Abstract
The complete ethanol electro-oxidation in direct ethanol fuel cells generates CO2 and H2O, involving 12 electrons transfer per molecule. In acid electrolyte, and Pt electrocatalysts, the reaction runs in parallel forming two undesirable by-products: acetic acid (corrosive) and acetaldehyde (toxic and volatile), yielding only 2 and 4 electrons, respectively and diminishing the Faradaic eff…