufactured by HORIBA, Ltd.) until the specified light amount range of the device is reached. did. The results are shown in Table 1.
  • Tg glass transition temperature
  • the EC / DEC mixed solvent I was brought into contact with one surface of the polymer film, and the lithium-containing solvent II was brought into contact with the other surface, and the mixture was allowed to stand for 6 hours. Then, the amount (ppm) of Li in the EC / DEC mixed solvent I was confirmed by an inductively coupled plasma mass spectrometer ICP-MS. The results are shown in Table 1.
  • the polymer dispersion was applied onto the aluminum foil so that the thickness after drying was 20 ⁇ m, and dried at 40 ° C. for 8 hours. After punching to a diameter of 16 mm, the film was further dried under reduced pressure at 50 ° C. for another 8 hours to obtain a film for measuring ionic conductivity.
  • the film for measuring ionic conductivity was placed on a bipolar coin cell (Hosen Co., Ltd. "HS Flat Cell").
  • a LiPF 6 solution (solvent: EC / DEC mixed solvent (volume ratio 3/7)) having a concentration of 1 M was injected as a non-aqueous electrolytic solution, the cell was sealed, and a cell for measuring ionic conductivity was assembled.
  • the AC impedance (10 mV, frequency 0.05 Hz to 100 KHz) was measured using the impedance gain analyzer (FRA) “1260A” manufactured by Solartron Co., Ltd. for the cell for measuring ion conductivity obtained in the above step.
  • the resistance value was calculated from the arc width of the obtained conductor call plot, and the ionic conductivity (mS / cm) was calculated from the resistance value.
  • the results are shown in Table 1. It can be judged that the larger the ionic conductivity, the better the ionic conductive layer.
  • Negative electrode active material Graphite, Showa Denko, "AF-C” -Negative electrode conductive material: carbon fiber, Showa Denko, "VGCF-H” -Negative electrode binder: SBR -Negative electrode thickener: Sodium Carboxymethyl Cellulose (CMC), manufactured by Daicel, "# 2200"
  • a stirring defoaming machine (“Awatori Rentaro” manufactured by Shinky Co., Ltd.
  • the obtained negative electrode paste was dried on a copper foil as a current collector, adjusted in thickness to 80 g / m 2 , and coated with a bar coater.
  • the coating film was dried at 80 ° C. for 5 minutes using a blower dryer, and further dried at 150 ° C. for 10 minutes.
  • the electrode density was adjusted to 1.3 to 1.4 g / cm 3 by a roll press and left in a dry room for one night or more to prepare a negative electrode having a negative electrode mixture layer.
  • the slurry for the ion conductive layer is applied to the surface of the mixture layer of the negative electrode with an applicator so that the thickness after drying becomes 20 ⁇ m, dried at 60 ° C. for 10 minutes, and left in a dry room overnight or longer. Then, a negative electrode A having an ion conductive layer was obtained.
  • the preparation of the negative electrode A with an ion conductive layer using the polymer dispersion liquid of Example 12 the above-mentioned preparation using the polymer dispersion liquid of Example 1 except that the coating was applied so that the thickness after drying was 45 ⁇ m. It was done in the same way as the example.
  • the polymer dispersion was appropriately diluted with ion-exchanged water and then coated so that the thickness after drying was 5 ⁇ m.
  • the polymer dispersion liquid of Example 1 Regarding the production of the negative electrode A with an ion conductive layer using the polymer dispersion of Example 14, except that the polymer dispersion was appropriately diluted with ion-exchanged water and then coated so that the thickness after drying was 2 ⁇ m.
  • the polymer dispersion was appropriately diluted with ion-exchanged water and then coated so that the thickness after drying was 0.8 ⁇ m. Except for the above, the same procedure as in the above-mentioned production example using the polymer dispersion liquid of Example 1 was carried out.
  • the slurry for the ion conductive layer is applied to one side of the separator (porous polyethylene) with an applicator so that the thickness after drying becomes 20 ⁇ m, dried at 60 ° C. for 10 minutes, and further overnight in a dry room or more. It was left to stand to obtain a separator A having an ion conductive layer.
  • the separator A with an ion conductive layer using the polymer dispersion liquid of Example 12 the above-mentioned preparation using the polymer dispersion liquid of Example 1 except that the coating was applied so that the thickness after drying was 45 ⁇ m. It was done in the same way as the example.
  • the polymer dispersion liquid was appropriately diluted with ion-exchanged water and then coated so that the thickness after drying was 5 ⁇ m.
