Graphitic mesoporous carbon as a durable fuel cell catalyst support

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Journal of Power Sources

OSTI ID:1043319

Dai, Sheng ^[1]; Liang, Chengdu ^[1]; Shanahan, Paul ^[2]; Xu, Lianbin ^[2]; Waje, Mahesh ^[2]; Yan, Y. S. ^[2]

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1. ORNL
2. University of California

Highly stable graphitic mesoporous carbons (GMPCs) are synthesized by heat-treating polymer-templated mesoporous carbon (MPC) at 2600 C. The electrochemical durability of GMPC as Pt catalyst support (Pt/GMPC) is compared with that of carbon black (Pt/XC-72). Comparisons are made using potentiostatic and cyclic voltammetric techniques on the respective specimens under conditions simulating the cathode environment of PEMFC (proton exchange membrane fuel cell). The results indicate that the Pt/GMPC is much more stable than Pt/XC-72, with 96% lower corrosion current. The Pt/GMPC also exhibits a greatly reduced loss of catalytic surface area: 14% for Pt/GMPC vs. 39% for Pt/XC-72.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1043319
• Journal Information: Journal of Power Sources, Vol. 185, Issue 1; ISSN 0378-7753
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CARBON
CARBON BLACK
CATALYST SUPPORTS
CATHODES
CORROSION
ELECTROCATALYSTS
FUEL CELLS
GRAPHITIZATION
MEMBRANES
POLYMERS
POROUS MATERIALS
SURFACE AREA
TEMPERATURE RANGE 1000-4000 K