Efficient Chitosan/Nitrogen-doped Reduced Graphene Oxide Composite Membranes for Direct Alkaline Ethanol Fuel Cells

Selestina Gorgieva, Azra Osmić , Silvo Hribernik, Mojca Božič, Jurij Svete, Viktor Hacker, Sigrid Wolf, Bostjan Genorio

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

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 (Pmax. = 3.7 mWcm −2) outperformed the pristine CS membrane significantly (Pmax. = 2.2 mWcm −2), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells.

Originalspracheenglisch
Aufsatznummer1740
Seiten (von - bis)1-25
Seitenumfang25
FachzeitschriftInternational Journal of Molecular Sciences
Jahrgang22
Ausgabenummer4
DOIs
PublikationsstatusVeröffentlicht - 9 Feb 2021

ASJC Scopus subject areas

  • !!Molecular Biology
  • !!Spectroscopy
  • !!Catalysis
  • Anorganische Chemie
  • !!Computer Science Applications
  • !!Physical and Theoretical Chemistry
  • Organische Chemie

Fields of Expertise

  • Mobility & Production

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