Abstract: The present invention further provides a nickel-zinc battery system used for rechargeable electrical tools. The present invention further provides a method for manufacturing a battery set of the nickel-zinc battery system. A diode of the nickel-zinc battery set manufactured by the method can be hidden in a receiving slot.

Abstract: The present invention discloses a nickel-zinc battery assembly, which is adapted to be used in practice, wherein the nickel-zinc battery assembly comprises a plurality of nickel-zinc batteries, a plurality of diodes and a plurality of connecting sheets, wherein the diodes are stridden across the batteries and electronically connected to the nickel-zinc batteries respectively, and the connecting sheets are provided between every two neighboring batteries respectively, wherein the positive end of the diode is connected to the cathode of the nickel-zinc battery, and the negative end of the diode is connected to the anode of the nickel-zinc battery.

Abstract: A method of manufacturing nickel electrode for a nickel-zinc battery includes the steps of: providing a nickel oxyhydroxide (NiOOH) and a nickel metal; adding a first additive consisting of transition metal oxide to the nickel oxyhydroxide and the nickel metal; and adding a binder for combining the first additive to the nickel oxyhydroxide and the nickel metal, wherein the first additive contains one or more transition metal oxides selected from a group consisting of ruthenium oxide (RuO2) and rhodium oxide (RhO2). Metal oxide or hydroxide with a rare earth oxide improves the electrode capacity and shelf life. Zinc oxide is added to the cathode to facilitate charger transfer and improve the characteristics of high rate discharging. The cathode significantly increases the charging efficiency, promotes the overpotential of oxygen evolution, and intensifies the depth of discharging, thereby increasing the overall efficiency and lifespan of the battery.