About 16 results
https://drivepatents.com/patents/1077759 · 18 May 2005
An ion-exchange membrane may be continuously coated by depositing a catalyst composition on a release surface, drying the catalyst at an elevated temperature and then transferring the dried catalyst layer onto an ion-exchange membrane by applying pressure ...
https://drivepatents.com/patents/1077758 · 18 May 2005
A method for coating an ion-exchange membrane with a catalyst layer by first heating a surface of the membrane to thereby soften the surface, followed by deposition of a catalyst composition and compaction into the ion-exchange membrane to produce a cataly...
https://drivepatents.com/patents/1078262 · 27 Apr 2005
Contamination of the ion-exchange membrane in an electrochemical fuel cell can significantly reduce the lifetime. One source of contamination is from sealant materials, particularly if the sealant is silicone and impregnated into the peripheral region of t...
https://drivepatents.com/patents/1081393 · 22 Dec 2004
A membrane electrode assembly may be made using a one-sided catalyst coated membrane (CCM) wherein only one catalyst layer, either the anode or the cathode, is coated directly on the ion-exchange membrane. The other catalyst layer is coated on a gas diffus...
https://drivepatents.com/patents/1091102 · 17 Dec 2003
An improved membrane electrode assembly ("MEA") for an electrochemical fuel cell comprises coextensive ion exchange membrane and electrode layers and a rigid fluid impermeable integral seal comprising a sealant material impregnated into the porous electrod...
https://drivepatents.com/patents/1091461 · 3 Dec 2003
A belt feed apparatus (10) receives and feeds a continuous web of expanded graphite (2). The apparatus comprises a first pair of endless belts (14,14') for receiving the web of expanded graphite (2) therebetween, a drive motor operably connected to the fir...
https://drivepatents.com/patents/1091717 · 26 Nov 2003
A method and apparatus are provided for distributing water produced by the electrochemical reaction to an ion-exchange membrane in an electrochemical fuel cell. The method comprises periodically reversing the flow direction of an oxidant stream through a f...
https://drivepatents.com/patents/1093576 · 3 Sep 2003
A receptacle having an end cap, a pliable sidewall, and a fastener, for receiving and retaining a fuel cell stack in its stacked configuration during fabrication of a multi-stack fuel cell assembly, is shown and described. Methods of fabricating the assemb...
https://drivepatents.com/patents/1095762 · 28 May 2003
A fuel cell resistance test system includes a contact head having a plurality of spaced electrical contacts for contacting multiple ones of the fuel cells composing the stack. In one embodiment, a plurality of selectively actuable switches produce a short ...
https://drivepatents.com/patents/1099382 · 2 Jan 2003
Apparatus, systems, and methods for bonding one element (210) of an electrochemical cell or cell stack to another (211) wherein a sealing grove (218) with a complex cross-sectional shape receives and retains a bead (214) of adhesive prior to being assemble...