为了解决尖晶石锰酸锂(LiMn2O4)电池正极在高温下容量降低过快的问题,通过简单方法将NiO包覆到LiMn2O4粉体表面,并对包覆前后LiMn2 O4粉体材料的结构、形貌和相应正极材料的电化学性能进行了研究.结果表明:NiO包覆LiMn2 O4粉体后其晶体结构没有发生改变,表面呈现钟乳石状突起;与包覆前相比,NiO包覆LiMn2 O4粉体后的正极材料的循环性能和倍率性能分别提高了8.79％和14.04％.
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