Fuel Cell Type #1: Methanol

The first type of fuel cell we looked at was one based on liquid methanol (CH3OH).


Within such a cell, the following reactions occur:

Anode\mathrm{CH_3OH + H_2O \to 6\ H^+  + 6\ e^- + CO_2}
Cathode\mathrm{\frac{3}{2} O_2 + 6\ H^+  + 6\ e^- \to 3\ H_2O}
Overall reaction\mathrm{CH_3OH + \frac{3}{2} O_2 \to 2\ H_2O + CO_2}


The advantage of a methanol fuel cell is its energy density. A unit of methanol stores far more energy than highly compressed hydrogen and 15 times more than a lithium ion cell. However, they only provide a small amount of power over a longer period of time. Thus, they can only be used for low-demand devices such as cameras, phones, and laptops, but not high-demand devices like vehicles.

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