Cameron S Tanner
Plumbers in Springville, UT
License number
Utah 294271-5509
Issued Date
Jul 11, 1995
Expiration Date
Jul 31, 1998
Category
Plumber
Type
Apprentice Plumber
Address
Address
Springville, UT
Professional information
Electrode Design For Solid State Devices, Fuel Cells And Sensors
US Patent:
5543239, Aug 6, 1996
Filed:
Apr 19, 1995
Appl. No.:
8/424174
Inventors:
Anil V. Virkar - Salt Lake City UT
Cameron W. Tanner - Springville UT
Cameron W. Tanner - Springville UT
Assignee:
Electric Power Research Institute - Palo Alto CA
International Classification:
H01M 810
US Classification:
429 33
Abstract:
An improved electrode design for solid state devices, fuel cells, sensors and the like is made by incorporation of a porous layer of the electrolyte material over the dense electrolyte, and by the introduction of an electrocatalyst into the porous layer such that it is also continuous. The resulting electrode structure of dense electrolyte/porous electrolyte, continuous electrocatalyst and gas phase are present creating an enhanced three phase (TPB) length over that of conventional designs. The design allows for improved performance at lower temperatures which means a lower cost of materials, fewer problems from oxidation and corrosion, and improved durability. In a preferred embodiment, the dense electrolyte and porous electrolyte is yttria-stabilized zirconia (YSZ), and the electrocatalyst is selected from silver; platinum; rhodium; palladium; iridium; ruthenium;
(La. sub. 1-x Sr. sub. x) MnO. sub. 3, wherein x is 0 to 0. 5;
(La. sub. 1-x Sr. sub. x) CoO. sub.