Abstract:
본 발명은, 전극활물질인 다공성 활성탄 분말과, 상기 다공성 활성탄 분말 100중량부에 대하여 도전재 0.1∼20중량부와, 상기 다공성 활성탄 분말 100중량부에 대하여 불소 함유 바인더 1∼20중량부와, 상기 다공성 활성탄 분말 100중량부에 대하여 전도성 고분자 0.01∼10중량부 및 상기 다공성 활성탄 분말 100중량부에 대하여 분산매 100∼300중량부를 포함하는 슈퍼커패시터 전극용 조성물 및 이를 이용한 슈퍼커패시터 전극의 제조방법에 관한 것이다. 본 발명에 의하면, 성형성이 우수하여 성형시간의 단축이 가능하고, 내구성, 전극 밀도 및 전극의 유연성을 높일 수 있으며, 에너지 밀도가 높아 고용량 특성을 발현할 수 있다.
Abstract:
Provided is a composition for a supercapacitor electrode comprising: porous activated carbon powder; 2 to 20 parts by weight of a conductor per 100 parts by weight of the porous activated carbon powder; 2 to 20 parts by weight of a fluorine containing binder per 100 parts by weight of the porous activated carbon powder; 0.01 to 10 parts by weight of an alkaline organic compound per 100 parts by weight of the porous activated carbon powder; and 100 to 300 parts by weight of a dispersion medium per 100 parts by weight of the porous activated carbon powder; wherein the alkaline organic compound includes one or more elements selected from N, O, and S having lone pair electrons. Also, provided is a method for manufacturing a supercapacitor electrode using the composition. According to the present invention, binding of an electrode of the supercapacitor can be improved by using the alkaline organic compound to improve the binding. Thus, exfoliation or separation of an electrode active material can be suppressed and performance degradation of the supercapacitor can be prevented.
Abstract:
본 발명은, 구형 구조의 입자를 가지며, 상기 입자의 표면 및 벌크에 1∼200㎚의 직경을 갖는 복수의 기공들이 분포되어 다공성을 나타내고, 상기 입자의 평균 입경이 0.5∼10㎛이며, 충전 또는 방전 동작에 따라 상기 복수의 기공들을 통해 상기 입자의 표면 및 벌크 모두에서 이온의 삽입 또는 탈리가 가능한 Li 4 Ti 5 O 12 음극 활물질의 제조방법에 관한 것이다. 본 발명에 의하면, 입자의 표면 및 벌크에 1∼200㎚의 직경을 갖는 복수의 기공들이 분포되어 다공성을 나타내므로 충전 또는 방전 동작에 따라 상기 복수의 기공들을 통해 상기 입자의 표면 및 벌크 모두에서 이온의 삽입 또는 탈리가 가능하고, 0.5∼10㎛ 크기를 갖는 균일한 구형 입자를 가짐으로써 종래의 Li 4 Ti 5 O 12 음극 활물질보다 탭 밀도(겉보기밀도)가 향상되고 음극 제조시에 바인더의 절대 사용량을 감소시킬 수 있으며, 전지에 사용될 경우 다공성 구조로 인하여 전해액과의 반응 활성 사이트를 극대화하여 출력밀도를 개선할 수 있다.
Abstract:
PURPOSE: A positive electrode for a lithium primary battery improves medium to high rate discharging capacity, improves energy density, and minimizes the capacity deviation of discharging in the positive electrode. CONSTITUTION: A positive electrode for a lithium primary battery has a positive electrode sheet, a conductive coating film, a current collector, a conductive coating film, and a positive electrode sheet which are laminated in order. The positive electrode sheet contains a conductive positive active material. The positive electrode sheet has a rolled sheet type shape with a thickness of 100 micron - 2 mm. The current collector has a net structure including a plurality of first frames arranged in a first direction and a plurality of second frames in a second direction. The positive active material includes acetylene black or the mixture of acetylene black and ketchen black.
Abstract:
PURPOSE: A manufacturing method of a transfer paper is provided to offer the transfer paper which is capable of coating regardless of the shape or size of an anode supporter even a bent and controlling the thickness of coating. CONSTITUTION: A manufacturing method of a transfer paper comprises the following steps: printing the anode functional layer paste on the surface of the transfer paper using a screen printing equipment; manufacturing an anode functional layer transfer paper by drying the transfer paper in which the anode functional layer paste is printed at 20-40°C; transferring the electrolyte paste on the anode functional layer transfer paper using the screen printing equipment; and manufacturing a transfer paper for co-firing of the anode functional layer and the electrolyte by drying the anode functional layer transfer paper to which the electrolyte paste is transferred. [Reference numerals] (AA) Electrolyte surface SEM images; (BB) Cathode surface SEM images; (CC) End cell cross section SEM images
Abstract:
PURPOSE: An activated carbon-transition metal oxide composite electrode active material and a manufacturing method thereof have a super capacitor electrode with high specific capacitance and energy density by using an activated carbon-transition metal oxide composite active material as an anode or a cathode. CONSTITUTION: Porous activated carbon powder having multiple porous is prepared. The porous activated carbon powder is oxidized by being precipitated in an acid solution. The acid solution with the oxidized porous activated carbon powder is added in a transition metal oxide precursor solution. A deposit is obtained by titrating an alkali compound in the transition metal oxide precursor solution with the porous activated carbon powder. A material that a transition metal hydroxide and the porous activated carbon are compounded is obtained by selectively separating the deposit. A nanocomposite is obtained by thermally processing the material that the transition metal hydroxide and the porous activated carbon are compounded under oxidizing atmosphere.
Abstract:
PURPOSE: A super capacitor electrode and a manufacturing method thereof are provided to have high non-capacitance and high energy density using a nano complex material in which a transition metal hydroxide is compounded for porosity activated charcoal which provides a path in which a polyelectrolyte ion is inserted or discharged as an electrode active material of an anode or a cathode. CONSTITUTION: A coin type super capacitor is a metal cap (50) as a conductor in which super capacitor electrode is applied. The coin type super capacitor is a separation film (60) of a porous material for preventing insulation and short circuit between super capacitor electrodes. The coin type super capacitor is formed of a gasket (70) for preventing the leakage of an electrolyte and insulation and short circuit. The super capacitor electrode is securely fixed to the metal cap with an adhesive.
Abstract:
PURPOSE: LiFePO4 positive electrode active material for a lithium ion battery is provided to improve tap density(apparent density) and to reduce use amount of a binder when manufacturing a positive electrode for a lithium secondary battery. CONSTITUTION: An LiFePO4 positive electrode active material includes a spherical particle. A plurality of pores with a particle diameter of 2-300 nm are distributed on the surface of the particle or bulk, thereby having porosity. According to charging or discharging operation, the insertion or deintercalation of cations can be possible both on the surface of the particle and bulk. The spherical particle has a porosity of 1-50%, and the specific surface area thereof is 0.1-100 m^2/g.