| abstract |
The present invention relates to a high-output energy storage device for high-speed charging and discharging, which can improve the DC-ESR characteristics by adding activated carbon to an anode or a cathode and thereby prevent lifetime from being lowered when a high- A cylindrical case; A spool disposed inside the cylindrical case; And an electrolyte stored inside the cylindrical case, wherein the winding body is formed by winding at least one anode foil and at least one cathode foil and at least one separator, wherein at least one anode foil is formed with a cathode material on its surface, The cathode foil is formed to be disposed to face the anode material, and at least one separator is disposed between the anode foil and the cathode foil. The cathode material is formed by mixing activated carbon, NMC, LCO, and conductive material, Activated carbon, LTO, and a conductive material. |