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Cu-supported network with ZIF-67 derivative encapsulated in polyacrylonitrile-derived carbon as a high-performance self-supported anode for lithium-ion batteries.

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Bibliographic Details
Title:	Cu-supported network with ZIF-67 derivative encapsulated in polyacrylonitrile-derived carbon as a high-performance self-supported anode for lithium-ion batteries.
Authors:	Li, Yining¹ (AUTHOR), Yang, Qi¹ (AUTHOR) qiiyang@163.com, Hou, Haochen¹ (AUTHOR), Yang, Xiong¹ (AUTHOR), Wang, Xuebin¹ (AUTHOR), Gao, Jiazhi¹ (AUTHOR)
Source:	Journal of Solid State Electrochemistry. Feb2026, Vol. 30 Issue 2, p881-891. 11p.
Subjects:	Lithium-ion batteries, Anodes, Metal-organic frameworks, Electrode performance, Electrodes, Electrochemical analysis, PAN-based carbon fibers
Abstract:	In order to prevent the aggregation of ZIF-67, increase the electrochemical reaction sites, promote the diffusion of lithium-ions, improve the cycling stability of the electrode, and avoid the negative impact of conductive agents and binders, a copper-supported network with ZIF-67 derivative encapsulated in a carbon matrix was synthesized by sintering the copper foil coated by the suspension containing ZIF-67, polyacrylonitrile (PAN), polymethyl methacrylate (PMMA), and N-dimethylformamide (DMF). The obtained copper-supported coating is CoOx/C composite. Being sintered in an inert atmosphere at high temperature, ZIF-67 decomposes to form Co3O4/C composite, PAN decomposes to form carbon, and PMMA volatilizes. The volatilization of PMMA at high temperatures leads to the network structure of the ZIF-67 derivative/PAN-derived carbon coating. The ZIF-67 derivative/PAN-derived carbon coating exhibits a high capacity of 1149 mAh g−1 and good cycling stability. Its good electrochemical performance depends on the following factors: (1) the steric hindrance effect of PAN-derived carbon avoids the aggregation of the ZIF-67 derivative; (2) the copper-supported coating is free of conductive agents or binders; (3) the network structure is beneficial for increasing the electrochemical reaction sites for lithium storage, promoting the diffusion of lithium-ions, and improving the cycling stability of the electrode. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	In order to prevent the aggregation of ZIF-67, increase the electrochemical reaction sites, promote the diffusion of lithium-ions, improve the cycling stability of the electrode, and avoid the negative impact of conductive agents and binders, a copper-supported network with ZIF-67 derivative encapsulated in a carbon matrix was synthesized by sintering the copper foil coated by the suspension containing ZIF-67, polyacrylonitrile (PAN), polymethyl methacrylate (PMMA), and N-dimethylformamide (DMF). The obtained copper-supported coating is CoOx/C composite. Being sintered in an inert atmosphere at high temperature, ZIF-67 decomposes to form Co3O4/C composite, PAN decomposes to form carbon, and PMMA volatilizes. The volatilization of PMMA at high temperatures leads to the network structure of the ZIF-67 derivative/PAN-derived carbon coating. The ZIF-67 derivative/PAN-derived carbon coating exhibits a high capacity of 1149 mAh g−1 and good cycling stability. Its good electrochemical performance depends on the following factors: (1) the steric hindrance effect of PAN-derived carbon avoids the aggregation of the ZIF-67 derivative; (2) the copper-supported coating is free of conductive agents or binders; (3) the network structure is beneficial for increasing the electrochemical reaction sites for lithium storage, promoting the diffusion of lithium-ions, and improving the cycling stability of the electrode. [ABSTRACT FROM AUTHOR]
ISSN:	14328488
DOI:	10.1007/s10008-025-06454-3