Abstract
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.
Original language | English |
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Pages (from-to) | 1086-1091 |
Number of pages | 6 |
Journal | Journal of Alloys and Compounds |
Volume | 766 |
DOIs | |
Publication status | Published - 25 Oct 2018 |
Externally published | Yes |
Keywords
- Anode
- Hybrid cluster
- Iron sulfide/carbon
- Potassium-ion batteries