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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 to 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.

Inventors:
;
Publication Date:
Research Org.:
United Technologies Research Center, East Hartford, CT (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
6655578
Patent Number(s):
4,659,632
Application Number:
06/867,123
Assignee:
Dept. of Energy
DOE Contract Number:  
AC21-79ET15440
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; MOLTEN CARBONATE FUEL CELLS; ELECTROLYTES; CONTROL; MASS TRANSFER; MATRIX MATERIALS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; MATERIALS; 300503* - Fuel Cells- Materials, Components, & Auxiliaries

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. https://www.osti.gov/servlets/purl/6655578.
@article{osti_6655578,
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 to 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.},
doi = {},
url = {https://www.osti.gov/biblio/6655578}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {4}
}

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