Institute for Materials Research Tohoku University Katahira 2-1-1 Aoba-ku Sendai 980-8577 Japan;
WPI-Advanced Institute for Materials Research(WPI-AIMR) Tohoku University Katahira 2-1-1 Aoba-ku Sendai 980-8577 Japan;
Mitsubishi Gas Chemicals Co. Inc. 182 Tayuhama Shinwari Kita-ku Niigata 950-3112 Japan;
Closo-type complex hydride; Solid electrolyte; Lithium ion conductivity; Multiple complex anions;