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Nickel-based N/S-dual doped graphene/carbon nanotubes electrocatalyst for oxygen evolution

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(1), pp.89~97
  • DOI : 10.1007/s42823-022-00405-y
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 16, 2021
  • Accepted : March 22, 2022
  • Published : February 1, 2023

Jiang Jin-Chi 1 Liu Jiamin 2 Piao Yingai 3 Zhang Mei-Shan 1 Meng Long-Yue 1

1Department of Chemistry, College of Science, Yanbian University
2Department of Chemical Engineering, College of Engineering, Yanbian University
3Testing and Analysis Centers, Yanbian University

Accredited

ABSTRACT

Hydrogen energy is a promising source of renewable and clean energy for various industries, such as chemical, automobile, and energy industries. Electrolysis of water is one of the basic methods for the production of hydrogen energy. However, the high overpotential of the oxygen evolution reaction (OER) in water electrolysis has hindered the effective production of hydrogen using this method. Thus, the development of high-efficiency non-precious metal-based electrocatalysts for OER is extremely significant. In this study, we adopted a one-step hydrothermal method to fabricate Ni-based catalysts with N/S-dual doped graphene oxide/carbon nanotube (GO/CNT) supports using thiourea (CH4N2S) and urea as the S source and the N source. It was observed that the amount of thiourea utilized in the synthesis of the catalyst affected the morphology, composition, and the electrochemical properties of the catalyst. For a GO/CNT-to-thiourea mass ratio of 1:10, the catalyst exhibited the highest activity, where the OER overpotential was 320 mV at a current density of 10 mA/cm2. This was attributed to the high specific surface area, high conductivity, and fast electron transport channels of the N/S-dual doped GO/CNT composite. Furthermore, sulfurization of the Ni particles to form nickel sulfide played a significant role in enhancing the catalytic performance.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (10) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (15) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2025-01-01)

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