The proton conduction and hydrogen permeation characteristic of Sr(Ce 0.6 Zr 0.4 ) 0.85 Y 0.15 O 3-δ ceramic separation membrane

I. Ming Hung*, Yen Juin Chiang, Jason Shian Ching Jang, Jing Chie Lin, Sheng Wei Lee, Jeng-Kuei Chang, Chi Shiung Hsi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

In this study, proton-conducting Sr(Ce 0.6 Zr 0.4 ) 0.85 Y 0.15 O 3-δ perovskite is synthesized using the citrate-ethylenediaminetetraacetic acid (EDTA) complexing method. The crystal structure, sintering behavior, coefficient of thermal expansion (CTE), electrical conductivity, electrochemical performance and hydrogen permeation of the Sr(Ce 0.6 Zr 0.4 ) 0.85 Y 0.15 O 3-δ is determined for various atmospheres and partial pressures of water. Sr(Ce 0.6 Zr 0.4 ) 0.85 Y 0.15 O 3-δ is extremely dense after sintering at 1450°C for 6h. The structure of the Sr(Ce 0.6 Zr 0.4 ) 0.85 Y 0.15 O 3-δ does not change after heat treatment in a hydrogen atmosphere at a partial pressure of water of 4.93×10 -2 atm. The CTE of the Sr(Ce 0.6 Zr 0.4 ) 0.85 Y 0.15 O 3-δ at temperature of 100-900°C is 11.4×10 -6 K -1 . The electrical conductivity of the sample is 0.012Scm -1 at 900°C. The hydrogen permeation flux increases from 0.1 to 0.184mmolmin -1 cm -2 as the temperature increases from 500°C to 800°C.

Original languageEnglish
Pages (from-to)163-170
Number of pages8
JournalJournal of the European Ceramic Society
Volume35
Issue number1
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Ceramics
  • Conductivity
  • Hydrogen membrane
  • Perovskites
  • Phase stability

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