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Title: Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fuel cell

Abstract

A process is described for the preparation of a bipolar gas reactant distribution assembly having solid, gas impervious edge seals to prevent leakage of gaseous reactants, which comprises providing a pair of porous plate members provided with peripheral slits, the slits being generally parallel to, and spaced from each of two edges of the plate, filling the slits with a non-porous, fusible gas impervious edge sealing compound, assembling the plate members with the slits therein approximately perpendicular to one another and a layer of fusible sealing material interposed therebetween, hot pressing the assembly at a temperature sufficient to cause a redistribution of the sealant layer into the pores of the adjacent plate surfaces and the edge sealing compound to flow and impregnate the region of the plates adjacent the slits and comingle with the redistributed sealant material to form a continuous layer of sealant along the edges of the assembly.

Inventors:
;
Publication Date:
OSTI Identifier:
5704813
Patent Number(s):
US 4588661
Assignee:
Engelhard Corp., Menlo Park, NJ
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 27 Aug 1984
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; FUEL CELLS; SEALS; HOT PRESSING; IMPREGNATION; LAYERS; POROUS MATERIALS; SEALING MATERIALS; TEMPERATURE DEPENDENCE; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FABRICATION; MATERIALS; MATERIALS WORKING; PRESSING; 300503* - Fuel Cells- Materials, Components, & Auxiliaries

Citation Formats

Kaufman, A, and Werth, J. Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fuel cell. United States: N. p., 1986. Web.
Kaufman, A, & Werth, J. Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fuel cell. United States.
Kaufman, A, and Werth, J. Tue . "Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fuel cell". United States.
@article{osti_5704813,
title = {Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fuel cell},
author = {Kaufman, A and Werth, J},
abstractNote = {A process is described for the preparation of a bipolar gas reactant distribution assembly having solid, gas impervious edge seals to prevent leakage of gaseous reactants, which comprises providing a pair of porous plate members provided with peripheral slits, the slits being generally parallel to, and spaced from each of two edges of the plate, filling the slits with a non-porous, fusible gas impervious edge sealing compound, assembling the plate members with the slits therein approximately perpendicular to one another and a layer of fusible sealing material interposed therebetween, hot pressing the assembly at a temperature sufficient to cause a redistribution of the sealant layer into the pores of the adjacent plate surfaces and the edge sealing compound to flow and impregnate the region of the plates adjacent the slits and comingle with the redistributed sealant material to form a continuous layer of sealant along the edges of the assembly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {5}
}