Mechanistic study of the deactivation of carbon supported Pd during formic acid oxidation

被引：121

作者：

Yu, Xingwen ^{[1
]}

Pickup, Peter G. ^{[1
]}

机构：

[1] Mem Univ Newfoundland, Dept Chem, St John, NF A1B 3X7, Canada

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 10期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Formic acid; Fuel cell; Pd/C; Deactivation; Stripping; Catalyst; FUEL-CELLS; ELECTROOXIDATION; ELECTRODES; NANOPARTICLES; CATALYSTS; SURFACE; DFAFC; CO;

D O I：

10.1016/j.elecom.2009.08.041

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Palladium is an attractive anode catalyst for direct formic acid fuel cells (DFAFC) because of its high activity relative to Pt, but it suffers significant activity losses during operation of the DFAFC. The deactivation mechanism of a Pd/C catalyst during oxidation of formic acid has been studied by means of electrochemical stripping voltammetry. The stripping characteristics of the anode poison are virtually the same as those of adsorbed CO, and adsorbed CO has a similar poisoning effect. It is therefore proposed that a gradual build-up of adsorbed CO causes the deactivation of Pd in DFAFCs. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2012 / 2014

页数：3

共 15 条

[1] The electro-oxidation of formic acid on Pt-Pd single crystal bimetallic surfaces [J].

Arenz, M ;

Stamenkovic, V ;

Schmidt, TJ ;

Wandelt, K ;

Ross, PN ;

Markovic, NM .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (19) :4242-4251

[2] Bonding and motional aspects of CO adsorbed on the surface of Pt nanoparticles decorated with Pd [J].

Babu, PK ;

Kim, HS ;

Chung, JH ;

Oldfield, E ;

Wieckowski, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) :20228-20232

[3]

CAPON A, 1973, J ELECTROANAL CHEM, V45, P205, DOI 10.1016/0368-1874(73)85076-2

[4]

Feliu J.M., 2003, Handbook of Fuel Cells, V2, P679

[5] Direct Formic Acid Fuel Cells with 600 mA cm-2 at 0.4 V and 22 °C [J].

Ha, S. ;

Larssen, R. ;

Zhu, Y. ;

Masel, R. I. .

FUEL CELLS, 2004, 4 (04) :337-343

[6] Competitive adsorption of water and CO on Pd modified Pt electrode from CH3OH solution [J].

Luo, LQ ;

Futamata, M .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (02) :231-237

[7] Formic acid electrooxidation on Pd in acidic solutions studied by surface-enhanced infrared absorption spectroscopy [J].

Miyake, Hiroto ;

Okada, Tatsuhiro ;

Samjeske, Gabor ;

Osawa, Masatoshi .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2008, 10 (25) :3662-3669

[8] Anode Poisoning Study in Direct Formic Acid Fuel Cells [J].

Pan, Yinghui ;

Zhang, Ruiming ;

Blair, Sharon L. .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2009, 12 (03) :B23-B26

[9] Electrocatalytic properties of Au(111)-Pd quasi-single-crystal film electrodes as probed by ATR-SEIRAS [J].

Pronkin, S. ;

Hara, M. ;

Wandlowski, T. .

RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2006, 42 (11) :1177-1192

[10] Catalysts for direct formic acid fuel cells [J].

Rice, C ;

Ha, S ;

Masel, RI ;

Wieckowski, A .

JOURNAL OF POWER SOURCES, 2003, 115 (02) :229-235

← 1 2 →