文献类型：期刊文献

英文题名：The effect of chelating agent on synthesis and electrochemical properties of LiNi0.6Co0.2Mn0.2O2

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

第一作者：李伟伟

通讯作者：Li, WW[1]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China;[2]Gen Res Inst Nonferrous Met, Res & Dev Ctr Vehicle Battery & Energy Storage, Beijing 100088, 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 453003, 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：2

期号：4

外文期刊名：SN APPLIED SCIENCES

收录：WOS:【ESCI(收录号:WOS:000532826500042)】；

基金：This study was partially supported by the National Natural Science Foundation of China (Nos. 51901201 and No.51701173) and Key Scientific Research Project of Colleges and Universities in Henan Province (Nos. 19A610008 and 20B430015).

语种：英文

外文关键词：LiNi0.6Co0.2Mn0.2O2; Sol-gel; Combustion method; Cathode material; Li-ion batteries

摘要：Ni-rich cathode material is one of the most promising material for Li-ion batteries (LIBs) in portable power and electric vehicles. However, how to recycle waste LIBs cathode materials is very important for environmental protection and resource utilization. LiNi0.6Co0.2Mn0.2O2 cathode materials were prepared by sol-gel combustion method Using waste LIBs cathode materials as raw materials. The effect of different gels on the crystal structure and morphology of LiNi0.6Co0.2Mn0.2O2 were studied by X-ray diffraction and scanning electron macroscopy. The electrochemical properties were investigated by charge-discharge testing, cyclic voltammetry and electrochemical impedance spectroscopy. The results showed that the samples contained some residual C and primary crystals have been formed during combustion stage. When glucose was used as gel regent, the sample has the good electrochemical properties with the initial discharge capacity of 176.9 mAh g(-1), initial coulombic efficiency of 87.0% and discharge capacity retention rate of 95.8% after 50 cycles at 0.2 C rate. The results showed that the less the cation mixing, the more complete of hexagonal crystal structure, which induced the decrease of impedance resistance and good reversibility of redox reaction.