| 摘要 |
PROBLEM TO BE SOLVED: To provide polymer electrolyte lithium ion cell that removes a possibility of short-circuiting when mother cell being integrated with a positive electrode, separator, and a negative electrode is cut, and has a good electric property and manufacturing efficiency, in the electrolyte lithium ion cell using carbon as the negative electrode. SOLUTION: Electrode group of positive electrode, separator, and negative electrode has cutting face free from step and thickness of polymer electrolyte separator is 10-50μm, compression fracture strength is 1-10 kg/cm2. |
