Citation: Yun Wei, Lei Zhou, Wenbin Hu, Liming Yang, Guang Yang, Chaoqiang Wang, Hui Shi, Fei Han, Yufa Feng, Xuan Ding, Penghui Shao, Xubiao Luo. Recovery of cathode copper and ternary precursors from CuS slag derived by waste lithium-ion batteries: Process analysis and evaluation[J]. Chinese Chemical Letters, ;2024, 35(7): 109172. doi: 10.1016/j.cclet.2023.109172 shu

Recovery of cathode copper and ternary precursors from CuS slag derived by waste lithium-ion batteries: Process analysis and evaluation

Yun Wei ^a ,
Lei Zhou ^a ,
Wenbin Hu ^c ,
Liming Yang ^{a, **,} ,
Guang Yang ^d ,
Chaoqiang Wang ^e ,
Hui Shi ^a ,
Fei Han ^a ,
Yufa Feng ^a ,
Xuan Ding ^a ,
Penghui Shao ^a ,
Xubiao Luo ^{a, b, *,}

a.
National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, China
b.
School of Life Science, Jinggangshan University, Ji’an 343009, China
c.
CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
d.
Biomass Molecular Engineering Center and Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei 230036, China
e.
Jiangxi Ganfeng Recycling Technology Co. LTD., Xinyu 338004, China

^**

yangliming0809185@126.com

luoxubiao@126.com

Received Date: 19 June 2023
Revised Date: 11 September 2023
Accepted Date: 6 October 2023
Available Online: 12 October 2023

Figures(6)

The efficient and environmentally friendly recycling technology of waste residue that including abundant heavy metal produced during the recovery of lithium batteries has become a research hotspot. Herein, a novelty process of acid leaching-selective electrodeposition-deep impurity removal-regeneration was proposed to recovery of the CuS slag, which has been efficient transferred to high purity cathode copper and commercially available ternary precursors. Copper cathode with a purity of 99.67% was prepared under electrochemical reaction conditions at −0.55 V for 2 h. A novel impurity remover-Mn powder, which was used to remove the residual impurities and as a feedstock for the ternary precursor. Finally, NCM523 was regenerated by co-precipitation. The process is superior to the traditional process in economy, energy consumption, CO₂ emissions, product purity and process duration. This study provides a new approach for solid waste recovery and precious metal enrichment.
- CuS slag,
- Electrodeposition,
- Cathode copper,
- Ternary precursor,
- Solid waste recovery
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