| Abstract
| - The influence of Bi modification of Pt anode catalyst on the performance of direct formic acid fuel cells wasinvestigated. Compared with the unmodified Pt anode, the Bi modified Pt (PtBim) electrode prepared byunder-potential deposition (UPD) caused faster electrocatalytic oxidation of formic acid at the same value ofthe overpotential, and thus, PtBim resulted in an increase in the power performance of direct formic acid fuelcells. Electrochemical impedance spectra helped to explain the difference of performance between theunmodified Pt and Bi modified Pt electrodes. Solution conductivity and dehydration phenomena occurring inhighly concentrated formic acid solutions can also explain the higher power performance of PtBim.
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