蒸着触媒および燃料電池におけるその使用

Title:

蒸着触媒および燃料電池におけるその使用

Document Type and Number:

Japanese Patent JP2005532670

Kind Code:

A

Abstract:

The invention provides a catalyst useful in a proton exchange membrane containing fuel cell for the electrooxidation of fuels prepared by the chemical activation of vapor deposited substantially semicrystalline PtXaAlb onto a substrate, wherein X is selected from the group consisting of Ru, Rh, Mo, W, V, Hf, Zr, Nb and Co, and a is at least 0.001, and b is at least 0.85.(1+a), with the proviso that when a=1 and b=8, X is only selected from the group consisting of W, V, Hf, Zr, Nb, and Co. These catalysts have an onset voltage for the electrooxidation of methanol of less than about 240 mV versus a saturated calomel electrode (SCE). They are useful in making diffusion backing electrodes and catalyst coated membranes for use in fuel cells.

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Inventors:

Huigeroa, The Yuan Sea
Land Glenn, Cynthia A

Application Number:

JP2004534236A

Publication Date:

October 27, 2005

Filing Date:

June 30, 2003

Export Citation:

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Assignee:

E.I.DU PONT DE NEMOURS AND COMPANY

International Classes:

H01M4/90; B01J21/18; B01J25/00; B01J31/00; B01J35/06; B01J37/02; B01J37/34; C23C14/18; H01M4/86; H01M4/88; H01M4/92; H01M4/94; H01M4/96; H01M8/02; H01M8/10; (IPC1-7): H01M4/90; H01M8/02; H01M8/10

Attorney, Agent or Firm:

Heikichi Odashima

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