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Title: 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:
 [1];  [2]
  1. Newington, CT
  2. West Hartford, CT
Issue Date:
Research Org.:
INTERNATIONAL FUEL CELLS CORP
OSTI Identifier:
865647
Patent Number(s):
4548874
Application Number:
06/676,340
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC01-79ET15440
Resource Type:
Patent
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}
}

Patent:

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