| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery which is improved in discharge capacity. SOLUTION: In the nonaqueous electrolyte secondary battery provided with the negative pole 6 containing negative pole active material which electrochemically dopes/dedopes alkali metal, the positive pole 4 and nonaqueous electrolyte, the negative pole active material includes compound indicated by composition formula AxByC1-y (A is metal element. Atom ratio x and y indicate 0.2<=x<=1, 0.2<=y<=0.5, respectively). |
