The commonly-used anodic catalyst for DFAFCs is platinum black, on which the formic acid electrooxidation occurs via a dual pathway, which consists of the direct pathway without CO poison and the indirect pathway with the formation of CO as poisonous intermediates. The improvement of performance of DFAFCs depends on fabrication of high-efficient electrocatalysts. The direct formic acid fuel cell has a theoretical open circuit potential of 1.48 V, higher than that of direct methanol fuel cell (1.18 V). ![]() ![]() Direct formic acid fuel cells (DFAFCs) are considered promising power sources of clean and environment-friendly energy for miniature and portable electronic devices because of excellent performance, such as high power density.
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