Abstract:
PURPOSE: A composite for an electrode of a supercapacitor, a method for manufacturing a supercapacitor electrode using the composite, and a supercapacitor manufactured by the method are provided to improve the withstand voltage characteristic and high-temperature reliability of a supercapacitor by using one or both of polyimide and poluamideimide as a binder. CONSTITUTION: A composite for an electrode of a supercapacitor comprises activated charcoal powder of 100wt%, a binder 2-20wt%, and a dispersion medium of 200-300wt%. The activated coal powder has a specific surface area of 1000-2500m^2/g and a particle diameter of 0.9-20μm. The binder comprises polyimide and polyamideimide mixed at a weight ratio of 3:7-7:3. The dispersion medium is composed of N-methylpyrolidone.
Abstract:
PURPOSE: A super capacitor and a manufacturing method thereof are provided to increase specific capacitance and energy density by using porous activated charcoal having a plurality of pores as electrode active materials of a cathode and an anode. CONSTITUTION: Porous activated charcoal has a plurality of pores providing paths for inflow or discharge of electrolyte ion. The average interlayer distance of the porous activated charcoal is 3.385-0.445nm. The specific surface area of the porous activated charcoal is 300-1300m^2/g. The porous activated charcoal is used for electrode active materials of a cathode and an anode in a super capacitor to form a separator preventing short circuit between the cathode and the anode.
Abstract:
PURPOSE: A method for manufacturing an active carbon electrode for a super capacitor is provided to control oxygen which is exhausted to a gas by eliminating a functional group including oxygen formed on an activated coal powder surface through a thermal process. CONSTITUTION: Activated coal powder is thermally treated at temperature of 700-1000°C in a nonactive gas atmosphere to eliminate a functional group including oxygen formed on an activated coal powder surface. An electrode material is made by mixing activated coal powder, a binder, a conductive material, and a dispersing medium. A form of an electrode is formed by pressing a cathode material, coating both sides of the cathode material in a metal foil, or rolls the cathode material using a roller to be a form of a sheet and attaching the sheet to the metal foil. The electrode is formed by drying the output of an electrode form at a temperature of 100°C-350°C.
Abstract:
본 발명은, 단락을 방지하기 위한 제1 분리막과, 충전 또는 방전 동작에 따라 양이온의 삽입 또는 탈리가 가능한 물질을 포함하는 양극과, 상기 양극과 음극의 단락을 방지하기 위한 제2 분리막과, 활성탄을 포함하는 음극이 순차적으로 적층되어 코일링된 롤 형태를 이루는 권취소자와, 상기 음극에 연결된 제1 리드선과, 상기 양극에 연결된 제2 리드선 및 리튬 호일이 바닥, 측면 또는 바닥과 측면에 부착된 금속캡을 포함하고, 상기 권취소자는 상기 금속캡 내에 수용되고, 상기 권취소자와 상기 금속캡에 부착된 리튬 호일은 리튬염이 용해되어 있는 전해액에 함침되어 있는 슈퍼커패시터 셀 및 그 제조방법에 관한 것이다. 본 발명에 의하면, 활성탄 전극에 리튬을 용이하게 도핑시킬 수 있고, 활성탄 전극에 리튬이 도핑됨으로써 전위가 낮아지고 단위 체적당 높은 에너지밀도를 가질 수 있다.
Abstract:
PURPOSE: A graphene electrode supercapacitor and a manufacturing method thereof are provided to increase capacity per unit volute of a graphene electrode by adding graphene powder and molasses. CONSTITUTION: A graphene mixture(100') is made by mixing graphene powder, conductive materials, molasse, polytetrafluoroethylene and dispersing medium. The graphene mixture is compressed by a press(130). The compressed molding is sintered at 150 to 400 degrees centigrade.