Abstract:
A novel dithiafuvalenes compound, a method for preparing the same compound, and a dye-sensitized solar cell using dye comprising the same compound are provided to form the dye-sensitized solar cell having various kinds of colors. A dye-sensitized solar cell includes a semiconductor electrode(10), a facing electrode(20), and an electrolyte solution(30) inserted between the semiconductor electrode and the facing electrode. The semiconductor electrode is formed with a transparent conductive glass substrate(12) and a nano-particle metal oxide layer(14) formed on the transparent conductive glass substrate. The facing electrode includes a conductive glass substrate(22) and a platinum layer(24).
Abstract:
나노입자(nano-particle)가 충진된 상반전(phase inversion) 고분자 전해질 제조 방법을 제시한다. 본 발명에 따르면, 고분자 매트릭스(polymer matrix)와 무기 충진제를 용매에 용해시켜 만든 슬러리(slurry)를 캐스팅(casting)한 직후 즉시 흐르는 물 속에 함침하여 내부 기공이 크게 발달된 다공성 고분자 막 형성하고, 고분자 막에 전해액을 함침시켜 고분자 전해질을 제조한다. 이에 따라, 고용량 소형 리튬(Li) 2차전지에 적용하여 우수한 전지 특성을 얻을 수 있는 고분자 전해질을 제공할 수 있다. 리튬 2차전지, 충진, 캐스팅, 상반전 기법, 폴리머 매트릭스
Abstract:
염료감응 태양전지의 나노 입자 산화물 전극 형성 방법을 제공한다. 본 발명은 산성 또는 염기성에서 분산이 잘되는 나노 입자 산화물 콜로이드 용액에 각각 염기성 수용액 및 산성 용액을 첨가하여 산-염기 반응에 의해 염 형태의 나노 입자 산화물 페이스트를 형성한다. 이어서, 상기 나노 입자 산화물 페이스트를 기판에 코팅한 후, 150℃ 이하의 저온에서 건조시켜 염료감응 태양전지의 나노 입자 산화물 전극을 형성한다. 이에 따라, 본 발명은 고분자를 첨가하지 않고도 점도가 높은 저온코팅용 나노 입자 산화물 페이스트를 산-염기 화학에 기초하여 제조할 수 있고, 이를 통하여 저온에서도 나노 입자 산화물 전극을 형성할 수 있다.
Abstract:
PURPOSE: A dye-sensitized solar cells including titanium silicalite-2 is provided to improve photo conversion efficiency by stabilizing a photocurrent characteristic while increasing photocurrent without reducing a photovoltage. CONSTITUTION: A semiconductor electrode(10) includes a mixture layer(14) of a transition metal oxide and titanium silicalite-2. An electrolyte solution(30) is interposed between the semiconductor electrode and an electrode(20) confronting the semiconductor electrode. The semiconductor electrode is composed of a conductive transparent substrate and the mixture layer coated on the transparent substrate. The semiconductor electrode further includes a dye molecule layer chemically absorbed to the transition metal oxide.
Abstract:
PURPOSE: A preparation method of VOPO4.2H2O used as a cathode material for lithium secondary batteries by ultrasonication is provided, which offers much shortened reaction time and fined particles compared with conventional method. CONSTITUTION: The preparation method of VOPO4.2H2O comprises the steps of: mixing V2O5, H3PO4 and H2O in a molar ratio of 1 : 40-50 : 500-610; ultrasonicating the mixture in a strength of 70-100W/cm¬2 for 10-15min; washing and decompression filtering; drying at room temperature. The resultant VOPO4.2H2O has 1-3micrometer size, 3.6V voltage and 135mAh/g discharge capacity. Also, the composition for a cathode material for lithium secondary batteries is prepared by mixing VOPO4.2H2O, acetylene black and polyethylene tetrachloride in a weight ratio of 60-80 : 15-25 : 5-15.
Abstract:
PURPOSE: A super capacitor for oxidation/restoration and a method of fabricating the capacitor are provided to remarkably reduce interfacial resistance and to simplify a capacitor fabrication process. CONSTITUTION: An electric active material(302) containing polyaniline doped with lithium is fabricated. The electrode active material is attached to a charge collecting layer(402) to fabricate an electrode plate. A polymer separator(501) is placed between two electrode plates and attached to the electrode plates. The electrode active material is directly coated on the charge collecting layer and dried to form the electrode plate. The polymer separator is formed of a mixture of acetone and PVDF dissolved in the acetone.
