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Analysis:
At higher temperatures, atoms tend to move faster and are more likely to interact with the
catalysts located on the surface of the membrane. With more interactions, the reaction
accelerates and more electricity can be produced, which is demonstrated by the speed of the fan
motor increasing.
Note: Before you direct warm air towards the fuel cell, direct the airflow to your hands first to
make sure the air is not too hot (Below 60
℃
is preferred).
Conclusions:
(1) Higher temperatures will make it more likely for ethanol molecules to interact with the
catalysts located on the surface of the membrane, which accelerates the speed of the chemical
reaction.
(2) High temperature can also make the membrane more active, so it will demonstrate an
increased ability of proton exchange within the membrane and an increase the speed of the fan
motor. Increasing the power capability of ethanol fuel cells can be done by increasing their
operating temperature, or the temperature of their fuel.
