Durability Investigation of Cup-Stacked Carbon Nanotubes Supported Pt as PEMFC Catalyst

The durability of Pt supported on cup stacked carbon nanotubes (CSCNTs) was investigated with an accelerated test using cyclic voltammetry as a tool. The loss in electrochemically active surface area is compared with that of an E-TEK Pt/Vulcan XC-72 carbon catalyst. The relatively lesser surface area loss in case of Pt/CSCNT catalyst is attributed to better corrosion resistance of CSCNTs. A preliminary data on the durability of cup stacked carbon nanotubes based membrane electrode assembly is presented.