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Title: Dry compliant seal for phosphoric acid fuel cell

Abstract

A dry compliant overlapping seal for a phosphoric acid fuel cell preformed f non-compliant Teflon to make an anode seal frame that encircles an anode assembly, a cathode seal frame that encircles a cathode assembly and a compliant seal frame made of expanded Teflon, generally encircling a matrix assembly. Each frame has a thickness selected to accommodate various tolerances of the fuel cell elements and are either bonded to one of the other frames or to a bipolar or end plate. One of the non-compliant frames is wider than the other frames forming an overlap of the matrix over the wider seal frame, which cooperates with electrolyte permeating the matrix to form a wet seal within the fuel cell that prevents process gases from intermixing at the periphery of the fuel cell and a dry seal surrounding the cell to keep electrolyte from the periphery thereof. The frames may be made in one piece, in L-shaped portions or in strips and have an outer perimeter which registers with the outer perimeter of bipolar or end plates to form surfaces upon which flanges of pan shaped, gas manifolds can be sealed.

Inventors:
 [1];  [2]
  1. (South Greensburg, PA)
  2. (N. Huntingdon Township, Westmoreland County, PA)
Issue Date:
Research Org.:
Westinghouse Electric Corporation
OSTI Identifier:
867650
Patent Number(s):
4978590
Assignee:
United States of America as represented by Department of Energy (Washington, DC) OSTI
DOE Contract Number:  
NASA-DEN3-290
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
dry; compliant; seal; phosphoric; acid; fuel; cell; overlapping; preformed; non-compliant; teflon; anode; frame; encircles; assembly; cathode; expanded; encircling; matrix; thickness; selected; accommodate; various; tolerances; elements; bonded; frames; bipolar; plate; wider; forming; overlap; cooperates; electrolyte; permeating; form; wet; prevents; process; gases; intermixing; periphery; surrounding; piece; l-shaped; portions; strips; outer; perimeter; registers; plates; surfaces; flanges; pan; shaped; gas; manifolds; sealed; gas manifolds; matrix assembly; fuel cell; anode assembly; seal frame; process gas; phosphoric acid; outer perimeter; acid fuel; wet seal; cathode assembly; compliant seal; gas manifold; shaped portion; dry compliant; /429/

Citation Formats

Granata, Jr., Samuel J., and Woodle, Boyd M. Dry compliant seal for phosphoric acid fuel cell. United States: N. p., 1990. Web.
Granata, Jr., Samuel J., & Woodle, Boyd M. Dry compliant seal for phosphoric acid fuel cell. United States.
Granata, Jr., Samuel J., and Woodle, Boyd M. Mon . "Dry compliant seal for phosphoric acid fuel cell". United States. https://www.osti.gov/servlets/purl/867650.
@article{osti_867650,
title = {Dry compliant seal for phosphoric acid fuel cell},
author = {Granata, Jr., Samuel J. and Woodle, Boyd M.},
abstractNote = {A dry compliant overlapping seal for a phosphoric acid fuel cell preformed f non-compliant Teflon to make an anode seal frame that encircles an anode assembly, a cathode seal frame that encircles a cathode assembly and a compliant seal frame made of expanded Teflon, generally encircling a matrix assembly. Each frame has a thickness selected to accommodate various tolerances of the fuel cell elements and are either bonded to one of the other frames or to a bipolar or end plate. One of the non-compliant frames is wider than the other frames forming an overlap of the matrix over the wider seal frame, which cooperates with electrolyte permeating the matrix to form a wet seal within the fuel cell that prevents process gases from intermixing at the periphery of the fuel cell and a dry seal surrounding the cell to keep electrolyte from the periphery thereof. The frames may be made in one piece, in L-shaped portions or in strips and have an outer perimeter which registers with the outer perimeter of bipolar or end plates to form surfaces upon which flanges of pan shaped, gas manifolds can be sealed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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