Influences of transition metal on structural and electrochemical properties of Li[Ni_xCo_yMn_z]O_2(0.6≤x≤0.8) cathode materials for lithium-ion batteries

作     者：潘成迟 朱裔荣 杨应昌 侯红帅 景明俊 宋维鑫 杨旭明 纪效波 Cheng-chi PAN;Yi-rong ZHU;Ying-chang YANG;Hong-shuai HOU;Ming-jun JING;Wei-xin SONG;Xu-ming YANG;Xiao-bo JI

作者机构：中南大学化学化工学院有色金属资源化学教育部重点实验室长沙410083 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2016年第26卷第5期

页      面：1396-1402页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：Project(21473258)supported by the National Natural Science Foundation of China Project(13JJ1004)supported by the Distinguished Young Scientists of Hunan Province,China Project(NCET-11-0513)supported by the New Century Excellent Talents in University,China 

主　　题：Li[NixCoyMnz]O2 electrochemical performance cathode material lithium-ion battery 

摘      要：Li[NixCoyMn2]O2（0.6≤x≤0.8） cathode materials with a typical hexagonal α-NaFeO2 structure were prepared utilizing a co-precipitation *** is found that the ratio of peak intensities of（003） to（104） observed from X-ray diffraction（XRD）increases with decreasing the Ni content or increasing the Co *** scanning electron microscopy（SEM） images reveal that the small primary particles are agglomerated to form the secondary *** the Mn content increases,the primary and secondary particles become larger and the resulted particle size for the Li[Ni（0.6）Co（0.2）Mn（0.2）]O2 is uniformly distributed in the range of100-300 *** the initial discharge capacity of the Li/Li[NixCoyMn2]O2 cells reduces with decreasing the Ni content,the cyclic performance and rate capability are improved with higher Mn or Co *** Li[Ni（0.6）Co（0.2）Mn（0.2）]O2 can deliver excellent cyclability with a capacity retention of 97.1%after 50 cycles.