Humidity-sensitive electrical conductivity in Ca12 Al14-x Six O32 Cl2+x (0≤x≤3.4) ceramics

Katsuro Hayashi, Hiroki Muramatsu, Satoru Matsuishi, Toshio Kamiya, Hideo Hosono

研究成果: Contribution to journalArticle査読

10 被引用数 (Scopus)

抄録

The effect of humidity on the electrical conductivity in porous and dense ceramics of Ca12 Al14-x Six O32 Cl2+x (x=0, 1.7, 3.4) with a mayenite structure was examined at room temperature. Surface ionic conductivity was enhanced by increasing the humidity. The sample with x=3.4, which had a porosity of 30%, exhibited the largest conductivity change of about 4 orders of magnitude over the relative humidity range of 10-90% at 25°C. The presence of Cl- ions on the surface most likely enhances the formation of hydronium ions which are responsible for proton transfer in physisorbed water layers.

本文言語英語
ページ(範囲)J11-J13
ジャーナルElectrochemical and Solid-State Letters
12
2
DOI
出版ステータス出版済み - 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 材料科学(全般)
  • 物理化学および理論化学
  • 電気化学
  • 電子工学および電気工学

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