Synthesis and electrochemical performances of LiCoO_2 recycled from the incisors bound of Li-ion batteries

查看全文 作　　者：LI Jinhui ZHONG Shengwen XIONG Daoling CHEN [1]Hao

机构地区：[1]School of Materials and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341009, China

出　　处：《Rare Metals》索引2009年第28卷第4期,共5页

基　　金：supported by the National Natural Science Foundation of China (Nos. 50762004 and 50864004) 摘　　要：A new LiCoO2 recovery technology for Li-ion batteries was studied in this paper. LiCoO2 was peeled from the Al foil with dimethyl acetamide (DMAC), and then polyvinylidene fluoride (PVDF) and carbon powders in the active material were eliminated by high temperature calcining. Subsequently, Li2CO3, LiOH·H2O and LiAc·2H2O were added into the recycled powders to adjust the Li/Co molar ratio to 1.00. The new LiCoO2 was obtained by calcining the mixture at 850°C for 12 h in air. The structure and morphology of the recycled powders and resulting samples were studied by XRD and SEM techniques, respectively. The layered structure of LiCoO2 synthesized by adding Li2CO3 is the best, and it is found to have the best characteristics as a cathode material in terms of charge-discharge capacity and cycling performance. The first discharge capacity is 160 mAh·g-1 between 3.0-4.3 V. The discharge capacity after cycling for 50 times is still 145.2 mAh·g-1. 关键词：LICOO2 锂离子电池电化学性能合成充放电容量二甲基乙酰胺聚偏二氟乙烯扫描电镜技术

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Synthesis and electrochemical performances of LiCoO_2 recycled from the incisors bound of Li-ion batteries

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