Patent application number | Description | Published |
20130157135 | LITHIUM SALT-GRAPHENE-CONTAINING COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF - 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. Furthermore, particle agglomeration and growing up are reduced in the process of calcination. | 06-20-2013 |
20130177784 | LITHIUM IRON PHOSPHATE COMPOSITE MATERIAL, PRODUCTION METHOD AND USE THEREOF - 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. The production method comprises: preparing an iron salt mixed solution according to the mole ratio of P:Fe=1:1; adding the above solution into an organic carbon source aqueous solution, followed by mixing and reacting, so as to obtain nano-iron phosphate covered with organic carbon source; adding the above nano-iron phosphate covered with organic carbon source and a lithium source compound into an aqueous solution of graphene oxide, agitating, mixing, and then spray drying, so as to obtain a precursor of lithium iron phosphate composite material; calcinating said precursor in a reduction atmosphere and cooling naturally, so as to obtain said lithium iron phosphate composite material. The material is used for lithium ion battery or positive electrode material. | 07-11-2013 |
20130236785 | ELECTRODE PLATE, PREPARING METHOD THEREFOR, SUPER CAPACITOR AND LITHIUM ION BATTERY - An electrode plate is provided. The electrode plate includes a substrate and a coating coated on the substrate plate, wherein the coating includes fluoride oxide graphene materials. The fluoride oxide graphene material has excellent conductivity, so that the electrode material which is made of the graphene material has high energy density and electrical conduction efficiency. A preparing method for the electrode plate, and a super capacitor and a lithium ion battery both prepared with the electrode plate are also provided. | 09-12-2013 |
20130236786 | ELECTRODE SHEET AND ITS PREPARATION METHOD AND SUPER CAPACITOR AND LITHIUM ION BATTERY - An electrode sheet is provided. The electrode sheet includes a substrate and a coating layer coated on the substrate. The coating layer includes a graphene fluoride stuff, the graphene fluoride stuff has excellent conductivity. An electrode material produced by the graphene fluoride stuff has higher energy density and higher conductivity. Furthermore, a preparation method of the electrode sheet, a super capacitor and a lithium ion battery used the electrode sheet are provided. | 09-12-2013 |
20130237723 | FLUORINATED GRAPHENE OXIDE AND PREPARATION METHOD THEREOF - Provided are a fluorinated graphene oxide and a preparation method thereof. In the fluorinated graphene oxide, the mass percent of fluorine is 0.5%09-12-2013 | |
20130252135 | PT-RU NANO-ALLOY/GRAPHENE CATALYST, PREPARATION METHOD AND USE THEREOF - A Pt—Ru nano-alloy/graphene catalyst comprises graphene as a support, and a Pt—Ru nano-alloy loaded on the graphene. The use of graphene as support for the catalyst takes advantage of the ion effect and tow-dimensional ductility of graphene, which increase the stability of the catalyst. The catalyst is prepared by a reverse micelles system method which provides a micro-environment (i.e. water-in-oil microemulsion), so that the particle size of the resulting nano-alloy particles can be regulated easily and is more uniformly distributed. The use of the catalyst in electrochemistry is also disclosed. | 09-26-2013 |
20130261352 | FLUOROGRAPHENE AND PREPARATION METHOD THEREOF - A fluorographene and preparation method thereof are provided. For the said fluorographene, the fraction of F is 0.510-03-2013 | |
20130334467 | CONDUCTIVE POLYMER MATERIALS AND PREPARING METHOD AND USES THEREOF - A conductive polymer material and preparing method and uses thereof are provided. The conductive polymer material comprises conductive polymer and fluorinated graphene doping thereof. The weight ratio of the conductive polymer to the fluorinated graphene is 1:0.05-1. The conductive polymer is one of polythiophene or its derivatives, polypyrrole or its derivatives, and polyaniline or its derivatives. The cycle stability of the conductive polymer material is greatly enhanced for doping of the fluorinated graphene, and the conductive polymer contributes to the good capacitance properties. The preparing method can be operated simply with cheaper cost and lower request for equipments, and is suitable for industrial production. | 12-19-2013 |
20130344393 | COMPOSITE MATERIAL OF CARBON-COATED GRAPHENE OXIDE, PREPARATION METHOD AND APPLICATION THEREOF - A composite material of carbon-coated graphene oxide, its preparation method and application are provided. The method for preparing the composite material comprises the following steps: obtaining graphene oxide; mixing the said graphene oxide and the source of organic carbon according to the mass ratio of 1-10:1 in water to form a mixed solution; making the mixed solution react hydrothermally under the condition of 100˜250° C., cooling, solid-liquid separating, washing, and drying to attain the composite material. The advantages of the preparation method are simple process, low energy consumption, low cost, no pollution and suitable for industrial production. The advantages of composite material are stable structural performance, high electric conductivity. Lithium ion battery and/or capacitor have/has high power density while the composite material is used to prepare the anode material of lithium ion battery and/or capacitor. | 12-26-2013 |
20140158928 | DOUBLE-CENTER QUATERNARY AMMONIUM SALT ION LIQUID, PREPARATION METHOD THEREFOR AND USE THEREOF - A double-center quaternary ammonium salt ion liquid having the structural formula (I), wherein n=2, 3 or 6, Y | 06-12-2014 |
20140166921 | DOUBLE-CENTER BIPYRIDYL CATIONIC ION LIQUID, PREPARATION METHOD THEREFOR AND USE THEREOF - Disclosed is a double-center bipyridyl cationic ion liquid prepared by reacting bipyridyl with haloalkane for synthesis of dialkyl bipyridyl halide, and converting the halogen ion in the dialkyl bipyridyl halide to the target anion via an ion-exchange reaction, to give the final target ionic liquid. Also disclosed are an organic electrolyte containing the double-center bipyridyl cationic ion liquid and a preparation method therefor. | 06-19-2014 |