Abstract:
본 발명은 기판에 음의 바이어스 전압을 인가하면서 상온에서 상기 기판 상에 양극 활물질을 증착시켜, 열처리 공정을 거치지 않고 결정화된 양극 박막을 형성시키는 것을 특징으로 하는, 전기 화학적 특성이 우수한 전 고상 박막전지용 양극 박막의 제조방법, 이러한 방법으로 제조된 양극 박막 및 이를 이용한 전 고상 리튬 박막전지에 관한 것이다.
Abstract:
PURPOSE: A current collector coated with a metal, an electrode employing the current collector and a lithium battery containing the electrode are provided to improve the conductivity and to allow the potential distribution on the surface of an electrode to be maintained uniformly, thereby enhancing the utilization rate of an electrode and the cycle characteristic and the charge/discharge characteristic of a battery. CONSTITUTION: The current collector is a foil, a punched foil, an expanded foil or a porous plate made of copper, nickel, aluminum or titanium, and whose both faces are coated with a metal with a thickness of several nm to several micrometers uniformly. Preferably the metal coating the current collector is selected from the group consisting of Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Si, Sb and their alloys. The electrode comprises a lithium electrode made by coating the current collector with lithium; a carbon-coated carbon electrode; and a metal compound-coated metal compound electrode. The lithium battery comprises a cathode and an anode according to the electrode; a polypropylene or polyethylene separation membrane; and a polymer electrolyte or a solid electrolyte.
Abstract:
PURPOSE: Provided is a preparation method of LiCoO2 powder with nanosize particles and homogeneous particle size distribution by modifying the surface of (Li,Co)-precursors as starting materials and thermal treating. CONSTITUTION: The nanosize LiCoO2 powder is prepared by the following steps of: preparing (Li,Co)-precursors, starting materials, by dissolving Li-acetate and Co-acetate in water and freeze-drying mixed solution; surface-modifying (Li,Co)-precursor powder containing 100-130% of Li, by mixing precursor powder with soluble salt such as K2SO4, (NH4)2CO3, NaCl or KCl in a weight ratio of 6:1 through the mechanical process such as ball milling; heating to 400deg.C at 3deg.C/min and holding for 6hrs to form low-temperature polymorph, and then heating to 800deg.C and holding for 12hrs to get LiCoO2 powder with high-temperature polymorph; washing obtained powder with water to remove soluble salt of the surface of LiCoO2 powder. The resultant LiCoO2 powder is applied to the preparation of positive electrodes and metal oxides powder.
Abstract:
PURPOSE: A method for coating a parylene polymer protection layer with good water resistance, heat resistance and chemicals resistance on a plastic card and its coating cartridge are provided, to improve the adhesion strength of the parylene polymer layer to the substrate. CONSTITUTION: The method comprises the steps of optionally washing a plastic card with isopropyl alcohol and highly pure water; optionally coating any one metal selected from the group consisting of Al, Cu, Ni and Pt on the surface of the plastic card; dipping a plastic card into the solution containing xylene and 1-15 wt% of trichlorovinylsilane to pretreat the card; optionally drying the card(substrate) sufficiently; and condensing the pyrolyzed vapor phase parylene monomer on the surface of a substrate to make the parylene polymer be coated on the surface. Also the method comprises the steps of coating a Li thin film on the some part of a plastic card; and condensing the pyrolyzed vapor phase parylene monomer on the surface of a substrate to make the parylene polymer be coated on the surface.
Abstract:
The present invention provides a method for diagnosing a biomarker and a biomarker diagnosis kit using a magnetic particle and a quantum dot for quantitative analysis. The method for diagnosing a biomarker comprises; (i) a step of providing magnetic particles in which a first antibody capable of collecting a biomarker is fixated on the surface using a linker; (ii) a step of providing quantum dots in which a second antibody capable of detecting the biomarker is fixated on the surface; (iii) a step of targeting and sandwiching the biomarker by the magnetic particles and the quantum dots; (iv) a step of selectively separating the quantum dots which targets and sandwiches the biomarker between the quantum dots; and (v) a step of quantifying the concentration of the biomarker by measuring the optical density or fluorescent density of the separated quantum dots.
