锂离子电池电极改性用包覆或掺杂材料的负面作用

来源 :中国化学会第十七次全国电化学大会 | 被引量 : 0次 | 上传用户:wangwang09
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物理掺杂或者包覆是常见的改进锂离子电池正负极材料电化学性能的方法,如利用Ag包覆办法改进尖晶石锰酸锂的电化学性能,利用碳包覆改进磷酸铁锂的高倍率特性,等等.单纯的从改进电极性能的角度看,很多物理掺杂或者包覆方法是很有效的,但是,如果将电极材料置于真正的电池体系中以后,这种物理掺杂或者包覆对隔膜以及对电极的影响就不得不考虑在内了.
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