Graham’s area of research focuses specifically on the anodes of SOFCs. By capitalising on A-site deficiencies in titanate perovskites, dopant metals can be ex-solved onto the surface of the material as disperse nanoparticles. These nanoparticles are incredibly resistant to environmental conditions and can be catalysts.
As well as this, the material is mechanically and chemically tough and so is desirable for use in a SOFC. Investigations into the properties such as particle size, microstructure, porosity and synthesis conditions and the effects these have on the electrochemical, catalytic and mechanical properties are areas of interest. This is backed with an investigation into the lifetime and effects of environments on these materials, with a focus on the 3D microstructure as a function of operating time and conditions.