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Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation of fuel cell electrodes and the like employing the same

  • US 4,044,193 A
  • Filed: 12/20/1974
  • Issued: 08/23/1977
  • Est. Priority Date: 06/16/1971
  • Status: Expired
First Claim
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1. In a fuel cell and the like, a catalytic electrode comprising an electrically conductive high surface area substrate on which has been deposited platinum particles of the order of substantially 15 to 25 Angstroms in particle size and in which said particles are formed from one of an oxidative decomposition of a platinum complex comprising an oxidizable ligand, and hydrolysis of a non-complex platinum salt solution.

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