Effect of nitridation on LiMn1.5Ni0.5O4 and its application as cathode material in lithium-ion batteries
Effect of nitridation on LiMn1.5Ni0.5O4 and its application as cathode material in lithium-ion batteries
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DOI：
10.1007/s10800-016-0919-3
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发表时间：
2016-01
影响因子：
2.9
通讯作者：
Sukeun Yoon
中科院分区：
文献类型：
--
作者：
Sukeun Yoon
AbstractNitridated LiMn1.5Ni0.5O4was prepared by a solid-state reaction followed by nitridation to investigate the effect of nitrogen on the structural and electrochemical performance of LiMn1.5Ni0.5O4cathode material for lithium-ion batteries. The structural and morphological features of the synthesized samples were characterized by various techniques. X-ray photoelectron spectrometer analysis revealed the existence of a trace amount of nitrogen on the surface and slight changes in Mn and Ni valence states. Electrochemical studies on the nitridated LiMn1.5Ni0.5O4was conducted using the galvanostatic charge–discharge process and electrochemical impedance spectroscopy. The nitridated LiMn1.5Ni0.5O4exhibited enhanced cyclability and rate capability compared with LiMn1.5Ni0.5O4, which originated from the improved electrical conductivity caused by increased proximity between active Ni redox centers as well as the increased number of Mn3+hopping carriers.Graphical abstract
