Toyota Jidosha Kabushiki Kaisha

Keisuke Morita

Chihiro Yada

Yushi Suzuki

A method for producing an all solid state battery using a precipitation-dissolution reaction of metallic Li as a reaction of an anode, includes a preparation step, a liquid composition preparation step, a coating layer formation step, and a separator formation step. The preparation step includes preparing a sulfide solid electrolyte represented by LiPSX(X is at least one of Cl, Br, and I, and a satisfies 0≤a≤2), the liquid composition preparation step includes dissolving the sulfide solid electrolyte in an alcohol-based solvent to prepare a liquid composition, the coating layer formation step includes applying the liquid composition to an anode current collector to form a coating layer, the separator formation step includes forming a separator by volatilizing the alcohol-based solvent from the coating layer by drying, and the ratio of the sulfide solid electrolyte contained in the liquid composition is 10% by weight to 30% by weight.

Method for producing all solid state battery

A method for producing an all solid state battery using a precipitation-dissolution reaction of metallic Li as a reaction of an anode, includes a preparation step, a liquid composition preparation step, a coating layer formation step, and a separator formation step. The preparation step includes preparing a sulfide solid electrolyte represented by LiPSX(X is at least one of Cl, Br, and I, and a satisfies 0&#x2264;a&#x2264;2), the liquid composition preparation step includes dissolving the sulfide solid electrolyte in an alcohol-based solvent to prepare a liquid composition, the coating layer formation step includes applying the liquid composition to an anode current collector to form a coating layer, the separator formation step includes forming a separator by volatilizing the alcohol-based solvent from the coating layer by drying, and the ratio of the sulfide solid electrolyte contained in the liquid composition is 10% by weight to 30% by weight.

A method produces a laminate-type battery which can suppress short-circuiting even when a positioning guide is used. The method for producing a laminate-type battery having a first current collector layer, a first active material layer, a solid electrolyte layer or a separator layer, a second active material layer, and a second current collector layer laminated in this order, the method includes arranging a first layer along a first contact surface of a positioning guide, rotating the positioning guide, and thereafter arranging a second layer on the arranged first layer along a second contact surface of the positioning guide. The first layer and the second layer are different from each other and include an arbitrary layer selected from the first current collector layer, the first active material layer, the solid electrolyte layer or the separator layer, the second active material layer, and the second current collector layer.

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Susono, Japan

Keisuke Morita