Basic fuel cell element limiting methanol crossing through...

Details Basic fuel cell element limiting methanol crossing through... Basic fuel cell element limiting methanol crossing through...

2007-01-30

2007-01-30

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S010000, C429S006000, C429S047000

Reexamination Certificate

active

10481490

ABSTRACT:
The PEM (Proton Exchange Membrane) type basic fuel cell element has a high efficient when only the protons migrate towards the cathode, excluding any other species that could react with the cathode. It is composed mainly of a silicon substrate (25) crossed by pipes (26), terminating on the bottom of a dish. The cathode (20) is deposited on the bottom of this dish, covered by a first layer of electrolyte (23). An internal part (32) of the anode is embedded between two layers (23) of electrolyte, while an external part (31) is placed on the upper part of it. The internal part (32) is preferably a grid or a foam such that fuel migrating towards the cathode can be consumed and protons can pass through.

REFERENCES:
patent: 2003/0228508 (2003-12-01), Champion et al.
patent: 198 03 132 (1999-04-01), None
patent: 19803132 (1999-04-01), None
patent: 198 59 765 (2000-06-01), None
patent: 19859765 (2000-06-01), None
patent: WO 99/39398 (1999-08-01), None
patent: WO 99/40237 (1999-08-01), None
patent: WO9940237 (1999-08-01), None
patent: WO 01/37357 (2001-05-01), None
patent: WO0137357 (2001-05-01), None
Copy of French Search Report corresponding to French application FR 0205062.
Copy of English translations for DE 198 01332, DE 198 59765, WO 99 40237, WO 01 37357.

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