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Y掺杂提高高镍正极的充电电压
对于LiNi0.83Co0.12Mn0.05O2高镍材料,通过提高截止电压可获得大容量动力电池。但在深度脱锂过程中会释放出不稳定的晶格氧。为了解决上述问题,用Y3+取代Li+重构了电子结构。Li层内的掺杂物可以将电子转移到相邻的晶格氧上。随后,在还原耦合机制的作用下,氧 ...
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