Patent ID: 8852816

Claim:
An all-solid secondary battery, comprising a positive electrode layer and a negative electrode layer wherein the positive electrode layer is disposed on one side of a solid electrolyte layer, the negative electrode layer is disposed on the other side of the solid electrolyte layer, wherein at least one of the positive electrode layer, the negative electrode layer, and the solid electrolyte layer comprises a first inorganic solid electrolyte and a second inorganic solid electrolyte, the first inorganic solid electrolyte is amorphous and the content of transition metal is less than 15% by mass on oxide basis, and said first inorganic solid electrolyte comprises the following components in terms of mass percent on oxide basis: R 2 O 12-45% SiO 2 0-75% P 2 O 5 0-83% AO 2 0-10% M 2 O 3 0-20%; and the second inorganic solid electrolyte comprises the following components in terms of mass percent on oxide basis: R 2 O 3-20% AO 2 15-34% and ZrO 2 15% or more, SiO 2 0-10%, P 2 O 5 0-60%, M 2 O 3 0-60% in which, R is at least one selected from Li and Na; A is at least one selected from Zr, Ti, and Ge; and M is at least one selected from B, Al, Bi, La, Y, and Sc, and wherein said components of the second inorganic solid electrolyte has a NASICON-type, β-Fe 2 (SO 4 ) 3 -type, garnet-type, or perovskite-type crystal structure.