Digital.CSIC. Repositorio Institucional del CSIC

oai:digital.csic.es:10261/346325

Under a Creative Commons license by-nc-nd 4.0, Figure S1: Thermostated electrochemical reactor with a typical three-electrode configuration. Figure S2: Deconvoluted spectra of C1s peak for a) T-GFD4.6 (100 cycles in 2 M H2SO4), b) T-GFD4.6 (immersion 2 M H2SO4 0.4 M VOSO4) and c) T-GFD4.6 (100 cycles 2 M H2SO4 0.4 M VOSO4). Figure S3: Deconvoluted spectra of O1s peak for a) T-GFD4.6 (100 cycles in 2 M H2SO4), b) T-GFD4.6 (immersion 2 M H2SO4 0.4 M VOSO4) and c) T-GFD4.6 (100 cycles 2 M H2SO4 0.4 M VOSO4). Figure S4: Deconvoluted spectra of N1s peak for a) T-GFD4.6 electrode after being immersed 5 days in 2 M H2SO4 + 0.4 M VOSO4 electrolyte b) the T-GFD4.6 activated after 100 CV cycles in 2 M H2SO4. Figure S5: Tafel plots of the a) GFD4.6-EA, GFA6 and Avcarb6 and b) T-GFD4.6-EA, T-GFA6 and T-Avcarb6 obtained from the Linear Sweep Voltammetry curves. Figure S6: Linear relationship between the logarithm of the redox peak current and the logarithm of the scan rate for the thermal pre-treated electrodes; a)T-GFD4.6, b) T-AvCarb6 and c) T-GFA6. Table S1. Table S2. Table S3., This research is part of the CSIC program for the Spanish Recovery, Transformation and Resilience Plan funded by the Recovery and Resilience Facility of the European Union, established by the Regulation (EU) 2020/2094. Support of the CSIC Interdisciplinary Thematic Platform (PTI+) Transición Energética Sostenible+ (PTI-TRANSENER+). Funding provided by the Spanish Ministry of Science and Innovation under project MAFALDA (PID2021–126001OB-C32), as well as the support of the Regional Government of Aragon to the Fuel Conversion Research Group (T06_23R)., Peer reviewed