期刊
FUEL CELLS
卷 11, 期 1, 页码 38-43出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/fuce.201000044
关键词
Ionic Conductivity; Modelling; Properties; Solid Oxide Fuel Cell
资金
- Engineering and Physical Sciences Research Council [EP/F013248/1] Funding Source: researchfish
- EPSRC [EP/F013248/1] Funding Source: UKRI
Traditionally materials with the fluorite and perovskite structures have dominated the research in the area of oxide ion/proton conducting solid electrolytes. In such cases, the key defects are oxide ion vacancies, and conduction proceeds via a simple vacancy hopping mechanism. In recent years, there has been growing interest in alternative structure types, many of which contain tetrahedral moieties. For these new systems, an understanding of the accommodation of defects and the nature of the conduction mechanism is important for the optimisation of their conductivities, as well as to help target related structures that may display high oxide ion/proton conduction. Computer modelling studies on a range of systems containing tetrahedral moieties are presented, including apatite-type La9.33+ xGe6O26+ 3x/2, cuspidine-type La4Ga2-xTixO9+ x/2 and La1-xBa1+ xGaO4-x/2. The type of anion defect (vacancy or interstitial), their location and the factors affecting their incorporation are discussed. In addition, modelling data to help to understand their conduction mechanisms are presented, showing novel aspects including the important role of the tetrahedral moieties in the conduction processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据