氧化镧掺杂锰酸锂材料的制备及其电化学性能  

Preparation and electrochemical performance study of lithium manganate material doped with lanthanum oxide

作　　者：周利强 段长征 郑好博 许光日[1] ZHOU Liqiang;DUAN Changzheng;ZHENG Haobo;XU Guangri(School of Chemistry and Chemical Engineering,Henan Institute of Science and Technology,Xinxiang Henan 453003,China;Xinxiang Hongli Supply Source Technology Co.,Ltd.,Xinxiang Henan 453003,China)

机构地区：[1]河南科技学院化学化工学院,河南新乡453003 [2]新乡市弘力电源科技有限公司,河南新乡453003

出　　处：《电源技术》2024年第9期1726-1729,共4页Chinese Journal of Power Sources

摘　　要：采用高温固相合成法制备氧化镧掺杂的锰酸锂材料,研究了氧化镧不同掺杂比例(与二氧化锰的质量比分别为0%、0.5%、1.0%和1.5%)对样品性能的影响。实验结果表明:当氧化镧掺杂量为1%时,所制的锰酸锂材料在1 C下比容量最大,达到120.42 mAh/g;首次充放电效率最高,达96.76%;100次循环的1 C容量保持率最大,为90.28%。In this paper,a lithium manganate material doped with lanthanum oxide was prepared by high temperature solid phase synthesis method.The influence of different doping ratio(mass ratio of La_(2)O_(3) to MnO_(2) was 0%,0.5%,1.0%and 1.5%,respectively)was investigated.The results showed that the maximum capacity of 1 C was 120.42 mAh/g,when the La_(2)O_(3) doping amount was 1%.The first charge and discharge efficiency was the highest(96.76%).After 100 cycles,the 1 C volume retention rate was maximum(90.28%).

关 键 词：氧化镧掺杂 高温固相合成法 锰酸锂材料 

分 类 号：TM912[电气工程—电力电子与电力传动]