Production process of electrode catalyst for fuel cell

Details Production process of electrode catalyst for fuel cell Production process of electrode catalyst for fuel cell

2011-03-22

2011-03-22

Hailey, Patricia L (Department: 1732)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Making catalytic electrode, process only

C502S182000, C502S185000, C502S326000, C502S334000, C502S339000, C420S435000, C420S417000, C420S422000, C420S424000, C420S428000, C420S434000, C420S441000, C420S469000, C420S513000, C420S420000, C420S421000, C420S436000, C420S439000, C420S440000, C420S442000, C420S444000, C420S451000, C420S452000, C420S456000, C420S457000, C420S458000, C420S459000, C420S466000, C420S477000, C420S481000, C420S482000, C420S483000, C420S485000, C420S487000, C420S492000, C420S493000, C420S494000, C420S496000, C420S497000, C420S

Reexamination Certificate

active

07910512

ABSTRACT:
To provide a production process of an electrode catalyst for fuel cell whose initial voltage is high and whose endurance characteristics, especially, whose voltage drop being caused by high-potential application is less.A production process according to the present invention of an electrode catalyst for fuel cell is characterized in that: it includes: a dispersing step of dispersing a conductive support in a solution; a loading step of dropping a platinum-salt solution, a base-metal-salt solution and an iridium-salt solution to the resulting dispersion liquid, thereby loading respective metallic salts on the conductive support as hydroxides under an alkaline condition; and an alloying step of heating the conductive support with metallic hydroxides loaded in a reducing atmosphere to reduce them, thereby alloying them.

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