Cobalt-modified palladium nanocatalyst on nitrogen-doped reduced graphene oxide for direct hydrazine fuel cell

Ghasem Hosseini, Vahid Daneshvariesfahlan, Sigrid Wolf, Viktor Hacker

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

Nitrogen-doped reduced graphene oxide-supported palladium–cobalt nanoparticles (PdCo NPs/NrGO NSs) are synthesized and used as a high-performance and low-cost anodic catalyst for direct hydrazine–hydrogen peroxide fuel cells. The SEM and TEM images of PdCo NPs/NrGO NSs show the uniform metal nanoparticle distribution on the NrGO NSs. The reduction of the oxygen functional groups and the doping of the nitrogen atoms in the GO framework are confirmed by FT-IR and XRD spectroscopic studies. The Pd catalysts modified by Co exhibit a higher catalytic activity, lower onset potential, better durability, and lower impedance values than unmodified Pd catalysts for the electro-oxidation of hydrazine. The kinetic studies show a first-order reaction with an activation energy of 12.51 kJ mol−1. A direct hydrazine–hydrogen peroxide fuel cell with PdCo NPs/NrGO NSs as anode and Pt/C as cathode provides an open circuit voltage of 1.76 V and a maximum power density of 148.58 mW cm−2 at 60 °C, indicating that the PdCo NPs/NrGO NSs are an economical, high performance and reliable anode catalyst for the direct hydrazine–hydrogen peroxide fuel cell.
Originalspracheenglisch
Seiten (von - bis)39223-39232
Seitenumfang10
FachzeitschriftRSC Advances
Jahrgang11
Ausgabenummer62
DOIs
PublikationsstatusVeröffentlicht - 8 Dez 2021

ASJC Scopus subject areas

  • Chemische Verfahrenstechnik (insg.)
  • Chemie (insg.)

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