Deactivation resistant Pd-ZrO2 supported on multiwall carbon nanotubes catalyst for direct formic acid fuel cells

被引：36

作者：

Malolepszy, A. ^{[1
,2
]}

Mazurkiewicz, M. ^{[1
,2
]}

Stobinski, L. ^{[2
,3
]}

Lesiak, B. ^{[3
]}

Kover, L. ^{[4
]}

Toth, J. ^{[4
]}

Mierzwa, B. ^{[3
]}

Borodzinski, A. ^{[3
]}

Nitze, F. ^{[5
,6
]}

Wagberg, T. ^{[5
]}

机构：

[1] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

[2] Warsaw Univ Technol, Fac Chem & Proc Engn, PL-00645 Warsaw, Poland

[3] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

[4] Hungarian Acad Sci ATOMKI, Inst Nucl Res, H-4001 Debrecen, Hungary

[5] Umea Univ, Dept Phys, S-90187 Umea, Sweden

[6] Chalmers, Dept Chem & Biol Engn, Div Appl Surface Chem, S-41296 Gothenburg, Sweden

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 46期

基金：

瑞典研究理事会;

关键词：

Pd-ZrO2/MWCNTs; Direct formic acid fuel cell; Deactivation resistance; Spontaneous voltage oscillation; Electrochemical oxidation; PHOTOIONIZATION CROSS-SECTIONS; SURFACE-TREATMENT; PD CATALYSTS; ELECTROOXIDATION; OXIDATION; METHANOL; NANOPARTICLES; XPS; SPECTROSCOPY; COMPOSITES;

D O I：

10.1016/j.ijhydene.2015.08.048

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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). Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：16724 / 16733

页数：10

共 48 条

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