Deactivation resistant Pd-ZrO2 supported on multiwall carbon nanotubes catalyst for direct formic acid fuel cells
Artikel i vetenskaplig tidskrift, 2015

One of the main problems of palladium based catalysts for a direct formic acid fuel cell (DFAFC) is their low stability during a long-term operation. In these studies, the Pd-ZrO2 catalyst supported on the multiwall carbon nanotubes (MWCNTs) was prepared and thermo-chemically treated. These catalysts were tested in a fuel cell for formic acid electrooxidation, and their chemical composition and structure were characterised by the XPS, STEM, HR-TEM and XRD techniques. It was found that the Pd-ZrO2/MWCNTs catalyst after synthesis causes oscillations of the cell voltage during operation resulting in significantly higher deactivation resistance than that of Pd/MWCNTs. This may be attributed to the "self-cleaning" mechanism of poisoned Pd catalyst by carbon monoxide through the electrochemical oxidation of COads (adsorbed) to CO2 (gas).

Direct formic acid fuel cell

Pd-ZrO2/MWCNTs

Deactivation resistance

Spontaneous voltage

Författare

A. Malolepszy

Politechnika Warszawska

M. Mazurkiewicz

Politechnika Warszawska

L. Stobinski

Politechnika Warszawska

Polish Academy of Sciences

B. Lesiak

Polish Academy of Sciences

L. Kover

Magyar Tudomanyos Akademia

J. Toth

Magyar Tudomanyos Akademia

B. Mierzwa

Polish Academy of Sciences

A. Borodzinski

Polish Academy of Sciences

Florian Nitze

Umeå universitet

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

T. Wagberg

Umeå universitet

International Journal of Hydrogen Energy

0360-3199 (ISSN)

Vol. 40 46 16724-16733

Ämneskategorier

Kemi

DOI

10.1016/j.ijhydene.2015.08.048

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Senast uppdaterat

2021-02-17