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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:
; ; ;
Issue Date:
OSTI Identifier:
6210780
Application Number:
ON: DE83013202
Assignee:
ERA-08-036254; EDB-83-111765
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 25 ENERGY STORAGE; CARBON STEELS; CORROSION; ELECTRIC BATTERIES; ELECTRODES; ELECTRIC-POWERED VEHICLES; ELECTROLYTES; IRON; IRON SULFIDES; SERVICE LIFE; ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; ELECTROCHEMICAL CELLS; ELEMENTS; IRON ALLOYS; IRON BASE ALLOYS; IRON COMPOUNDS; METALS; STEELS; SULFIDES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VEHICLES; 330300* - Advanced Propulsion Systems- Electric-Powered Systems; 250903 - Energy Storage- Batteries- Materials, Components, & Auxiliaries

Citation Formats

Otto, N.C., Warner, B.T., Smaga, J.A., and Battles, J.E. Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell. United States: N. p., 1982. Web.
Otto, N.C., Warner, B.T., Smaga, J.A., & Battles, J.E. Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell. United States.
Otto, N.C., Warner, B.T., Smaga, J.A., and Battles, J.E. Wed . "Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell". United States.
@article{osti_6210780,
title = {Corrosion resistant positive electrode for high-temperature, secondary electrochemical cell},
author = {Otto, N.C. and Warner, B.T. and Smaga, J.A. and Battles, J.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 = {1982},
month = {7}
}