Abstract:
PURPOSE: Provided are a polyelectrolyte filled with titania having size of nanometer, having high ion conductivity and low interfacial resistance, and a method for producing the same. CONSTITUTION: The polyelectrolyte is produced by the steps of (i) dissolving a copolymer of vinylidene fluoride and hexafluoropropylene, and titania particles of nanometer size in solvent, so as to form a polymer film; and (ii) impregnating the polymer film with electrolyte solution. The solvent is acetone or tetrahydrofuran. The electrolyte solution is a mixture of lithium salt and an organic solvent. The lithium salt is at least one selected from the group consisting of LiClO4, LiBF4, LiAsF6, LiCF3SO3 and LiN(CF3SO2)2. The organic solvent is selected from the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, and mixture thereof.
Abstract translation:目的:提供一种填充有纳米尺寸,具有高离子传导性和低界面电阻的二氧化钛的聚电解质及其制造方法。 构成:通过以下步骤制备聚电解质:(i)将偏二氟乙烯和六氟丙烯的共聚物和纳米尺寸的二氧化钛颗粒溶解在溶剂中,以形成聚合物膜; 和(ii)用电解质溶液浸渍聚合物膜。 溶剂是丙酮或四氢呋喃。 电解质溶液是锂盐和有机溶剂的混合物。 锂盐是选自LiClO 4,LiBF 4,LiAsF 6,LiCF 3 SO 3和LiN(CF 3 SO 2)2中的至少一种。 有机溶剂选自碳酸亚乙酯,碳酸亚丙酯,碳酸二甲酯,碳酸二乙酯,碳酸甲乙酯及其混合物。
Abstract:
PURPOSE: A method for forming polyaniline powder having lithium salt doped, and a method for preparing electrode active material and a super capacitor using it are provided to form polyaniline conductive polymer powder having lithium salt doped and prepare electrode active material and a super capacitor using the polyaniline conductive polymer powder. CONSTITUTION: First, non-conductive polyaniline powder is prepared. Then, lithium salt solution is prepared. Next, the non-conductive polyaniline powder and the lithium salt solution are mixed, whereby lithium salt is doped into the non-conductive polyaniline powder. Then, the polyaniline powder having lithium salt doped is separated from the lithium salt solution.
Abstract:
PURPOSE: A dry polymer electrolyte membrane containing the capsulated electrolyte solution, its preparation method and a method for preparing a lithium polymer battery using the membrane are provided, to improve the ion conductivity and the mechanical properties of a polymer electrolyte by breaking a microcapsule physically to disperse the electrolyte solution inside the microcapsule into the dry polymer membrane. CONSTITUTION: The dry polymer electrolyte membrane(1A) comprises a supporter polymer; and an electrolyte storing means which is mixed with the supporter polymer and where an electrolyte solution is filled. Preferably the storing means is a capsule, and the electrolyte solution is an electrolyte solution containing a lithium salt. The preparation method of the electrolyte membrane comprises the steps of preparing the electrolyte storing means filled with an electrolyte solution; mixing an organic solvent with a supporter polymer to form the polymer slurry; distributing the storing means inside the polymer slurry; spreading the polymer slurry to form a storing means-dispersed polymer electrolyte; and volatilizing the organic solvent in the polymer electrolyte to prepare a dry polymer electrolyte membrane(1A).
Abstract:
본 발명은 나노입자 루타일(rutile) 산화티타늄(TiO 2 )을 이용한 염료감응 태양전지 제조에 관한 것으로, 실온에서 사염화티타늄(TiCl 4 )을 가수분해하여 루타일 구조의 산화티타늄 분말을 얻은 다음, 산화에틸렌고분자(poly ethylene oxide) 및 에틸렌글리콜고분자(poly ethylene glycol)가 혼합된 수용액에 재 분산시키고, 불소가 도핑된 투명 전도성 유리 기판에 코팅한 다음, 공기 중에서 열처리하여 10 ㎛ 내지 12㎛ 두께의 균열이 없는 루타일 산화티타늄 후막 필름을 제조하고, 루테늄계 염료분자가 용해되어 있는 용액 중에 열처리된 필름을 함침하여 염료분자가 산화물 표면에 흡착된 루타일 산화티타늄 전극을 제조한 다음, 열가소성 고분자를 이용하여 플라티늄(Pt) 박막 전극과 접합시킨 후, 모세관 현상을 이용하여 두 전극 사이에 요오드계 산화-환원 액체전해� ��을 주입하여 태양전지를 제조한다. 이에 따라 균열이 없는 나노입자 루타일 산화티타늄 후막필름을 염료감응 태양전지의 전극으로 사용하는 것이 가능하여 태양전지의 제조원가를 절감시킬 수 있다.