Nanocatalyst Design for Long-Term Operation of Proton/Anion Exchange Membrane Water Electrolysis

Haneul Jin, Bibi Ruqia, Yeji Park, Hee Jin Kim, Hyung Suk Oh, Sang Il Choi, Kwangyeol Lee

Research output: Contribution to journalReview articlepeer-review

9 Citations (Scopus)

Abstract

Long-term catalyst stability is essential for the commercialization of hydrogen generation by electrocatalytic water-splitting. Current research, however, mainly focuses on improving electrode activity of the hydrogen evolution reaction (HER) at the cathode and oxygen evolution reaction (OER) at the anode of electrolyzers, although the maintenance of long-term performance poses a bigger challenge. To shift the focus of research to the issue of catalyst stability, this review describes the mechanism of HER/OER catalyst degradation based on catalyst dissolution and agglomeration, and summarizes representative catalyst designs for achieving stable catalysts in long-term water electrolysis operation. Additionally, various strategies toward the improvement of HER/OER stability are evaluated, and potential effective guidelines for the design of stable catalysts are suggested.

Original languageEnglish
Article number2003188
JournalAdvanced Energy Materials
Volume11
Issue number4
DOIs
Publication statusPublished - 2021 Jan 27

Keywords

  • hydrogen evolution reaction
  • long-term stability
  • oxygen evolution reaction
  • water electrolysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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