Stephen’s expertise is in the area of functional ceramics with applications in energy technologies, including electrolysis, fuel cells, batteries and permeation membranes. His work concerns understanding of the chemical and electrochemical processes occurring at surfaces and interfaces in these devices. His group use a range of advanced materials characterisation approaches to probe and correlate atomic scale transport with device function. Stephen collaborates widely with both industry and academia, holding a Visiting Professor position at the International Institute for Carbon Neutral Energy Research at Kyushu University, Japan. He serves on the advisory board for two centres for doctoral training as well as in strategic advisory roles for UKRI and Diamond Light Source. He previously led the Centre for Doctoral Training in Advanced Characterisation of Materials, a joint Imperial College/UCL centre partnering with Trinity College Dublin. The centre has successfully graduated over 100 PhD students in the last 8 years.