Graphite electrode device for preparing graphene by stripping graphite through electrochemical method

Abstract

The invention discloses raphite electrode device for preparing graphene by stripping graphite through electrochemical method. The graphite electrode device comprises graphite and a conductive clamp, the conductive clamp is provided with a first metal clamping piece and a second metal clamping piece, and the edge of the graphite is clamped between the first metal clamping piece and the second metalclamping piece. The first metal clamping piece extends outwards from one side covering the edge part of the graphite to form a strip-shaped conductive tab, the conductive tab is clamped by an insulating plate, the outward end parts of the conductive tab and the insulating tab are provided with semicircular holes which are consistent in direction and have the same radius as the diameter of a conductive bus, and the semicircular hole parts of the conductive tab extend out of the insulating plate; a filter bag film wrapped with graphite is arranged outside the graphite, and the electrode deviceis connected with the conductive bus in a hanging manner and is fixed on the bus. The device is low in cost, and the obtained graphene is good in quality and high in controllability.

Description

technical field [0001] The invention relates to graphene technology, in particular to a graphite electrode device for electrochemically exfoliating graphite to prepare graphene. Background technique [0002] Graphene is a single layer of carbon atoms with a two-dimensional honeycomb structure. It has excellent electrical, thermal, optical and mechanical properties, and has a wide range of application prospects. Despite its many advantages, graphene materials have yet to enter people's daily lives, and the main obstacles to their commercialization lie in high production costs and limited scalability. Therefore, the development of low-cost, high-quality, and large-scale preparation methods is the focus of current graphene research. [0003] In recent years, electrochemical exfoliation of graphite has attracted increasing attention as a potentially scalable method for producing graphene due to its simplicity, rapidity, and greenness. Under the action of an electric field, the...

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Problems solved by technology

At present, the graphite electrode used to prepare graphene by electrochemical method is only composed of a small clip with a wire directly clamping the graphite sheet. The contact surface between the conductive clip and the graphite sheet is small, and it is easy to generate heat during the electrolysis process with high current, and it is easy to fuse the line. and cause damage to the structure of graphite flakes, and the scale is too small to meet the industrial preparation, and there is no graphite electrode device specially used for large-scale production of graphene, so it is urgent to develop a special for large-scale production of graphene. Design method of graphite electrode device and corresponding device

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