MIXED CATALYST FOR FUEL CELL, METHOD FOR PREPARING SAME, METHOD FOR FORMING ELECTRODE BY USING SAME, AND MEMBRANE-ELECTRODE ASSEMBLY COMPRISING SAME

Disclosed are a mixed catalyst, a method for preparing same, a method for forming an electrode by using same, and a membrane-electrode assembly comprising same, the mixed catalyst having uniform physical features within a predetermined range, which are suitable for the manufacture of an electrode an...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, Jung Ho, NAM, Kyoungsik, SONG, Kah-Young, PARK, Chanmi, LEE, Jusung, KONG, Nakwon
Format:	Patent
Sprache:	eng ; fre ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	Disclosed are a mixed catalyst, a method for preparing same, a method for forming an electrode by using same, and a membrane-electrode assembly comprising same, the mixed catalyst having uniform physical features within a predetermined range, which are suitable for the manufacture of an electrode and membrane-electrode assembly having desired performance and durability. The mixed catalyst comprises: a first catalyst, which includes a first support and first catalyst metal particles distributed on the first support, and has a first BET surface area and a first total pore volume; and a second catalyst, which includes a second support and second catalyst metal particles distributed on the second support, and has a second BET surface area different from the first BET surface area and a second total pore volume different from the first total pore volume. Sont divulgués un catalyseur mixte, son procédé de préparation, un procédé de formation d'une électrode l'utilisant et un ensemble membrane-électrode le comprenant, le catalyseur mixte ayant des caractéristiques physiques uniformes dans une plage prédéterminée, qui sont appropriées pour la fabrication d'une électrode et d'un ensemble membrane-électrode ayant des performances et une durabilité souhaitées. Le catalyseur mixte comprend : un premier catalyseur qui comprend un premier support et des premières particules métalliques de catalyseur réparties sur le premier support, et présente une première surface BET et un premier volume poreux total ; et un second catalyseur qui comprend un second support et des secondes particules métalliques de catalyseur réparties sur le second support, et présente une seconde surface BET différente de la première surface BET et un second volume poreux total différent du premier volume poreux total. 원하는 성능 및 내구성을 갖는 전극 및 막-전극 어셈블리의 제조에 적합한 소정 범위 내의 물리적 특성들을 균일하게 갖는 혼합 촉매, 그 제조방법, 그것을 이용한 전극 형성방법, 및 그것을 포함하는 막-전극 어셈블리가 개시된다. 상기 혼합 촉매는, 제1 담체 및 상기 제1 담체 상에 분포되어 있는 제1 촉매금속입자를 포함하며 제1 BET 표면적(BET surface area) 및 제1 전체세공부피(total pore volume)를 갖는 제1 촉매; 및 제2 담체 및 상기 제2 담체 상에 분포되어 있는 제2 촉매금속입자를 포함하며 상기 제1 BET 표면적과 다른 제2 BET 표면적 및 상기 제1 전체세공부피와 다른 제2 전체세공부피를 갖는 제2 촉매를 포함한다.