Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 766, Issue -, Pages 1086-1091Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.07.065
Keywords
Iron sulfide/carbon; Hybrid cluster; Potassium-ion batteries; Anode
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Funding
- National Natural Science Foundation of China [21373072]
- China Postdoctoral Science Foundation [08600-4452-10148-080]
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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. (c) 2018 Elsevier B.V. All rights reserved.
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