| The Durability Of Nanostructured Graphitic Carbon As A Catalyst Support In Proton Exchange Membrane Fuel Cells | ||
| Paul V. Larsen, Mahesh Waje and Yushan Yan, Chemical and Environmental Engineering, University of California, Riverside, 900 University Ave., Bourns Hall A242, Riverside, CA 92521 The electrochemical durability of nanostructured graphitic carbon as a catalyst support is compared with that of carbon black. Comparisons are made using potentiostatic(0.9V and Ar purged 0.5M H2SO4) and cyclovoltametric(-0.21V – 0.8V, Ar purged 0.5M H2SO4) techniques on the respective specimens. The results indicate that the graphitized carbon is more stable than carbon black, with a 70% lower corrosion current. Graphitic carbon has a substantially lower corrosion current and exhibits a greater retention of catalytic surface area. Extended Abstract Status: Not Uploaded | ||