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:
Nov. 21, 2006
Filed:
May. 29, 2003
Emad Batawi, Winterthur, CH;
Cyril Voisard, Fontenais, CH;
Emad Batawi, Winterthur, CH;
Cyril Voisard, Fontenais, CH;
Sulzer Hexis AG, Winterthur, CH;
Abstract
The disclosure concerns a method of preparing an ink (P) which can be used for the manufacture of a functional layer (), in particular for the manufacture of an electrode for fuel cells, which ink contains dispersely distributed particles () forming two solid phases, with catalytic reactions being able to be activated in the manufactured functional layer on a gas/solid interface by a combined action of the two solid phases and with gaseous reactants. In a first step (), the solid phases are formed as fine-grain particles (P, P) and the particles of both solid phases are dispersed in a first liquid (L) in a mixed and homogeneously distributed manner (). Heterogeneous conglomerates (P) of the fine-grain particles are formed from the thereby created dispersion (D); these conglomerates are mixed to form a homogeneous ink (P), after sintering (), by addition of a second liquid (L) and by comminution (), with particles formed in the first step having such a fine grain that the heterogeneous conglomerates and their fractions each contain a plurality of particles of both solid phases after comminution.