催化学报 ›› 2014, Vol. 35 ›› Issue (6): 891-895.DOI: 10.1016/S1872-2067(14)60127-3

• 研究论文 • 上一篇    下一篇

Electrocatalytic oxygen evolution reaction at a FeNi composite on a carbon nanofiber matrix in alkaline media

Xianghua Ana, Dongyoon Shina, Joey D. Ocona, Jae Kwang Leeb, Young-il Sonc, Jaeyoung Leea,b   

  1. a Electrochemical Reaction and Technology Laboratory (ERTL), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea;
    b Ertl Center for Electrochemistry and Catalysis, Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea;
    c Future Environmental R&D Office, Korea Environmental Industry & Technology Institute (KEITI), Seoul 122-706, South Korea
  • 收稿日期:2014-04-11 修回日期:2014-04-28 出版日期:2014-05-30 发布日期:2014-06-03
  • 通讯作者: Jaeyoung Lee

Electrocatalytic oxygen evolution reaction at a FeNi composite on a carbon nanofiber matrix in alkaline media

Xianghua Ana, Dongyoon Shina, Joey D. Ocona, Jae Kwang Leeb, Young-il Sonc, Jaeyoung Leea,b   

  1. a Electrochemical Reaction and Technology Laboratory (ERTL), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea;
    b Ertl Center for Electrochemistry and Catalysis, Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea;
    c Future Environmental R&D Office, Korea Environmental Industry & Technology Institute (KEITI), Seoul 122-706, South Korea
  • Received:2014-04-11 Revised:2014-04-28 Online:2014-05-30 Published:2014-06-03

摘要:

Non-noble metals such as Fe and Ni have comparable electrocatalytic activity and stability to that of Ir and Ru in an oxygen evolution reaction (OER). In this study, we synthesized carbon nanofibers with embedded FeNi composites (FeNi-CNFs) as OER electrocatalysts by a facile route comprising electrospinning and the pyrolysis of a mixture of metal precursors and a polymer solution. FeNi-CNFs demonstrated catalytic activity and stability that were better than that of 20 wt% Ir on Vulcan carbon black in oxidizing water to produce oxygen in an alkaline media. Physicochemical and electrochemical characterization revealed that Fe and Ni had synergistic roles that enhanced OER activity by the uniform formation and widening of pores in the carbon structure, while the CNF matrix also contributed to the increased stability of the catalyst.

关键词: Oxygen evolution reaction, Carbon nanofiber, Iron, Nickel, Alkaline media

Abstract:

Non-noble metals such as Fe and Ni have comparable electrocatalytic activity and stability to that of Ir and Ru in an oxygen evolution reaction (OER). In this study, we synthesized carbon nanofibers with embedded FeNi composites (FeNi-CNFs) as OER electrocatalysts by a facile route comprising electrospinning and the pyrolysis of a mixture of metal precursors and a polymer solution. FeNi-CNFs demonstrated catalytic activity and stability that were better than that of 20 wt% Ir on Vulcan carbon black in oxidizing water to produce oxygen in an alkaline media. Physicochemical and electrochemical characterization revealed that Fe and Ni had synergistic roles that enhanced OER activity by the uniform formation and widening of pores in the carbon structure, while the CNF matrix also contributed to the increased stability of the catalyst.

Key words: Oxygen evolution reaction, Carbon nanofiber, Iron, Nickel, Alkaline media