DIMENSION is a 3-year research project funded by the Mercator Research Center Ruhr (MERCUR) on new functional materials for energy conversion. With the ongoing transformation of the energy system to green electricity, electrochemical processes are gaining central importance. The materials that have been used to date, for example for electrolysers and fuel cells, are expensive and exhausted. Scientists at University of Duisburg-Essen, Ruhr-Universität Bochum, and other institutions have therefore set themselves the goal of developing new and high-performance electrochemical materials.