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Title: Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell

Abstract

The corrosion rate of low carbon steel within a positive electrode of a high-temperature, secondary electrochemical cell that includes FeS as active material is substantially reduced by incorporating therein finely divided iron powder in stoichiometric excess to the amount required to form FeS in the fully charged electrode. The cell typically includes an alkali metal or alkaline earth metal as negative electrode active material and a molten metal halide salt as electrolyte. The excess iron permits use of inexpensive carbon steel alloys that are substantially free of the costly corrosion resistant elements chromium, nickel and molybdenum while avoiding shorten cell life resulting from high corrosion rates.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Chicago, IL)
  2. (South Holland, IL)
  3. (Lemont, IL)
  4. (Oak Forest, IL)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
864687
Patent Number(s):
4401714
Assignee:
United States of America as represented by United States (Washington, DC) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
corrosion; resistant; positive; electrode; high-temperature; secondary; electrochemical; cell; rate; carbon; steel; fes; active; material; substantially; reduced; incorporating; therein; finely; divided; iron; powder; stoichiometric; excess; amount; required; form; charged; typically; alkali; metal; alkaline; earth; negative; molten; halide; salt; electrolyte; permits; inexpensive; alloys; free; costly; elements; chromium; nickel; molybdenum; avoiding; shorten; life; resulting; rates; steel alloy; iron powder; corrosion rate; substantially reduced; secondary electrochemical; corrosion resistant; substantially free; positive electrode; negative electrode; active material; molten metal; alkali metal; electrochemical cell; alkaline earth; metal halide; earth metal; finely divided; substantially reduce; carbon steel; steel alloys; halide salt; amount required; stoichiometric excess; electrode active; charged electrode; /429/29/

Citation Formats

Otto, Neil C., Warner, Barry T., Smaga, John A., and Battles, James E. Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell. United States: N. p., 1983. Web.
Otto, Neil C., Warner, Barry T., Smaga, John A., & Battles, James E. Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell. United States.
Otto, Neil C., Warner, Barry T., Smaga, John A., and Battles, James E. Sat . "Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell". United States. https://www.osti.gov/servlets/purl/864687.
@article{osti_864687,
title = {Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell},
author = {Otto, Neil C. and Warner, Barry T. and Smaga, John A. and Battles, James E.},
abstractNote = {The corrosion rate of low carbon steel within a positive electrode of a high-temperature, secondary electrochemical cell that includes FeS as active material is substantially reduced by incorporating therein finely divided iron powder in stoichiometric excess to the amount required to form FeS in the fully charged electrode. The cell typically includes an alkali metal or alkaline earth metal as negative electrode active material and a molten metal halide salt as electrolyte. The excess iron permits use of inexpensive carbon steel alloys that are substantially free of the costly corrosion resistant elements chromium, nickel and molybdenum while avoiding shorten cell life resulting from high corrosion rates.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

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