Filip Todorovski (Author), Emilija Dejanoska (Author), Mihael Sekavčnik (Author), Mitja Mori (Author), Andrej Lotrič (Author)

Abstract

This study examines the impact of nominal contact pressure on the electrochemical performance and degradation behaviour of high-temperature proton exchange membrane fuel cells (HT-PEMFCs) with pre-doped polybenzimidazole (p-PBI) membranes, focusing primarily on start-stop cycling durability. Three nominal contact pressures—0.30 MPa, 0.55 MPa, and 0.85 MPa—were applied during 70-cycle start-stop tests. Performance evolution was assessed using polarization curves, electrochemical impedance spectroscopy (EIS), distribution of relaxation times (DRT), and spatial current density mapping.

Keywords

high-temperature PEM fuel cell;start-stop cycling protocol;nominal contact pressure;electrochemical impedance spectroscopy;distribution of relaxation times;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.352.6:543.429.3
COBISS: 247259395 Link will open in a new window
ISSN: 0013-4686
Views: 61
Downloads: 49
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Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: visokotemperaturne PEM gorivne celice;protokol start-stop ciklanja;nominalni kontaktni tlak;elektrokemična impedančna spektroskopija;distribucija relaksacijskih časov;
Type (COBISS): Article
Pages: str. 1-18
Issue: ǂVol. ǂ540, [article no.] 147254
Chronology: Nov. 2025
DOI: 10.1016/j.electacta.2025.147254
ID: 27225015