文献类型：期刊文献

英文题名：Regeneration of NCM622 from end-of-life lithium-ion battery cathode materials

作者：Gu, Shuai[1,2];He, Ting[1,2];Kong, Jiao[1,2];Fu, Tongtong[3];Guo, Zirui[3];Cui, Jingzhi[3];Chen, Zhihao[3]

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, Joint Int Lab Potassium & Lithium Strateg Resource, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：13

期号：2

起止页码：906

外文期刊名：RSC ADVANCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000906687300001)】；

基金：This research was sponsored by the Shanghai Sailing Program (Grant number 21YF1409000), Nature Science Foundation of Shanghai (Grant number 22ZR1415800).

语种：英文

摘要：The boom of the electric vehicle industry significantly aggravates the demand for lithium-ion batteries (LIBs), especially the ternary cathode materials, however, the majority of end-of-life (EOL) LIBs on the market are batteries utilized in customer electronics. Here, we utilized the mixed EOL LIBs from cell phones and laptops to manufacture the LiNi(0.6)Co0(.2)Mn(0.2)O(2) (NCM622) cathode material. A feasible, high efficiency (99.98% Co, 99.98% Ni, 99.99% Mn, and 99.99% Li), and ultra-fast leaching of EOL LIB cathodes was achieved. Thermodynamic calculations suggested that the coordination number, coordination species concentrations, and fractions have significant effects on the apparent activation energy and the equilibrium of the leaching reactions. The remanufactured NCM622 cathode material demonstrated a well-ordered layered hexagonal structure with a low Li+/Ni2+ mixing ratio, which facilitated reliable reversible capacity, low polarization, high rate capabilities (163.8 mA h g(-1)), and capacity retention ratio (94.3%).