A green, efficient, closed-loop direct regeneration technology for reconstructing of the LiNi0.5Co0.2Mn0.3O2 cathode material from spent lithium-ion batteries

被引：122

作者：

Fan, Xiaoping ^{[1
,4
]}

Tan, Chunlei ^{[1
,4
]}

Li, Yu ^{[1
,4
]}

Chen, Zhiqiang ^{[1
,4
]}

Li, Yahao ^{[2
,3
]}

Huang, Youguo ^{[1
,4
]}

Pan, Qichang ^{[1
,4
]}

Zheng, Fenghua ^{[1
,4
]}

Wang, Hongqiang ^{[1
,4
]}

Li, Qingyu ^{[1
,4
]}

机构：

[1] Guangxi Normal Univ, Sch Chem & Pharmaceut Sci, Guangxi Key Lab Low Carbon Energy Mat, Guilin 541004, Peoples R China

[2] Zhejiang Univ, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[3] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

[4] Guangxi Normal Univ, Guangxi New Energy Ship Battery Engn Technol Res, Guilin 541004, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2021年 / 410卷

基金：

中国国家自然科学基金;

关键词：

Spent lithium-ion batteries; Cathode material; LiNi0.5Co0.2Mn0.3O2; Regeneration technology; Reconstructing;

D O I：

10.1016/j.jhazmat.2020.124610

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Lithium nickel manganese cobalt oxide in the spent lithium ion batteries (LIBs) contains a lot of lithium, nickel, cobalt and manganese. However, how to effectively recover these valuable metals under the premise of reducing environmental pollution is still a challenge. In this work, a green, efficient, closed-loop direct regeneration technology is proposed to reconstruct LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode materials from spent LIBs. Firstly, the failure mechanism of NCM523 cathode materials in the spent LIBs is analyzed deeply. It is found that the spent NCM523 material has problems such as the dissolution of lithium and transition metals, surface interface failure and structural transformation, resulting in serious deterioration of electrochemical performance. Then NCM523 material was directly regenerated by supplementing metal ions, granulation, ion doping and heat treatment. Meanwhile, PO43- polyanions were doped into the regenerated NCM material in the recovery process, showing excellent electrochemical performance with discharge capacity of 189.8 mAh g(-1) at 0.1 C. The recovery process proposed in this study puts forward a new strategy for the recovery various lithium nickel cobalt manganese oxide (e.g., LiNi1/3Co1/3Mn1/3O2, LiNi0.5Co0.2Mn0.3O2, LiNi0.6Co0.2Mn0.2O2 and LiNi0.8Co0.1Mn0.1O2) and accelerates the industrialization of spent lithium ion battery recycling.

引用

页数：10