ELECTRICAL CONNECTING ON LITHIUM ANODES

摘要

Connector for electrical contact on an anode sheet of a polymer-electrode lithium generator which consists of one or more multilayer electrochemical cells. The cell comprises at least one sheet based on lithium with a thickness lying between approximately 1 and 50 microns, forming the anode and its collector and furthermore includes a cathode and its collector as well as the polymer electrolyte. One side end of the anode sheet extends beyond the corresponding ends of the cathode and of the collector to form an overhang region. A metallic layer consisting of at least one rigid metal which is compatible with lithium is in electrical contact with the side end of the anode sheet but without electrical contact with the other components of the cell. The metallic layer constitutes the external terminal of the generator when it is bare. According to one variant, an intermediate conducting and cohesive metallic region, consisting of lithium or lithium-rich ductile alloys is in intimate contact with the side end of the anode sheet, and the abovementioned metallic layer is therefore in electrical contact with the side end of the anode sheet via the intermediate lithium region. Generators fitted with such a contact connector as well as a method of preparing these contact connectors are described.