▎ 摘　　要

NOVELTY - Preparation of carbon nanotube/graphene three-dimensional nano structure capacitive desalting electrode comprises putting graphite oxide and carbon nanotube at a ratio of 99:1-4:1 into deionized water, ultrasonically dispersing, drying, heating, and preserving heat to obtain carbon nano tube/graphene three-dimensional composite material; adding PTFE emulsion as adhesive into obtained composite material, uniformly mixing the coated graphite electrode on paper, and then drying overnight. USE - A preparation method of carbon nanotube/graphene three-dimensional nano structure capacitive desalting electrode. ADVANTAGE - The method is simply carried out at lower temperature and is easy to operate. The prepared electrode has good electric conductivity and good desalting performance. DETAILED DESCRIPTION - Preparation of carbon nanotube/graphene three-dimensional nano structure capacitive desalting electrode comprises: (A) in ice-water bath condition, slowly adding graphite to 98 wt.% concentrated sulfuric acid while stirring, slowly adding potassium permanganate, where mass ratio of the graphite: concentrated sulfuric acid: potassium permanganate is 1: 40-100: 2-8 at 32-38 degrees C constant temperature water bath, stirring and insulating for 1-6 hours, after finishing the reaction, slowly adding de-ionized water to dilute, stirring for several minutes, adding graphite and 30% hydrogen peroxide at a mass ratio of 1:7-10, standing and filtering, washing the filter cake until neutral, drying at room temperature to obtain oxidized graphite, putting graphite oxide and carbon nanotube at a ratio of 99:1-4:1 into deionized water, ultrasonically dispersing, drying, heating obtained mixture in a tubular furnace, and preserving heat for a period to obtain carbon nano tube/graphene three-dimensional composite material; and (B) adding 5-15% PTFE emulsion as adhesive into obtained composite material, uniformly mixing the coated graphite electrode on paper, and then drying overnight at 100-110 degrees C, obtaining carbon nano tube/graphene three-dimensional structure capacitive desalting electrode.