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Title: Electrolyte matrix in a molten carbonate fuel cell stack

Abstract

A fuel cell stack is disclosed with modified electrolyte matrices for limiting the electrolytic pumping and electrolyte migration along the stack external surfaces. Each of the matrices includes marginal portions at the stack face of substantially greater pore size than that of the central body of the matrix. Consequently, these marginal portions have insufficient electrolyte fill to support pumping or wicking of electrolyte from the center of the stack of the face surfaces in contact with the vertical seals. Various configurations of the marginal portions include a complete perimeter, opposite edge portions corresponding to the air plenums and tab size portions corresponding to the manifold seal locations. These margins will substantially limit the migration of electrolyte to and along the porous manifold seals during operation of the electrochemical cell stack. 6 figs.

Inventors:
;
Issue Date:
Research Org.:
International Fuel Cells Corp
OSTI Identifier:
7152848
Patent Number(s):
4659635 A
Application Number:
PPN: US 6-867123
Assignee:
Dept. of Energy, Washington, DC (United States) NETL; EDB-94-123498
DOE Contract Number:  
AC01-79ET15440
Resource Type:
Patent
Resource Relation:
Patent File Date: 27 May 1986
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; ELECTROLYTES; MASS TRANSFER; MOLTEN CARBONATE FUEL CELLS; BATTERY SEPARATORS; MATRIX MATERIALS; MITIGATION; SEALS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; MATERIALS; 300505* - Fuel Cells- Electrochemistry, Mass Transfer & Thermodynamics

Citation Formats

Reiser, C.A., and Maricle, D.L. Electrolyte matrix in a molten carbonate fuel cell stack. United States: N. p., 1987. Web.
Reiser, C.A., & Maricle, D.L. Electrolyte matrix in a molten carbonate fuel cell stack. United States.
Reiser, C.A., and Maricle, D.L. Tue . "Electrolyte matrix in a molten carbonate fuel cell stack". United States.
@article{osti_7152848,
title = {Electrolyte matrix in a molten carbonate fuel cell stack},
author = {Reiser, C.A. and Maricle, D.L.},
abstractNote = {A fuel cell stack is disclosed with modified electrolyte matrices for limiting the electrolytic pumping and electrolyte migration along the stack external surfaces. Each of the matrices includes marginal portions at the stack face of substantially greater pore size than that of the central body of the matrix. Consequently, these marginal portions have insufficient electrolyte fill to support pumping or wicking of electrolyte from the center of the stack of the face surfaces in contact with the vertical seals. Various configurations of the marginal portions include a complete perimeter, opposite edge portions corresponding to the air plenums and tab size portions corresponding to the manifold seal locations. These margins will substantially limit the migration of electrolyte to and along the porous manifold seals during operation of the electrochemical cell stack. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {4}
}