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

Patent · Wed Jul 07 00:00:00 EDT 1982

OSTI ID:6210780

Otto, N C; Warner, B T; Smaga, J A; Battles, J E

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.

• DOE Contract Number: W-31-109-ENG-38
• Assignee: ERA-08-036254; EDB-83-111765
• Application Number: ON: DE83013202
• OSTI ID: 6210780
• Country of Publication: United States
• Language: English

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