NEGATIVE ELECTRODE ACTIVE MATERIAL FOR POWER STORAGE DEVICE, NEGATIVE ELECTRODE MATERIAL FOR POWER STORAGE DEVICE, AND POWER STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode active material for a power storage device, a negative electrode material for a power storage device, and a power storage device which have high discharge capacity and favorable cycle characteristics.SOLUTION: A negative electrode active material for a power storage device of the present invention contains at least one kind selected from the group consisting of SiO, BOand PO, and at least one kind selected from the group consisting of Bi and BiO.