Microstructure Analysis with Preparation Condition of Electrolyte Membrane for High Temperature Electrolysis

고온 수전해 전해질 막의 제막조건에 따른 미세구조 분석

  • Choi, Ho-Sang (Laboratory of Membrane Separation Process, Dept. of Chem. Eng., Kyungil University) ;
  • Son, Hyo-Seok (Laboratory of Membrane Separation Process, Dept. of Chem. Eng., Kyungil University) ;
  • Hwang, Gab-Jin (Thermochemical Hydrogen Research Group, Korea Institute of Energy Research) ;
  • Bae, Ki-Kwang (Laboratory of Membrane Separation Process, Dept. of Chem. Eng., Kyungil University)
  • 최호상 (경일대학교 생명화학공학과) ;
  • 손효석 (경일대학교 생명화학공학과) ;
  • 황갑진 (한국에너지기술연구원, 열화학수소연구단) ;
  • 배기광 (경일대학교 생명화학공학과)
  • Published : 2006.06.15

Abstract

This study was carried out to analyze the microstructure characteristics of electrolyte membrane through XRD, SEM and AC impedance measurement for using in high temperature steam electrolysis(HTE). It was investigated that thermal stability and electric characteristics by sintering condition using dry and wet process, and confirmed growth of particle and density change by sintering temperature. The sintering temperature and behavior had an effect on the relative density of the ceramic and the average grain size. The more amount of dispersant in organic compound increase, the more the density increased. But the binder was shown opposite phenomenon. It was analyzed that electrolyte resistance and electrical characteristics using AC impedance. The electrical properties of YSZ grain boundary changed with the sintering temperature.

Keywords

Hydrogen production;High Temperature Electrolysis;Electrolyte membrane;YSZ;Conductivity

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