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7j523

木虫 (小有名气)

[求助] 化成和1C放电容量相差很大是什么原因? 已有1人参与

全电池,化成电流差不多0.14C,改用1C后,放电容量只有0.14C的95%,衰减好多,懂得米我。。。
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123仙道123

木虫 (小有名气)

【答案】应助回帖

感谢参与,应助指数 +1
不明白楼主说的换成1C是化成的0.14C换成1C,还是1C放电。,对于化成采用小电流是为了SEI膜的形成,当然你换成1C后,SEI膜的形成是很难的,化成形成SEI膜是会消耗正极材料的锂容量(也就是电池的容量),然后1C放电容量自然会小于充电容量,如果1C化成,较难的形成SEI膜,容量发挥量就减少了。。
2楼2015-09-03 13:44:37
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