Method of preparing an electrochemical cell in uncharged state

Patent · Tue Feb 01 00:00:00 EST 1977

OSTI ID:862758

Shimotake, Hiroshi ^[1]; Bartholme, Louis G ^[2]; Arntzen, John D ^[3]

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1. Hinsdale, IL
2. Joliet, IL
3. Naperville, IL

A secondary electrochemical cell is assembled in an uncharged state for the preparation of a lithium alloy-transition metal sulfide cell. The negative electrode includes a material such as aluminum or silicon for alloying with lithium as the cell is charged. The positive electrode is prepared by blending particulate lithium sulfide, transition metal powder and electrolytic salt in solid phase. The mixture is simultaneously heated to a temperature in excess of the melting point of the electrolyte and pressed onto an electrically conductive substrate to form a plaque. The plaque is assembled as a positive electrode within the cell. During the first charge cycle lithium alloy is formed within the negative electrode and transition metal sulfide such as iron sulfide is produced within the positive electrode.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 4006034
• OSTI ID: 862758
• Country of Publication: United States
• Language: English

Related Subjects

method
preparing
electrochemical
cell
uncharged
secondary
assembled
preparation
lithium
alloy-transition
metal
sulfide
negative
electrode
material
aluminum
silicon
alloying
charged
positive
prepared
blending
particulate
transition
powder
electrolytic
salt
solid
phase
mixture
simultaneously
heated
temperature
excess
melting
electrolyte
pressed
electrically
conductive
substrate
form
plaque
charge
cycle
alloy
formed
iron
produced
electrolytic salt
iron sulfide
conductive substrate
metal sulfide
secondary electrochemical
positive electrode
negative electrode
electrochemical cell
electrically conductive
transition metal
lithium alloy
solid phase
metal powder
lithium sulfide
charge cycle
sulfide cell
particulate lithium
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