Anna’s EngD project is focused on solid state hydrogen storage materials for portable applications and is sponsored by industrial partner Cella Energy. The central material studied is a composite made from ammonia borane and polyethylene oxide. This energy storage solution offers significant weight advantages over battery storage, which is particularly attractive in the fields of aerospace and portable electronics. A working power system using this material has been demonstrated in a prototype UAV (see above). The challenge going forward is to understand both the science of how this unique material works and to streamline the engineering required for workable systems powered by it.