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    • 6. 发明申请
    • Method of preparing metal catalyst and electrode including the same
    • 制备金属催化剂和包括其的电极的方法
    • US20070184335A1
    • 2007-08-09
    • US11703131
    • 2007-02-07
    • Suk-gi HongDuck-young YooJung-ock ParkWoo-sung Jeon
    • Suk-gi HongDuck-young YooJung-ock ParkWoo-sung Jeon
    • H01M4/86B05D5/12B01J23/00H01M4/88H01M4/00
    • H01M4/90H01M4/8657H01M4/8663H01M4/8857H01M4/8882H01M4/926H01M2008/1095
    • A method of preparing a metal catalyst including a conductive catalyst material and a coating layer formed of a water repellent material on the surface of the conductive catalyst material includes: obtaining a water repellent material solution by mixing a water repellent material and a first solvent; obtaining a conductive catalyst solution by mixing a conductive catalyst material and a first solvent; mixing the water repellent material solution and the conductive catalyst solution; casting the result onto a supporter, drying the cast result and then separating a metal catalyst in a solid state from the supporter; and pulverizing and sieving the product. Also provided are a metal catalyst prepared using the method, an electrode including the metal catalyst, a method of preparing the electrode, and a fuel cell employing the electrode. A metal catalyst including a coating layer formed of a water repellent material on the surface of a conductive catalyst particle can be obtained by using the method of preparing a metal catalyst. Such a metal catalyst does not sink into a liquid electrolyte since hydrophobicity is efficiently distributed around the conductive catalyst particle. Also, the distribution and movement of the liquid electrolyte, such as phosphoric acid, around the metal catalyst can be controlled. A fuel cell employing the metal catalyst has excellent efficiency and overall performance.
    • 在导电性催化剂材料的表面上制备包括导电催化剂材料和由防水材料形成的涂层的金属催化剂的方法包括:通过混合防水材料和第一溶剂获得防水材料溶液; 通过混合导电催化剂材料和第一溶剂获得导电催化剂溶液; 混合防水材料溶液和导电催化剂溶液; 将结果浇注到支持体上,干燥铸造结果,然后将固体状态的金属催化剂与载体分离; 并对产品进行粉碎和筛分。 还提供了使用该方法制备的金属催化剂,包括金属催化剂的电极,制备电极的方法和使用该电极的燃料电池。 通过使用金属催化剂的制备方法,可以得到在导电性催化剂粒子的表面上由斥水材料形成的涂层的金属催化剂。 这种金属催化剂不会沉入液体电解质中,因为疏水性有效地分布在导电催化剂颗粒周围。 此外,可以控制金属催化剂周围的液体电解质如磷酸的分布和移动。 使用金属催化剂的燃料电池具有优异的效率和整体性能。