COMPOSITE ELECTROLYTE MEMBRANE HAVING ASYMMETRIC DENSITY GRADIENT FOR FUEL CELL, METHOD FOR MANUFACTURING SAME, MEMBRANE-ELECTRODE ASSEMBLY COMPRISING COMPOSITE ELECTROLYTE MEMBRANE HAVING ASYMMETRIC DENSITY GRADIENT FOR FUEL CELL, AND FUEL CELL COMPRISING SAME

• Main Authors: JEONG, Ji Hong, JUNG, Sung Gi, SEO, Young Guin, KWON, Jeong Oh, JANG, Tae Ho
• Format: Patent
• Language: English; French; Korean
• Published: 12.10.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to a composite electrolyte membrane for a fuel cell, a method for manufacturing same, a membrane-electrode assembly comprising a composite electrolyte membrane, and a fuel cell. In particular, the present invention relates to the composite electrolyte membrane for a fuel cell, the membrane-electrode assembly comprising same, and the fuel cell employing same has excellent performance, wherein the composite electrolyte membrane according to the present invention according to the present invention, is an electrolyte membrane having a different density gradient in the upper portion and the lower portion, and of which the rate of hydrogen gas penetration and impregnation of ionomers can be controlled. La présente invention concerne une membrane à électrolyte composite servant à une pile à combustible, son procédé de fabrication, un ensemble membrane-électrode comprenant une membrane à électrolyte composite, et une pile à combustible. En particulier, la présente invention concerne la membrane à électrolyte composite servant à une pile à combustible, l'ensemble membrane-électrode comprenant la membrane à électrolyte composite, et la pile à combustible l'utilisant présente d'excellentes performances, la membrane à électrolyte composite selon la présente invention étant une membrane à électrolyte présentant un gradient de densité différent dans la partie supérieure et la partie inférieure, et dont la vitesse de pénétration de gaz hydrogène et d'imprégnation d'ionomères peut être régulée. 본 발명에 의한 연료전지용 복합 전해질막, 이의 제조방법, 이를 포함하는 막-전극 접합체, 및 연료전지에 관한 것으로서, 좀 더 구체적으로 설명하면, 본 발명의 연료전지용 복합 전해질막은 상부와 하부의 밀도 구배가 다른 전해질막으로서, 수소 가스 투과율 및 이오노머의 함침율 조절이 가능한 전해질막, 이를 포함하는 막-전극 집합체 및 이를 도입한 성능이 우수한 연료전지에 관한 것이다.