Abstract:
PURPOSE: A manufacturing method of a polybenzimidazole-based polymer is provided to manufacture a polybenzimidazole-based polymer having excellent dimensional stability and mechanical strength even with excellent ion conductivity. CONSTITUTION: A manufacturing method of a polybenzimidazole-based polymer comprises a step of introducing electron withdrawing functional group into a benzimidazole-based polymer. The electron withdrawing functional group is one or more selected from a group consisting of carboxylic acid(-CO2H), cyan(-CN), fluorine (-F) and sulfonic acid. The benzimidazole-based polymer is a sulfonated poly(2,5-benzimidazole)based polymer. An electrolyte membrane comprises the polybenzimidazole-based polymer.
Abstract:
고분자 전해질 연료전지의 운전 시 시동 단계에서 공기보다 연료 가스를 먼저 주입하도록 하면, 고분자 전해질 연료전지의 셀 성능 및 전기화학적 표면적 감소 속도를 늦출 수 있고, 시동과 정지가 반복되는 운전에 있어서 전하 전달 저항 증가 속도를 늦출 수 있다. 이는 고분자 전해질 연료전지의 성능 저하를 완화함으로써 결과적으로 내구성을 향상시키는 것이다. 이에 따르면 고분자 전해질 연료전지의 상용화 특히 전기 자동차의 동력원으로의 상용화에 기여할 수 있다. 고분자 전해질 연료전지, 수소 주입, 공기 주입, 시동, 내구성
Abstract:
본 발명은 술폰화 탄화수소계 고분자 및 술폰화 폴리벤즈이미다졸계 고분자의 블렌드(blend)를 포함하는 고분자 전해질막, 이의 제조방법, 상기 고분자 전해질막을 포함하는 막-전극 접합체 및 연료전지에 관한 것이다. 본 발명에 따르면, 술폰화 탄화수소계 고분자와 블렌드된 술폰화 폴리벤즈이미다졸계 고분자를 통해, 술폰화 탄화수소계 고분자를 포함하는 전해질막의 물성 및 치수안정성을 향상시킬 수 있으며, 궁극적으로 상기 고분자 전해질막을 포함하는 연료전지의 경우, 성능을 효율적으로 향상시킬 수 있다. 고분자 전해질막, 술폰화 폴리벤즈이미다졸
Abstract:
인시츄 핵자기 공명 분석용 토로이드 캐비티 검출기에 장착되는 연료전지용 유로 부재로서, 개방형 유로를 가지는 내측 부재 및 상기 개방형 유로를 밀폐하는 외부 하우징을 포함하는 인시츄 핵자기 공명 분석용 연료전지 구성 부품, 이를 이용한 연료전지 및 연료전지 성능 평가 방법을 제공한다. 이러한 인시츄 핵자기 공명 분석용 연료전지에 의하면 반응물을 전극에 균일하게 공급하고 생성물을 원활히 제거함으로써 누수, 누액을 방지하고, 막전극 접합체의 균일한 압력 분배를 통하여 해당 인시츄 핵자기 공명 분석용 연료전지의 성능을 향상시킬 수 있다. 연료전지, 핵자기 공명, 인시츄분석, 개방형, 밀폐형, 내부유로, 외부 하우징, 물질 전달
Abstract:
PURPOSE: A polymer electrolyte membrane for a fuel cell is provided to improve physical properties and dimensional stability through a sulfonated hydrocarbon polymer and a sulfonated polybenzimidazole polymer. CONSTITUTION: A method for manufacturing a polymer electrolyte membrane for a fuel cell comprises the steps of: (i) respectively synthesizing a sulfonated hydrocarbon polymer and a sulfonated polybenzimidazole polymer; (ii) dissolving the sulfonated hydrocarbon polymer and sulfonated polybenzimidazole polymer in a solvent to prepare a film containing the sulfonated hydrocarbon polymer and sulfonated polybenzimidazole polymer; (iii) drying the film and evaporating a solvent; and (iv) performing acid treatment of the film to prepare a proton electrolyte membrane.
Abstract:
PURPOSE: A method for measuring electrochemical properties of an electrode of a fuel cell is provided to easily detect electrochemical properties in an operation condition of various relative humidity without non-linear data fitting. CONSTITUTION: A method for measuring electrochemical properties of an electrode of a fuel cell comprises the steps of: supplying non-reactive materials to the cathode or anode which is a measurement target electrode of a fuel cell and also supplying a material capable of operating an electrode of an opposite side as a reference electrode to an anode or cathode which is an electrode of an opposite side; and varying alternating frequency at a potential showing an electric dual layer reaction and measuring alternating current impedence of the fuel cell.
Abstract:
PURPOSE: A manufacturing method of a membrane-electrode assembly, a membrane-electrode assembly manufactured therefrom, and a fuel cell including thereof are provided to remarkably improve the porosity, and to enhance the power density of the fuel cell. CONSTITUTION: A manufacturing method of a membrane-electrode assembly comprises the following steps: producing catalytic ink slurry with a catalyst, an ion-conductive polymer, and a solvent; spreading the catalytic ink slurry to a supporting film, and vacuum drying the slurry; and transferring the supporting film to one or both sides of an electrolyte film, to form a catalyst layer on the electrolyte film.
Abstract:
A method for controlling the fuel concentration of s liquid fuel cell is provided to save the electricity used on system operation by making a simple and compact fuel cell system by using a sensor. A method for controlling the fuel concentration of s liquid fuel cell comprises a step of measuring the fuel consumption or consumption velocity of a liquid type fuel battery while changing the operation condition, and determining the fuel consumption or consumption velocity of the fuel; and a step of controlling the fuel concentration of a liquid type fuel battery by controlling the fuel supply amount or the feed rate supplied to the fuel battery corresponding to the fuel consumption or consumption velocity of the fuel.
Abstract:
A bipolar plate for cooling a molten carbonate fuel cell is provided to accomplish effective cooling of a stack while not causing generation of thermal stress or a drop in the efficiency in a cost-efficient manner. A bipolar plate for cooling a molten carbonate fuel cell comprises a cooling gas flow path therein, wherein the cooling gas is an anode cooling gas or cathode cooling gas having a lower temperature than a conventional anode gas(g1) or conventional cathode gas(g2) supplied to the anode(A) or cathode(C) of the molten carbonate fuel cell. The bipolar plate takes the form of an internal manifold. The bipolar plate further comprises an introduction duct through which the cooling gas is guided into the bipolar plate.