Porous graphene nanosheet, preparation method and application of porous graphene nanosheet as electrode material

Abstract

The invention relates to a porous graphene nanosheet preparation method, which takes resin as a carbon source, resin and a metal source are solidified and charred to obtain carbon plate with a hierarchical pore structure, and the carbon plate is graphitized to obtain the porous graphene nanosheet. The preparation method of the porous graphene nanosheet has the advantages of simple process, low cost, little pollution and easy realization of large scale production; and the porous graphene nanosheet presents high capacity and excellent multiplying power performance when being as a cathode material of a lithium ion battery.

Description

technical field

[0001] The invention relates to a porous graphene nanosheet, a preparation method and an application in lithium ion batteries, belonging to the fields of electrochemistry and new energy materials. Background technique

[0002] Graphene is a single layer of carbon atoms through sp 2 Carbonaceous materials with a two-dimensional honeycomb lattice structure formed by hybridization close packing are the basic structural units of fullerenes, carbon nanotubes and graphite. Graphene's unique two-dimensional sheet structure makes it have high strength, excellent electrical conductivity, thermal conductivity, chemical stability and good ductility, etc., so it can be used in energy storage devices such as lithium-ion batteries and supercapacitors, sensors, photoelectric conversion etc. have extensive and meaningful research and application value.

[0003] Porous graphene refers to a class of materials containing nanopores on the surface of graphene. Due to its large...

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