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周的小木

铁虫 (小有名气)

[求助] 26650电芯正极端钢壳底部发黑

将自放电过大的26650电芯拆解,发现正极端钢壳底部发黑,置于空气中,黑色表面出现气泡。将黑色物质置于稀盐酸中消失,这个黑色物质是什么?什么是电解液的碳化?电解液碳化后会生成什么物质呢?谢谢!
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成长路上的鱼

新虫 (正式写手)

你做的是铁锂的吧?   目前考虑水分的影响。电芯拆开时应该会有刺激性气味吧,那么,首先考虑是PF5. 如果具体看黑色物质是什么,得做成分分析了。
2楼2017-05-06 14:47:39
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