编号：CYYJ03324
篇名：氧化铟包覆镍锰酸锂正极材料的电化学性能研究
作者：蔡敏 赵汉民 吴春燕 高娟凤
关键词： 氧化铟 镍锰酸锂 包覆 电化学性能
机构： 广西民族师范学院化学与生物工程学院
摘要： In order to improve the electrochemical performance of LiNi0.5Mn1.5O4,a layer of inert indium oxide(In2O3)was coated on the surface of lithium nickel-manganate electrode material by high temperature solid phase method using indium nitrate(In(NO3)3·H2O)as raw material,and the effect of different amount of In2O3coating on the electrochemical performance of lithium nickel-manganate composite material was studied.XRD test results show that coating indium oxide does not change the structure of anode material LiNi0.5Mn1.5O4.When the coating volume is 7%,the first discharge specific capacity is 134.21 mAh/g at 0.1 mA test current,which is significantly higher than that of the uncoated material(115.65 mAh/g).After 100 cycles,the capacity is 128.4 mAh/g,and the capacity retention rate is 95.67%.Under the test current condition of 0.5 mA,the first discharge specific capacity is 78.13 mAh/g,after 100 cycles the specific capacity is 56.25 mAh/g,the capacity retention rate is 64.44%.In2O3coating can protect the material and promote ion conduction,which can effectively improve the electrochemical performance of cathode materials.
