Abstract: Provided are a fluorinated graphene oxide and a preparation method thereof. In the fluorinated graphene oxide, the mass percent of fluorine is 0.5%<F %<40%; the mass percent of carbon is 50%<C %<80%, and the mass percent of oxygen is 0.5%<0%<30%. The preparation method comprises the following steps: providing graphite; preparing graphene oxide by using the graphite; and subjecting the graphene oxide to reacting with a mixed gas of N2 and F2 at 20˜200° C. for 0.5˜24 h, to prepare the fluorinated graphene oxide. The preparation method is simple, has fewer steps, and has better prospect of application.

Abstract: A porous graphene material and preparation method thereof are provided. The pore diameter of the porous graphene material is 1 nm-10 ?m and its specific surface area is 100 m2/g-2000 m2/g. The method for preparing the porous graphene material comprises the following steps: mixing graphene or graphene oxide with pore-forming agent, and pressing to obtain bulk or powder particle composite; heating the composite, and releasing gases from the pore-forming agent to obtain the porous graphene material. The porous graphene material can be used as electrode materials of supercapacitor and lithium ion battery.

Abstract: Provided are a lithium iron phosphate composite material, the production method thereof and the use thereof The lithium iron phosphate composite material has a micro-size particle structure, which contains nano-size grains of lithium iron phosphate and graphene inside, and bears nano-carbon particulates outside. The lithium iron phosphate composite material has the properties of high conductivity, high-rate charge/discharge performance and high tap density.

Abstract: The invention relates to a composite electrode material, a manufacturing method and application thereof. The composite electrode material comprises manganese oxide, graphene and graphite oxide. The manufacturing method includes the following steps, first step: adequately milling graphene then ultrasonic dispersing it into water; second step: dissolving hypermanganate into the water containing graphene and obtaining the aqueous solution containing permanganate ion and graphene; third step: adding polyethylene glycol into the aqueous solution of second step under stirring and obtaining mixed solution; fourth step: stirring the mixed solution until fuchsia completely faded, then filtering, washing and drying precipitate and obtaining the composite electrode material. The composite electrode material has the following advantages: high specific surface area, high conductivity and high specific capacity, and can be applied to supercapacitor electrode material.

Abstract: A lithium salt-graphene-containing composite material and its preparation method are provided. The composite material has the microstructure which comprises carbon nanoparticles, lithium salt nanocrystals and graphene, wherein the surface of lithium salt nanocrystals is coated with carbon nanoparticles and graphene. The preparation method comprises concentrating and drying a mixed solution, then calcinating the solid. The lithium salt-graphene-containing composite material has excellent electric performance and stability since the problem of low electric performance resulted from carbon coating on the surface of lithium salt or coating imperfection resulted from graphene coating on the surface of lithium salt is effectively solved. For the more uniform and compacted combination between graphene and lithium salt nanocrystals, the graphene will not fall off and the composite material has a high capacity ratio, energy density and conductivity.