Short protection device for stack of electrolytic cells
Abstract
Electrical short protection is provided in an electrolytic cell stack by the combination of a thin, nonporous ceramic shield and a noble metal foil disposed on opposite sides of the sealing medium in a gas manifold gasket. The thin ceramic shield, such as alumina, is placed between the porous gasket and the cell stack face at the margins of the negative end plate to the most negative cells to impede ion current flow. The noble metal foil, for instance gold, is electrically coupled to the negative potential of the stack to collect positive ions at a harmless location away from the stack face. Consequently, corrosion products from the stack structure deposit on the foil rather than on the stack face to eliminate electrical shorting of cells at the negative end of the stack.
- Inventors:
- Issue Date:
- Research Org.:
- International Fuel Cells Corp., South Windsor, CT (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 865647
- Patent Number(s):
- 4548874
- Application Number:
- 06/676,340
- Assignee:
- The United States of America as represented by the United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- DOE Contract Number:
- AC01-79ET15440
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1984 Nov 29
- Country of Publication:
- United States
- Language:
- English
- Subject:
- protection; device; stack; electrolytic; cells; electrical; provided; cell; combination; nonporous; ceramic; shield; noble; metal; foil; disposed; opposite; sealing; medium; gas; manifold; gasket; alumina; placed; porous; margins; negative; plate; impede; current; flow; instance; gold; electrically; coupled; potential; collect; positive; harmless; location; consequently; corrosion; products; structure; deposit; eliminate; shorting; electrolytic cells; electrolytic cell; cell stack; noble metal; current flow; metal foil; porous ceramic; electrically coupled; protection device; negative potential; corrosion products; porous gas; sealing medium; gas manifold; electrical shorting; manifold gas; /429/
Citation Formats
Katz, Murray, and Schroll, Craig R. Short protection device for stack of electrolytic cells. United States: N. p., 1985.
Web.
Katz, Murray, & Schroll, Craig R. Short protection device for stack of electrolytic cells. United States.
Katz, Murray, and Schroll, Craig R. Tue .
"Short protection device for stack of electrolytic cells". United States. https://www.osti.gov/servlets/purl/865647.
@article{osti_865647,
title = {Short protection device for stack of electrolytic cells},
author = {Katz, Murray and Schroll, Craig R.},
abstractNote = {Electrical short protection is provided in an electrolytic cell stack by the combination of a thin, nonporous ceramic shield and a noble metal foil disposed on opposite sides of the sealing medium in a gas manifold gasket. The thin ceramic shield, such as alumina, is placed between the porous gasket and the cell stack face at the margins of the negative end plate to the most negative cells to impede ion current flow. The noble metal foil, for instance gold, is electrically coupled to the negative potential of the stack to collect positive ions at a harmless location away from the stack face. Consequently, corrosion products from the stack structure deposit on the foil rather than on the stack face to eliminate electrical shorting of cells at the negative end of the stack.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {10}
}