Methanol Oxygen Fuel Cell Equation

Oxygen reacts at the negative electrode of a methanol fuel cell.

Methanol oxygen fuel cell equation.

In contrast to indirect methanol fuel cells where methanol is reacted to hydrogen by steam reforming dmfcs use a methanol solution usually around 1m i e. In a fuel cell methanol is used as fuel and oxygen gas is used as an oxidizer. A polar solvent methanol acquired the name wood alcohol because it was once produced chiefly by the. Methanol also known as methyl alcohol amongst other names is a chemical with the formula c h 3 o h a methyl group linked to a hydroxyl group often abbreviated meoh.

If standard enthalpy of combustion of methanol is 726 kj mol 1 efficiency of the fuel cell will be. About 3 in mass to carry the reactant into the cell. In addition while the oxygen that is required by a fuel cell can be. How would i work out the second one.

Anodic fuel of 6 0 m koh different concentrations of methanol and cathodic fuel of oxygen with 100 relative humidity were supplied at 1 ml min and 200 sccm respectively. Bio ethanol based fuel cells may improve the well to wheel balance of this biofuel because of the increased conversion rate of the fuel cell compared to the internal combustion engine. Polarization curves were measured on a fuel cell test system 850e scribner associates inc. The cell temperature was controlled at 80 c.

In a hydrogen oxygen fuel cell hydrogen and oxygen are used to produce a voltage and water is the only product. Ch 3 oh l 3 2o 2 g co 2 g 2h 2 o l. While the fuel cell reaction is simple the practical realization of a fuel cell is not so straight forward. Paul breeze in fuel cells 2017.

In the first place the reaction between hydrogen and oxygen will not take place spontaneously at ambient temperature 1 so the reaction must be catalyzed in low temperature fuel cells. At 298k standard gibb s energies of formation for ch 3 oh l h 2 o l and co 2 g are 166 2 237 2 and 394 4kj mol 1 respectively. A chemical cell produces a voltage until one of the reactants is used up. It is a light volatile colourless flammable liquid with a distinctive alcoholic odour similar to that of ethanol.

I wrote ch3oh 1 5o2 co2 2h2o b deduce the half equation for the reaction that takes place at the positive electrode in a methanol fuel cell. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen usually from air to sustain the chemical reaction whereas in a battery the chemical energy usually comes. Common operating temperatures are in the range 50 120 c where high temperatures are usually pressurized dmfcs themselves are more efficient at high temperatures and. Fuel cell performance test.