Electrochemical cell

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870511

Redey, Laszlo I ^[1]; Vissers, Donald R ^[2]; Prakash, Jai ^[3]

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1. 6851 Carpenter St., Downers Grove, IL 60516
2. 611 Clover Ct., Naperville, IL 60540
3. 2205 Arbor Cir. 8, Downers Grove, IL 60515

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 160.degree. 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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: 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)
• Patent Number(s): US 5536593
• Application Number: 08/211554
• OSTI ID: 870511
• Country of Publication: United States
• Language: English

Related Subjects

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/