RECHARGEABLE THIN FILM BATTERY WITH IN SITU FORMED LITHIUM ANODE HAVING PERMEABLE ANODE CURRENT COLLECTOR

摘要

A rechargeable thin film lithium battery has a battery cell at least partially enclosed by a casing (36). The battery cell comprises a cathode (18) and cathode current collector (16) on a substrate (12) that are electrically coupled to one another and to an electrolyte (20), and a permeable anode current collector (24) having a first surface electrically coupled to the electrolyte and an opposing second surface. The permeable anode current collector (24) has a thickness that is less than about 0,1 micrometer. The usually utilized overlayer on the opposing second surface of the anode current collector can be omitted. Positive and negative terminals (34, 32) are electrically connected to the battery cell.