Abstract:
PURPOSE: Provided is a synthetic method of amorphous vanadium oxide(V2O5) used as an active material of lithium secondary battery by reacting NH4VO3 (precursor) solution with acids. Accordingly, the resultant vanadium oxide has electrochemical stability and excellent cathode characteristics. CONSTITUTION: The amorphous vanadium oxide is synthesized by the following steps of: dissolving 0.05-0.5M of NH4VO3 precursor into water at 50-200deg.C for an aqueous NH4VO3 solution; adding an acid having 5-70% of purity, selected from HNO3, HCl, H2SO4, H3PO4, etc. to the NH4VO3 solution until pH of the NH4VO3 solution arrives at pH0-4; doping the acidified NH4VO3 solution with metal(Ag or Cu) powder to be vanadium oxide doped with 0.01-0.5M of metal; precipitating amorphous vanadium oxide and filtering; and optionally adding water and stirring to get vanadium oxide gel with large surge surface area and large quantities of pores; drying at 80-120deg.C in an oven, or by using solvent exchange or supercritical fluid.
Abstract translation:目的:提供通过使NH4VO3(前体)溶液与酸反应而用作锂二次电池的活性物质的无定形氧化钒(V2O5)的合成方法。 因此,所得钒氧化物具有电化学稳定性和优异的阴极特性。 构成:通过以下步骤合成无定形氧化钒:将0.05-0.5M的NH4VO3前体溶解在水中,在50-200℃下用于NH 4 VO 3溶液; 向NH4VO3溶液中加入选自HNO 3,HCl,H 2 SO 4,H 3 PO 4等纯度为5-70%的酸,直到NH4VO3溶液的pH达到pH4-4; 用金属(Ag或Cu)粉末掺杂酸化的NH4VO3溶液为掺杂有0.01-0.5M金属的氧化钒; 沉淀无定形氧化钒和过滤; 并加入水和搅拌,得到氧化钒凝胶,表面积大,孔数大; 在烘箱中干燥80-120℃,或使用溶剂交换或超临界流体。
Abstract:
A method of manufacturing a conducting polymer film including dissolving a lithium salt in an organic solvent; after the lithium salt is completely dissolved in the organic solvent, dissolving a conducting polymer in the organic solvent by adding the conducting polymer little by little in many separate doses into the organic solvent until obtaining a deep blue colored solution; and leaving the deep blue colored solution as it stands over seven days and coating it on a flat surface; and evaporating the solvent from the coated solution. It is possible to work the conducting polymer film in a very thin membrane and to control the thickness as required, since the polymer film can be formed directly from a solution. Furthermore, it is also possible to control the conductivity of the polymer film by varying the type of salts as used and the concentration thereof, and thus its applicability is very diverse as the purpose of using them, for example in electronic/electric components.
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).