Clays have been used for many centuries in the design of ceramics, pottery or even in construction.clay More recently, materials science researchers are working on the integration of clays as so-called active fillers in polymers.

In the form of ceramics, they can be used in the design of battery electrodes. They are then present in very small quantities and often associated with different metals and polymers constituting electrodes.

Clays can contain ions. Their arrangement in sheets allows certain clays to have a large developed adsorption surface.

This makes it possible to envisage its use in an unprecedented way in electrochemistry for the production of new components or elements for the storage and production of electrical energy.