Electrochemical investigation of electrocatalysts for the oxygen evolution reaction in PEM water electrolyzers

Shidong Song, Huamin Zhang, Xiaoping Ma, Zhigang Shao, R.T. Baker, Baolian Yi

Research output: Contribution to journalArticlepeer-review

263 Citations (Scopus)

Abstract

To develop the proton exchange membrane water electrolyzer (PEMWE) with satisfactory performance and durability for application in a regenerative fuel cell (RFC) system, anode electrocatalysts of Ir, Ru and their oxides were prepared and incorporated into the catalyst coated membranes (CCM) of the PEMWE. Repetitive cyclic voltammetry of the Nafion bonded electrodes, steady state polarization curves and stability testing of the single PEMWE cells were performed to investigate the performance and stability of these electrocatalysts. The structure and specific Surface areas of the electrocatalysts were characterized by XRD and BET. IrO2 exhibited a slightly lower performance but a markedly higher stability than the other electrocatalysts. By modifying the preparation process via a colloidal iridium hydroxide hydrate precursor, which permitted a lower heat treatment temperature, its performance was enhanced, corresponding to a terminal voltage of 1.63 V at 1 A/cm(2). (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)4955-4961
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume33
Issue number19
DOIs
Publication statusPublished - Oct 2008

Keywords

  • Water electrolysis
  • Regenerative fuel cell
  • Oxygen evolution reaction
  • Anode electrocatalyst
  • Catalyst coated membrane
  • IRIDIUM DIOXIDE ELECTRODES
  • COATED TITANIUM ELECTRODES
  • SOLID POLYMER ELECTROLYTE
  • REGENERATIVE FUEL-CELL
  • SURFACE CHARACTERIZATION
  • IRO2-TA2O5 ANODES
  • COATING THICKNESS
  • ACIDIC-SOLUTION
  • TERNARY OXIDES
  • MEMBRANE

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