Title: Development and Characterization of Carbon Supported Palladium-based Anode Catalysts for the Alkaline Direct Ethanol Fuel Cell
Authors: Wolf, Sigrid 
Roschger, Michaela 
Hacker, Viktor 
Keywords: Direct ethanol fuel cell; Anode catalysts; Alkaline ethanol oxidation reaction; Rotating disk electrode analysis
Issue Date: Dec-2020
Book Title: Proceedings of the 16th Minisymposium Verfahrenstechnik and 7th Partikelforum (TU Wien, Sept. 21/22, 2020) 
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.
URI: http://hdl.handle.net/20.500.12708/16655
DOI: 10.34726/595
Organisation: E166-02-2 - Forschungsgruppe Fluiddynamische Simulation (CFD) 
License: CC BY 4.0 CC BY 4.0
Publication Type: Inproceedings
Appears in Collections:Conference Paper

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