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Spikeman197
2 years ago

A battery is a ‘dry’ galvanic cell. It converts chemical energy into electrical energy.

At the anode (here the MinusPol), a substance is oxidized, whereby it emits electrons. These flow through cables to the PlusPol (here the cathode) where another substance is reduced.

In the end, therefore, a redox reaction with at least two substances takes place.

Kelec
2 years ago

In the interior, a chemical process takes place which leads to electrons moving through the connections.

https://de.wikipedia.org/wiki/Galvanian_cell

Essentially there is a chemical imbalance which can only be dissolved by absorbing or releasing particles. However, because of a separator they cannot move directly, but the electrons must move outside the element to the other side.

In the case of a lemon or potato battery, it is, for example, that the imbalance exists due to the metals, but these cannot dissolve directly, but have to become ions for which they have to absorb or release electrons.

In industrially used batteries there is additionally a membrane which only allows certain ions to pass, which prevents the battery from being discharged.