Evaluation of stability and functionality of BaCe1-xlnxO3-s electrolyte in a wider range of indium concentration

• 作者: Aleksandar ALE?EVI? Aleksandar RADOJKOVI? Milan ?UNI? Aleksandra DAP?EVI? Sanja PERA? Zorica BRANKOVI? Goran BRANKOVI?
• 来源期刊: 先进陶瓷（英文版）
• 年，卷（期）: 2022,（3）
• 所属期刊栏目: Research Article
• 页码范围: 443-453
• 页数: 11页
• 语种: 英文

摘要

The properties of BaCei-xInxO3-δ(x=0.05,0.10,0.15,0.20,0.25,0.30,0.35,and 0.40)as proton conducting electrolyte are examined.The dense electrolyte is formed after sintering at 1300℃for 5 h in air.The samples with In content≥25 mol％contain In2O3 as a secondary phase.The highest total conductivity is around 5×10-3 S/cm for BaCe0.75In0.25O3-δ in the wet hydrogen atmosphere at 700℃.After exposure to pure CO2 atmosphere at 700℃for 5 h,the concentrations of at least 15 mol％In can completely suppress degradation of the electrolyte.The power density of Ni-BaCe0.75In0.25O3-δ/BaCe0.75In0.25O3-δ/LSCF-BaCe0.75In0.25O3-δ fuel cell tested in wet hydrogen atmosphere reaches 264 mW/cm2 at 700℃.This result is an indication of stability and functionality of this electrolyte and its versatility in respect to type of fuel and performing environment.