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
- Application Number:
- PPN: US 6-867123
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- 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 = {Tue Apr 21 00:00:00 EDT 1987},
month = {Tue Apr 21 00:00:00 EDT 1987}
}