边锋游戏

270mAh/g!新反应机理照亮锂电高容量正极材料之路!
发布时间:2019-03-20 09:49:33
关键词:动力电池 锂电池

270mAh/g!新反应机理照亮锂电高容量正极材料之路!


在国家补贴政策的引导下,能量密度更高的三元材料体系已经在乘用车领域全面取代了磷酸铁锂电池,并且随着的近年来动力电池能量密度的持续提升,三元材料也逐渐从NCM111过渡到NCM532和NCM622体系,并且正在加速向NCM811体系过渡,我们知道对于三元材料而言Ni含量与其可逆容量之间存在密切的关系,Ni含量越高则材料的可逆容量也就越高,例如目前已经有学者测试了Ni含量高达0.9的NCM材料,其可逆容量达到220mAh/g以上,但是Ni含量越高三元材料的稳定性越差,循环寿命也就越差,因此三元材料通过提高Ni含量的方法提高可逆容量的道路也已经走到了尽头。


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稿件来源: 新能源Leader
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