Ammonia leaching mechanism and kinetics of LiCoO_(2) material from spent lithium-ion batteries

查看全文 作　　者：Dongmin [1]Li;Bao [1]Zhang;Xing [1]Ou;Jiafeng [1]Zhang;Kui [2]Meng;Guanjun [1]Ji;Pengfei [1]Li;Jianhui [3]Xu

机构地区：[1]School of Metallurgy and Environment,Central South University,Changsha 410083,China;[2]College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China;[3]School of Environment and Civil Engineering,Dongguan University of Technology,Dongguan 523808,China

出　　处：《Chinese Chemical Letters》索引2021年第32卷第7期,共5页

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51822812,51778627);the Fundamental Research Funds for the Central Universities of Central South University(No.2020zzts474)。 摘　　要：In this paper,the ammonia leaching process and high-energy ball milling method were adapted to recover spent LiCoO_(2) material.The ammonia reduction leaching mechanism of LiCoO_(2) material in the ammonia-sodium sulfite-ammonium chloride system was elucidated.Compared with untreated LiCoO_(2) material,the leaching equilibrium time of LiCoO_(2) after ball-milled for 5 h was reduced from 48 h to 4 h,and the leaching efficiency of lithium and cobalt was improved from 69.86%and 70.80%to 89.86%and98.22%,respectively.Importantly,the apparent activation energy and leaching kinetic equation of the reaction was calculated by the shrinking core reaction model,indicating that the reaction was controlled by the chemical reaction. 关键词：Spent LiCoO_(2) RECYCLING Ammonia leaching High-energy ball milling Lithium-ion batteries

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Ammonia leaching mechanism and kinetics of LiCoO_(2) material from spent lithium-ion batteries

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