20.500.12556/DKUM-98064 N-doped reduced graphene oxide nanoribbons - loaded chitosan membranes: Synthesis, stabilisation and assessment as solid polyelectrolytes in alkaline fuel cells Novel, self-standing membranes based on chitosan (CS), incorporating N-doped reduced graphene oxide nanoribbons (N-rGONR) and crosslinked with the naturally derived genipin (GEN), were developed. FTIR confirmed successful GEN reaction with CS and the introduction of N-rGONRs, which reduced the overall crystallinity while improving its mechanical properties. The comprehensive physicochemical and electrochemical properties, including ethanol permeability, alkali uptake, dimensional stability, ionic conductivity, and durability, were evaluated. Membrane performance was assessed within the single-cell module under practical operating conditions in an alkaline direct ethanol fuel cell (ADEFC). CS-based membranes containing 0.01 wt% N-rGONR achieved a maximum power density of 6.8 mW cm-2 at 57 °C with 1 M ethanol/1 M KOH, increasing to 17.7 mW cm-2 at 3 M ethanol/5 M KOH, surpassing a commercial reference membrane. Membranes containing either N-rGONR or GEN showed superior performance in single-cell experiments; however, their combined addition demonstrated better retention of ionic conductivity over 14 days of exposure to simulated ADEFC operating conditions. This synergistic stabilisation effect of both components on CS, which when not modified completely degrades in prolonged exposure experiments, emphasises the potential of the newly developed CS-based membranes for alkaline direct ethanol fuel cell applications. chitosan N-doped graphene oxide nanoribbons genipin fuel cell hitozan N-dopiran grafenov oksid nano trakovi membrane gorivne celice true false true Elsevier Angleški jezik Slovenski jezik https://www.sciencedirect.com/science/article/pii/S0378775326010669?via%3Dihub Članek v reviji 2026-05-12 11:42:27 2026-05-12 11:42:27 2026-05-13 03:09:17 0000-00-00 00:00:00 2026 0 0 15 str. Vol. 681, [article no.] 240316 July 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-01-06 2026-05-04 2026-05-07 577:620.3 277504771 10.1016/j.jpowsour.2026.240316 1873-2755 https://www.sciencedirect.com/science/article/pii/S0378775326010669 1 e3e1246b-4de6-11f1-b269-00155d0001a1 https://dk.um.si/Dokument.php?lang=slv&id=206034 1-s2.0-S0378775326010669-main.pdf 1-s2.0-S0378775326010669-main.pdf 1 16807FF6816AF9B7A6CF7E187A4A376B 13a382695f7972b50f3de5166c5357b86ab1e8fcaf9ad02dedd0b62f239b6ed2 69ad0945-4de9-11f1-b269-00155d0001a1 https://dk.um.si/Dokument.php?lang=slv&id=206037 Fakulteta za strojništvo 0 0 0