The electrooxidation of carbon black, which contains Pt electrocatalyst particles, was investigated in concentrated phosphoric acid at 0.6 to 1.0V. At the high potentials, anodic dissolution of Pt is rapid, and consequently no metal is present to catalyze the corrosion of carbon at 160 °C in 98% H3PO4. On the other hand, at 0.6V anodic dissolution of Pt is negligible, and hence it is present to catalyze the corrosion of carbon. In fact, the measurements indicate that the corrosion rate is noticeable higher than that of carbon black without Pt. These results suggest the Pt particles with surface Pt-0 may serve as an intermediary which facilitates the corrosion of carbon.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Electrooxidation Behaviour of Pt/Carbon Electrocatalyst for Phosphoric Acid Fuel Cells (PAFC)


    Additional title:

    Sae Technical Papers


    Contributors:
    Patti, A. (author) / Passalacqua, E. (author) / Kinoshita, K. (author) / Vivaldi, M. (author) / Giordano, N. (author) / Antonucci, P. L. (author)

    Conference:

    27th Intersociety Energy Conversion Engineering Conference (1992) ; 1992



    Publication date :

    1992-08-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







    PAFC developments for vehicular operation

    Anahara,R. / Fuji Electric,JP | Automotive engineering | 1988


    Phosphoric acid fuel cells in Japan

    Hojo, N. | Online Contents | 1996