The auto-oxidative relithiation of spent cathode materials at low temperature environment for efficient and sustainable regeneration

被引：54

作者：

Fei, Zitong ^{[1
]}

Zhang, Yingjie ^{[1
]}

Meng, Qi ^{[1
]}

Dong, Peng ^{[1
]}

Li, Yong ^{[2
]}

Fei, Jinfu ^{[3
]}

Qi, Hongbin ^{[3
]}

Yan, Jin ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Natl & Local Joint Engn Lab Lithium Ion Batteries, Key Lab Adv Battery Mat Yunnan Prov, Kunming 650093, Peoples R China

[2] Yimen Co Ltd, Sino Platinum Met Resources, Yuxi 651100, Yunnan, Peoples R China

[3] Jinchuan Grp Ltd Ltd, Jinchang 737100, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2022年 / 432卷

基金：

中国国家自然科学基金;

关键词：

Spent lithium ions batteries; Direct regeneration; Auto-oxidative; Dimethyl sulfoxide; Structural evolution; LITHIUM-ION BATTERIES; VALUABLE METALS; RECOVERY;

D O I：

10.1016/j.jhazmat.2022.128664

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The reasonable recycling of spent lithium ions batteries is urgently required and beneficial to new energy industry development to approach the "carbon neutral " target. It is urgent to understanding the structural evolution of spent lack lithium cathode materials during direct regeneration technology with low temperatures condition to avoid deficiencies of complex operation in existing technology. Herein, a novel approach was developed for direct regeneration of spent LiCoO(2 )materials with a successful structural repair and electrochemical performance recovery, which are composed of auto-oxidative process followed by pre-treatment process of dismantling, soaking and sintering. The auto-oxidative system was composed of LiBr as lithium source and dimethyl sulfoxide as solvent and oxygen donor. The recycled LiCoO2 material shows significantly close to capacity retention of 90.79% than that of the commercial LiCoO2 material. Based on the structural evolution mechanism analysis, the novel approach is still expected to be applied into regeneration of other spent cathode materials and guide an efficient and sustainable direction for the recycling of spent lithium ions batteries.

引用

页数：10