Nickel-zinc secondary battery and preparation method thereof

The invention relates to a nickel-zinc secondary battery and a preparation method thereof. The technical scheme is that: the preparation method comprises the following steps of: mixing 85 to 99 weight percent of anode active substance, 0.5 to 10 weight percent of anode additive and 0.5 to 5 weight percent of anode bonding agent uniformly; adding water into the mixture to prepare paste; coating the paste on an anode conductive matrix; drying, performing roll forming and slicing to obtain an anode plate; mixing 75 to 99 weight percent of cathode active substance, 0.5 to 20 weight percent of cathode additive and 0.5 to 5 weight percent of cathode bonding agent uniformly; adding water into the mixture to prepare paste; coating the paste on a cathode conductive matrix; drying, performing roll forming and slicing to obtain a cathode plate; separating the anode plate from the cathode plate by using diaphragm paper; winding the separated anode plate and cathode plate to be a cylindrical shape; sleeving the cylindrica