SOLID ELECTROLYTE, SOLID ELECTROLYTE SHEET, AND METHOD FOR PRODUCING SOLID ELECTROLYTE

摘要

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.