%0 Journal Article
%T Preparation and performance of LiNi0.8Co0.2O2 cathode material based on Co-substituted ¦Á-Ni(OH)2 precursor
%A YuShi He
%A Li Pei
%A XiaoZhen Liao
%A ZiFeng Ma
%J Chinese Science Bulletin
%@ 1861-9541
%D 2008
%I 
%R 10.1007/s11434-007-0525-1
%X Co-substituted ¦Á-Ni(OH)2 was synthesized by a novel microwave homogeneous precipitation method in the presence of urea. LiNi0.8Co0.2O2 cathode material was synthesized by calcining Co-substituted ¦Á-Ni(OH)2 precursor and LiOH¡¤H2O at 900¡ãC for 10 h in flowing oxygen. XRD, FTIR, FESEM and electrochemical tests were used to study the physical and the electrochemical performances of the materials. The results show that the prepared LiNi0.8Co0.2O2 compound has a good layered hexagonal structure. Moreover, the LiNi0.8Co0.2O2 cathode material demonstrates stable cyclability with a high initial specific discharge capacity of 183.9 mAh/g. The good electrochemical performance could be attributed to the uniform distribution of Ni2+ and Co2+ ions in the crystal structure and a minimal cation mixing in LiNi0.8Co0.2O2 host structure.
%K lithium ion battery
%K microwave homogeneous precipitation method
%K Co-substituted ¦Á-Ni(OH)2
%K LiNi0.8Co0.2O2
%U http://link.springer.com/article/10.1007/s11434-007-0525-1