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近年来,研究人员发现过渡金属掺杂尖晶石材料LiMxMn2-xO4(M=Ni,Co,Cr,Cu,Fe,Al),放电平台可以达到5V左右.在这些材料中,由于LiNi0.5Mn1.5O4具有相对较高的容量,放电平台维持在4.7V,而备受关注.但是LiNi0.5 Mn1.5O4仍然存在结构不稳定、容量衰减比较严重等问题,研究人员通过掺杂金属离子或者取代部分氧来提高材料性能,以及通过包覆来减少材料与电解液的接触.综述了近年来为进一步提高LiNi0.5Mn1.5O4电化学性能而对其进行改性的一些研究成果.

参考文献

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