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Cited by 1,257Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsIron oxide chemistry and applications

Bifunctional non-noble metal oxide nanoparticle electrocatalysts through lithium-induced conversion for overall water splitting

Open access
Wang, Haotian, Lee, Hyun-Wook, Deng, Yong, Lu, Zhiyi, Hsu, Po-Chun, Liu, Yayuan, Lin, Dingchang, Cui, Yi·2015·Nature Communications
DOI 10.1038/ncomms8261PMC PMC4557299
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Abstract

Developing earth-abundant, active and stable electrocatalysts which operate in the same electrolyte for water splitting, including oxygen evolution reaction and hydrogen evolution reaction, is important for many renewable energy conversion processes. Here we demonstrate the improvement of catalytic activity when transition metal oxide (iron, cobalt, nickel oxides and their mixed oxides) nanoparticles (∼20 nm) are electrochemically transformed into ultra-small diameter (2–5 nm) nanoparticles through lithium-induced conversion reactions. Different from most traditional chemical syntheses, this method maintains excellent electrical interconnection among nanoparticles and results in large surface areas and many catalytically active sites. We demonstrate that lithium-induced ultra-small NiFeO x nanoparticles are active bifunctional catalysts exhibiting high activity and stability for overall water splitting in base. We achieve 10 mA cm −2 water-splitting current at only 1.51 V for over 200 h without degradation in a two-electrode configuration and 1 M KOH, better than the combination of iridium and platinum as benchmark catalysts.

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  • Bimetallic oxides exhibit high activity toward the OER in alkaline media.

    “Generally, bimetallic oxides exhibit high activity toward the OER in alkaline media.8,18–20”

    From Tunable CoFe-based active sites on 3D heteroatom doped graphene aerogel electrocatalysts <i>via</i> annealing gas regulation for efficient water splitting (2018) · cites this paper as [18]

    The Results section (page unavailable) reports high OER activity for lithium-cycled NiFeOx, a mixed-metal oxide, in alkaline KOH. It does not establish that bimetallic oxides generally exhibit high OER activity; the reported performance is for a specifically prepared catalyst. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

  • The operation voltage of the Au-Rh-aerogel-based electrolyzer is smaller than for most previously reported electrocatalysts in alkaline medium (1.51-1.81 V).

    “The obtained operation voltage of the Au–Rh-aerogel-based electrolyzer is also smaller than for most previously reported electrocatalysts in alkaline medium (1.51–1.81 V).[35–38]”

    From Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis (2020) · cites this paper as [36]

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Cites

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Authors
Wang, H., Lee, H.-W., Deng, Y., Lu, Z., Hsu, P.-C., Liu, Y., Lin, D., & Cui, Y.
Affiliations
  • Stanford University (US)
  • SLAC National Accelerator Laboratory (US)
Corresponding author
Cui, Yi
ORCID
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2015-06-23
Volume
6
Issue
1
Pages
7261-7261
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/ncomms8261
PMC
PMC4557299
OpenAlex
W4240631198
Cited by
1,257
References
2
Citations by year
2026: 30 · 2025: 71 · 2024: 82 · 2023: 88 · 2022: 115 · 2021: 140 · 2020: 165 · 2019: 146 · 2018: 158 · 2017: 146 · 2016: 95 · 2015: 19
FWCI
41.25
Type
journal article
Language
en
Open access
Licence
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Scholarworks@UNIST (Ulsan National Institute of Science and Technology) (submittedVersion, cc-by)
Funders
  • U.S. Department of Energy (DE-AC02-76-SFO0515, DE-AC-02-76, DE-AC02-)
  • Basic Energy Sciences (DE-AC02, DEAC02-76-SFO0515)
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 › Energy › Renewable Energy, Sustainability and the Environment › Iron oxide chemistry and applications
Keywords
bifunctional electrocatalysts, overall water splitting, transition metal oxide nanoparticles, oxygen evolution reaction, hydrogen evolution reaction, electrochemical conversion, earth-abundant catalysts, catalyst stability

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