Dataset title: Data of iron and cobalt containing electrospun carbon nanofibre-based cathode catalysts for anion exchange membrane fuel cell Andri Sokka, Marek Mooste, Maike Käärik, Viktoria Gudkova, Jekaterina Kozlova, Arvo Kikas, Vambola Kisand, Alexey Treshchalov, Aile Tamm, Päärn Paiste, Jaan Aruväli, Jaan Leis, Andres Krumme, Steven Holdcroft, Sara Cavaliere, Frédéric Jaouen, Kaido Tammeveski Contact information: Marek Mooste (marek.mooste@ut.ee), Kaido Tammeveski (kaido.tammeveski@ut.ee) Institute of Chemistry University of Tartu Ravila 14a 50411 Tartu Estonia This dataset contains the data presented in the figures of pulbished paper "Iron and cobalt containing electrospun carbon nanofibre-based cathode catalysts for anion exchange membrane fuel cell" International Journal of Hydrogen Energy 46, 31275-31287 (https://doi.org/10.1016/j.ijhydene.2021.07.025) The electrochemical characterisation data, which was measured in University of Tartu Institute of Chemistry, is for Figures 6, 7, 8, S3, S4, S5 and the nomenclature of the catalysts is the same as in the mentioned article. Data was collected using Autolab potentiostat/galvanostat PGSTAT30 (Metrohm Autolab, The Netherlands) controlled with NOVA version 2.1.4 software. The working electrode was glassy carbon electrode with diameter of 5 mm. Single cell AEMFC performance evaluation was conducted using Greenlight Fuel Cell Test Station (G40 Fuel cell system, Hydrogenics, Vancouver, Canada). Catalyst was pippeted on gas diffusion layers with the geometric area of 6.25 cm2 and active area of 5 cm2. For Figures 6, 7, S3, S4, S5 electrochemical data the measured currents have been converted from current (A) to current (mA). For Figure 8 electrochemical data the measured currents have been converted from current (A) to current densities (mA/cm2). For Figures 6, 7, S3, S4 the background currents, measured in Ar-saturated solution, have been subtracted, in addition to conversion to current (mA). Licence: This dataset is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Funding: The present study was financially supported by the Estonian Research Council (grants PRG723 and PRG4) and the M-ERA.Net project "C-MOF.cell"¯ (SLTKT20445). This research was also supported by the EU through the European Regional Development Fund (TK141 "Advanced materials and high-technology devices for energy recuperation systems"¯, TK134 "Emerging orders in quantum and nanomaterials"¯ and TK143 "Molecular cell engineering"). SC acknowledges IUF for financial support.