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发明申请
US20090029219A1 CATALYST, PROCESS FOR PRODUCING THE CATALYST, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL 审中-公开
催化剂，催化剂生产工艺，膜电极组件和燃料电池

CATALYST, PROCESS FOR PRODUCING THE CATALYST, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL
摘要：
This invention provides a highly active and stable catalyst, which is suitable for use in fuel cells while suppressing the amount of expensive noble metals used, i.e., platinum (Pt) and ruthenium (Ru), and a process for producing the catalyst, and a membrane electrode assembly and fuel cell using the catalyst. The catalyst comprises: an electro conductive support; and catalyst particles supported on the electro conductive support and having a composition represented by formula (1) PtuRuxMgyTz   (1) wherein u is 30 to 60 atm %, x is 20 to 50 atm %, y is 0.5 to 20 atm %, and z is 0.5 to 40 atm %,element T being selected from the group consisting of silicon (Si), tungsten (W), molybdenum (Mo), vanadium (V), tantalum (Ta), chromium (Cr), titanium (Ti), hafnium (Hf), tin (Sn), zirconium (Zr), niobium (Nb), and combinations thereof, provided thatwhen element T is silicon, tungsten, molybdenum, vanadium, tantalum, or chromium, the content of element T having an oxygen bond is four times or less the content of element T having a metallic bond, and when element T is titanium, hafnium, tin, zirconium, or niobium, the content of element T having a metallic bond is twice or less the content of element T having an oxygen bond.
摘要（中）：

本发明提供一种高活性和稳定的催化剂，其适用于燃料电池，同时抑制所使用的昂贵贵金属的量，即铂（Pt）和钌（Ru），以及催化剂的制备方法和 膜电极组件和使用催化剂的燃料电池。 催化剂包括：导电载体; 和负载在导电载体上并具有由式（1）表示的组成的催化剂颗粒<？in-line-formula description =“In-line Formulas”end =“lead”？> PtuRuxMgyTz（1）<？ 式中，u为30〜60atm％，x为20〜50atm％，y为0.5〜20atm％，z为0.5〜40atm％ 元素T选自硅（Si），钨（W），钼（Mo），钒（V），钽（Ta），铬（Cr），钛（Ti），铪（Hf） 锡（Sn），锆（Zr），铌（Nb）及其组合，条件是当元素T为硅，钨，钼，钒，钽或铬时，具有氧键的元素T的含量为四倍 或更少具有金属键的元素T的含量，当元素T是钛，铪，锡，锆或铌时，具有金属键的元素T的含量是具有氧键的元素T的含量的两倍或更少 。

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