  • the polymer dispersion liquid of Example 14 except that the polymer dispersion was appropriately diluted with ion-exchanged water and then coated so that the thickness after drying was 2 ⁇ m.
  • the polymer dispersion was appropriately diluted with ion-exchanged water and then coated so that the thickness after drying was 0.8 ⁇ m. Except for the above, the same procedure as in the above-mentioned production example using the polymer dispersion liquid of Example 1 was carried out.
  • the polymer dispersion of Comparative Example 6 was mixed with an alumina filler so as to have a solid content mass ratio of 10/90, and then diluted with NMP so that the total solid content concentration was 40% by mass to obtain a slurry for an ion conductive layer.
  • the slurry for the ion conductive layer is applied to one side of the separator (porous polyethylene) with an applicator so that the thickness after drying becomes 20 ⁇ m, dried at 60 ° C. for 10 minutes, and further overnight in a dry room or more. It was left to stand to obtain a separator B having an ion conductive layer.
  • the following electrolytic solution was injected from the opening on the terminal side, the inside was evacuated, and the terminal side was also heat-sealed to seal the cell, thereby producing a lithium ion secondary battery.
  • a solution of LiPF 6 having a concentration of 1 M solvent: EC / DEC mixed solvent (volume ratio 3/7)) to which 1% by mass of vinylene carbonate (VC) was added was used.
  • VC vinylene carbonate
  • a lithium ion secondary battery evaluation cell having a negative electrode A with an ion conductive layer, in which the location of the ion conductive layer is only the surface of the negative electrode active material layer, was produced.
  • the negative electrode A with an ion conductive layer using the polymer dispersion of Comparative Example 6 could not be evaluated because the ion conductive layer was peeled off during punching.
  • the negative electrode with an ion conductive layer is the negative electrode
  • the separator is the separator A with the ion conductive layer
  • the surface of the separator A without the ion conductive layer is overlapped with the negative electrode mixture layer.
  • a lithium ion secondary battery evaluation cell having a separator A with an ion conductive layer was prepared in which the location of the ion conductive layer is only one side of the separator.
  • the separator A with an ionic conductive layer produced by using the polymer dispersion of Comparative Example 6 could not be evaluated because the ionic conductive layer was peeled off during punching.
  • the lithium ion secondary battery having the negative electrode A with the ion conductive layer prepared by using the polymer dispersions of Examples 1 to 12 was prepared by using the polymer dispersions of Comparative Examples 1 to 5. It was found that the decrease in the capacity retention rate was suppressed and the battery characteristics were improved as compared with the lithium ion secondary battery having the negative electrode A with the ion conductive layer. Further, the lithium ion secondary battery having the negative electrode A with the ion conductive layer produced by using the polymer dispersions of Examples 1 to 12 is superior in charge / discharge cycle characteristics as compared with Comparative Examples 1 to 5. all right.
  • the lithium ion secondary battery having the separator A with an ion conductive layer prepared by using the polymer dispersions of Examples 1 to 11 was prepared by using the polymer dispersions of Comparative Examples 1 to 5. It was found that the decrease in the capacity retention rate was suppressed and the battery characteristics were improved as compared with the lithium ion secondary battery having the separator A with the ion conductive layer.
  • the lithium ion secondary battery having the separator B with an ion conductive layer prepared by using the polymer dispersions of Examples 1 to 11 was prepared by using the polymer dispersions of Comparative Examples 1 to 5. It was found that the decrease in the capacity retention rate was suppressed and the battery characteristics were improved as compared with the lithium ion secondary battery having the separator B with the ion conductive layer.
  • Example of manufacturing a bipolar battery The bipolar battery shown in FIG. 1 was produced by the following method using the polymer dispersion of Example 1.
  • -Positive electrode active material NMC111 (manufactured by Nippon Chemical Industrial Co., Ltd.), composition: LiNi 1/3 Mn 1/3 Co 1/3 O 2 (D50: 6.5 ⁇ m, BET specific surface area: 0.7 m 2 / g)
  • -Positive electrode conductive material acetylene black (manufactured by Denki Kagaku Kogyo, product name: Denka Black HS-100)
