Proton-electron mixed conduction properties in (Ce,Sr)PO4

A. Unemoto, N. Kitamura, K. Amezawa, T. Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


Mixed conductivity of proton and electron hole in (Ce,Sr)PO4 have been investigated by electrical conductivity and hydrogen permeation measurements. The partial conductivity contributions of proton and electron hole were separately evaluated from the total conductivity by assuming the defect model proposed in the preceding work. Hydrogen permeation measurements were demonstrated in order to check if and how much hydrogen permeates across the (Ce,Sr)PO4 membranes. As expected, hydrogen successfully permeated across the membranes. Use of surface catalysts was found to enhance the hydrogen permeation fluxes. This suggested that the contribution of the surface reaction to the hydrogen permeation process is remarkable. Hydrogen permeation flux through the (Ce,Sr)PO4 membranes is concluded to be essentially determined by the surface reaction process.

Original languageEnglish
Title of host publicationECS Transactions - Ionic and Mixed Conducting Ceramics 6 - 213th ECS Meeting
Number of pages9
Publication statusPublished - 2008 Dec 1
EventIonic and Mixed Conducting Ceramics 6 - 213th ECS Meeting - Phoenix, AZ, United States
Duration: 2008 May 182008 May 23

Publication series

NameECS Transactions
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737


OtherIonic and Mixed Conducting Ceramics 6 - 213th ECS Meeting
CountryUnited States
CityPhoenix, AZ

ASJC Scopus subject areas

  • Engineering(all)

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