文献类型：期刊文献

英文题名：Recovery and regeneration of ternary cathode materials through Solid-State reactions

作者：Lin, Tiantian[1];Ren, Ketai[1];Liu, Honglai[1,2];Li, Quan[3];Lian, Cheng[1,2];Li, Jingkun[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Shanghai Xiangfenghua Technol Co Ltd, Shanghai 200949, Peoples R China

年份：2025

卷号：515

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20252018443949);WOS:【SCI-EXPANDED(收录号:WOS:001495284800023)】；

基金：This work was financially supported by the open Foundation of Shanghai Jiao Tong University Shaoxing Research Institute of Renewable Energy and Molecular Engineering (No. JDSX2022013) .

语种：英文

外文关键词：Lithium-ion battery recycling; Selective lithium recovery; Cathode regeneration; NCM cathode; Solid-state reaction

摘要：The recycling of spent LiNixCoyMnzO2 (NCM) not only alleviates the issue of lithium resource scarcity, but also ensures the sustainable development of lithium-ion batteries in industry. However, traditional metal extraction techniques from spent NCM often require high energy consumption or tedious separation and purification processes. In this work, we propose a hybrid pyro-hydrometallurgy method to selectively recover lithium from spent NCM811 through solid-state reaction with oxalic acid, enabling both the preferential extraction of lithium with a high recovery efficiency of 95.7 %, and the synthesis of ternary oxide precursors. Then NCM811cathode material is directly regenerated from the remaining ternary oxide. The regenerated NCM811cathode material delivers a discharge capacity of 183.3 mAh g- 1 (0.1C) and a capacity retention of 60.4 % after 200 cycles at 1C, which are comparable to those of commercial NCM811. This work provides a scalable strategy to achieve the closed-loop recycling of NCM cathode with high recovery efficiency and low cost.