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NANOFIBER ELECTRODE AND METHOD OF FORMING SAME

United States Patent Application

*** PATENT GRANTED ***
20130209913
9,905,870
A1
View the Complete Application at the US Patent & Trademark Office
In one aspect, a method of forming an electrode for an electrochemical device is disclosed. In one embodiment, the method includes the steps of mixing at least a first amount of a catalyst and a second amount of an ionomer or uncharged polymer to form a solution and delivering the solution into a metallic needle having a needle tip. The method further includes the steps of applying a voltage between the needle tip and a collector substrate positioned at a distance from the needle tip, and extruding the solution from the needle tip at a flow rate such as to generate electrospun fibers and deposit the generated fibers on the collector substrate to form a mat with a porous network of fibers. Each fiber in the porous network of the mat has distributed particles of the catalyst. The method also includes the step of pressing the mat onto a membrane.
Pintauro, Peter N. (Brentwood, TN), Zhang, Wenjing (Copenhagen, DK)
VANDERBILT UNIVERSITY (Nashville TN)
13/ 823,968
October 27, 2011
STATEMENT OF FEDERALLY-SPONSORED RESEARCH [0003] The invention was made with government support under Grant No. DE-FG36-06GO16030 awarded by U.S. Department of Energy (DOE). The government has certain rights in the invention.