Patent ID: 9325018
Filing Date: 2016-04-26
CPC Classification: H01M,Y02P,Y10T

Claim Text:
1. A method for making a cathode outer wrap battery which does not experience premature voltage drop-off upon intermittent discharge of the battery, the method comprising: continuously coating a cathode mixture comprising iron disulfide onto both sides of a solid foil current collector and subsequently creating a plurality of zones of reduced electrochemical activity on at least one side of the current collector; cutting the coated cathode into individual strips to create a plurality of individual cathodes so that the zone of reduced electrochemical activity is positioned at a terminal end of each individual cathode; providing a separator and an anode consisting essentially of lithium or a lithium alloy wherein the anode does not include a current collector; spirally winding the anode, the individual cathode strip and the separator into a electrode assembly so that less than 50% of an outermost surface of the electrode assembly, excluding the separator and optional non active components, is covered by the anode and the zone of reduced electrochemical activity is situated along the outermost surface of the electrode assembly; and disposing the electrode assembly in a conductive container, introducing a non-aqueous electrolyte to the container and closing the container.