Paul's research interests cover a broad range of electrochemical engineering themes with a particular interest in the characterisation and understanding of materials for batteries, fuel cells and other zero carbon energy applications. He was a founding investigator of The Faraday Institution, the UK’s independent institute for electrochemical energy storage research, where he leads the LiSTAR and Safebatt research programmes. He is a major user of synchrotron and neutron facilities, and founded the UK STFC Global Challenge network in Batteries and Electrochemical Devices.