Methanol Oxygen Fuel Cell Equation

If standard enthalpy of combustion of methanol is 726 kj mol 1 efficiency of the fuel cell will be.

Methanol oxygen fuel cell equation. A chemical cell produces a voltage until one of the reactants is used up. O2 4h 4e 2h2o a write an equation for the complete combustion of methanol. But real world figures may be only achieved in some years since the development of direct methanol and ethanol fuel cells is lagging behind hydrogen powered fuel. Paul breeze in fuel cells 2017.

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. While the fuel cell reaction is simple the practical realization of a fuel cell is not so straight forward. Oxygen reacts at the negative electrode of a methanol fuel cell. 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.

In a fuel cell methanol is used as fuel and oxygen gas is used as an oxidizer. 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. The cell temperature was controlled at 80 c. 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.

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. A polar solvent methanol acquired the name wood alcohol because it was once produced chiefly by the. Fuel cell performance test.

In a hydrogen oxygen fuel cell hydrogen and oxygen are used to produce a voltage and water is the only product. 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. 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. Ch 3 oh l 3 2o 2 g co 2 g 2h 2 o l.

In addition while the oxygen that is required by a fuel cell can be. It is a light volatile colourless flammable liquid with a distinctive alcoholic odour similar to that of ethanol. About 3 in mass to carry the reactant into the cell. 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.