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Sns2 nanosheets with rgo modification as high-performance anode materials for na-ion and k-ion batteries

Nanomaterials, ISSN: 2079-4991, Vol: 11, Issue: 8
2021
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Article Description

To date, the fabrication of advanced anode materials that can accommodate both Na and K storage is still very challenging. Herein, we developed a facile solvothermal and subsequent annealing process to synthesize SnS2/RGO composite, in which SnS2 nanosheets are bonded on RGO, and investigated their potential as anodes for Na and K storage. When used as an anode in SIBs, the as-prepared SnS2/RGO displays preeminent performance (581 mAh g at 0.5 A g after 80 cycles), which is a significant improvement compared with pure SnS2. More encouragingly, SnS2/RGO also exhibits good cycling stability (130 mAh g at 0.3 A g after 300 cycles) and excellent rate capability (520.8 mAh g at 0.05 A g and 281.4 mAh g at 0.5 A g) when used as anode for PIBs. The well-engineered structure not only guarantees the fast electrode reaction kinetics, but also ensures superior pseudocapacitance contribution during repeated cycles, which has been proved by kinetic analysis.

Bibliographic Details

Wu, Leqiang; Shao, Hengjia; Yang, Chen; Feng, Xiangmin; Han, Linxuan; Zhou, Yanli; Du, Wei; Sun, Xueqin; Xu, Zhijun; Zhang, Xiaoyu; Jiang, Fuyi; Dong, Caifu

MDPI AG

Chemical Engineering; Materials Science

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