标題: NaOH-Assisted Roasting for Corecovery of Spent LiFePO4 and LiCoO2 Batteries

作者: Li, XY (Li, Xiangyun); Gao, SB (Gao, Shuaibo); Zhou, FY (Zhou, Fengyin); Qu, X (Qu, Xin); Cai, YQ (Cai, Yuqi); Wang, DH (Wang, Dihua); Yin, HY (Yin, Huayi)

來源出版物: ACS SUSTAINABLE CHEMISTRY & ENGINEERING  DOI: 10.1021/acssuschemeng.3c02755  提前訪問日期: AUG 2023  

摘要: Additive-assisted roasting has proven to be an effectivestrategyto improve metal recovery and decrease pyrometallurgical temperaturesin the recycling of spent lithium-ion batteries (LIBs). However, excessiveusage of additives and polluting exhaust emissions still need to beresolved. Here, a corecovery approach based on NaOH-assisted roastingis proposed for the recovery of valuable metals from spent LiFePO4 and LiCoO2 batteries, wherein NaOH is used asa roasting agent to destroy the structure of LiFePO4 andgenerate Fe(OH)(2) to reduce LiCoO2, separatingFe and Co from Li that is in the form of phosphates (Li x Na y PO4). Hence,94.8% of Li can be selectively separated by water leaching and recoveredas Li3PO4 by stepwise evaporation and crystallization.By Everbatt model analysis, the NaOH-assisted roasting process isa promising candidate for the economic, environmental, and efficientrecovery of LIBs with high utilization of additives and low emissions.

NaOH-assisted roasting realized the corecoveryof LiFePO4 and LiCoO2, reducing additive amountsand offeringsignificant environmental and economic advantages.

作者關鍵詞: spent LIBs; NaOH-assisted roasting; LiCoO2; LiFePO4; corecovery

地址: [Li, Xiangyun; Gao, Shuaibo; Zhou, Fengyin; Qu, Xin; Cai, Yuqi; Wang, Dihua; Yin, Huayi] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

[Wang, Dihua; Yin, Huayi] Wuhan Univ & Chilwee, Joint Ctr Green Mfg Energy Storage Mat, Wuhan 430072, Peoples R China.

[Wang, Dihua; Yin, Huayi] Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

通訊作者地址: Gao, SB; Yin, HY (通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

Yin, HY (通訊作者)，Wuhan Univ & Chilwee, Joint Ctr Green Mfg Energy Storage Mat, Wuhan 430072, Peoples R China.

Yin, HY (通訊作者)，Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

電子郵件地址: 1281850276@qq.com; yinhuayi@whu.edu.cn

影響因子：8.4