| 摘要 |
<p>PROBLEM TO BE SOLVED: To restore charging and discharging efficiency with a simple method without decomposing or stripping down a lithium ion battery of which charging and discharging efficiency has been deteriorated. SOLUTION: A lithium ion battery 3 of which charging and discharging efficiency has been deteriorated is placed in a high a.c. electric field and the charging and discharging efficiency is restored by releasing lithium ions which have turned out not to contribute to charging and discharging because they were trapped by carbon or the like of a negative electrode in the lithium ion battery.</p> |
