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Cited by 296Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCO2 Reduction Techniques and Catalysts

Pinpointing the axial ligand effect on platinum single-atom-catalyst towards efficient alkaline hydrogen evolution reaction

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Zhang, Tianyu, Jin, Jing, Chen, Junmei, Fang, Yingyan, Han, Xu, Chen, Jiayi, Li, Yaping, Wang, Yu +2 more·2022·Nature Communications
DOI 10.1038/s41467-022-34619-5PMC PMC9653394
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Abstract

Developing active single-atom-catalyst (SAC) for alkaline hydrogen evolution reaction (HER) is a promising solution to lower the green hydrogen cost. However, the correlations are not clear between the chemical environments around the active-sites and their desired catalytic activity. Here we study a group of SACs prepared by anchoring platinum atoms on NiFe-layered-double-hydroxide. While maintaining the homogeneity of the Pt-SACs, various axial ligands (−F, −Cl, −Br, −I, −OH) are employed via a facile irradiation-impregnation procedure, enabling us to discover definite chemical-environments/performance correlations. Owing to its high first-electron-affinity, chloride chelated Pt-SAC exhibits optimized bindings with hydrogen and hydroxide, which favor the sluggish water dissociation and further promote the alkaline HER. Specifically, it shows high mass-activity of 30.6 A mgPt −1 and turnover frequency of 30.3 H 2 s −1 at 100 mV overpotential, which are significantly higher than those of the state-of-the-art Pt-SACs and commercial Pt/C catalyst. Moreover, high energy efficiency of 80% is obtained for the alkaline water electrolyser assembled using the above catalyst under practical-relevant conditions.

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  • The doped nitrogen sites in the graphene sheets can prevent the aggregation and migration of PtNi nanoparticles on the graphene network and thus endow enhanced electrocatalytic stability.

    “which can prevent the aggregation and migration of PtNi nanoparticles on the graphene network and thus endow an enhanced electrocatalytic stability.[19]”

    From Highly Open Phosphorized PtNi Nanohexapod/N‐doped Graphene Aerogel for High‐Performance Alkaline Hydrogen Evolution (2025) · cites this paper as [19]

    The Results and discussion section describes isolated Pt atoms on NiFe-layered double hydroxide and reports that no nanoparticles were detected. Searches for PtNi nanoparticles, nitrogen-doped graphene, and prevention of aggregation or migration found no passage addressing the claimed stability mechanism. The paper's different catalyst does not establish that the proposed mechanism is false. (LLM, conf=0.75)

    Experimental — accuracy not yet measured

  • The NGA has an excellent anchoring effect that avoids the aggregation and Ostwald ripening of the PtNiNHs.

    “an excellent anchoring effect of the NGA to avoid the aggregation and Ostwald ripening of the PtNiNHs”

    From Highly Open Phosphorized PtNi Nanohexapod/N‐doped Graphene Aerogel for High‐Performance Alkaline Hydrogen Evolution (2025) · cites this paper as [19]

    The Results and discussion section describes Pt single atoms dispersed on NiFe-LDH nanosheets, not PtNiNHs anchored by NGA. Searches for NGA, PtNiNHs, aggregation, and Ostwald ripening found no passage addressing the claimed anchoring effect. Page numbers were not available in our copy. (LLM, conf=0.77)

    Experimental — accuracy not yet measured

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Authors
Zhang, T., Jin, J., Chen, J., Fang, Y., Han, X., Chen, J., Li, Y., Wang, Y., Liu, J., & Wang, L.
Affiliations
  • National University of Singapore (SG)
  • Chinese Academy of Sciences (CN)
  • State Key Laboratory of Chemical Resource Engineering (CN)
Corresponding author
  • Liu, Junfeng
  • Wang, Lei
ORCID
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2022-11-12
Volume
13
Issue
1
Pages
6875-6875
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/s41467-022-34619-5
PMC
PMC9653394
OpenAlex
W4309046866
Cited by
296
References
4
Citations by year
2026: 69 · 2025: 90 · 2024: 77 · 2023: 58 · 2022: 2
FWCI
10.22
Type
journal article
Language
en
Open access
Licence
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Research Foundation Singapore (NRF-NRFF13-2021-0007)
  • Agency for Science, Technology and Research (U2102d2002)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
Keywords
platinum single-atom catalysts, axial ligand effects, alkaline hydrogen evolution reaction, NiFe layered double hydroxide, water dissociation, hydrogen adsorption, green hydrogen production, alkaline water electrolysis, mass activity, energy efficiency

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