Synergistic optimization promoted overall water splitting of CoSe@NiSe@MoS heterostructured composites

Herein, the preparation of CoSe@NiSe 2 @MoS 2 composites and the systematic investigation of their water splitting performance as a function of composition have been demonstrated. CoSe@NiSe 2 @MoS 2 -12 with the optimized composition exhibits a current density of 10 mA cm −2 at overpotentials of 81...

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Published in:Chemical communications (Cambridge, England) England), 2021-11, Vol.57 (93), p.12516-12519
Main Authors: Shen, Xiaoliang, Zhang, Mengna, Sudi, M. Shire, Zhao, Wei, Wang, Qi, Ren, JinShen, Zhao, Long, Wang, Aijian, Zhu, Weihua
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Summary:Herein, the preparation of CoSe@NiSe 2 @MoS 2 composites and the systematic investigation of their water splitting performance as a function of composition have been demonstrated. CoSe@NiSe 2 @MoS 2 -12 with the optimized composition exhibits a current density of 10 mA cm −2 at overpotentials of 81 and 170 mV for HER and OER in alkaline conditions, respectively. The overall water splitting device built using CoSe@NiSe 2 @MoS 2 -12 exhibited a low voltage of 1.48 V at 10 mA cm −2 due to the synergistic effects. The CoSe@NiSe 2 @MoS 2 composite exhibits an effective catalytic performance that is comparable to and/or better than many previously reported systems. The efficient electrocatalytic performance is ascribed to the synergetic effect between each component.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc05670k