Patent ID: 11870031
Assignee: FUJIFILM CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 13:
14. An all-solid state secondary battery comprising:
a positive electrode active material layer;
a solid electrolyte layer; and
a negative electrode active material layer in this order,
wherein at least one of the positive electrode active material layer, the solid electrolyte layer, and the negative electrode active material layer is a layer including an inorganic solid electrolyte having conductivity for ions of metal elements belonging to Group I or II of the periodic table and binder particles which include a polymer having an SP value of 11 cal1/2 cm−3/2 or more and have an average particle diameter of 10 nm or more and 50,000 nm or less,
wherein the mass-average molecular weight of the polymer forming the binder particles is 5,000 or more, and
the polymer is an acrylic resin and said acrylic resin includes a repeating unit of at least one of monomers represented by the following Formulae (a-1) to (a-3) and (a-7),, wherein the acrylic resin including a repeating unit of a monomer represented by the Formula (a-1) has the repeating unit of a monomer represented by the Formula (a-1) in its main chain and a repeating unit of a macromonomer having a mass-average molecular weight of 1,000 or more and 500,000 or less as the side chain component, said macromonomer containing a repeating unit of a (meth)acrylic acid ester monomer,
in the Formula (a-1), R11 represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, or an aryl group, X represents O or >NH, L11 represents a single bond or an unsubstituted alkylene group having 1 to 3 carbon atoms, and R12 represents a hydrogen atom, an unsubstituted alkyl group having 1 to 6 carbon atoms, or a hydroxyl group (—OH),
in the Formulae (a-2), (a-3) and (a-7), L11 represents a single bond or a linking group that is selected from a group consisting of a hydrocarbon linking group selected from a group consisting of an alkylene group having 1 to 10 carbon atoms, an alkenylene group having 2 to 10 carbon atoms, an alkynylene groups having 2 to 10 carbon atoms, an arylene groups having 6 to 22 carbon atoms, and a combination thereof; a hetero linking group selected from a group consisting of a carbonyl group (—CO—), a thiolcarbonyl group (—CS—), a thioether group (—S—), an imino group (—NRN—), an ammonium linking group (—NRN2+—), a polysulfide group having 1 to 8 sulfur atoms, an imine linking group (RN—N═C<, —N═C(RN)—), a sulfonyl group (—SO2—), a sulfinyl group (—SO—), a phosphoric acid linking group (—O—P(OH)(O)—O—), a phosphonic acid linking group (—P(OH)(O)—O—), and a combination thereof, wherein RN has the same meaning as R12; and a linking group made of a combination thereof, X represents —O— or >NH, R11 represents a hydrogen atom, a hydroxy group, a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, or an aryl group, R12 represents a hydrogen atom or a substituent, R13 represents a hydrogen atom, an alkyl group, a hydroxy group-containing group, or a carboxy group-containing group and R13 may be the linking group of L11 and constitute a dimer at this portion, and R15 and R16 each independently represent a substituent.