文献类型：期刊文献

英文题名：Effect of Na Doping on Electrochemical Properties of Cobalt-Free Li-Rich Mn-Based Cathode Materials

作者：Li Weiwei[1];Yao Dongjia[2];Yao Lu[1];Si Jiangju[1];Yang Jie[1];Lang Wuke[1]

第一作者：李伟伟

通讯作者：Li, WW[1];Yao, L[1];Si, JJ[1]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang, Henan, Peoples R China;[2]Henan Fanrui Composite Mat Res Inst, Zhengzhou, Henan, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang, Henan, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

年份：2020

卷号：210

期号：1

起止页码：1-5

外文期刊名：INTEGRATED FERROELECTRICS

收录：;EI(收录号：20203209020406);Scopus(收录号：2-s2.0-85089034230);WOS:【SCI-EXPANDED(收录号:WOS:000556080500001)】；

基金：This work was supported by National Natural Science Foundation of China (No. 51701173) and Key Scientific Research Project of Colleges and Universities in Henan Province (No. 19A610008).

语种：英文

外文关键词：Na doping; electrochemical properties; Li-rich; cathode materials

摘要：Na doping is introduced to improve the electrochemical properties of Li(1.2)Mn(0.6)Ni(0.2)O(2)cathode material, which is synthesized by sol-gel method. The effect of Na doping on the morphological, structural and electrochemical properties was systematically studied and analyzed. These results illustrate that lattice layer spacing is enlarged by Na doping, which is beneficial for the diffusion of Li-ion, and the voltage fading is successfully suppressed. The best electrochemical properties were obtained when Na doping amount is approximately 1%, which is attributed to the stronger structural stability and better reversibility of Li(+)during the initial charge and discharge process.