Patent ID: 6713987
Filing Date: 2004-03-30
Classification: H01M,Y02E,Y02P

Abstract:
A rechargeable battery comprising:(a) a casing; (b) a battery cell at least partially enclosed by the casing, the battery cell comprising: (1) a substrate, (2) a cathode and cathode current collector on the substrate, the cathode being electrically coupled to the cathode current collector, (3) an electrolyte electrically coupled to the cathode or cathode current collector, and (4) a permeable anode current collector having a first surface electrically coupled to the electrolyte and an opposing second surface, the permeable anode current collector: (1) having a thickness that is less than about 1000 Ã¥ and that is sufficiently small to allow cathode material to permeate therethrough to form an anode on the second surface of the permeable anode current collector when the battery cell is electrically charged, and (2) that is absent an overlayer on the opposing second surface of the anode current collector; and (c) positive and negative terminals that electrically connect to the battery cell.