NOVELTY - The rechargeable nickel zinc cell comprises a jellyroll electrode assembly comprising a nickel positive electrode, a zinc negative electrode and a separator layer disposed between the positive and negative electrodes, a can (113) present in electrical communication with the nickel positive electrode, a vent cap (109) that is affixed to a base of the can and is present in electrical communication with the can, and a negative collector disk (103) that is present in electrical communication with the zinc negative electrode and is electrically isolated from the can.    USE - The rechargeable nickel zinc cell such as battery is useful as power tools for electric vehicles, plug-in hybrid electric vehicles and consumer electronic products.    ADVANTAGE - The rechargeable nickel zinc cell has long service life, high power and energy densities, and excellent performance, and is simple to manufacture.    DETAILED DESCRIPTION - The rechargeable nickel zinc cell comprises a jellyroll electrode assembly comprising a nickel positive electrode, a zinc negative electrode and a separator layer disposed between the positive and negative electrodes, a can (113) present in electrical communication with the nickel positive electrode, a vent cap (109) that is affixed to a base of the can and is present in electrical communication with the can, and a negative collector disk (103) that is present in electrical communication with the zinc negative electrode and is electrically isolated from the can. The can comprises an aperture (108) at the base of the can. The vent cap is configured to vent gas from the rechargeable nickel zinc cell via the aperture. The negative collector disk is configured as a closure to the open end of the can. The negative collector disk includes a metal disk coated with a hydrogen evolution resistant material. The hydrogen evolution resistant material comprises a metal, an alloy and a polymer. The rechargeable nickel zinc cell further comprises a positive collector disk interposed between, and in electrical communication with, the nickel positive electrode and the base of the can. The positive collector disk comprises nickel foam. The nickel positive electrode comprises a nickel foam substrate contained within a nickel oxide matrix. The zinc negative electrode comprises a copper or brass substrate plated with tin or tin/zinc having a thickness of about 40-80 mu m and a zinc oxide based electrochemically active layer. An INDEPENDENT CLAIM is included for a method of making a rechargeable nickel zinc cell.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic exploded view of a cell assembly.    Negative collector disk (103)    Aperture (108)    Cap (109)    Flexible gasket (111)    Can. (113)