Nickel–iron hydroxide oxygen evolution electrocatalysts prepared by a simple chemical bath deposition method

Ji Eun Kim, Ki kwang Bae, Chu sik Park, Seong uk Jeong, Jong won Kim, Jaekyung Yoon, Hyekyung Cho, Ki Bong Lee, Kyoung Soo Kang

Research output: Contribution to journalArticlepeer-review

Abstract

The oxygen evolution reaction (OER), which is an important process in water electrolysis, requires a high overpotential. There is a need for cheaper and more efficient catalysts for this process. Ni hydroxide-based OER catalysts are promising, but further research is required. This paper describes the use of a simple chemical bath deposition method for the preparation and characterization of three-dimensional microstructured Ni–Fe hydroxide electrochemical OER catalysts on nickel plates. The influences of the Fe ion content and pH of the chemical bath on the performance of the catalysts are addressed, allowing the preparation of an efficient and highly active catalyst. Thus, this study represents a stepping stone toward further developments in the field of water electrolysis.

Original languageEnglish
Pages (from-to)20313-20324
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number39
DOIs
Publication statusPublished - 2021 Jun 17

Keywords

  • Chemical bath deposition
  • Layered double hydroxide
  • Ni–Fe hydroxide
  • Oxygen evolution reaction
  • Water electrolysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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