Reactions
DFAFCs convert formic acid and oxygen into carbon dioxide and water to produce energy. Formic acid oxidation occurs at the anode on a catalyst layer. Carbon dioxide is formed and protons (H+) are passed through the polymer membrane to react with oxygen on a catalyst layer located at the cathode. Electrons are passed through an external circuit from anode to cathode to provide power to an external device.
Anode: HCOOH → CO2 + 2 H+ + 2 e-
Cathode: 1/2 O2 + 2 H+ + 2 e- → H2O
Net reaction: HCOOH + 1/2 O2 → CO2 + H2O
Read more about this topic: Formic Acid Fuel Cell
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