Influence of microstructure on electrical properties in BaZr0.5In0.5O3-δ proton conductor

摘要：

Two different preparative routes, one a wet chemical route (WCR) and the other a traditional solid state sintering route (SSR), have been used to synthesise the oxygen deficient perovskite BaZr0.5In0.5O3-δ. Analysis of X-ray powder diffraction data showed that both phases adopt cubic crystal structures. Environmental scanning electron microscope (ESEM) images showed that a smaller grain size was obtained for the WCR sample. Dynamic thermo-gravimetric analysis indicated significant mass losses for hydrated samples compared to their respective dried samples. Proton conductivity was investigated for hydrated and as-prepared phases under dry and wet atmospheres, respectively. The hydrated sample prepared via the solid state sintering route displayed a higher proton conductivity under dry conditions, reflecting the presence of fewer grain boundaries in this sample.

关键词： X-ray diffraction ESEM Proton conductor Perovskite Grain boundaries

作者: Istaq Ahmed Sten-G.Eriksson Elisabet Ahlberg Christopher S.Knee

作者单位: Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96, G(o Department of Chemistry, Goteborg University, SE-412 96 G(o)teborg, Sweden

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 1155-1160

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）