Abstract:
PURPOSE: A polymer electrolyte is provided to increase long time stability, chemical durability, and physical strength thereby satisfying high stability and high battery properties during the operation of a fuel cell. CONSTITUTION: A polymer electrolyte comprises a hydrocarbon based proton-conducting polymer having a pendant chain including chemically combined phosphate group. The manufacturing method of the polymer electrolyte comprises: a step of obtaining a mixture including the hydrocarbon based proton-conducting polymer, a linker compound, a phosphoric acid source compound, and a transition metal-containing catalyst; and a step of obtaining the hydrocarbon based proton-conducting polymer having a pendant chain including chemically combined phosphate group by reacting the mixture in a microwave reactor.
Abstract:
A reactive porogen based on organic noncyclic-polyol, and ultra-low dielectric materials prepared by using the same porogen are provided not to remain carbon residue after semiconductor-manufacturing process, and produce ultra-low dielectric materials having enhanced mechanical properties based on the same porosity and small size of pores, so that the ultra-low dielectric materials are useful as interlayer insulating film of next generation semiconductor for copper wiring. The reactive porogen is prepared by replacing the terminal hydroxy group of organic noncyclic-polyol by alkylalkoxysilane, wherein the organic noncyclic-polyol is completely pyrolyzed at 350-500 deg.C not to remain carbon residue; and the organic noncyclic-polyol is erythritol represented by the formula(1): (HOH2C)3C-CH2-OR or petaerythritol organic compound represented by the formula(2): HOCH2[CH(OH)]nCH2OH, wherein R is H, CH2C(CH2OH)3 or CH2C(CH2OH)2CH2OCH2C(CH2OH3), and n is an integer from 2 to 4. The ultra-low dielectric material composition comprises 10-90 volume% of organic or inorganic silicate precursor as an organic silicate matrix and 10-90 volume% of the porogen as a porogenic template, wherein the matrix is polymethylsilsesquioxane monopolymer or copolymer. The ultra-low dielectric materials are prepared by preparing a thin layer with the ultra-low dielectric material composition, and sol-gel reacting and heat-treating the thin layer.
Abstract:
본 발명은 술폰산기를 가지는 실세스퀴옥산을 이용한 양성자 전도성 고분자 나노 복합막에 관한 것으로서, 더욱 상세하게는 화학적으로 결합된 술폰산기를 가지는 케이지 구조의 실세스퀴옥산과 불소계 양선자 전도성 폴리머가 혼합되어 있어서 양성자 전도도가 우수하고 기계적 물성이 현저하게 개선된 양성자 전도성 고분자 나노복합막에 관한 것이다.
Abstract:
PURPOSE: A hydrocarbon proton-conductive polymer membrane is provided to obtain excellent electrochemical, mechanical, and thermal properties and to have superior proton conductivity at a high temperature and a high pressure. CONSTITUTION: A hydrocarbon proton-conductive polymer membrane includes a hydrocarbon polymer having a cation exchanger and a silane compound having an amino group which is substituted to phosphoric acid. A method for manufacturing the hydrocarbon proton-conductive polymer membrane comprises the following steps: dissolving the hydrocarbon polymer having a cation exchanger and a silane compound in an organic solvent; forming a polymer membrane by drying a polymer solution after mixing the polymer solution in which the silane compound is dispersed; combining the silane compound and the cation exchanger by heating the polymer membrane; and giving ion conductivity by heating the polymer membrane in phosphoric acid solution.
Abstract:
The present invention relates to an apparatus for simultaneously manufacturing high-concentration aqueous solution of sodium hypochlorite and low-concentration aqueous solution of sodium hypochlorite, the apparatus comprising: an electrolytic cell having an anode chamber and a cathode chamber formed by a membrane inside, wherein the anode chamber receives salt water from a salt water tank and the cathode chamber receives water from a water tank for electrolysis; an anode water storage tank for storing anode water generated in the electrolytic cell; a sodium hydroxide aqueous solution storage tank for storing the aqueous solution of sodium hydroxide generated in the electrolytic cell; a high-concentration sodium hypochlorite generation tank connected to the anode water storage tank to receive chlorine gas from the anode water storage tank, connected to the sodium hydroxide aqueous solution storage tank to receive the aqueous solution of sodium hydroxide and thus generating the high-concentration aqueous solution of sodium hypochlorite by making the chlorine gas react with the aqueous solution of sodium hydroxide; a high-concentration sodium hypochlorite aqueous solution storage tank for storing the high-concentration aqueous solution of sodium hypochlorite generated in the high-concentration sodium hypochlorite generation tank and supplying the high-concentration aqueous solution of sodium hypochlorite to raw water; an auxiliary sodium hydroxide aqueous solution storage tank for storing the aqueous solution of sodium hydroxide with higher concentration than that of the aqueous solution of sodium hydroxide; and an auxiliary low-concentration sodium hypochlorite generation tank for receiving anode water from the anode water storage tank, receiving the high-concentration aqueous solution of sodium hydroxide from the auxiliary sodium hydroxide aqueous solution storage tank and thus generating low-concentration aqueous solution of sodium hypochlorite and supplying the low-concentration aqueous solution of sodium hypochlorite to the raw water.
Abstract:
The present invention relates to a polymer electrolyte for a lithium secondary battery, and more specifically, to a polymer electrolyte for a lithium secondary battery and a lithium secondary battery including the polymer electrolyte. The polymer electrolyte for a lithium secondary battery according to one embodiment of the present invention includes a polymer matrix, lithium salt, and a polyhedral silsesquioxane of a cage structure. [Reference numerals] (AA) Heat flux[W/g]; (BB) 50 wt% PEG-polyhedral silsesquioxanes; (CC) 20 wt% PEG-polyhedral silsesquioxanes; (DD) 10 wt% PEG-polyhedral silsesquioxanes; (EE) 5 wt% PEG-polyhedral silsesquioxanes; (FF) Temperature[°C];
Abstract:
본원은, 화학적으로 결합된 인산기를 가지는 고분자 전해질, 그의 제조 방법, 상기 고분자 전해질을 포함하는 전도성 고분자막, 및 그를 이용한 막-전극 어셈블리와 이를 포함하는 연료전지에 관한 것으로서, 본원에 의하여 인산기가 화학적으로 결합된 양성자 전도성 고분자를 포함하는 고분자 전해질 및 양성자 전도성 고분자막을 제조하는 경우, 종래 인산이 도핑된 전도성 고분자막에 비하여 장기 안정성에서 우수하고 화학적 내구성 및 기계적 강도가 모두 향상되어, 상기 전도성 고분자막을 이용하여 제조된 연료전지는 작동 동안 고안정성 및 높은 전지 성능을 확보할 수 있다.