The storage of electric energy is a difficult problem which can take on various forms depending on its applications and the ensuing constraints. If we take out “mechanical” energy storage (for instance, the kinetic e. AccumulatorsBatteriesCapacitorsConductivityDaniell. The storage of electric energy is a difficult problem which can take on various forms depending on its applications and the ensuing constraints. If we take out “mechanical” ene. 3.2.1. CapacitorsCapacitors are components that ensure a (low) storage of electrostatic energy between two metallic frames (electrodes) subject to a differ. 3.3.1. HistoryThe first cell is obviously the Voltaic cell which has been implemented by Volta in 180017. It was made of a juxtaposition of metal discs (in thi. 3.4.1. Batteries3.4.2. Dedicated integrated circuitsThe manufacturers of semi-conductors have developed a range of components dedicated to pow.