  • -Positive binder polyvinylidene fluoride (PVDF) (manufactured by Kureha, L # 7208; 8% NMP solution)
  • a positive electrode paste 282 g of the positive electrode active material, 9 g of the positive electrode conductive material, and 9 g of the positive electrode binder were mixed using NMP as a non-aqueous solvent to prepare a positive electrode paste.
  • the mass ratio of the positive electrode active material, the positive electrode conductive material, and the positive electrode binder was set to 94: 3: 3 (solid content conversion).
  • kneading using a disper was performed.
  • the prepared positive electrode paste was dried on an aluminum foil as a current collector, adjusted in thickness to 125 g / m 2 , and coated with a bar coater.
  • the coating film was dried at 100 ° C. for 5 minutes using a blower dryer, and further dried at 150 ° C. for 10 minutes.
  • the electrode density was adjusted to 2.8 to 3.2 g / cm 3 by a roll press, and left in a dry room for one night or more to prepare a positive electrode having a positive electrode mixture layer.
  • a negative electrode was produced by the same method as the negative electrode of the lithium ion battery.
  • the negative electrode paste obtained by the same method as the negative electrode paste used for manufacturing the lithium ion battery is dried on one side of a stainless steel foil as a current collector, and the thickness is adjusted to 80 g / m 2 with a bar coater. Painted.
  • the coating film was dried at 80 ° C. for 5 minutes using a blower dryer, and further dried at 150 ° C. for 10 minutes.
  • the positive electrode paste was applied to the other surface of the foil with a bar coater after drying to adjust the thickness to 125 g / m 2 .
  • the coating film was dried at 100 ° C. for 5 minutes using a blower dryer to obtain a bipolar electrode.
  • An oxide-based solid electrolyte (manufactured by O'Hara, Li 2 O-Al 2 O 3 -SiO 2 -P 2 O 5 -TiO 2 , trade name LICGC powder) was added to the polymer dispersion of Example 1 in a solid content weight ratio of 10. After mixing to a ratio of / 90, the mixture was diluted with ethanol so that the total solid content concentration was 30% by mass and uniformly mixed to obtain a slurry for an ion conductive layer.
  • the slurry for the ion conductive layer is coated on the negative electrode of the negative electrode and the bipolar electrode so that the thickness after drying is 40 ⁇ m, dried at 60 ° C. for 10 minutes, and further in a dry room. After being left to stand for more than night, a negative electrode C having an ion conductive layer C and a bipolar electrode C were obtained.
  • the negative electrode C and the positive electrode were punched out to a size of 40 mm ⁇ 40 mm, leaving the terminal mounting portion, and the terminals were mounted respectively.
  • Two bipolar type electrodes C were punched out to a size of 40 mm ⁇ 40 mm, and the outermost layer was used as a negative electrode C and a positive electrode. ..
  • the laminated electrode is immersed in the electrolytic solution for 8 hours to sufficiently impregnate the electrode and the ionic conductive layer, and the surface of the taken-out laminated electrode is wiped off.
  • LiPF 6 having a concentration of 1 M (solvent: EC / DEC mixed solvent (volume ratio 3/7)) to which 1% by mass of vinylene carbonate (VC) was added was used.
  • the ion conductive layer of the present disclosure having excellent battery characteristics is useful in lithium ion batteries, lithium ion capacitors, and other power storage devices.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne une couche conductrice d'ions pour des dispositifs de stockage d'électricité, ladite couche conductrice d'ions permettant d'améliorer les caractéristiques de batterie de dispositifs de stockage d'électricité.　Selon un mode de réalisation, la présente invention concerne une couche conductrice d'ions pour des dispositifs de stockage d'électricité, ladite couche conductrice d'ions étant disposée entre l'électrode positive et l'électrode négative d'un dispositif de stockage d'électricité. Cette couche conductrice d'ions pour des dispositifs de stockage d'électricité contient un polymère acrylique ; le polymère acrylique contient une unité constitutive (A) qui est dérivée d'un composé représenté par la formule (I) ; la teneur de l'unité constitutive (A) dans toutes les unités constitutives du polymère acrylique est de 88 % en masse à 100 % en masse ; et l'épaisseur de cette couche conductrice d'ions est supérieure à 1 μm, mais inférieure ou égale à 500 μm.
PCT/JP2021/031520 2020-08-28 2021-08-27 Couche conductrice d'ions pour des dispositifs de stockage d'électricité WO2022045295A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022545733A JPWO2022045295A1 (fr) 2020-08-28 2021-08-27

