Multiscale modeling of the ionic conductivity of acceptor doped ceria
作者: Dries Van LaethemJohan DeconinckAnnick Hubin
作者单位: 1SURF Research Group, Department of Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
刊名: Journal of the European Ceramic Society, 2020, Vol.40 (6), pp.2404-2416
来源数据库: Elsevier Journal
DOI: 10.1016/j.jeurceramsoc.2019.12.055
关键词: Acceptor doped ceriaIonic conductivitySpace charge layersModelingMultiscale model
原始语种摘要: Abstract(#br)The ionic conductivity of acceptor doped ceria is strongly influenced by grain boundaries and interfaces, with most experiments showing a conductivity decrease in these regions. Classical models explain this observation by the formation of space charge layers, that are depleted of mobile ionic charge carriers. However, some experiments demonstrate an increase in ionic conductivity and recent models show that the space charge layers can also be enriched in mobile ionic species. Because of these discrepancies, it is still not certain whether nanocrystalline or thin film ceria can offer superior ionic conductivity or not. Recently, we have demonstrated by means of Monte Carlo simulations that the ionic conductivity in space charge layers can indeed exceed the bulk value. In this...
全文获取路径: Elsevier  (合作)
影响因子:2.36 (2012)

  • conductivity 传导率
  • ionic 离子的
  • ceria 二氧化铈
  • doped 掺杂(了)的掺了添加剂的
  • acceptor 收体
  • charge 电荷
  • modeling 制祝型
  • layers 
  • multiscale 通用换算
  • demonstrate 说明