| 摘要 |
The present invention relates to a lithium secondary battery characterized in that, in an XPS analysis (S2p) of sulfur on the surface of a positive electrode, a peak exists in the range of 167 to 171 eV and another peak exists in the range of 162 to 166 eV, and the ratio (P169/P164) between the intensity (P169) of the peak in the range of 167 to 171 eV and the intensity (P164) of the peak in the range of 162 to 166 eV is in the range of 0.7 to 2Ø The present invention can provide a lithium secondary battery excellent in cycle characteristics. |
