An electrolytic capacitor is an electro-chemical device itself. Also, like a battery, if the "electrolyte" is not without solvent then it is a liquid-state devi

An electrolytic capacitor is an electro-chemical device itself. Also, like a battery, if the "electrolyte" is not without solvent then it is a liquid-state device. As opposed to a film & foil capacitor which is a solid-state device. Batteries generate a characteristic cell voltage as a result of a chemical reaction. Capacitors store any voltage up to their maximum rating, electrolytics have higher capacity/size ratio than film & foil due to the chemical help of the electrolyte, but do not generate voltage on their own, only store what is supplied from a power source.