Haijun Ruan is an Assistant Professor of battery science and technology at Coventry University and Visiting Researcher at Imperial College London, UK. He sits on the editorial board of the Journal of Power and Energy and the topical advisory panel of the World Electric Vehicle Journal. He was honored to be invited as the guest editor for several journals, such as Frontiers in Energy Research, Energies, and World Electric Vehicle Journal. He was a recipient of the National Scholarship and Zhixing Scholarship in China. His research interests include modeling, low-temperature heating, charging, diagnostics and lifetime control for lithium-ion batteries in electric vehicles and energy storage systems, as well as machine learning and fuel cells, with 31 papers published.