NOVELTY - The polarizing electrode contains activated charcoal (7,8), electrical conductive particles (9) having average particle diameter less than that of activated charcoal (8), and binder resin (10). The charcoal (8) has electrostatic capacitance larger than that of charcoal (7). The charcoal (8) has average particle diameter less than that of charcoal (7). The contents (A,B) of charcoal (7,8) are 20 wt.% or more and 15 wt.% or more, respectively. The contents (C,D) of electrical conductive particles and binder resin are 15 wt.% or more and more than 2 wt.%, respectively.    USE - Polarizing electrode is used for electrical double-layer capacitor used for backup of electronic device, household appliances and business machines, and power supply for motor vehicles.    ADVANTAGE - The polarizing electrode has improved electrostatic capacitance density and reduced internal resistance.    DETAILED DESCRIPTION - The polarizing electrode contains activated charcoal (7,8), electrical conductive particles having average particle diameter less than that of activated charcoal (8), and binder resin. The charcoal (8) has electrostatic capacitance larger than that of charcoal (7). The charcoal (8) has average particle diameter less than that of charcoal (7). The contents (A,B) of charcoal (7,8) are 20 wt.% or more and 15 wt.% or more, respectively. The total content of charcoal (7,8) is 60-75 wt.%. The contents (C,D) of electrical conductive particles and binder resin are 15 wt.% or more and more than 2 wt.%, respectively. The total amount of charcoal (7,8), binder resin and electrical conductive particles is set to 100 wt.%. The activated charcoal (7) is steam-activated charcoal. The activated charcoal (8) is charcoal activated with alkali, such as metal hydroxide. The electrical conductive particles are carbon black.    DESCRIPTION OF DRAWING(S) - The drawing shows the enlarged view of principle portion of polarizing electrode.    Activated charcoal (7,8)    Acetylene black (9)    Polytetrafluoroethylene resin (10)