Solid electrolyte, solid electrolyte sheet, and method for producing solid electrolyte
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHiroshi Suyama, Koji Kawamoto
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Abstract
The main object of the present invention is to provide a solid electrolyte with intergranular resistance decreased. The present invention solves the above-mentioned problem by providing a solid electrolyte comprising a garnet-type compound with Li ion conductivity as the main component, characterized in that a phosphate group-containing Li ion conductor is provided between particles of the above-mentioned garnet-type compound, and the phosphate group-containing Li ion conductor has a smaller particle diameter than a particle diameter of the above-mentioned garnet-type compound and makes face contact with the above-mentioned garnet-type compound.
Claims7
A solid electrolyte comprising a garnet-type compound with Li ion conductivity as a main component;
- wherein a phosphate group-containing Li ion conductor is provided between particles of the garnet-type compound, and
- the phosphate group-containing Li ion conductor has a smaller particle diameter than a particle diameter of the garnet-type compound and makes face contact with the garnet-type compound.
A method for producing a solid electrolyte having a garnet-type compound with Li ion conductivity as a main component, comprising the steps of:
- mixing the garnet-type compound and a phosphate group-containing Li ion conductor having a smaller particle diameter than a particle diameter of the garnet-type compound to obtain a raw material composition;
- and
- pressing the raw material composition and plastically deforming the phosphate group-containing Li ion conductor to provide the phosphate group-containing Li ion conductor, making face contact with the garnet-type compound, between particles of the garnet-type compound.
Dependencies are inferred from the claim text.