Enhancement on densification and crystallization of conducting La0.7Sr0.3VO3 perovskite anode derived from hydrothermal process

Chi Yang Liu, Shu Yi Tsai, Chung Ta Ni, Kuan Zong Fung, Chun Yao Cho

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

La1-xSr x VO3 (LSV)-based perovskite anodes are chemically and electrochemically stable under SOFC operating conditions. The main objective of this study was to investigate the feasibility of obtaining La0.7Sr0.3VO3 nanopowder from a novel hydrothermal method at relative low-temperature (∼200 °C). The particle size of hydrothermally-processed La0.7Sr0.3VO3 powder was as fine as 50 nm based on transmission electron microscopy observation. As a result, the better crystallization and densification was demonstrated from La0.7Sr0.3VO3 nanopowders synthesized via a hydrothermal route in comparison with a solid-state reaction (SSR) method. La0.7Sr0.3VO3 nanopowder shows a perovskite-type structure after heat-treated at 800 °C for 5 h in a reducing atmosphere (20% H2, 80% Ar). The hydrothermally treated La0.7Sr0.3VO3 showed high density of 96% that is better than the SSR process (86%). La0.7Sr0.3VO3 synthesized by the hydrothermal process shows metallic conducting behavior. Its conductivity reached 193 s cm-1 at 800 °C which is adequate for SOFC application.

原文English
文章編號SDDG03
期刊Japanese journal of applied physics
58
發行號SD
DOIs
出版狀態Published - 2019

All Science Journal Classification (ASJC) codes

  • 一般工程
  • 一般物理與天文學

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