Oxidation of Carbon Supports at Fuel Cell Cathodes: Differential Electrochemical Mass Spectrometric Study

被引：8

作者：

Li, Ming-fang ^{[1
]}

Tao, Qian ^{[1
]}

Liao, Ling-wen ^{[1
]}

Xu, Jie ^{[1
]}

Cai, Jun ^{[2
]}

Chen, Yan-xia ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem Phys, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Opt & Opt Engn, Hefei 230026, Peoples R China

来源：

CHINESE JOURNAL OF CHEMICAL PHYSICS | 2010年 / 23卷 / 04期

关键词：

Carbon corrosion; Pt; Fuel cell cathode; Direrential electrochemical mass spectrometry; PROTON-EXCHANGE MEMBRANE; OXYGEN REDUCTION; PHOSPHORIC-ACID; CORROSION; ELECTROOXIDATION; ELECTRODES; BEHAVIOR; KINETICS; FILM;

D O I：

10.1088/1674-0068/23/04/442-446

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The effects of O-2 and the supported Pt nano-particles on the mechanisms and kinetics of the carbon support corrosion are investigated by monitoring the CO2 production using differential electrochemical mass spectrometry in a dual-thin layer flow cell. Carbon can be oxidized in different distinct potential regimes; O-2 accelerates carbon oxidation, the rates of CO2 production from carbon oxidation in O-2 saturated solution are two times of that in N-2 saturated solution at the same potential; Pt can catalyze the carbon oxidation, with supported Pt nanoparticles , the overpotential for carbon oxidation is much smaller than that without loading in the carbon electrode. The mechanism for the enhanced carbon oxidation by Pt and O-2 are discussed.

引用

页码：442 / 446

页数：5

共 24 条

[1]

ANGERSTE.H, 1973, J ELECTROANAL CHEM, V43, P9, DOI 10.1016/0368-1874(73)80226-6

[2] Differential electrochemical mass spectrometry [J].

Baltruschat, H .

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 2004, 15 (12) :1693-1706

[3] Kinetics and mechanism of the electrooxidation of formic acid - Spectroelectrochemical studies in a flow cell [J].

Chen, YX ;

Heinen, M ;

Jusys, Z ;

Behm, RJ .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (06) :981-985

[4] Model study on the stability of carbon support materials under polymer electrolyte fuel cell cathode operation conditions [J].

Colmenares, L. C. ;

Wurth, A. ;

Jusys, Z. ;

Behm, R. J. .

JOURNAL OF POWER SOURCES, 2009, 190 (01) :14-24

[5] The role of carbon in fuel cells [J].

Dicks, Andrew L. .

JOURNAL OF POWER SOURCES, 2006, 156 (02) :128-141

[6] PtxCoy Catalysts Degradation in PEFC Environments: Mechanistic Insights I. Multiscale Modeling [J].

Franco, Alejandro A. ;

Passot, Sylvain ;

Fugier, Pascal ;

Anglade, Christelle ;

Billy, Emmanuel ;

Guetaz, Laure ;

Guillet, Nicolas ;

De Vito, Eric ;

Mailley, Sophie .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (03) :B410-B424

[7] OXYGEN REDUCTION KINETICS ON A PLATINUM RDE COATED WITH A RECAST NAFION1 FILM [J].

GOTTESFELD, S ;

RAISTRICK, ID ;

SRINIVASAN, S .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1987, 134 (06) :1455-1462

[8] Pt nanoparticle binding on functionalized multiwalled carbon nanotubes [J].

Hull, RV ;

Li, L ;

Xing, YC ;

Chusuei, CC .

CHEMISTRY OF MATERIALS, 2006, 18 (07) :1780-1788

[9] Characterization of vulcan electrochemically oxidized under simulated PEM fuel cell conditions [J].

Kangasniemi, KH ;

Condit, DA ;

Jarvi, TD .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (04) :E125-E132

[10] Microfabricated fuel cell with composite glass/Nafion proton exchange membrane [J].

Li, J ;

Moore, CW ;

Bhusari, D ;

Prakash, S ;

Kohl, PA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (02) :A343-A347

← 1 2 3 →