▎ 摘　　要

NOVELTY - Separating rubidium in salt lake brine by using polyvinyl alcohol/chitosan/graphene/ferrous cyanide nickel copper composition, comprises preparing nano-grade ferrocyanide nickel-copper NiCF-CuCF by ultrasonic assistant coprecipitation method and coating nano-scale nickel-copper ferrocyanide (NiCF-CuCF) using conductive polyvinyl alcohol/chitosan/graphene hydrogel PG to obtain PG/NiCF-CuCF composite material. The PG/NiCF-CuCF composite material is used as the fluidized electrode material of the packed bed electrode reactor under a certain condition, firstly selectively adsorbing rubidium in the brine, desorbing rubidium by electric removing ion exchange method, material synchronous regeneration, circulating and reciprocating to obtain rubidium purifying liquid. USE - The method is useful for separating rubidium in salt lake brine by using polyvinyl alcohol/chitosan/graphene/ferrous cyanide nickel copper composition. ADVANTAGE - The method saves 1/4 of the time for separating rubidium from salt lake brine, compared with the single extraction method, the cost is saved by 1/5.