Patent ID: 7704621
Filing Date: 2010-04-27
Classification: H01M

Abstract:
1. A battery, comprising: a cathode comprising an active cathode mixture coated on a cathode current collector arranged as a tube having two longitudinally-extending ends that have been connected together to form a seam, the cathode having an interior surface and an exterior surface, the cathode defining a cavity and two open ends; a longitudinally-extending positive tab connected to the cathode current collector; a separator disposed adjacent to the interior surface of the cathode; an anode disposed adjacent to the separator and inside the cavity; an air-permeable, liquid-impermeable barrier layer disposed adjacent to the exterior surface of the cathode, the barrier layer defining an exterior surface of the battery; two end members connected to the open ends of the cathode; and an anode current collector extending through the two end members wherein the positive tab is connected to the current collector along the seam; and further comprising a longitudinally-extending strip of sealant disposed over the positive tab.