High performance chitosan/nanocellulose-based composite membrane for alkaline direct ethanol fuel cells

Hren, Maša (avtor), Roschger, Michaela (avtor), Hacker, Viktor (avtor), Genorio, Boštjan (avtor), Fakin, Darinka (avtor), Gorgieva, Selestina (avtor)

Polysaccharide anion exchange membranes (AEMs) containing chitosan (CS), cellulose nanofibrils (CNFs) and CNFs quaternized with poly(diallyldimethylammonium chloride) (CNF(P)s) were developed for use in alkaline direct ethanol fuel cells (ADEFCs). The resulting composite membranes prepared by the solvent casting process based on an experimental design were comprehensively assessed for morphology, KOH uptake, swelling ratio, EtOH permeability, mechanical properties, ionic conductivity, and cell performance. The fabricated CS-based composite membranes with CNF(P) fillers were superior to the commercial Fumatech FAA-3-50 membrane in terms of Young's modulus and tensile strength (69 % and 85 % higher, respectively), ion exchange capacity (169 % higher), and ionic conductivity (228 % higher). Single fuel cell tests have shown excellent performance of the CS-based membranes with CNF and CNF(P) fillers, as they exhibited up to 86 % improvement in power density at 80 °C compared to the commercial membrane (65.1 mW/cm$^2$ vs. 35.1 mW/cm$^2$) and higher maximum power density at all test conditions.

• Jezik: Angleški jezik
• Ključne besede: chitosan, cellulose nanofibrils, poly(diallyldimethylammonium chloride), anion exchange membrane, alkaline direct ethanol fuel cell
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: 15 str.
• Številčenje: Vol. 253, pt. 8, art. 127693
• PID: 20.500.12556/RUL-152951
• UDK: 606:[620.925:579]:621.352.6:620.3
• ISSN pri članku: 1879-0003
• DOI: 10.1016/j.ijbiomac.2023.127693
• COBISS.SI-ID: 171005443
• Datum objave v RUL: 13.12.2023

Gradivo je del revije

• Naslov: International journal of biological macromolecules
• Skrajšan naslov: Int. j. biol. macromol.
• Založnik: Elsevier
• ISSN: 1879-0003
• COBISS.SI-ID: 107163139

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: hitozan, celulozni nanofibrili, anionsko izmenjevalna membrana, alkalne etanolne gorivne celice