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-144887 2020-08-28
JP2020144887 2020-08-28

Publications (1)

Publication Number Publication Date
WO2022045295A1 true WO2022045295A1 (fr) 2022-03-03

Family

ID=80355383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/031520 WO2022045295A1 (fr) 2020-08-28 2021-08-27 Couche conductrice d'ions pour des dispositifs de stockage d'électricité

Country Status (2)

Country Link
JP (1) JPWO2022045295A1 (fr)
WO (1) WO2022045295A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141962A1 (fr) * 2013-03-11 2014-09-18 株式会社村田製作所 Batterie à électrolyte complètement solide
JP2014173016A (ja) * 2013-03-11 2014-09-22 Takemoto Oil & Fat Co Ltd 有機シリコーン微粒子、有機シリコーン微粒子の製造方法、改質ポリオレフィン微多孔膜、改質ポリオレフィン微多孔膜の製造方法及び非水電解質電池用セパレータ
WO2015064411A1 (fr) * 2013-10-31 2015-05-07 日本ゼオン株式会社 Polymère particulaire prévu pour une utilisation dans un liant pour batterie secondaire au lithium-ion ; couche adhésive ; et composition de membrane poreuse
WO2016098684A1 (fr) * 2014-12-15 2016-06-23 帝人株式会社 Séparateur pour pile à électrolyte non aqueux, pile à électrolyte non aqueux, et procédé de fabrication de pile à électrolyte non aqueux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141962A1 (fr) * 2013-03-11 2014-09-18 株式会社村田製作所 Batterie à électrolyte complètement solide
JP2014173016A (ja) * 2013-03-11 2014-09-22 Takemoto Oil & Fat Co Ltd 有機シリコーン微粒子、有機シリコーン微粒子の製造方法、改質ポリオレフィン微多孔膜、改質ポリオレフィン微多孔膜の製造方法及び非水電解質電池用セパレータ
WO2015064411A1 (fr) * 2013-10-31 2015-05-07 日本ゼオン株式会社 Polymère particulaire prévu pour une utilisation dans un liant pour batterie secondaire au lithium-ion ; couche adhésive ; et composition de membrane poreuse
WO2016098684A1 (fr) * 2014-12-15 2016-06-23 帝人株式会社 Séparateur pour pile à électrolyte non aqueux, pile à électrolyte non aqueux, et procédé de fabrication de pile à électrolyte non aqueux

