10.26165/JUELICH-DATA/BLENZY Ritz, Lukas0000-0002-4332-3913(Forschungszentrum Jülich)Müller, Martin0000-0002-7521-8237(Forschungszentrum Jülich)Mechler, Anna K.0000-0002-0491-514X(Forschungszentrum Jülich)Lohmann-Richters, Felix0000-0003-3856-9318(Forschungszentrum Jülich) Jülich DATA 2026 The dataset provides the design data of the differential test cell (Diffcell”), as presented in the related publication “A differential alkaline electrolysis cell to study scaling effects” by Lukas Ritz, Martin Müller, Anna K. Mechler and Felix Lohmann-Richters. The data set also includes the measurement raw data from the paper. Lohmann-Richters, Felix(Forschungszentrum Jülich)