Performance of palladium electrode for electrochemical hydrogen pump using strontium-zirconate-based proton conductors

Takaaki Sakai, Hiroshige Matsumoto, Reiri Yamamoto, Takao Kudo, Sachio Okada, Masato Watanabe, Shin ichi Hashimoto, Hitoshi Takamura, Tatsumi Ishihara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An electrode design with no use of three-phase boundary was investigated using palladium electrode. The hydrogen evolution rate of the palladium electrode cell using SrZr0.9Y0.1O3 - α electrolyte followed Faraday's law up to 180 mA cm-2, and the anode and cathode overpotentials were significantly lower than those of a platinum electrode cell, suggesting that the palladium electrode is effective to improve the performance of the hydrogen-pumping cell using SrZrO3-based electrolyte. The rate-determining step (RDS) for electrode reaction was also investigated by changing the electrode morphology and hydrogen partial pressure, and it was suggested that the RDS of the anode is a reaction at electrode/electrolyte interface.

Original languageEnglish
Pages (from-to)665-670
Number of pages6
JournalIonics
Volume15
Issue number6
DOIs
Publication statusPublished - 2009 Oct 1

Keywords

  • Hydrogen pumps
  • Palladium electrode
  • Perovskite
  • Proton conductors
  • Strontium zirconate

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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  • Cite this

    Sakai, T., Matsumoto, H., Yamamoto, R., Kudo, T., Okada, S., Watanabe, M., Hashimoto, S. I., Takamura, H., & Ishihara, T. (2009). Performance of palladium electrode for electrochemical hydrogen pump using strontium-zirconate-based proton conductors. Ionics, 15(6), 665-670. https://doi.org/10.1007/s11581-009-0365-x