Direct Methanol Fuel Cell Pdf

End of the project goal.

Direct methanol fuel cell pdf. A direct methanol fuel cell dmfc is an electrochemical energy conversion device that converts the chemical energy of liquid methanol into electrical energy directly. 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. A passive air breathing liquid feed direct methanol fuel cell dmfc with no external pumps or other auxiliary devices was designed fabricated and tested with different methanol concentrations. We have developed 1 kw output direct methanol fuel cell dmfc successfully which is the highest output level in the world in this kind of fuel cell.

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. Due to its unique advantages such as a higher energy density facile liquid fuel storage capability and simpler system structure the direct methanol fuel cell has been. About 3 in mass to carry the reactant into the cell. A conventional combustion based power plant generates electricity at efficiencies of 33 to 35 while direct methanol fuel cells can generate electricity at efficiencies up to 60 and even higher with co generation.

Methanol the fuel of dmfcs has such. Three critical challenges from material to system levels. The mea and prototype delivered at the. 3 decrease methanol crossover.

The direct methanol fuel cell dmfc has been considered as the ideal fuel cell system since it produces electric power by the direct conversion of the methanol fuel at the fuel cell anode. 1 reduce noble catalyst loading and cost. Direct methanol fuel cell is still in the development phase and expected to cover major share in the fuel cell market. 2 enhance cathode tolerance of methanol poisoning.

Stationary direct methanol fuel cells dmfcs using pure methanol as the fuel. Direct methanol fuel cell as the next generation power source masakazu ohashi1 the demand for clean power source is increasing for solving environmental issues.