Professor Wijayantha has considerable expertise in low-carbon H2 technologies, electrochemical energy storage, energy materials and the circular chemical economy, having led industrial development of green H2 production in the UK that were then expanded to the US. He currently serves on two technical task groups of the International Energy Agency, and is part of the team behind HyDEX, a project aiming to accelerate innovation in H2 by supporting SMEs to develop the technologies and skills needed.

He graduated with BSc (Hon) and then received MPhil from the University of Ruhuna, Sri Lanka. He was awarded a PhD from the University of Bath, UK. After working in Bath University (as a PDRA) and then in industry, he moved to Loughborough University where he worked until April 2022 as a Professor of Physical Chemistry before moving to Cranfield University.

His current research interests include hydrogen in a whole system (production, storage, transport, distribution and end-use), electrochemical energy storage, energy materials and the circular chemical economy.