Monday, 31 October 2005 - 4:55 PM
130e
Durability Investigation of Carbon Nanotube as Catalyst Support for Proton Exchange Membrane Fuel Cell Electrode
Xin Wang
1,
Wenzhen Li2, Zhongwei Chen
2, Mahesh M. Waje
3, and Yushan Yan
4. (1) National University of Singapore, Division of Chemical and Biomolecular Engineering, College of Engineering, Nanyang Technological University, Singapore 637722, Singapore, 637722, Singapore, (2) chemical and environmental engineering, University of California, Riverside, Bourns Hall A242, Riverside, CA 92521, (3) University of California Riverside, 1122 Linden street, # 105, Riverside, CA 92507, (4) Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521
Electrochemical surface oxidation of Vulcan XC-72 and multiwalled carbon nanotube (MWNT) was compared following potentiostatic treatments up to 168 hrs under condition simulating PEMFC cathode environment. The subsequent electrochemical characterization at different time intervals suggests that MWNT is electrochemically more stable than Vulcan XC-72 with less surface oxide formation and 30% lower corrosion current under the investigated condition. As a result of high corrosion resistance, MWNT shows smaller loss of Pt surface area and catalytic activity when used as fuel cell catalyst support.
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