Preparation method of nanometer compounding capacitor type desalting electrode of carbon nanometer pipe/graphene sandwich structure

Abstract

The invention relates to a preparation method of a nanometer compounding capacitor type desalting electrode of a carbon nanometer pipe / graphene sandwich structure. According to the invention, carbon nanometer pipes in a composite electrode material are uniformly supported among grapheme layers to form a sandwich structure, and one end of each carbon nanometer pipe is connected with stripping graphene. According to the invention, the carbon nanometer pipes situ grow through chemical vapor deposition on graphene surface, thereby realizing low-cost and large-scale preparation of the carbon nanometer pipe / graphene sandwich structure nanometer composite material; and the carbon nanometer pipe / graphene sandwich structure nanometer composite material and polytetrafluoroethylene latex liquid are coated on a piece of graphite paper in a mixing uniformity manner, and the carbon nanometer pipe / graphene sandwich structure nanometer compounding capacitor type desalting electrode is prepared after drying. The prepared carbon nanometer pipe / graphene sandwich structure nanometer composite electrode provided by the invention has good conductibility, good desalting performance, and has potential application prospects on a low energy-consumption and low-cost capacitor type desalting aspect.

Description

technical field

[0001] The invention relates to a method for preparing a carbon nanotube / graphene sandwich structure nanocomposite capacitive desalination electrode. The carbon nanotube / graphene sandwich structure nanocomposite capacitive desalination electrode prepared by the invention is low-cost, can be produced in batches, and has high efficiency. , Low energy desalination performance. It belongs to the technical field of electric desalination electrode manufacturing technology. Background technique

[0002] The capacitive desalination method is a new desalination technology based on the principle of electric double layer capacitance. Under the action of an external voltage (1-2V), the soluble salt ions in the solution move to the oppositely charged electrode and adsorb on the electrode, thereby achieving The purpose of desalination of salt water; when enough ions are adsorbed on the electrode, the electrode is short-circuited or reversed, and the salt ions adsorbed on ...