Development and Characterization of Carbon Supported Palladium-based Anode Catalysts for the Alkaline Direct Ethanol Fuel Cell

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Abstract

Direct ethanol fuel cells (DEFC) are limited by the slow kinetics of the ethanol oxidation reaction (EOR) at the anode. In this work, a ternary PdNiBi/C catalyst was synthesized via the modified instant method including a few modifications to investigate the influence on the performance for the alkaline EOR. The catalyst was ex-situ characterized by means of thin film rotating disk electrode technique using a standard three electrode set-up. The results were compared with a commercial Pd/C catalyst. With the CV measurements, all characteristic reduction and oxidation peaks for Pd, Ni, and Bi as well as for the hydrogen ad/absorption were observed. The PdNiBi/C (636 cm2 mg-1) catalyst presents a higher EASA than the commercial Pd/C (411 cm2 mg-1). The onset potential of the ternary catalyst (0.193 V) is lower, the maximum current density (138 mA cm-2) of the forward scan is higher and a better byproduct tolerance is examined compared to the commercial catalyst (0.255 V, 126 mA cm-2). The remaining current density of the PdNiBi/C is 13 % higher than that of the commercial Pd/C.
Translated title of the contributionEntwicklung und Charakterisierung von kohlenstoffgetragenen Anodenkatalysatoren auf Palladiumbasis für die alkalische Direktethanol-Brennstoffzelle
Original languageEnglish
Title of host publicationProceedings of the 16th Minisymposium Verfahrenstechnik and 7th Partikelforum
Number of pages6
DOIs
Publication statusPublished - 2020
Event16. Minisymposium Verfahrenstechnik & 7. Partikelforum - TU Wien, Inst. of Chemical Engineering, Virtuell, Austria
Duration: 21 Sep 202022 Sep 2020
http://www.chemical-engineering.at/minisymposium/

Conference

Conference16. Minisymposium Verfahrenstechnik & 7. Partikelforum
CountryAustria
CityVirtuell
Period21/09/2022/09/20
Internet address

Fields of Expertise

  • Mobility & Production

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