Air is fed into the cell at the positive pole, i.e. the cathode. The oxygen molecules (O2
) in the air take up electrons from the cathode material. They move through the electrolyte as negatively charged ions to the anode, i.e. the negative pole, where they react with the hydrogen (H2
) to form water (H2
O). The surplus electrons are released in this process, utilized as electric current by a consumer and fed into the cycle again via the cathode.
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