| abstract |
Provided is an electrochemical capacitor which has basic performance as a capacitor, has a high capacity without using a separator and has excellent charge / discharge characteristics, and at the same time has excellent safety and reliability, and is inexpensive. [MEANS FOR SOLVING PROBLEMS] A specific polyether copolymer and electrolyte salt solution is appropriately selected as an electrolyte between a negative electrode and a positive electrode, and sandwiched between both electrodes, thereby providing basic performance as a capacitor and high capacity. An electrochemical capacitor with excellent charge / discharge characteristics, as well as safety and reliability, and low cost. [Selection figure] None |