| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact nonaqueous electrolyte secondary battery having large charge/discharge capacity characteristics and excellent cycle characteristics.SOLUTION: In the compact nonaqueous electrolyte secondary battery consisting of a negative electrode, a positive electrode and a lithium ion conductive nonaqueous electrolyte, the negative electrode active material of the negative electrode is SiOx(0<x<2) having a carbon coat on the surface, particle size distribution D10 of the negative electrode active material is 1 μm or more and D90 is 5 μm or less, and the thickness of the carbon coat is 10-1100 nm. |
