| Durability Investigation of Carbon Nanotube as Catalyst Support for Proton Exchange Membrane Fuel Cell Electrode | ||
| Xin Wang, National University of Singapore, Division of Chemical and Biomolecular Engineering, College of Engineering, Nanyang Technological University, Singapore 637722, Singapore, 637722, Singapore, Wenzhen Li, chemical and environmental engineering, University of California, Riverside, Bourns Hall A242, Riverside, CA 92521, Zhongwei Chen, University of California, Riverside, A242 Bourns Hall, Chemical Engineering, Riverside, CA 92507, Mahesh M. Waje, University of California Riverside, 1122 Linden street, # 105, Riverside, CA 92507 and Yushan Yan, 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. Extended Abstract Status: Not Uploaded | ||