Characterization and performance of fuel cells using BaCe 0.9Y 0.1O 0-δ electrolyte modified by an ion beam

Jae Hwan Kim, Shinji Nagata, Tatsuo Shikama, Chang Yong Kang

Research output: Contribution to journalArticle

Abstract

To investigate the effects of ion irradiation for improving the performance of a fuel cell, specimens were irradiated with Ar + ion beams at total fluences of 0, 1×1017 and 5×1017 ions/cm 2. After the ion-beam processing, measurements of the hydrogen concentration at the near-surface and of the electrical conductivity of the specimens, along with scanning electron microscopy observations, showed that the increase in oxygen vacancies formed due to irradiation contributed not only to an increase in hydrogen concentration on the surface but to an improvement in proton conductivity. These results suggest that this method is effective for improving the proton conductivity in proton-conducting Y-doped BaCeO 3-δ. Additionally, unit fuel cells were fabricated using the Y-doped BaCeO 3-δs irradiated by the ion beam with different fluences. It was observed from their I-V and I-P curves, that with the increase in Ar + fluence, both the current density and power density were improved.

Original languageEnglish
Pages (from-to)451-455
Number of pages5
JournalMetals and Materials International
Volume18
Issue number3
DOIs
Publication statusPublished - 2012 Jun 1

Keywords

  • Conductor
  • Fuel cell
  • Ion-beam processing
  • Power density
  • Scanning electron microscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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