Cited by 405Electrocatalysts for Energy ConversionFuel Cells and Related MaterialsHydrogen Storage and Materials

The DOI matches its Crossref record; 74 of the 74 references it cites were found in a registry or an index.

Amorphous nickel hydroxide shell tailors local chemical environment on platinum surface for alkaline hydrogen evolution reaction

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Abstract

In analogy to natural enzymes, an elaborated design of catalytic systems with a specifically tailored local chemical environment could substantially improve reaction kinetics, effectively combat catalyst poisoning effect and boost catalyst lifetime under unfavourable reaction conditions. Here we report a unique design of 'Ni(OH)2-clothed Pt-tetrapods' with an amorphous Ni(OH)2 shell as a water dissociation catalyst and a proton conductive encapsulation layer to isolate the Pt core from bulk alkaline electrolyte while ensuring efficient proton supply to the active Pt sites. This design creates a favourable local chemical environment to result in acidic-like hydrogen evolution reaction kinetics with a lowest Tafel slope of 27 mV per decade and a record-high specific activity and mass activity in alkaline electrolyte. The proton conductive Ni(OH)2 shell can also effectively reject impurity ions and retard the Oswald ripening, endowing a high tolerance to solution impurities and exceptional long-term durability that is difficult to achieve in the naked Pt catalysts. The markedly improved hydrogen evolution reaction activity and durability in an alkaline medium promise an attractive catalyst material for alkaline water electrolysers and renewable chemical fuel generation.

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Crossref · 10.1038/s41563-023-01584-3

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Research works printed but not linked: 2

  1. Satyapal, S. US Department of Energy Hydrogen and Fuel Cells Program: 2019 Annual Merit Review and Peer Evaluation Report (National Renewable Energy Laboratory, 2020)
  2. Wang, X., Xu, C., Jaroniec, M., Zheng, Y. & Qiao, S.-Z. Anomalous hydrogen evolution behavior in high-pH environment induced by locally generated hydronium ions. Nat. Commun. 10, 4876 (2019).

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Items 401–405 of 405

Metadata

Authors
Wan, C., Zhang, Z., Dong, J., Xu, M., Pu, H., Baumann, D., Lin, Z., Wang, S., Huang, J., Shah, A. H., Pan, X., Hu, T., Alexandrova, A. N., Huang, Y., & Duan, X.
Affiliations
  • University of California, Los Angeles (US)
  • Chinese Academy of Sciences (CN)
  • University of California, Irvine (US)
  • California NanoSystems Institute (US)
Corresponding author
  • Alexandrova, Anastassia N.
  • Huang, Yu
  • Duan, Xiangfeng
Venue
Nature Materials
Published
2023-06-22
Volume
22
Issue
8
Pages
1022-1029
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W4381612401
Cited by
404
References
74
Citations by year
2026: 103 · 2025: 156 · 2024: 129 · 2023: 16
FWCI
19.31
Type
journal article
Language
en
Open access
Locations
  • Nature Materials (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
NSF | Directorate for Mathematical & Physical Sciences | Division of Chemistry (1800580)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
  • Physical Sciences › Materials Science › Materials Chemistry › Hydrogen Storage and Materials
Keywords
platinum catalysts, alkaline hydrogen evolution reaction, local chemical environment, proton conduction, water dissociation, catalyst stability, Ostwald ripening, alkaline water electrolysis, Tafel slope, mass activity

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