Abstract:
PURPOSE: A poly(arylene ether) copolymer having a cation exchanger is provided to have excellent physical properties, ion exchanging ability and metal ion adsorption ability, and to have excellent processability, thereby capable of being molded to various shape. CONSTITUTION: A poly(arylene ether) copolymer is in chemical formula 1. A manufacturing method of the poly(arylene ether) copolymer comprises: a step of copolymerizing a quioxalines compound in chemical formula 2-c, one or more compounds selected from compounds in chemical formula 3-b, and one or more compounds selected from compounds in chemical formula 4-b; and a step of introducing cation exchange group, which is a sulfonate group(-SO3^-M^+), a phosphate group(-PO3^-M^+), or carboxylate group(-COO^-M^+) into the copolymerized polymer.
Abstract:
본 발명은 입방 모양 PtCo 나노합금 촉매의 제조방법에 관한 것으로서, 더욱 상세하게는 백금전구체, 코발트전구체, 표면안정제 및 환원제를 용매에 용해시킨 뒤 가열을 하여 입방(cubic) 모양의 PtCo 나노합금을 제조하고, 이를 탄소 지지체에 흡착시킨 후 표면안정제를 제거하여 입방 모양 PtCo 나노합금 촉매를 제조하는 것을 특징으로 한다. 본 발명의 입방 모양 PtCo 나노합금 촉매의 제조방법은 간단한 공정으로 균일한 크기와 입방 모양을 가진 나노입자의 제조가 가능하며, 나노입자의 뭉침에 의한 모양 변화, 표면적 변화 및 조성 변화를 방지하여 고효율의 연료전지 개발에 유용하게 적용할 수 있다. 입방모양, 백금, 코발트, 표면안정제, 나노합금, 연료전지
Abstract:
A method for the preparation of porous graphite carbon with excellent crystallinity from sucrose as a carbon precursor is provided to improve crystallinity and obtain porosity by allowing a metal precursor to induce a catalytic action in the polymerization process and carbonization process of the carbon precursor, thereby increasing the polymerization degree of a polymer and forming a polymer structure facilitating the formation of crystalline carbon. A method for the preparation of porous graphite carbon with excellent crystallinity comprises: a first step of dispersing sucrose, a transition metal precursor, and silica particles into distilled water and hydrothermally treating the sucrose, transition metal precursor, and silica particles to prepare a polymerized polymer; a second step of drying the polymerized polymer obtained after the hydrothermal treatment, and heat-treating the polymerized polymer at 700 to 1500 deg.C under vacuum or an inert gas flow to prepare a complex; and a third step of treating the complex with a fluoric acid or sodium hydroxide solution, and washing and filtering the complex treated with the fluoric acid or sodium hydroxide solution to prepare graphite carbon.
Abstract:
A method of manufacturing an electrolyte reinforced composite membrane with a multilayer structure is provided to manufacture a thin electrolyte reinforced composite membrane having excellent hydrogen ion conductivity. A method of manufacturing an electrolyte reinforced composite membrane with a multilayer structure comprises: a first step of primarily stretching a film; a second step of repeatedly performing 2 to 10 times a process of impregnating the primarily stretched film with an electrolyte, drying the impregnated film at a temperature of 80 to 130 deg.C, and secondly stretching the dried film to form a matrix layer; a third step of coating the electrolyte on upper and lower portions of the matrix layer and drying the electrolyte that has been coated on the upper and lower portions of the matrix layer at a temperature of 100 to 150 deg.C to form upper and lower electrolyte coating layers; and a fourth step of hot pressing the matrix layer having the upper and lower electrolyte coating layers formed on the upper and lower portions thereof at a temperature of 120 to 150 deg.C. The electrolyte is perfluorinated ionomer, or a mixed solution of perfluorinated ionomer and heteropoly acid. The film has a porosity of 80 to 90% and an internal pore size of 150 to 200 nm.
Abstract:
본발명은폴리아릴렌계중합체, 이의제조방법및 이를이용한연료전지용고분자전해질막에관한것이다. 본발명에따른폴리아릴렌계중합체는친수부의측쇄길이가길면서도술폰산기가특정부분에다중으로치환되어밀집되도록설계된고분자로서, 고분자막 형성시이온채널형성을좋게함과동시에, 특히중합체의주쇄가산소연결부(-O-)가아닌탄소-탄소직접결합에의해형성되어친수부의화학적안정성및 수분에대한우수한치수안정성을확보할수 있다. 또한, 본발명의제조방법에따라보다단순화된방법으로상기중합체를제조할수 있고, 상기중합체를이용하여제조된고분자전해질막은수분함량이낮은환경에서도높은수소이온전도도를나타낼뿐만아니라수분에장시간노출되어도높은치수안정성을나타내는등 연료전지용고분자전해질막으로서의성능이우수하고, 특히장기내구성이우수한전해질막을제공할수 있다.
Abstract:
본 발명은 이온성 액체가 화학적으로 결합된 고분자 전해질막 및 이를 이용한 연료전지에 관한 것으로, 보다 상세하게는 신규한 폴리(스티렌-블록-2-히스타민 메틸부틸렌 아크릴레이트) 블록 공중합체에 이온성 액체를 화학 반응시켜 결합된 고분자 전해질막을 제조함으로써, 고온 및 무수 환경하에서도 높은 수소이온 전도도를 나타내고, 전기 화학적 안정성 및 열적 안정성이 우수한 효과가 있으며, 이를 이용하여 고온 및 무가습 바이오 연료전지에 활용 가능한 이온성 액체가 화학적으로 결합된 고분자 전해질막 및 이를 이용한 연료전지에 관한 것이다.