Secondary battery, power supply system using the same, and method of using the power supply system

摘要

The secondary battery has a current collector built in the reaction vessel and at least one of the positive electrode side and the negative electrode side thereof. The positive electrode side and the negative electrode side are isolated by an ion conductive isolation part. In the reaction vessel, an organic substance that is reversibly oxidized / reduced, excluding metal complexes and radicals, is used in liquid form with a supporting salt as an active material. The active material contained in the liquid is charged and discharged on the surface of the current collector.