Abstract
A mixture of activated carbon fiber (ACF) and acetylene black was employed as a catalyst support material for the electrode of phosphoric acid fuel cell and its cathode performance was examined in a half cell of 100% phosphoric acid electrolyte at 190°C. Platinum particles loaded on this hybrid electrode were proved to be less than 2.5 nm in size. As the ratio of ACF to acetylene black changed to 10, 20, 30, 40 and 50%, the corresponding cathode performance showed 972, 1143, 928, 909 and 723 mA/cm2 at 700 mV, respectively.
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