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Title: Electrochemical cell

An electrochemical cell having a bimodal positive electrode, a negative electrode of an alkali metal, and a compatible electrolyte including an alkali metal salt molten at the cell operating temperature. The positive electrode has an electrochemically active layer of at least one transition metal chloride at least partially present as a charging product, and additives of bromide and/or iodide and sulfur in the positive electrode or the electrolyte. Electrode volumetric capacity is in excess of 400 Ah/cm.sup.3 ; the cell can be 90% recharged in three hours and can operate at temperatures below C. There is also disclosed a method of reducing the operating temperature and improving the overall volumetric capacity of an electrochemical cell and for producing a positive electrode having a BET area greater than 6.times.10.sup.4 cm.sup.2 /g of Ni.
 [1];  [2];  [3]
  1. (6851 Carpenter St., Downers Grove, IL 60516)
  2. (611 Clover Ct., Naperville, IL 60540)
  3. (2205 Arbor Cir. 8, Downers Grove, IL 60515)
Issue Date:
OSTI Identifier:
Redey, Laszlo I. (6851 Carpenter St., Downers Grove, IL 60516);Vissers, Donald R. (611 Clover Ct., Naperville, IL 60540);Prakash, Jai (2205 Arbor Cir. 8, Downers Grove, IL 60515) ANL
Patent Number(s):
US 5536593
Application Number:
Contract Number:
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
electrochemical; cell; bimodal; positive; electrode; negative; alkali; metal; compatible; electrolyte; including; salt; molten; operating; temperature; electrochemically; active; layer; transition; chloride; partially; charging; product; additives; bromide; iodide; sulfur; volumetric; capacity; excess; 400; ah; cm; 90; recharged; hours; operate; temperatures; below; 160; degree; disclosed; method; reducing; improving; overall; producing; times; 10; temperatures below; metal chloride; positive electrode; negative electrode; alkali metal; electrochemical cell; transition metal; metal salt; operating temperature; active layer; electrolyte including; electrochemically active; cell operating; salt molten; chemically active; compatible electrolyte; bimodal positive; /429/