Durability study of Pt/C and Pt/CNTs catalysts under simulated PEM fuel cell conditions

被引：370

作者：

Shao, YY ^{[1
]}

Yin, GP ^{[1
]}

Gao, YZ ^{[1
]}

Shi, PF ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2006年 / 153卷 / 06期

关键词：

D O I：

10.1149/1.2191147

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The durability of carbon black supported Pt (Pt/C) and multiwalled carbon nanotubes supported Pt (Pt/CNTs) catalysts for potential application in polymer electrolyte membrane fuel cells are investigated using an accelerated durability test. The electrochemical surface area of Pt/C degrades by 49.8% during the 192-h test time, compared with 26.1% for Pt/CNTs, which is due to Pt particle growth and Pt loss from the support in the form of Pt ions and Pt particles. Transmission electron microscopy and X-ray diffraction analysis show that Pt particles in Pt/CNTs present higher sintering resistance. X-ray photoelectron spectroscopy characterization indicates that CNTs in Pt/CNTs are more resistant to electrochemical oxidation than carbon black in Pt/C. It can be concluded that Pt/CNTs are more stable under electrochemical operation, which can be attributed to specific interaction between Pt and the support and the higher resistance of the support to electrochemical oxidation. (C) 2006 The Electrochemical Society.

引用

页码：A1093 / A1097

页数：5

共 41 条

[1] Performance and lifetime analysis of the kW-class PEMFC stack [J].

Ahn, SY ;

Shin, SJ ;

Ha, HY ;

Hong, SA ;

Lee, YC ;

Lim, TW ;

Oh, IH .

JOURNAL OF POWER SOURCES, 2002, 106 (1-2) :295-303

[2] Catalyst microstructure examination of PEMFC membrane electrode assemblies vs. time [J].

Cheng, X ;

Chen, L ;

Peng, C ;

Chen, ZW ;

Zhang, Y ;

Fan, QB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (01) :A48-A52

[3] PREPARATION OF PLATINUM SUPPORTED ON PREGRAPHITIZED CARBON-BLACKS [J].

COLOMA, F ;

SEPULVEDAESCRIBANO, A ;

FIERRO, JLG ;

RODRIGUEZREINOSO, F .

LANGMUIR, 1994, 10 (03) :750-755

[4] HEAT-TREATED CARBON-BLACKS AS SUPPORTS FOR PLATINUM CATALYSTS [J].

COLOMA, F ;

SEPULVEDAESCRIBANO, A ;

RODRIGUEZREINOSO, F .

JOURNAL OF CATALYSIS, 1995, 154 (02) :299-305

[5] Durability study Of Pt3Ni1 catalysts as cathode in PEM fuel cells [J].

Colón-Mercado, HR ;

Kim, H ;

Popov, BN .

ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (08) :795-799

[6] Kinetic model of platinum dissolution in PEMFCs [J].

Darling, RM ;

Meyers, JP .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (11) :A1523-A1527

[7] Degradation study of MEA for PEMFCs under low humidity conditions [J].

Endoh, E ;

Terazono, S ;

Widjaja, H ;

Takimoto, Y .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (07) :A209-A211

[8] Purification of single-wall carbon nanotubes by electrochemical oxidation [J].

Fang, HT ;

Liu, CG ;

Chang, L ;

Feng, L ;

Min, L ;

Cheng, HM .

CHEMISTRY OF MATERIALS, 2004, 16 (26) :5744-5750

[9] Instability of Pt/C electrocatalysts in proton exchange membrane fuel cells - A mechanistic investigation [J].

Ferreira, PJ ;

la O', GJ ;

Shao-Horn, Y ;

Morgan, D ;

Makharia, R ;

Kocha, S ;

Gasteiger, HA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (11) :A2256-A2271

[10] Modification of the surface chemistry of activated carbons [J].

Figueiredo, JL ;

Pereira, MFR ;

Freitas, MMA ;

Orfao, JJM .

CARBON, 1999, 37 (09) :1379-1389

← 1 2 3 4 5 →