Also Published As

Publication number Publication date
JPWO2022045295A1 (fr) 2022-03-03

Similar Documents

Publication Publication Date Title
KR102303725B1 (ko) 열가교형 리튬이온 전지용 슬러리 및 그 제조방법, 리튬이온 전지용 전극, 리튬이온 전지용 세퍼레이터, 리튬이온 전지용 세퍼레이터/전극적층체, 및 리튬이온 전지
CN109565016B (zh) 非水系二次电池多孔膜用组合物、非水系二次电池用多孔膜及非水系二次电池
KR101819067B1 (ko) 이차 전지용 정극 및 그 제조 방법, 슬러리 조성물, 그리고 이차 전지
WO2017094252A1 (fr) Composition pour couche adhésive de pile rechargeable à électrolyte non aqueux, couche adhésive pour pile rechargeable à électrolyte non aqueux, corps stratifié, et pile rechargeable à électrolyte non aqueux
CN108780892B (zh) 非水系二次电池电极用粘结剂组合物、非水系二次电池电极用浆料组合物、非水系二次电池用电极及非水系二次电池
CN109565017B (zh) 非水系二次电池功能层用组合物、非水系二次电池用功能层及非水系二次电池
JPWO2009107778A1 (ja) 非水電解質二次電池電極用バインダー組成物および非水電解質二次電池
JP7259746B2 (ja) 電気化学素子機能層用バインダー組成物、電気化学素子機能層用組成物、電気化学素子用機能層、及び電気化学素子
TWI746608B (zh) 蓄電裝置電極用樹脂組合物
KR20180041683A (ko) 비수계 이차 전지 기능층용 조성물, 비수계 이차 전지용 기능층, 및 비수계 이차 전지
KR102335861B1 (ko) 비수계 2차 전지 기능층용 바인더 조성물, 비수계 2차 전지 기능층용 조성물, 비수계 2차 전지용 기능층, 비수계 2차 전지용 전지부재 및 비수계 2차 전지
CN107534152B (zh) 非水系电池电极用粘合剂用组合物、非水系电池电极用粘合剂、非水系电池电极用组合物、非水系电池电极以及非水系电池
WO2018155713A1 (fr) Résine pour électrode de dispositif à énergie, composition de formation d'électrode de dispositif à énergie, électrode de dispositif à énergie, et dispositif à énergie
WO2019004459A1 (fr) Composition de liant pour élément électrochimique, composition de bouillie pour couche fonctionnelle d'élément électrochimique, composition de bouillie pour couche adhésive d'élément électrochimique, et film composite
WO2022045295A1 (fr) Couche conductrice d'ions pour des dispositifs de stockage d'électricité
WO2019044720A1 (fr) Composition pour couche fonctionnelle d'élément électrochimique, couche fonctionnelle pour élément électrochimique et élément électrochimique
WO2021246364A1 (fr) Liant pour électrode de batterie rechargeable non aqueuse et suspension d'électrode de batterie rechargeable non aqueuse
CN113892202A (zh) 非水系二次电池耐热层用粘结剂组合物、非水系二次电池耐热层用浆料组合物、非水系二次电池用耐热层以及非水系二次电池
JP2022163577A (ja) 蓄電デバイス用イオン伝導層
WO2019004460A1 (fr) Composition de liant pour élément électrochimique, composition de bouillie pour couche fonctionnelle d'élément électrochimique, composition de bouillie pour couche adhésive d'élément électrochimique, et film composite
CN113728504B (zh) 聚合物粘结剂、叠层多孔膜、电池及电子装置
CN118140332A (zh) 二次电池电极用粘合剂及其用途、以及二次电池电极用粘合剂的制造方法
WO2022172843A1 (fr) Composition de liant pour électrode négative, électrode négative et batterie rechargeable
WO2024135749A1 (fr) Composition pour couche fonctionnelle d'élément électrochimique, composant pour élément électrochimique, procédé de fabrication de stratifié pour élément électrochimique, et élément électrochimique
WO2018087897A1 (fr) Résine pour électrodes de dispositif d'énergie, composition pour la formation d'une électrode de dispositif d'énergie, électrode pour dispositif d'énergie, et dispositif d'énergie

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21861716

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022545733

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21861716

Country of ref document: EP

Kind code of ref document: A1