Separation liquid and method for recovery of metal-inorganic composite electrode assembly

Abstract

A separation liquid includes an active component and 95% or more by weight of deionized water, where the separation liquid has a pH of 0.5-2, and the active component is composed of oxalic acid and acetic acid in a weight ratio of 1:10-20. A method for recovery of a metal-inorganic composite electrode assembly is also provided, in which a spent lithium-ion battery is dismantled to obtain a cell; the cell is crushed and magnetically separated to yield a mixture containing cathode sheet, anode sheet, separator and residual electrolyte; the mixture is dispersed into the separation liquid under dynamic stirring to obtain a slurry; the separator is removed by flotation, and residual slurry is sieved to isolate graphite anode particles from a mixture of current collector fragments and cathode fragments; and the oversize fraction is subjected to wet screening, and the undersize fraction is dried and crushed.

Dependencies are inferred from the claim text.