Iron sulfide/carbon hybrid cluster as an anode for potassium-ion storage

Due to the natural abundance and low cost of potassium resource, potassium-ion batteries (KIBs) are promising alternatives in comparison to lithium-ion batteries (LIBs). Herein, we report a three-dimensional (3D) iron sulfide/carbon hybrid cluster as a novel anode material for high-performance KIBs....

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Bibliographic Details
Published in:Journal of alloys and compounds 2018-10, Vol.766, p.1086-1091
Main Authors: Yu, Qiyao, Hu, Jun, Gao, Yunzhi, Gao, Jinlong, Suo, Guoquan, Zuo, Pengjian, Wang, Wei, Yin, Geping
Format: Article
Language:English
Subjects:
Amorphous materials
Anode
Anodes
Batteries
Carbon
Clusters
Conductivity
Electrode materials
Hybrid cluster
Ion storage
Iron
Iron sulfide/carbon
Iron sulfides
Lithium-ion batteries
Performance enhancement
Potassium
Potassium-ion batteries
Rechargeable batteries
Synergistic effect
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Summary:Due to the natural abundance and low cost of potassium resource, potassium-ion batteries (KIBs) are promising alternatives in comparison to lithium-ion batteries (LIBs). Herein, we report a three-dimensional (3D) iron sulfide/carbon hybrid cluster as a novel anode material for high-performance KIBs. The iron sulfide and amorphous carbon petals overlap as a whole, forming a stable conductive structure. A high capacity of 226 mAh g−1 is obtained at a current density of 0.1 A g−1 over 100 cycles. The improved electrochemical performances are mainly due to the synergistic effect of the unique structure with high capacity, high conductivity and less agglomeration. •A three-dimensional (3D) iron sulfide/carbon hybrid cluster has been synthesized.•For the first time it is used as an anode material for potassium-ion batteries.•Good electrochemical performance is achieved due to the synergistic effect of the unique structure.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2018.07.065