Publication Type
Journal
Journal Name
Chemistry of Materials
Publication Date
Page Numbers
1659 to 1667
Volume
23
Issue
7
Abstract
We demonstrate cathodes for solid acid fuel cells fabricated by vapor deposition of
platinum from the metalorganic precursor Pt(acac)2 on the solid acid CsH2PO4 at 210 C. A
network of platinum nanoparticles with diameters of 2-4 nm serves as both the oxygen reduction
catalyst and the electronic conductor in the electrode. Electrodes with a platinum content of 1.75
mg/cm2 are more active for oxygen reduction than previously reported electrodes with a platinum
content of 7.5 mg/cm2. Electrodes containing <1.75 mg/cm2 of platinum show significantly
reduced catalytic activity and increased