Bruce Koel is a professor in the Department of Chemical and Biological Engineering. His research focuses on developing novel materials and processes for sustainable energy applications, with an emphasis on investigating and understanding chemical reactions at surfaces. Koel and his research group seek to develop new processes and catalysts for efficient synthesis of nanomaterials, chemical, and fuels. Some of his recent work has focused on using low-temperature plasma to recycle used lithium-ion batteries. He cofounded and advises a startup to commercialize the new technology called Princeton NuEnergy.

He is an associated faculty member of the Andlinger Center for Energy and the Environment, Department of Chemistry, Department of Mechanical and Aerospace Engineering, the High Meadows Environmental Institute, and the Princeton Institute for the Science and Technology of Materials. He is also a collaborator at the Princeton Plasma Physics Laboratory (PPPL) and oversees laboratories for surface science at PPPL.