Cited by 190Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsMetalloenzymes and iron-sulfur proteins

The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.

In Situ Phase Transformation on Nickel-Based Selenides for Enhanced Hydrogen Evolution Reaction in Alkaline Medium

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Zhai, Lingling, Benedict Lo, Tsz Woon, Xu, Zheng-Long, Potter, Jonathan, Mo, Jiaying, Guo, Xuyun, Tang, Chiu Chung, Edman Tsang, Shik Chi, Lau, Shu Ping·2020·ACS Energy Letters

Abstract

Identification of the active species in electrocatalysts toward hydrogen evolution reaction (HER) is of great significance for the development of the catalytic industry; however, it is still the subject of considerable controversy. Herein, we applied operando synchrotron X-ray powder diffraction (SXRD) in the NiSe 2 electrocatalyst system, and an in situ phase transformation from cubic NiSe 2 to hexagonal NiSe was revealed. The NiSe phase showed an enhanced catalytic activity. Operando Raman spectroscopy verified the decomposition of NiSe 2 during HER. Theoretical calculations suggested that the charge transfers from the Se site to Ni site during this evolution process, leading to an increased conductivity and a shifting up of d -band center, which is attributed to the enhanced activity. The generated NiSe phase acts as the “real” active species. Our work unravels the underlying phase transition of the electrocatalyst on reductive conditions in alkaline medium and highlights the significance of identifying the intrinsic active sites under realistic reaction conditions.

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Crossref · 10.1021/acsenergylett.0c01385

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  • Carbon fabric (CF) has low cost and high specific surface area but suffers from relatively low conductivity.

    “By contrast, the carbon fabric (CF), featuring a low cost and high specific surface area, suffers from relatively low conductivity.7,23,24”

    From An energy-saving support made of silver nanowire aerogel for hydrogen evolution reaction (2023) · cites this paper as [24]

    In section 3 (page unavailable), the paper reports negligible hydrogen-evolution activity for bare carbon paper, but that does not establish its conductivity. Searches for carbon fabric, cost, surface area, and conductivity found no passage stating the claimed properties of carbon fabric; the paper's conductivity discussion concerns nickel selenides instead. (LLM, conf=0.76)

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Metadata

Authors
Zhai, L., Benedict Lo, T. W., Xu, Z.-L., Potter, J., Mo, J., Guo, X., Tang, C. C., Edman Tsang, S. C., & Lau, S. P.
Affiliations
  • Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
  • State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
  • Hong Kong Polytechnic University (HK)
  • Diamond Light Source (GB)
  • University of Oxford (GB)
  • The Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, U.K.
Corresponding author
Lau, Shu Ping
Venue
ACS Energy Letters
Published
2020-07-01
Volume
5
Issue
8
Pages
2483-2491
ISSN
2380-8195 (ISSN-L)
OpenAlex
W3039024650
Cited by
188
References
44
Citations by year
2026: 19 · 2025: 21 · 2024: 30 · 2023: 38 · 2022: 46 · 2021: 32 · 2020: 2
FWCI
5.83
Type
journal article
Language
en
Open access
Locations
  • ACS Energy Letters (publishedVersion)
  • PolyU Institutional Research Archive (Hong Kong Polytechnic University) (submittedVersion)
Funders
  • Research Grants Council, University Grants Committee (PolyU 253009/18P)
  • Diamond Light Source (NT23230)
  • Hong Kong Polytechnic University (1-ZVGH)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Metalloenzymes and iron-sulfur proteins
Keywords
hydrogen evolution reaction, nickel selenide, NiSe2, NiSe, in situ phase transformation, electrocatalysts, alkaline solution, active site, operando Raman spectroscopy, charge transfer, d-band center, cubic-to-hexagonal phase transition

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