2022-05-26
铝壳电池中出现(xian)黄色(se)东西是何物？
1、铝壳(qiao)电池石墨阳极是(shi)黄色的。
LiC6呈(cheng)金(jin)(jin)黄色(se)。当(dang)铝壳电池CB值设(she)计(ji)合理时(shi)，在充(chong)满(man)电状(zhuang)态下阳极(ji)石墨(mo)呈(cheng)金(jin)(jin)黄色(se)。如果(guo)导电剂的含量(liang)过多，金(jin)(jin)黄色(se)就不(bu)明显。如果(guo)CB设(she)计(ji)太低，金(jin)(jin)黄色(se)会出现(xian)白色(se)。厂家一般通过金(jin)(jin)黄色(se)来判断电池设(she)计(ji)是否合理。
2、铝壳电池的隔膜为黄色
铝壳电(dian)(dian)池(chi)(chi)(chi)的隔膜(mo)一(yi)(yi)般(ban)(ban)为(wei)暗黄色，一(yi)(yi)般(ban)(ban)在正(zheng)极(ji)那一(yi)(yi)面。正(zheng)极(ji)电(dian)(dian)压(ya)过高，氧化性强，隔膜(mo)被氧化；过充(chong)(chong)的电(dian)(dian)池(chi)(chi)(chi)将其拆开，其正(zheng)极(ji)一(yi)(yi)面为(wei)黄色；如(ru)果电(dian)(dian)解(jie)液中含有(you)过充(chong)(chong)添加剂，增(zeng)加充(chong)(chong)电(dian)(dian)电(dian)(dian)压(ya)，或电(dian)(dian)解(jie)液水分含量超标，正(zheng)极(ji)一(yi)(yi)面为(wei)黄色。隔膜(mo)是否变黄对于铝壳电(dian)(dian)池(chi)(chi)(chi)来说是一(yi)(yi)个重(zhong)要依据，其可表明电(dian)(dian)池(chi)(chi)(chi)是否有(you)过充(chong)(chong)或高电(dian)(dian)压(ya)循环。
3、铝壳(qiao)电池电解液为(wei)黄色
电解液储(chu)存(cun)时(shi)间过长，颜色(se)(se)会(hui)慢(man)慢(man)变黄，由浅黄变为(wei)黄色(se)(se)再变为(wei)红(hong)棕(zong)色(se)(se)；主要(yao)是电解液中(zhong)添(tian)加剂的(de)(de)分(fen)解造成(cheng)(cheng)的(de)(de)；电解液中(zhong)含(han)有VC成(cheng)(cheng)分(fen)，该成(cheng)(cheng)分(fen)非(fei)常不稳(wen)定(ding)，需要(yao)加入稳(wen)定(ding)剂，储(chu)存(cun)时(shi)间过长，遇水(shui)、遇高温、遇酸都会(hui)造成(cheng)(cheng)稳(wen)定(ding)剂失效，VC分(fen)解而发黄。
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