20.500.12556/DKUM-87723 Study on commercially available membranes for alkaline direct ethanol fuel cells This study provides a comparison of different commercially available low-cost anion exchange membranes (AEMs), a microporous separator, a cation exchange membrane (CEM), and an anionic-treated CEM for their application in the liquid-feed alkaline direct ethanol fuel cell (ADEFC). Moreover, the effect on performance was evaluated taking two different modes of operation for the ADEFC, with AEM or CEM, into consideration. The membranes were compared with respect to their physical and chemical properties, such as thermal and chemical stability, ion-exchange capacity, ionic conductivity, and ethanol permeability. The influence of these factors on performance and resistance was determined by means of polarization curve and electrochemical impedance spectra (EIS) measurements in the ADEFC. In addition, the influence of two different commercial ionomers on the structure and transport properties of the catalyst layer and on the performance were analyzed with scanning electron microscopy, single cell tests, and EIS. The applicability barriers of the membranes were pointed out, and the ideal combinations of membrane and ionomer for the liquid-feed ADEFC achieved power densities of approximately 80 mW cm–2 at 80 °C. bioethanol electrodes fluoropolymers ionomers membranes bioetanol elektrode fluoropolimeri ionomeri membrane true false true ACS Publications (American Chemical Society) Angleški jezik Slovenski jezik https://pubs.acs.org/journal/acsodf Članek v reviji 2024-03-26 09:40:02 2024-03-26 09:40:03 2024-03-27 03:14:29 0000-00-00 00:00:00 2023 0 0 [13] str. A-M June 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-03-08 2023-05-24 2023-06-02 543:66 155012867 10.1021/acsomega.3c01564 2470-1343 roschger-et-al-2023-study-on-commercially-available-membranes-for-alkaline-direct-ethanol-fuel-cells.pdf roschger-et-al-2023-study-on-commercially-available-membranes-for-alkaline-direct-ethanol-fuel-cells.pdf 1 A2D241638DCF8E0542DF1F5AA2CCDFD7 c998cad7ce9aa0bf5b87a27f3a04df086a38b48c101e6f8d91b15941372dafaa 31111bd5-eb4e-11ee-adef-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177405 https://pubs.acs.org/doi/10.1021/acsomega.3c01564 0 3ece6542-eb4e-11ee-adef-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177406 Fakulteta za strojništvo 0 0 0