2022-06-25
锂电(dian)池正极(ji)(ji)(负极(ji)(ji))浆(jiang)料(liao)制备(bei)时,正极(ji)(ji)(负极(ji)(ji))活性物质、导(dao)电(dian)剂(ji)(ji)、粘(zhan)结剂(ji)(ji)等是(shi)正极(ji)(ji)(负极(ji)(ji))物质混合(he)搅拌(ban)的过程,对(dui)电(dian)池材(cai)料(liao)和辅助材(cai)料(liao)混合(he),活性物质在溶剂(ji)(ji)中高度分(fen)散(san)形成牛(niu)顿型高粘(zhan)度流(liu)体(ti),使(shi)活性物质、导(dao)电(dian)剂(ji)(ji)、粘(zhan)结剂(ji)(ji)等助剂(ji)(ji)混合(he)充分(fen),分(fen)散(san)均匀的目(mu)的。
锂电池原料混合的注意(yi)事项:
1、原(yuan)料要符合工(gong)艺(yi)要求,如(ru)原(yuan)料种(zhong)类、各(ge)组分的用量;
2、正极(ji)不能存(cun)在水分;
3、注意设备干(gan)燥,控制室(shi)内(nei)湿度;
4、PVDF溶(rong)解(jie)(jie)(jie)过程(cheng)比较慢,PVDF在制(zhi)浆前(qian)要溶(rong)解(jie)(jie)(jie)在NMP中,CMC是难解(jie)(jie)(jie)溶(rong)液(ye),CMC在制(zhi)浆前(qian)要溶(rong)解(jie)(jie)(jie)在水中;
5、加入导电剂和活性物(wu)质后,料浆应均匀,无团聚颗(ke)粒,去除料浆中的气(qi)泡,正粘度:4000-10000mpa.s,负粘度:1500mpa.s,浆料粘度和固含量对涂装工艺非常重要(yao)。
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