Dataset title: Data of iron and cobalt phthalocyanine embedded electrospun carbon nanofiber-based catalysts for anion exchange membrane fuel cell cathode Kaur Muuli, Andri Sokka, Marek Mooste, Jaana Lilloja, Viktoria Gudkova, Maike Käärik, Markus Otsus, Arvo Kikas, Vambola Kisand, Aile Tamm, Jaan Leis, Andres Krumme, Steven Holdcroft, José H. Zagal, 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 phthalocyanine embedded electrospun carbon nanofiber-based catalysts for anion exchange membrane fuel cell cathode" Journal of Catalysis 422, 117-130 (https://doi.org/10.1016/j.jcat.2023.04.008) The electrochemical characterisation data, which was measured in University of Tartu Institute of Chemistry, is for Figures 1, 2, 4, 5, 6, 11 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 Figure 5a, the electrochemical data the measured currents have been converted from current (A) to current (mA) or current (ĀµA). For Figure 6b, the electrochemical data the time has been converted from time (s) to time (h). For Figures 1, 2, 4, 6, 11 electrochemical data the measured currents have been converted from current (A) to current densities (mA/cm2). For Figures 1, 2, 4, 5, 6, the background currents, measured in Ar-saturated solution, have been subtracted, in addition to conversion to current (mA) or current densities (mA/cm2). 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, PRG4 and PRG1509) 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"). J.H.Z. is thankful to Anid Project Anillo ACT 192173 and grant Fondecyt 1221798.