Cited by 324Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsIron oxide chemistry and applications

Seamlessly Conductive 3D Nanoarchitecture of Core–Shell Ni‐Co Nanowire Network for Highly Efficient Oxygen Evolution

Bae, Seok‐Hu, Kim, Ji‐Eun, Randriamahazaka, Hyacinthe, Moon, Song‐Yi, Park, Jeong‐Young, Oh, Il‐Kwon·2017·Advanced Energy Materials

Abstract

Electrochemical splitting of water is an attractive way to produce hydrogen fuel as a clean and renewable energy source. However, a major challenge is to accelerate the sluggish kinetics of the anodic half‐cell reaction where oxygen evolution reaction (OER) takes place. Here, a seamlessly conductive 3D architecture is reported with a carbon‐shelled Ni‐Co nanowire network as a highly efficient OER electrocatalyst. Highly porous and granular Ni‐Co nanowires are first grown on a carbon fiber woven fabric utilizing a cost‐effective hydrothermal method and then conductive carbon shell is coated on the Ni‐Co nanowires via glucose carbonization and annealing processes. The conductive carbon layer surrounding the nanowires is introduced to provide a continuous pathway for facile electron transport throughout the whole of the integrated 3D catalyst. This 3D hierarchical structure provides several synergistic effects and beneficial functions including a large number of active sites, easy accessibility of water, fast electron transport, rapid release of oxygen gas, enhanced electrochemical durability, and stronger structural integrity, resulting in a remarkable OER activity that delivers an overpotential of 302 mV with a Tafel slope of 43.6 mV dec−1 at a current density of 10 mA cm−2 in an alkaline medium electrolyte (1 m KOH).

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Crossref · 10.1002/aenm.201601492

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44 of 44 references verified0 citation errors · 0 not checkable

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Authors
Bae, S., Kim, J., Randriamahazaka, H., Moon, S., Park, J., & Oh, I.
Affiliations
  • Korea Advanced Institute of Science and Technology (KR)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Oh, Il‐Kwon
Venue
Advanced Energy Materials
Publisher
Wiley
Published
2016-09-13
Volume
7
Issue
1
ISSN
  • 1614-6832 (ISSN-L)
  • 1614-6840
OpenAlex
W2518770721
Cited by
324
References
44
Citations by year
2026: 10 · 2025: 20 · 2024: 16 · 2023: 34 · 2022: 39 · 2021: 41 · 2020: 44 · 2019: 43 · 2018: 48 · 2017: 29
FWCI
10.86
Type
journal article
Language
en
Open access
closed
Locations
Advanced Energy Materials (publishedVersion)
Funders
National Research Foundation of Korea (2015R1A3A2028975)
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
oxygen evolution reaction, carbon shell, glucose carbonization, electrocatalysts, water splitting, hydrogen production, electron transport, alkaline electrolyte, Tafel slope, electrochemical durability

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