Johan Hjelm

Johan Hjelm is a Professor and Head of Section at the Department of Energy Conversion and Storage, Technical University of Denmark. His research focuses on electrochemical materials for energy storage and conversion systems, including batteries, redox flow batteries, and solid oxide fuel cells. Key areas include electrode/electrolyte materials, membrane design, and molecular electrochemistry. He contributes to UN Sustainable Development Goals related to clean energy.

His expertise includes advanced diagnostics like electrochemical impedance spectroscopy and neutron radiography. Notable projects involve developing iron flow batteries for maritime applications and studying CO₂ reduction via metal-organic frameworks. He supervises multiple PhD students and leads collaborative research on energy storage materials.

• Advising: Supervises PhD students in electrochemical systems and energy storage
• Grants: Leads projects like FerroBAT (Iron Flow Batteries) and OrganicEC (electrosynthesis for sustainable chemicals)
• Labs/Teams: Active in DTU's Energy Conversion and Storage department, working with neutron imaging and material synthesis teams