Bryan A Apodaca

US Patent:

20070298961, Dec 27, 2007

Filed:

Jun 22, 2006

Appl. No.:

11/425767

Inventors:

Gordon L. Rice - Albuquerque NM, US
Paolina Atanassova - Albuquerque NM, US
James H. Brewster - Rio Rancho NM, US
David Dericotte - Albuquerque NM, US
Bryan G. Apodaca - Albuquerque NM, US
Toivo T. Kodas - Albuquerque NM, US
Mark J. Hampden-Smith - Albuquerque NM, US

International Classification:

H01M 4/88

US Classification:

502101

Abstract:

In a method of producing an electrode comprising a layer of an electrocatalytic material on a substrate, at least one liquid medium containing a precursor to the electrocatalytic material is atomized to produce droplets containing the precursor and the droplets are entrained in a stream of carrier gas moving in a first direction. The droplets entrained in the carrier gas stream are then heated to remove the liquid medium and convert the precursor to particles of the electrocatalytic material. The electrocatalytic material particles entrained in said carrier gas stream are then brought into contact with the substrate, whereby the electrocatalytic particles are separated from the carrier gas and collected on the substrate. By imparting relative movement between the substrate and the carrier gas stream in a second direction substantially perpendicular to the first direction a continuous layer of the electrocatalytic material can be progressively deposited on the substrate.