Browse by author
Lookup NU author(s): Dr Khalid Zakaria, Dr Maksudul Hasan, Professor Mohamed MamloukORCiD, Emeritus Professor Keith Scott
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim The direct oxidation reaction of glycerol (GOR) was studied and compared to that of methanol (MOR) and ethanol (EOR) in both acid and alkaline media using commercial Pt/C, PtRu/C, Pd/C and PdNi/C electrocatalysts. The results show that GOR and MOR in alkaline media is better than that in acid media, in contrast to ethanol. Among the studied catalysts, PtRu/C showed the lowest onset potential and the highest catalytic activity for GOR and MOR in alkaline media, providing the lowest onset potential and a Tafel slope (TS) of 63 mV dec −1 , which could be attributed to the high surface poisoning tolerance. In fuel cells, the open circuit voltage of alkaline anion exchange membrane fuel cells (AEMFCs) was higher than that of the proton exchange membrane fuel cells (PEMFCs). In the kinetic region (up to 20 mA cm −2 ), the power density and cell performance were higher for AEMFCs than those of PEMFCs. However, the power density peaks were higher for PEMFCs than those for AEMFCs. Both the cell performance and the power density increased with increasing temperature. Regardless of the temperature and the media, glycerol crossover is comparable to that of ethanol but much less than that of methanol.
Author(s): Zakaria K, McKay M, Thimmappa R, Hasan M, Mamlouk M, Scott K
Publication type: Article
Publication status: Published
Journal: ChemElectroChem
Year: 2019
Volume: 6
Issue: 9
Pages: 2578-2585
Print publication date: 02/05/2019
Online publication date: 05/04/2019
Acceptance date: 02/04/2018
ISSN (electronic): 2196-0216
Publisher: Wiley-VCH Verlag
URL: https://doi.org/10.1002/celc.201900502
DOI: 10.1002/celc.201900502
Altmetrics provided by Altmetric
