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Title: Fully internal manifolded fuel cell stack

Abstract

A fuel cell stack is described comprising a plurality of fuel cell units, each unit comprising an anode and a cathode, an electrolyte, and a separator plate separating said cell units between an anode and cathode forming an anode chamber and forming a cathode chamber, said anode chamber in gas communication with fuel gas supply and outlet and said cathode chamber in gas communication with oxidant gas supply and outlet the improvement comprising; said electrolytes and said separator plates extending to the peripheral edge of said fuel cell stack, said separator plates having a flattened peripheral wet seal structure extending to contact less than about 1 inch width of said electrolytes on each face of said separator plates completely around their periphery forming a peripheral wet seal less than about 1 inch width under cell operating conditions, said electrolytes and said separator plates each having a plurality of aligned perforations said perforations in said separator plates being surrounded by a flattened manifold wet seal structure extending to contact less than about 1 inch width of said electrolyte on each face of said separator plate forming a manifold wet seal less thin about 1 inch width under cell operating conditions tomore » form a plurality of gas manifolds extending through said cell stack, conduits through said extended manifold wet seal structure providing fuel gas communication between one set of said manifolds and said anode chambers on one face of said separator plates and conduits through said extended manifold wet seal structure providing oxidant gas communication between a second set of said manifolds and said cathode chambers on the other face of said separator plates, thereby providing fully internal manifolding of fuel and oxidant gases to and from each said unit fuel cell in said fuel cell stack.« less

Inventors:
; ; ;
Publication Date:
OSTI Identifier:
6274899
Patent Number(s):
US 5227256; A
Application Number:
PPN: US 7-724422
Assignee:
Institute of Gas Technology, Chicago, IL (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 2 Jul 1991
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; FUEL CELLS; DESIGN; SEALS; ANODES; CATHODES; ELECTROLYTES; FUEL GAS; OPERATION; OXIDIZERS; SEPARATION EQUIPMENT; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELECTRODES; FLUIDS; FUELS; GAS FUELS; GASES; 300501* - Fuel Cells- Design & Development; 300503 - Fuel Cells- Materials, Components, & Auxiliaries

Citation Formats

Marianowski, L G, Schora, F C, Petri, R J, and Lawson, M G. Fully internal manifolded fuel cell stack. United States: N. p., 1993. Web.
Marianowski, L G, Schora, F C, Petri, R J, & Lawson, M G. Fully internal manifolded fuel cell stack. United States.
Marianowski, L G, Schora, F C, Petri, R J, and Lawson, M G. Tue . "Fully internal manifolded fuel cell stack". United States.
@article{osti_6274899,
title = {Fully internal manifolded fuel cell stack},
author = {Marianowski, L G and Schora, F C and Petri, R J and Lawson, M G},
abstractNote = {A fuel cell stack is described comprising a plurality of fuel cell units, each unit comprising an anode and a cathode, an electrolyte, and a separator plate separating said cell units between an anode and cathode forming an anode chamber and forming a cathode chamber, said anode chamber in gas communication with fuel gas supply and outlet and said cathode chamber in gas communication with oxidant gas supply and outlet the improvement comprising; said electrolytes and said separator plates extending to the peripheral edge of said fuel cell stack, said separator plates having a flattened peripheral wet seal structure extending to contact less than about 1 inch width of said electrolytes on each face of said separator plates completely around their periphery forming a peripheral wet seal less than about 1 inch width under cell operating conditions, said electrolytes and said separator plates each having a plurality of aligned perforations said perforations in said separator plates being surrounded by a flattened manifold wet seal structure extending to contact less than about 1 inch width of said electrolyte on each face of said separator plate forming a manifold wet seal less thin about 1 inch width under cell operating conditions to form a plurality of gas manifolds extending through said cell stack, conduits through said extended manifold wet seal structure providing fuel gas communication between one set of said manifolds and said anode chambers on one face of said separator plates and conduits through said extended manifold wet seal structure providing oxidant gas communication between a second set of said manifolds and said cathode chambers on the other face of said separator plates, thereby providing fully internal manifolding of fuel and oxidant gases to and from each said unit fuel cell in said fuel cell stack.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {7}
}