SOLID ELECTROLYTE BATTERY AND POSITIVE ELECTRODE ACTIVE MATERIAL

摘要

Provided are: a solid electrolyte battery which uses a novel positive electrode active material that functions in an amorphous state; and a novel positive electrode active material that functions in an amorphous state. This solid electrolyte battery is provided with: a positive electrode-side layer having a positive electrode active material layer; a negative electrode-side layer; and a solid electrolyte layer that is formed between the positive electrode-side layer and the negative electrode-side layer. The positive electrode active material layer contains a lithium borate compound in an amorphous state, said lithium borate compound containing Li, B, O, and an element M1 that is selected from among Cu, Ni, Co, Mn, Au, Ag and Pd.