High performance of electroless-plated platinum electrode for electrochemical hydrogen pumps using strontium-zirconate-based proton conductors

Takaaki Sakai, Hiroshige Matsumoto, Takao Kudo, Reiri Yamamoto, Eiki Niwa, Sachio Okada, Shinichi Hashimoto, Kazuya Sasaki, Tatsumi Ishihara

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The performance of an electroless-plated platinum electrode for electrochemical hydrogen pumps was investigated using SrZr0.9Y0.1O3-α (10Y-SZO) and SrZr0.5Ce0.4Y0.1O3-α (10Y-SZCO) as proton-conducting electrolytes. The plated electrodes using these electrolytes showed quite low overpotentials, resulting in high performance of the hydrogen pumps. The high electrode performance is interpreted from the viewpoint of the three-phase boundary (TPB) length: the plated electrode has a larger TPB length per unit area than that of the pasted electrode. The difference between 10Y-SZO and 10Y-SZCO in ability to match with platinum electrodes is also discussed, and the possibility that the TPB width of 10Y-SZCO with platinum is larger than that of 10Y-SZO is suggested.

Original languageEnglish
Pages (from-to)8172-8177
Number of pages6
JournalElectrochimica Acta
Volume53
Issue number28
DOIs
Publication statusPublished - 2008 Nov 30

Keywords

  • Electroless plating
  • Hydrogen pump
  • Proton conductor
  • Strontium-zirconate
  • Three-phase boundary

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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    Sakai, T., Matsumoto, H., Kudo, T., Yamamoto, R., Niwa, E., Okada, S., Hashimoto, S., Sasaki, K., & Ishihara, T. (2008). High performance of electroless-plated platinum electrode for electrochemical hydrogen pumps using strontium-zirconate-based proton conductors. Electrochimica Acta, 53(28), 8172-8177. https://doi.org/10.1016/j.electacta.2008.06.013