408 Fuel Cells
liquid form similar to other liquid fuels like gasoline and diesel, and this
makes DMFC compact and suitable for portable and mobile applications
such as in laptop computers as a battery substitute.
One of the major issues with DMFC is the high mobility or the so-called
methanol crossover through the Naon membrane from the anode side to
the cathode side. Methanol crossover causes lower utilization, affects the
cathode oxidation reaction, and hence lowers the efciency of the fuel cell.
The crossed-over methanol reacts with oxygen and this lowers the oxygen
concentration available for the electrochemical reduction reaction at the
cathode. The direct methanol combustion reaction at the cathode generates
additional heat, causing ...