Abstract:
본 명세서에는 안정하면서도 성능이 우수한 고분자 전해질의 재료인 신규한 폴리벤즈이미다졸리움이 제공되며, 상기 폴리벤즈이미다졸리움을 이용하면 불안정한 음이온 교환기의 단점을 보완함으로써, 높은 안정성과 고성능을 갖는 고분자 전해질 막 또는 촉매 바인더를 제공할 수 있는 효과가 있다.
Abstract:
PURPOSE: A method for stabilizing structure of a membrane electrode assembly is provided to improve interface stability between an electrolyte membrane and a catalyst layer, by modifying edge parts of a polymer electrolyte membrane, which are not coated with a catalyst. CONSTITUTION: In a method for stabilizing structure of a membrane electrode assembly, the fuel cell membrane electrode assembly comprises a polymer electrolyte membrane, and a catalyst layer coated on the polymer electrolyte membrane. The method comprises a step of heat-treatment of the part of the polymer electrolyte membrane which includes one or more of an edge region of a polymer electrolyte membrane, a gas inlet region, and an outlet region(20). By the heat-treatment, the interface of the electrolyte membrane and catalyst layer is stabilized.
Abstract:
PURPOSE: An apparatus and a method for sensing fuel concentration, a system apparatus and a method for the fuel recirculation of a fuel cell using the same, and a fuel cell using apparatus using the same are provided to use various materials having low conductivity as the material of an electrolyte film. CONSTITUTION: An apparatus(100) for sensing fuel concentration comprises a unit cell, a stack, and an open circuit voltage meter. The unit cell comprises electrolyte films(10), a reference electrode(13), and a measurement electrode(15). The reference electrode is formed in one side of the electrolyte films, and the measurement electrode is formed in the other side. The stack stacks the electrolyte films. The open circuit voltage meter measures the open circuit voltage of the unit cell or the stack.
Abstract:
다공성탄소재료에 IrO을전해도금하여형성하고이에백금을도포하여다공성백금층을형성한가역연료전지산소전극및 이를포함하는가역연료전지, 그제조방법이개시된다. 해당가역연료전지산소전극에의하면, 가역연료전지산소전극에사용되는 IrO및백금로딩량을낮출수 있음에따라귀금속사용양을줄일수 있으면서도물과산소의물질전달을향상하여우수한가역연료전지성능(우수한연료전지성능및 물전기분해성능)을나타낼수 있다. 또한, 가역연료전지산소전극에적용시 양호한촉매활성을나타낼수 있으면서도탄소부식을줄일수 있다. 또한, 제조과정이매우종래와대비하여단순하며제조비용을크게절감할수 있다.