A bimetallic sulfide FeCoS4@rGO hybrid as a high-performance anode for potassium-ion batteries

Erjin Zhang; Yuanning Luo; Hongwei Fu; Zhentao Luo; Peng Wang; Xuejiao Wang; Li Xu; Huaming Li

doi:10.1039/D4CC01026D

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A bimetallic sulfide FeCoS₄@rGO hybrid as a high-performance anode for potassium-ion batteries†

Erjin Zhang,

^a Yuanning Luo,^a Hongwei Fu,^b Zhentao Luo,^a Peng Wang,^a Xuejiao Wang,

*^a Li Xu

*^a and Huaming Li

Author affiliations

* Corresponding authors

^a Institute for Energy Research, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
E-mail: wangxuejiao@ujs.edu.cn, xulichem@ujs.edu.cn

^b School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China

Abstract

We synthesized a low metal-to-sulfur atomic ratio (0.5) FeCoS₄, exhibiting high reversible specific capacity. Reduced graphene oxide was covered on the surface to improve the cycling stability and rate performance further. Density functional theory calculations show that composite materials can effectively increase the adsorption energy and enhance the diffusion kinetics.

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Article information

DOI: https://doi.org/10.1039/D4CC01026D
Article type: Communication
Submitted: 05 Mar 2024
Accepted: 24 May 2024
First published: 24 May 2024

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Chem. Commun., 2024,60, 6411-6414

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A bimetallic sulfide FeCoS₄@rGO hybrid as a high-performance anode for potassium-ion batteries

E. Zhang, Y. Luo, H. Fu, Z. Luo, P. Wang, X. Wang, L. Xu and H. Li, Chem. Commun., 2024, 60, 6411 DOI: 10.1039/D4CC01026D

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Chemical Communications