文献类型：期刊文献

英文题名：Feasible regeneration of cathode material from spent portable electronics batteries via nano-bubbles enhanced leaching

作者：Gu, Shuai[1,2,3];Kong, Jiao[1];Xing, Lei[1];Zhu, Xiaoran[4];Xu, Jun[4];Chen, Canyu[5];Zhang, Ziyang[5]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake Re, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Engn Res Ctr Salt Lake Resources Proc Engn, Minist Educ, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Joint Int Lab Potassium & Lithium Strateg Resource, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：368

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20223112456653);WOS:【SCI-EXPANDED(收录号:WOS:000835981000005)】；

基金：This research was sponsored by the Shanghai Sailing Program (Grant number 21YF1409000) , Nature Science Foundation of Shanghai (Grant number 22ZR1415800) , NSFC-Qinghai Qaidam Saline Lake Joint Research Fund (Grant number U20A20142) and East China University of Science and Technology Outstanding Talents Cultivation Fund (Grant number JKB012116022 and JKB01211707) .

语种：英文

外文关键词：Ab initio calculations; Nano -bubbles; Regeneration; Spent lithium -ion batteries; Thermodynamics

摘要：The rapid development of electric vehicles significantly aggravates the demand for ternary cathode materials. However, spent lithium-ion batteries (LIBs) from portable applications, generally composed of LiCoO2, dominate the volume for recycling. Besides, slow leaching kinetics and low leaching capacities are crucial factors that hinder the commercialization of hydrometallurgical recycling. Here, an economically feasible process for the regeneration of LiNi0.6Co0.2Mn0.2O2 (NCM622) from spent portable electronics batteries is proposed. By introducing oxygen nano-bubbles (O2 NBs) into the leaching solution, faster leaching kinetics and 2.5 times higher leaching capacities are obtained compared with those without O2 NBs. The regenerated NCM622 cathode material demonstrates a well-ordered layered hexagonal structure with a low degree of Li+/Ni2+ mixing ratio, which facilitates the reliable reversible capacity, low polarization, high rate capabilities, and capacity retention ratio. By adopting thermodynamic and the first-principles calculations, the mechanism for the regeneration process is revealed.