Process for producing cupric sulfide electrodes

Details Process for producing cupric sulfide electrodes Process for producing cupric sulfide electrodes

H - Electricity

01

M

319/37, 319/80

H01M 4/58 (2006.01) C01G 3/12 (2006.01) H01M 4/08 (2006.01) H01M 6/16 (2006.01)

Patent

CA 1149867

ABSTRACT OF THE DISCLOSURE Disclosed in a wet process for producing a CuS cathode having a high capacity and reduced tendency to induce swelling when incorporated into a cell having a non-aqueous electrolyte and a lithium anode. Elemental copper and sulfur are dispersed in an aqueous HCl solution free of ionic contaminants. After reaction, the resulting cupric sulfide is washed with an aqueous solution of a mixture of, e.g., ammonium chloride and hyro- chloric acid, to remove cuprous ions. The product is then washed with water until the chloride ion content of the wash water is less than about 5 ppm. The washed solid product is then dried to subline residual NH4Cl, pressed to form a shape retaining cathode, subjected to a final heat treatment and incorporated into a cell or battery having a lithium metal anode and a non- aqueous electrolyte.

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