Efficient chitosan/nitrogen-doped reduced graphene oxide composite membranes for direct alkaline ethanol fuel cells

Gorgieva, Selestina (avtor), Osmić, Azra (avtor), Hribernik, Silvo (avtor), Božič, Mojca (avtor), Svete, Jurij (avtor), Hacker, Viktor (avtor), Wolf, Sigrid (avtor), Genorio, Boštjan (avtor)

Herein, we prepared a series of nanocomposite membranes based on chitosan (CS) and three compositionally and structurally different N-doped graphene derivatives. Two-dimensional (2D) and quasi 1D N-doped reduced graphene oxides (N-rGO) and nanoribbons (N-rGONRs), as well as 3D porous N-doped graphitic polyenaminone particles (N-pEAO), were synthesized and characterized fully to confirm their graphitic structure, morphology, and nitrogen (pyridinic, pyrrolic, and quaternary or graphitic) group contents. The largest (0.07%) loading of N-doped graphene derivatives impacted the morphology of the CS membrane significantly, reducing the crystallinity, tensile properties, and the KOH uptake, and increasing (by almost 10-fold) the ethanol permeability. Within direct alkaline ethanol test cells, it was found that CS/N rGONRs (0.07 %) membrane (P$_{max}$. = 3.7 mWcm$^{−2}$) outperformed the pristine CS membrane significantly (P$_{max}$. = 2.2 mWcm$^{−2}$), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells.

• Jezik: Angleški jezik
• Ključne besede: chitosan, nitrogen-doped reduced graphene oxide, anion-exchange membrane, direct alkaline 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: 2021
• Št. strani: 24 str.
• Številčenje: Vol. 22, iss. 4, art. 1740
• PID: 20.500.12556/RUL-135009
• UDK: 543.2:66
• ISSN pri članku: 1422-0067
• DOI: 10.3390/ijms22041740
• COBISS.SI-ID: 50761731
• Datum objave v RUL: 17.02.2022

Gradivo je del revije

• Naslov: International journal of molecular sciences
• Skrajšan naslov: Int. j. mol. sci.
• Založnik: MDPI
• ISSN: 1422-0067
• COBISS.SI-ID: 2779162

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 09.02.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: hitozan, grafen oksid, membrane, gorivne celice, etanol