PURPOSE: To obtain a solid electrolyte mold body having the excellent ion conductivity by kneading the lithium ion conductive sulfide solid electrolyte and the polymeric elastic body with the dry kneading for molding.
CONSTITUTION: Lithium ion conductive solid electrolyte, which is synthesized from plural compounds including at least lithium sulfide, and the polymeric elastic body are compounded for molding by the dry kneading. Lowering of the ion conductivity due to the reaction of the polymeric elastic body and the sulfide solid electrolyte is thereby eliminated to obtain the solid electrolytic mold body which shows a high ion conductivity. The solid electrolyte mold body is desirably filled in an opening part of a non-conductive net-like body. Fluororesin is desirably used for the polymeric elastic body.
AOTANI NOBORU
KONDO SHIGEO
