火法冶金
浸出(土壤学)
锂(药物)
湿法冶金
碳热反应
环境友好型
烘烤
材料科学
电化学
阴极
环境科学
化学
化学工程
冶金
冶炼
电极
硫酸
碳化物
内分泌学
医学
生态学
物理化学
生物
土壤科学
工程类
土壤水分
作者
Xi Zhu,Yanjuan Li,Mengqi Gong,Ran Mo,Siyuan Luo,Xiao Yan,Shun Yang
标识
DOI:10.1002/ange.202300074
摘要
Abstract Pyrometallurgy technique is usually applied as a pretreatment to enhance the leaching efficiencies in the hydrometallurgy process for recovering valuable metals from spent lithium‐ion batteries. However, traditional pyrometallurgy processes are energy and time consuming. Here, we report a carbothermal shock (CTS) method for reducing LiNi 0.3 Co 0.2 Mn 0.5 O 2 (NCM325) cathode materials with uniform temperature distribution, high heating and cooling rates, high temperatures, and ultrafast reaction times. Li can be selectively leached through water leaching after CTS process with an efficiency of >90 %. Ni, Co, and Mn are recovered by dilute acid leaching with efficiencies >98 %. The CTS reduction strategy is feasible for various spent cathode materials, including NCM111, NCM523, NCM622, NCM811, LiCoO 2 , and LiMn 2 O 4 . The CTS process, with its low energy consumption and potential scale application, provides an efficient and environmentally friendly way for recovering spent lithium‐ion batteries.
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