Direct-ethanol fuel cells or DEFCs are a category of fuel cells in which ethanol, is fed directly to the fuel cell. They have been used as a model to investigate a range of fuel cell concepts including the use of PEM. == Advantages == DEFC uses Ethanol in the fuel cell instead of the more toxic methanol. Ethanol is an attractive alternative to methanol because it comes with a supply chain that's already in place. Ethanol also remains the easier fuel to work with for widespread use by consumers. Ethanol is a hydrogen-rich liquid and it has a higher specific energy (8.0 kWh/kg) compared to methanol...