Novel aspects of the conduction mechanisms of electrolytes containing tetrahedral moieties

E Kendrick, J Kendrick, A Orera, Pooja Panchmatia, M Saiful Islam, P R Slater

Research output: Contribution to journalArticle

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Abstract

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+xGe 6O26+3x/2, cuspidine-type La 4Ga2-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.
LanguageEnglish
Pages38-43
Number of pages6
JournalFuel Cells
Volume11
Issue number1
DOIs
StatusPublished - Feb 2011

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Vacancies
Electrolytes
Defects
Oxides
Ions
Protons
Fluorspar
Solid electrolytes
Apatite
Perovskite
Data structures
Negative ions

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Kendrick, E., Kendrick, J., Orera, A., Panchmatia, P., Islam, M. S., & Slater, P. R. (2011). Novel aspects of the conduction mechanisms of electrolytes containing tetrahedral moieties. DOI: 10.1002/fuce.201000044

Novel aspects of the conduction mechanisms of electrolytes containing tetrahedral moieties. / Kendrick, E; Kendrick, J; Orera, A; Panchmatia, Pooja; Islam, M Saiful; Slater, P R.

In: Fuel Cells, Vol. 11, No. 1, 02.2011, p. 38-43.

Research output: Contribution to journalArticle

Kendrick, E, Kendrick, J, Orera, A, Panchmatia, P, Islam, MS & Slater, PR 2011, 'Novel aspects of the conduction mechanisms of electrolytes containing tetrahedral moieties' Fuel Cells, vol. 11, no. 1, pp. 38-43. DOI: 10.1002/fuce.201000044
Kendrick E, Kendrick J, Orera A, Panchmatia P, Islam MS, Slater PR. Novel aspects of the conduction mechanisms of electrolytes containing tetrahedral moieties. Fuel Cells. 2011 Feb;11(1):38-43. Available from, DOI: 10.1002/fuce.201000044
Kendrick, E ; Kendrick, J ; Orera, A ; Panchmatia, Pooja ; Islam, M Saiful ; Slater, P R. / Novel aspects of the conduction mechanisms of electrolytes containing tetrahedral moieties. In: Fuel Cells. 2011 ; Vol. 11, No. 1. pp. 38-43
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