Cited by 713Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsHydrogen Storage and Materials

Morphology and surface chemistry engineering toward PH-universal catalysts for hydrogen evolution at high current density

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Luo, Yuting, Tang, Lei, Khan, Usman, Yu, Qiangmin, Cheng, Hui-Ming, Zou, Xiaolong, Liu, Bilu·2019·Nature Communications

Abstract

Large-scale implementation of electrochemical hydrogen production requires several fundamental issues to be solved, including understanding the mechanism and developing inexpensive electrocatalysts that work well at high current densities. Here we address these challenges by exploring the roles of morphology and surface chemistry, and develop inexpensive and efficient electrocatalysts for hydrogen evolution. Three model electrocatalysts are flat platinum foil, molybdenum disulfide microspheres, and molybdenum disulfide microspheres modified by molybdenum carbide nanoparticles. The last catalyst is highly active for hydrogen evolution independent of pH, with low overpotentials of 227 mV in acidic medium and 220 mV in alkaline medium at a high current density of 1000 mA cm−2, because of enhanced transfer of mass (reactants and hydrogen bubbles) and fast reaction kinetics due to surface oxygen groups formed on molybdenum carbide during hydrogen evolution. Our work may guide rational design of electrocatalysts that work well at high current densities.

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  • Both HER and OER must be obtained at considerably high overpotentials to achieve overall water splitting.

    “However, both”

    From Phosphorus doped nickel-molybdenum aerogel for efficient overall water splitting (2021) · cites this paper as [4]

    The Introduction (page unavailable) says that water splitting is hindered by slow kinetics and that several HER catalysts have large overpotentials, particularly at high current densities. It does not establish that both HER and OER require considerably high overpotentials for overall water splitting; the passages address HER, not OER. (LLM, conf=0.86)

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Authors
Luo, Y., Tang, L., Khan, U., Yu, Q., Cheng, H.-M., Zou, X., & Liu, B.
Affiliations
  • Tsinghua–Berkeley Shenzhen Institute (CN)
  • Chinese Academy of Sciences (CN)
Corresponding author
  • Zou, Xiaolong
  • Liu, Bilu
Venue
Nature Communications
Published
2019-01-17
Volume
10
Issue
1
Pages
269-269
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2915424365
Cited by
713
References
53
Citations by year
2026: 49 · 2025: 92 · 2024: 133 · 2023: 117 · 2022: 120 · 2021: 92 · 2020: 67 · 2019: 43
FWCI
17.13
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (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)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Natural Science Foundation of China (51722206, JCYJ20170307140956657)
  • Development and Reform Commission of Shenzhen Municipality (JCYJ20170307140956657, 51722206)
  • Shenzhen Fundamental Research Program (JCYJ20170307140956657)
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
  • Physical Sciences › Materials Science › Materials Chemistry › Hydrogen Storage and Materials
Keywords
hydrogen evolution reaction, electrocatalysts, molybdenum carbide nanoparticles, catalyst morphology, surface chemistry, high current density, mass transfer, surface oxygen groups, platinum foil, acidic and alkaline media, electrochemical hydrogen production

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