Enhanced electrochemical properties of Sm0.2Ce0.8O1.9 film for SOFC electrolyte fabricated by pulsed laser deposition

• 作者: Xi-Feng Ding Jing-Yu Shen Xiao-Jia Gao Jun Wang
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1294-1299
• 页数: 6页
• 语种: 英文

摘要

The cubic fluorite structure Sm0.2Ce0.8O1.9(SDC)film was fabricated by pulsed laser deposition(PLD)to be used as electrolyte for solid oxide fuel cells(SOFCs).The SDC target was prepared by co-precipitation process at a low sintering temperature(1,250℃)with a relative density of 97％.By inserting the PLD seed layer with the thickness of 3 μm,robust electrolyte films were successfully fabricated on La0.6Sr0.4Co0.2Fe0.8O3(LSCF)substrate.The SDC film growing at a substrate temperature of 650℃with thermal treatment and oxygen gas pressure of 10 Pa has high ionic conductivity of 0.075 S·cm-1 at 800℃.The results demonstrate that the dense SDC thin films prepared by PLD are suitable for low-temperature SOFC applications.