Volume 63, Issue 40 e202409255
Research Article

High-Performance Pomegranate-Like CuF2 Cathode Derived from Spent Lithium-Ion Batteries

Dr. Xianggang Zhou

Dr. Xianggang Zhou

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 China

These authors contributed equally to this work

Contribution: Data curation (lead), Formal analysis (lead), ​Investigation (lead), Writing - original draft (lead)

Search for more papers by this author
Dr. Shanshan Xiao

Dr. Shanshan Xiao

School of Materials Science and Engineering, Jilin Jianzhu University, Changchun, 130118 China

These authors contributed equally to this work

Contribution: Data curation (equal), Funding acquisition (supporting), ​Investigation (equal), Writing - original draft (equal)

Search for more papers by this author
Dr. Dan Yang

Dr. Dan Yang

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 China

Contribution: ​Investigation (supporting), Software (supporting)

Search for more papers by this author
Prof. Yingqi Li

Corresponding Author

Prof. Yingqi Li

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 China

Contribution: Conceptualization (lead), Formal analysis (lead), Funding acquisition (lead), Writing - review & editing (lead)

Search for more papers by this author
Dr. Ruiqi Yao

Dr. Ruiqi Yao

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Prof. Xingyou Lang

Corresponding Author

Prof. Xingyou Lang

Key Laboratory of Automobile Materials (Jilin University), Ministry of Education and School of Materials Science and Engineering, Jilin University, Changchun, 130024 China

Contribution: Conceptualization (equal), Formal analysis (equal), Funding acquisition (equal), Writing - review & editing (equal)

Search for more papers by this author
Prof. Huaqiao Tan

Corresponding Author

Prof. Huaqiao Tan

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 China

Contribution: Formal analysis (equal), Funding acquisition (equal), Writing - review & editing (equal)

Search for more papers by this author
Prof. Yangguang Li

Corresponding Author

Prof. Yangguang Li

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 China

Contribution: Funding acquisition (equal), Supervision (lead), Writing - review & editing (equal)

Search for more papers by this author
Prof. Qing Jiang

Prof. Qing Jiang

Key Laboratory of Automobile Materials (Jilin University), Ministry of Education and School of Materials Science and Engineering, Jilin University, Changchun, 130024 China

Contribution: Supervision (equal), Writing - review & editing (supporting)

Search for more papers by this author
First published: 10 July 2024
Citations: 13

Graphical Abstract

Organic electroltyte of spent lithium-ion batteries is utilized as fluorine source to in situ fluorinate the 3D porous Cu foam through a facile and mild solvothermal method. Benefiting from the protective solid-electrolyte interphase (SEI) and cross-linked sodium alginate (SA) layer, the optimized CuF2@void@SEI@SA cathode with pomegranate-like (yolk-shell) structure exhibits large specific capacity and superb cycling stability. This work not only provides new options for exploiting novel materials for large-scale high-density energy storage, the combined utilization of organic electrolyte of spent LIBs also realizes the unity of environmental, social and economic benefits.

Abstract

With the large-scale application of lithium-ion batteries (LIBs), a huge amount of spent LIBs will be generated each year and how to realize their recycling and reuse in a clean and effective way poses a challenge to the society. In this work, using the electrolyte of spent LIBs as solvent, we in situ fluorinate the conductive three-dimensional porous copper foam by a facile solvent-thermal method and then coating it with a cross-linked sodium alginate (SA) layer. Benefiting from the solid-electrolyte interphase (SEI) that accommodating the volume change of internal CuF2 core and SA layer that inhibiting the dissolution of CuF2, the synthesized CuF2@void@SEI@SA cathode with a pomegranate-like structure (yolk-shell) exhibits a large reversible capacity of ~535 mAh g−1 at 0.05 A g−1 and superb cycling stability. This work conforms to the development concept of green environmental protection and comprehensively realizes the unity of environmental, social and economic benefits.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.