Volume 6, Issue 3 2101320
Research Article

Magneto-Electrodeposition of 3D Cross-Linked NiCo-LDH for Flexible High-Performance Supercapacitors

Hui Li

Hui Li

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

University of Science and Technology of China, Hefei, 230026 P. R. China

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Shuai Lin

Corresponding Author

Shuai Lin

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

E-mail: [email protected][email protected]

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Han Li

Han Li

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

University of Science and Technology of China, Hefei, 230026 P. R. China

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Ziqiang Wu

Ziqiang Wu

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

University of Science and Technology of China, Hefei, 230026 P. R. China

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Qian Chen

Qian Chen

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

University of Science and Technology of China, Hefei, 230026 P. R. China

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Lili Zhu

Lili Zhu

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

University of Science and Technology of China, Hefei, 230026 P. R. China

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Changdian Li

Changdian Li

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

University of Science and Technology of China, Hefei, 230026 P. R. China

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Xuebin Zhu

Corresponding Author

Xuebin Zhu

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

E-mail: [email protected][email protected]

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Yuping Sun

Yuping Sun

Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei, 230031 P. R. China

Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093 P. R. China

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First published: 15 January 2022
Citations: 33

Abstract

Layered double hydroxides (LDHs) with outstanding redox activity on flexible current collectors can serve as ideal cathode materials for flexible hybrid supercapacitors in wearable energy storage devices. Electrodeposition is a facile, time-saving, and economical technique to fabricate LDHs. The limited loading mass induced by insufficient mass transport and finite exposure of active sites, however, greatly hinders the improvement of areal capacity. Herein, magneto-electrodeposition (MED) under high magnetic fields up to 9 T is developed to fabricate NiCo-LDH on flexible carbon cloth (CC) as well as Ti3C2Tx functionalized CC. Owing to the magneto-hydrodynamic effect induced by magnetic–electric field coupling, the loading mass and exposure of active sites are significantly increased. Moreover, a 3D cross-linked nest-like microstructure is constructed. The MED-derived NiCo-LDH delivers an ultrahigh areal capacity of 3.12 C cm–2 at 1 mA cm–2 and as-fabricated flexible hybrid supercapacitors show an excellent energy density with an outstanding cycling stability. This work provides a novel route to improve electrochemical performances of layered materials through MED technique.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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