Fabrication of $SrZrO-3$-based Proton Conductors and Their Characterization

  • Yoo, Kwang-Soo (Department of Materials Science and Engineering, University of Seoul) ;
  • Byun, Douck-Young (Department of Materials Science and Engineering, University of Seoul)
  • Published : 2001.06.01

Abstract

The Y- or Yb-doped SrZrO$_3$ proton conductors were fabricated using the powders prepared by the self-propagating high-temperature synthesis (SHS). The electrical conductivity was evaluated from an a.c. impedance measurements. The conductivity of SrZr$_{0.92}$Yb$_{0.08}$O$_{3-\delta}$ was 1.8$\times$10$^{-3}$ Scm$^{-1}$ at $900^{\circ}C$ in dry air atmosphere and its activation energy was 0.50 eV. The conductivity in wet air was larger, compared with the dry air, and the activaton energy of SrZr$_{0.92}$Yb$_{0.08}$O$_{3-\delta}$ in wet air was 0.40 eV.

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