Method of preparing an electrochemical cell in uncharged state

Details Method of preparing an electrochemical cell in uncharged state Method of preparing an electrochemical cell in uncharged state

1976-03-11

1977-02-01

Skapars, Anthony

Metal working

Method of mechanical manufacture

Electrical device making

296235, 429218, 429220, 429221, H01M 436

Patent

active

040060349

ABSTRACT:
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.

REFERENCES:
patent: 3881951 (1975-05-01), McCoy

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