Interdisciplinary Studies to Characterise and Optimise Novel Apatite-Type Fast-Ion Conductors

Completed

Not Energy Related
Hydrogen and Fuel Cells(Fuel Cells)

Basic and strategic applied research

PHYSICAL SCIENCES AND MATHEMATICS (Chemistry)

Not Cross-cutting

Professor S Islam
Materials
University of Oxford

Standard

EPSRC

07 April 2008

06 April 2010

24 months

£164,877

Materials sciences

South East

Electronic Materials -- Physical Sciences

Professor S Islam, Materials, University of Oxford

The proposed research will build upon previous success with a combined programme of experimental and computational studies of novel apatite-type ionic conductors, which are attracting considerable worldwide attention. Contrary to the traditional fluorite and perovskite-type oxide ion conductors, which conduct via a vacancy mechanism, the current evidence indicates that these apatite systems conduct via oxide interstitials, as first reported in our initial modelling study of the Si-based systems. This interdisciplinary project will extend our internationally leading research through new adventurous studies of novel Ge-containing apatite materials, which offer higher ionic conductivities, but have been less widely investigated. Evaluation of their true potential therefore requires immediate study. This powerful combination of materials synthesis and characterisation (at Surrey), NMR (Warwick) and computer modelling (Bath) will provide deeper insight into these exciting materials forpotential technological applications (such as solid oxide fuel cells). Our considerable experience and past success in ion transport studies places us in a strong position to address key issues. In many instances, our project will be the first investigation of this type

13/08/07