Unraveling and leveraging in situ surface amorphization for enhanced hydrogen evolution reaction in alkaline media

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Qiang Fu
  • Lok Wing Wong
  • Fangyuan Zheng
  • Xiaodong Zheng
  • Chi Shing Tsang
  • Ka Hei Lai
  • Qingming Deng
  • Jiong Zhao

Detail(s)

Original languageEnglish
Article number6462
Journal / PublicationNature Communications
Volume14
Online published13 Oct 2023
Publication statusPublished - 2023

Link(s)

Abstract

Surface amorphization provides electrocatalysts with more active sites and flexibility. However, there is still a lack of experimental observations and mechanistic explanations for the in situ amorphization process and its crucial role. Herein, we propose the concept that by in situ reconstructed amorphous surface, metal phosphorus trichalcogenides could intrinsically offer better catalytic performance for the alkaline hydrogen production. Trace Ru (0.81 wt.%) is doped into NiPS3 nanosheets for alkaline hydrogen production. Using in situ electrochemical transmission electron microscopy technique, we confirmed the amorphization process occurred on the edges of NiPS3 is critical for achieving superior activity. Comprehensive characterizations and theoretical calculations reveal Ru primarily stabilized at edges of NiPS3 through in situ formed amorphous layer containing bridging S22− species, which can effectively reduce the reaction energy barrier. This work emphasizes the critical role of in situ formed active layer and suggests its potential for optimizing catalytic activities of electrocatalysts. © 2023, The Author(s).

Research Area(s)

Citation Format(s)

Unraveling and leveraging in situ surface amorphization for enhanced hydrogen evolution reaction in alkaline media. / Fu, Qiang; Wong, Lok Wing; Zheng, Fangyuan et al.
In: Nature Communications, Vol. 14, 6462, 2023.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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