Capacitors with High Specific Power
Electrochemical energy storage devices employ two types of electrodes that differ in the way they store charge. One kind on which electrochemical reactions with the electrolyte occur during charging or discharging has come to be known as faradaic electrode. The other one stores charge without chemical reactions and is non-faradaic. Batteries have a pair of electrodes that store energy by a chemical process. Electric double layer capacitors, electrolytic capacitors, and electrostatic capacitors all store charge physically.