The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2005
Filed:
Nov. 21, 2002
Philip Cox, San Jose, CA (US);
Suk-yal Cha, Santa Clara, CA (US);
Gouyan Hou, Menlo Park, CA (US);
Ngan Tran, San Jose, CA (US);
Anh Duong, San Francisco, CA (US);
Philip Cox, San Jose, CA (US);
Suk-Yal Cha, Santa Clara, CA (US);
Gouyan Hou, Menlo Park, CA (US);
Ngan Tran, San Jose, CA (US);
Anh Duong, San Francisco, CA (US);
Polyfuel, Inc., Mountain View, CA (US);
Abstract
A method of preparing catalyst agglomerates for electrochemical devices is provided. The method comprises dispersing particles of a catalyst in a non-aqueous solvent to form a dispersion of the catalyst, adding an ion conducting polymer in a dilute solution to the dispersion of the catalyst under agitation to form catalyst agglomerates, and stirring the dispersion of the catalyst and the catalyst agglomerates to control the growth of the agglomerates. A directly applicable catalyst composition is also provided. The catalyst composition comprises the catalyst agglomerates prepared according to the present invention, a solvent to plasticize surfaces of the catalyst agglomerates and the membrane, and a non-aqueous carrier solvent.