Study on the construction of cobweb-like NiS/NiS2 nanowire for enhanced hydrogen evolution reaction in alkaline electrolyte

Xiaoyan Wang; Songqing Hu

doi:10.1117/12.3015330

6 February 2024 Study on the construction of cobweb-like NiS/NiS₂ nanowire for enhanced hydrogen evolution reaction in alkaline electrolyte

Xiaoyan Wang, Songqing Hu

Author Affiliations +

Proceedings Volume 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023); 129790P (2024) https://doi.org/10.1117/12.3015330
Event: 9th International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 2023, Guilin, China

Abstract

The development of non-noble metal-based electrocatalysts is the key to effectively reduce the overpotential of hydrogen evolution reaction (HER). It is a promising method to construct a multi-component system with adjustable structure to enhance the performance of electrocatalysis. Therefore, one-dimensional (1D) cobweb-like NiS/NiS₂ nanowires prepared by a one-step coprecipitation method, and they are used as efficient HER catalysts. The 1D structure of the NiS/NiS₂ nanowires effectively exposed more active sites, and the synergies between the two components optimized the interfacial electronic structure. Thereinto, NiS/NiS₂ possesses the low overpotential of 108 mV at the current densities of 10 mA cm^-2 for HER, and there is no significant decay for NiS/NiS₂ during the continuous chronoamperometric measurement for 20 hours, which is superior to those of single-component NiS and NiS₂. This work starts a new way for the design of multi-component chalcogenide catalysts for HER.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaoyan Wang and Songqing Hu "Study on the construction of cobweb-like NiS/NiS₂ nanowire for enhanced hydrogen evolution reaction in alkaline electrolyte", Proc. SPIE 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 129790P (6 February 2024); https://doi.org/10.1117/12.3015330

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