Hybrid capacitor

Abstract

Embodiments of the invention provide a hybrid capacitor that includes a cathode, an anode, a separator and an electrolyte solution. The hybrid capacitor includes a first structure including a cathode containing activated carbon and an anode containing lithium, and a second structure including activated carbon layers formed on both surfaces of a current collector.

What is claimed is: 
     
         1 . A hybrid capacitor that includes a cathode, an anode, a separator and an electrolyte solution, the hybrid capacitor comprising:
 a first structure including a cathode containing activated carbon and an anode containing lithium; and   a second structure including activated carbon layers formed on both surfaces of a current collector.   
     
     
         2 . A hybrid capacitor that includes a cathode, an anode, a separator and an electrolyte solution, the hybrid capacitor comprising:
 a first structure including a cathode containing activated carbon and an anode Containing lithium; and   second structures each disposed on both sides of the first structure, the second structure including activated carbon layers formed on both surfaces of a current collector.   
     
     
         3 . The hybrid capacitor according to  claim 1 , wherein the cathode and the anode include a separator provided therebetween. 
     
     
         4 . The hybrid capacitor according to  claim 1 , wherein the first and second structures include a separator provided therebetween. 
     
     
         5 . The hybrid capacitor according to  claim 1 , wherein the cathode is formed by attaching a conductive material, activated carbon, and a binder to both surfaces of a current collector. 
     
     
         6 . The hybrid capacitor according to  claim 5 , wherein the current collector is an aluminum foil. 
     
     
         7 . The hybrid capacitor according to  claim 1 , wherein the anode includes lithium metal layers formed on both surfaces of a current collector. 
     
     
         8 . The hybrid capacitor according to  claim 7 , wherein the current collector is copper foil. 
     
     
         9 . The hybrid capacitor according to  claim 7 , wherein lithium metal layers further include lithium nitride (Li3N) layers formed on outer surfaces thereof. 
     
     
         10 . The hybrid capacitor according to  claim 1 , wherein the second structure is formed by attaching a material containing 5 to 10 wt % of conductive material, 80˜90 wt % of activated carbon, and 5˜10 wt % of binder to both surfaces of the current collector. 
     
     
         11 . The hybrid capacitor according to  claim 1 , wherein the electrolyte solution is a mixture of a lithium salt and a non-lithium salt.