标题: Recovery of lithium iron phosphate batteries through electrochemical oxidation in Na2CO3 solutions

作者: Zhao, JJ (Zhao, Jingjing); Zhou, FY (Zhou, Fengyin); Wang, HY (Wang, Hongya); Gao, SB (Gao, Shuaibo); Wang, DH (Wang, Dihua); Yin, HY (Yin, Huayi)

来源出版物: JOURNAL OF POWER SOURCES卷: 582文献号: 233562 DOI: 10.1016/j.jpowsour.2023.233562提前访问日期: AUG 2023出版年: OCT 30 2023

摘要: The accumulation of spent LiFePO4 is forming a "Li mine" in urban areas. Those "resources" not only cause waste of metal species but also seriously pollute the environment. The pursuit of a clean recycling way with minimized chemicals and secondary wastes has long been researched to close the supply chain of strategic elements such as Li. This research presents a straightforward and effective electrochemical method for the recovery of the spent LiFePO4 by electrochemically oxidizing LiFePO4 into FePO4 while releasing Li+ into Na2CO3 solution and collecting Li2CO3 in one step without using acids. The conversion of LiFePO4 to FePO4 is realized by anodic oxidation, and the leaching efficiency of Li reaches more than 98%. Overall, the electrochemical-assisted method is a promising clean recycling method that even could use the surplus energy of spent batteries to drive the recovery process with reduced environmental footprints.

作者关键词: Electrochemical oxidation; Lithium iron phosphate batteries; Recycling; Lithium carbonate

地址: [Zhao, Jingjing; Zhou, Fengyin; Wang, Hongya; Gao, Shuaibo; Wang, Dihua; Yin, Huayi] Wuhan Univ, Sch Resource & Environm Sci, 299 Bayi Rd, Wuhan 430072, Peoples R China.

[Zhao, Jingjing; Zhou, Fengyin; Wang, Hongya; Gao, Shuaibo; Wang, Dihua; Yin, Huayi] Wuhan Univ, Joint Ctr Green Mfg Energy Storage Mat, Wuhan 430072, Peoples R China.

[Zhao, Jingjing; Zhou, Fengyin; Wang, Hongya; Gao, Shuaibo; Wang, Dihua; Yin, Huayi] Chilwee, Wuhan 430072, Peoples R China.

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

通讯作者地址: Yin, HY (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, 299 Bayi Rd, Wuhan 430072, Peoples R China.

电子邮件地址:yinhuayi@whu.edu.cn

影响因子：9.2