Abstract:
본 발명은 집전체 상에 10Å - 100 ㎛ 두께의 리튬층 또는 리튬 합금층과, 1Å - 10 ㎛ 두께의 다공성 금속층 또는 다공성 탄소층이 순차 적층된 다층 구조의 리튬 전극, 이의 제조방법 및 이를 포함하는 리튬전지를 제공한다. 보다 구체적으로는, 구리 또는 니켈 집전체 상에 10Å - 100 ㎛ 두께의 리튬층 또는 리튬 합금층과 1Å - 10 ㎛ 두께의 다공성 금속층 또는 다공성 탄소층을 차례로 형성시키는 것에 의하여 제조되는 다층 구조의 리튬 전극, 이의 제조방법 및 이를 포함하는 리튬전지를 제공한다.
Abstract:
PURPOSE: A lithium-metal composite electrode, its preparation method and a lithium battery using the electrode are provided, to improve the conductivity of an electrode and to maintain the potential distribution of the surface of an electrode, thereby enhancing the utilization rate, the cycle lifetime and the charge/discharge efficiency of a battery. CONSTITUTION: The lithium-metal composite electrode comprises the mixture of lithium particle or lithium alloy particle and a metal. The metal is selected from the group consisting of Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Si, Sb and their alloys. The lithium alloy is an alloy of the metal selected from the group consisting of Al, Sn, Bi, Si, Sb, B and their alloys, and lithium. The method comprises the steps of evaporation-depositing the lithium or lithium alloy and the metal on the current collector simultaneously by using the thin film making technique; and compressing the deposited one with a pressure of 10-100 kg/cm¬2.
Abstract:
본 발명은 폴리프로필렌, 폴리에틸렌, 폴리비닐리덴플로라이드 또는 부직포 등의 분리막의 한 면에 박막제조기술에 의하여 리튬과 금속이 다층구조 또는 복합구조 형태로 수 ㎛ 내지 수십 ㎛ 두께로 피복되어 분리막과 일체화된 리튬전극을 제공한다. 또한, 상기의 리튬 전극을 이용하여 전지 용량, 고율 충방전 특성 및 싸이클 수명 특성이 향상된 리튬전지를 제공한다.
Abstract:
본 발명은 종래의 AB 5 계 니켈/금속수소 축전지의 한계인 고용량화와 AB 2 계 니켈/금속수소 축전지의 싸이클 수명, 자기방전율, 초기활성화 등의 문제점을 해결하기 위한 것으로서, AB 2 계 수소저장합금에 La을 첨가하고 불소화 처리를 행한 후 전극을 제조한 경우, 일정량의 La이 첨가되면 금속수소전극의 평탄압력이 낮아지고 사용 가능한 수소저장량의 증가에 의해 전극용량의 증가 및 우수한 싸이클 수명, 우수한 급속충방전특성, 또한 안정한 LaF 3 화합물의 형성으로 수소저장합금의 부식이 억제되었기 때문에 자기 방전율이 대폭 감소하고, 전해질에 KF를 일정량 첨가하므로써, 용액에 첨가한 불소가 니켈전극에 작용하여 니켈전극의 용량 및 싸이클 수명을 향상시키도록 한 니켈/금속수소 축전지의 제조방법을 제공한다.
Abstract:
PURPOSE: A positive electrode thin film for an all solid lithium thin film battery, its preparation method and an all solid lithium thin film battery containing the positive electrode thin film are provided, to improve electrochemical properties without heating process. CONSTITUTION: The positive electrode thin film is prepared by vapor depositing a positive electrode active material at a room temperature with impressing a negative bias voltage of 0 V to -70 V (except 0 V) by using a radio-frequency power supply device to a substrate, to form a crystallized positive electrode thin film on the substrate. Preferably the substrate is a silicon substrate, glass, a polymer or a metal substrate with a low melting point; and the positive electrode active material is a composite oxide of lithium and a transition metal. Preferably the positive electrode thin film has an initial discharge capacity of 63 μAh/cm2·μ m and a discharge capacity of 30 μAh/cm2·μm at about 65-300 cycle, and has a microcrystalline structure having a thickness of 200-500 nm and a size of 5-30 nm.