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ELECTRODE CATALYST FOR FUEL CELL, PRODUCTION METHOD THEREOF, FUEL CELL ELECTRODE CATALYST LAYER CONTAINING SAID CATALYST, FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY USING SAID CATALYST OR CATALYST LAYER, AND FUEL CELL
ELECTRODE CATALYST FOR FUEL CELL, PRODUCTION METHOD THEREOF, FUEL CELL ELECTRODE CATALYST LAYER CONTAINING SAID CATALYST, FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY USING SAID CATALYST OR CATALYST LAYER, AND FUEL CELL
Provided is a catalyst for fuel cell which has a high catalytic activity and enables maintaining the high catalytic activity. Disclosed is an electrode catalyst for fuel cell comprising a catalyst carrier containing carbon as a main component and a catalytic metal supported on the catalyst carrier, wherein the catalyst has the R' (D'/G intensity ratio) of 0.6 or less, which is the ratio of D' band peak intensity (D' intensity) measured in the vicinity of 1620 cm -1 relative to G band peak intensity (G intensity) measured in the vicinity of 1580 cm -1 by Raman spectroscopy, and the volume ratio of a water vapor adsorption amount relative to a nitrogen adsorption amount at a relative pressure of 0.5 in adsorption isotherm is 0.15 or more and 0.30 or less.
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机译:提供一种具有高催化活性并且能够维持高催化活性的用于燃料电池的催化剂。公开了一种燃料电池用电极催化剂,其包含以碳为主要成分的催化剂载体和担载在该催化剂载体上的催化金属,其中,所述催化剂的R’(D’/ G强度比)为0.6以下。通过拉曼光谱在1620 cm -1附近测得的D'带峰强度(D'强度)与在1580 cm -1附近测得的G带峰强度(G强度)之比,以及吸附等温线中相对压力为0.5时相对于氮吸附量的水蒸气吸附量为0.15以上且0.30以下。
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