Recovery of nickel-based battery and negative electrode of zinc-nickel battery

The recovery and regeneration methods of nickel-based batteries were summarized, and the advantages and disadvantages of pyrogenic, wet recovery and regeneration technologies commonly used in nickel-based batteries at present were analyzed. A recovery and regeneration idea of zinc-nickel batteries was proposed, and the negative electrode recovery method in this idea was explored. The results show that the idea of recovering and regenerating zinc-nickel battery is feasible, and the negative electrode recovery effect is good under this idea. The leaching rate of Zn and Cu in waste cathode can reach 99.94% and 99.99% respectively by nitric acid leaching. The removal rate of impurity copper in leaching solution purification process can reach more than 99% by zinc powder replacement and extraction.