▎ 摘　　要

NOVELTY - Preparing electrode material graphene comprises (1) uniformly mixing and graphene and chemical etching agent, by hydro-thermal treatment to obtain the graphene hydrogel, soaking graphene hydrogel, freezing, drying and annealing treatment to obtain the graphene, (2) grinding the obtained graphene, mixing with the composite conductive agent and organic solvent, coating and drying to obtain the electrode precursor graphene the graphene electrode precursor is processed by plasma to obtain the electrode graphene. USE - The method is useful for preparing electrode material graphene. ADVANTAGE - The method improves the desalting capacity of the capacitance de-ionized technology, reduces the energy consumption of the desalting process and realizes the target of efficient capacitance de-ionized desalting. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for electrode material graphene prepared by above method.