| abstract |
A solid electrolyte material for an all solid-state lithium secondary battery represented by Li 2 S-M I a S b -M II x O y , wherein M I is selected from P, Si, Ge, B and Al; “a” and “b” respectively represent numbers that give a stoichiometric ratio in accordance with the kind of M I ; M II is selected from Fe, Zn and Bi; and “x” and “y” respectively represent numbers that give a stoichiometric ratio in accordance with the kind of M II . |