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:
Jan. 31, 2006
Filed:
Oct. 17, 2002
Alan J. Cisar, Cypress, TX (US);
Oliver J. Murphy, Bryan, TX (US);
King-tsai Jeng, Fullerton, CA (US);
Carlos Salinas, Bryan, TX (US);
Stan Simpson, San Pedro, CA (US);
Dacong Weng, Rancho Palos Verdes, CA (US);
Homayoun Moaddel, Foothill Ranch, CA (US);
Alan J. Cisar, Cypress, TX (US);
Oliver J. Murphy, Bryan, TX (US);
King-Tsai Jeng, Fullerton, CA (US);
Carlos Salinas, Bryan, TX (US);
Stan Simpson, San Pedro, CA (US);
Dacong Weng, Rancho Palos Verdes, CA (US);
Homayoun Moaddel, Foothill Ranch, CA (US);
Lynntech Power Systems, Ltd., College Station, TX (US);
Abstract
A subassembly for a stack of electrochemical cells that includes a porous metal sheet having a first face and a second face with a hydrophobic, carbonaceous gas diffusion layer disposed within the pores along the first face of the porous metal sheet. The second face of the porous metal sheet defines a flow field while that portion of the porous metal sheet filled with the gas diffusion layer forms a current collector. The subassembly may further include a metal gas barrier metallurgically bonded to the second face of the porous metal sheet to act as a gas barrier between the porous metal sheet and a second porous metal sheet having a second gas diffusion layer disposed within the pores along a face of the second porous metal sheet. Preferably, the gas diffusion layers are applied as a paste to the porous metal sheet and then dried.