Whittaker Technical Products, Inc.

Lithium Energy Associates, Inc.

Frederick W Dampier

Richard M Mank

A rechargeable cell with an alkali or alkaline earth metal electrode with a coulombic capacity about the same as a metal halide electrode such as CuCl , CuBr , and the like, or a metal oxide positive electrode such as LiCoO , MnO and the like or a carbonaceous positive electrode and a sulfur dioxide electrolyte solvent containing a salt that produces a halogen and/or a Lewis acid on overcharge is disclosed. On most discharges, the active metal of the negative electrode is anodically dissolved and any dendrites are anodically dissolved or electrically isolated and scavenged. About every 4 to 50 cycles, the cell is overdischarged in reversal to reduce the state of charge of the positive electrode relative to the negative electrode and compensate for undercharging of the negative electrode during recycling.

Lithium rechargeable inorganic electrolyte cell

Method of making a flexible metal halide, specifically CuCl.sub.2, positive electrode for a lithium/sulfur dioxide rechargeable electrochemical cell. CuCl.sub.2 is mixed with graphite and a binder such as TFE. Methylene chloride or 1,1,2 trichlorotrifluoroethane is added to form a slurry. The slurry is pasted onto an inert, electrically-conductive, screen-like substrate. The slurry is dried and then heated to cure the TFE. The resulting electrode structure is pressed between rollers to reduce its thickness.

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Watertown, MA, United States of America

Frederick W Dampier