Nonaqueous electrochemical cell
AssigneeUnion Carbide Corporation
InventorTibor Kalnoki-Kis
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Abstract
A nonaqueous cell comprising an active metal anode, such as a lithium, sodium, potassium or aluminum anode, a liquid cathode-electrolyte comprising a solute dissolved in a solvent which is an oxyhalide of an element of Group V or group VI of the Periodic Table and wherein the surface of the anode contacting the cathode-electrolyte is coated with a vinyl polymer film.
Claims10
A nonaqueous electrochemical cell comprising an active metal anode selected from the group consisting of lithium, sodium, potassium and aluminum anodes, a cathode collector and an ionically conductive cathode-electrolyte solution containing a solute dissolved in a liquid oxyhalide active cathode depolarizer of an element of Group V or Group VI of the Periodic Table, the improvement which comprises the surface of the active metal anode that contacts the electrolyte coated with a vinyl polymer film which effectively prevents passivation of the anode during storage, said vinyl polymer film tenaciously adhering to the surface of the anode and being ionically permeable, electronically nonconductive and cathode-electrolyte insoluble.
Dependencies are inferred from the claim text.