Mesopore vanadium oxide/carbon composite nano material and preparation method thereof

A nanomaterial and vanadium oxide technology, applied in the field of mesoporous vanadium oxide/carbon composite nanomaterials and their preparation, can solve the problems of unfavorable ion/electron transfer, specific surface area, pore volume and pore size, etc. The effect of simple preparation process and high theoretical specific capacity

Inactive Publication Date: 2014-11-26
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of having larger specific surface area, pore volume and pore diameter in order to solve above-mentioned vanadium pentoxide / carbon material nano-composite and technical problems such as being unfavorable for the transfer of ion / electron etc. Mesoporous vanadium oxide / carbon composite nanomaterial with specific surface area, pore volume and large pore size and preparation method thereof

Method used

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  • Mesopore vanadium oxide/carbon composite nano material and preparation method thereof
  • Mesopore vanadium oxide/carbon composite nano material and preparation method thereof
  • Mesopore vanadium oxide/carbon composite nano material and preparation method thereof

Examples

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Embodiment 1

[0043] A method for preparing a mesoporous vanadium oxide / carbon composite nanomaterial, specifically comprising the following steps:

[0044] (1) Disperse 0.6g of nonionic surfactant in 3g of solvent ethanol and stir at 40°C for 5min until dissolved. Dissolve 0.06g of inorganic vanadium source in 3g of solvent ammonia, stir to dissolve, and then put the dissolved inorganic Add the ammonia solution of the vanadium source to the ethanol solution in which the nonionic surfactant is dissolved, stir for 5 minutes, then add 0.09 g of organic silicon source and 0.3 g of organic high molecular polymer in sequence, and continue stirring at room temperature for 20 minutes to obtain a homogeneous solution;

[0045] The amount of the above-mentioned nonionic surfactant, organic polymer, organosilicon source, inorganic vanadium source and solvent is calculated by mass ratio, that is, nonionic surfactant: organic polymer: organosilicon source: inorganic vanadium source : The ratio of solvent...

Embodiment 2

[0066] A method for preparing a mesoporous vanadium oxide / carbon composite nanomaterial, specifically comprising the following steps:

[0067] (1) Disperse 0.6g of non-ionic surfactant in 11g of solvent ethanol and stir at 40°C for 5 minutes until dissolved. At the same time, dissolve 0.57g of inorganic vanadium source in 11g of solvent ammonia, stir to dissolve, and then put Add the ammonia solution of the dissolved inorganic vanadium source to the ethanol solution in which the nonionic surfactant is dissolved, stir for 5 minutes, then add 0.48 g of organic silicon source and 1.5 g of organic high molecular polymer in turn, and continue stirring for 20 minutes at room temperature until the formation of homogeneous solution;

[0068] The amount of the above-mentioned nonionic surfactant, organic polymer, organosilicon source, inorganic vanadium source and solvent is calculated by mass ratio, that is, nonionic surfactant: organic polymer: organosilicon source: inorganic vanadiu...

Embodiment 3

[0086] A method for preparing a mesoporous vanadium oxide / carbon composite nanomaterial, specifically comprising the following steps:

[0087] (1) Disperse 0.6g of non-ionic surfactant in 24g of solvent ethanol and stir at 40°C for 5 minutes until dissolved. At the same time, dissolve 1.2g of inorganic vanadium source in 24g of solvent ammonia, stir to dissolve, and then dissolve Add the ammonia solution of the inorganic vanadium source into the ethanol solution in which the nonionic surfactant is dissolved, stir for 5 min, then add 0.9 g of organic silicon source and 3.0 g of organic high molecular polymer in turn, and continue stirring for 20 min at room temperature until a homogeneous mixture is formed. phase solution;

[0088] The amount of the above-mentioned nonionic surfactant, organic polymer, organosilicon source, inorganic vanadium source and solvent is calculated by mass ratio, that is, nonionic surfactant: organic polymer: organosilicon source: inorganic vanadium s...

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Abstract

The invention discloses a mesopore vanadium oxide / carbon composite nano material and a preparation method thereof. The mesopore vanadium oxide / carbon composite nano material is of a meso-structure. According to calculation by an atom percentage, the content of a vanadium element is 20% to 60%, and the balance being carbon. A pore diameter is distributed from 1.98 nm to 2.3 nm, a specific surface area is about 759.39 m<2> / g to 800.65 m<2> / g, and a pore volume is 0.65 cm<3> / g to 1.33 cm<3> / g. The preparation method involves preparing the mesopore vanadium oxide / carbon composite nano material with the large specific surface area, the large pore volume and the large pore diameter through an evaporation induction self-assembling method by taking a non-ionic surface active agent as a template agent and ammonium metavanadate as a vanadium source. The mesopore vanadium oxide / carbon composite nano material serves as an electrode material for manufacturing a supercapacitor.

Description

technical field [0001] The invention belongs to the field of preparation of electrode materials, and in particular relates to a mesoporous vanadium oxide / carbon composite nanomaterial and a preparation method thereof. Background technique [0002] As a new environment-friendly energy storage system between traditional capacitors and lithium-ion batteries, supercapacitors have many excellent characteristics unmatched by other energy storage devices, and can provide green energy for fossil energy depletion and environmental degradation. solution. Its power density is significantly higher than that of lithium-ion batteries, and its energy density is 10 to 100 times that of traditional capacitors. Supercapacitors have short charging and discharging time, relatively high energy density, high power density, and long cycle life. In addition, supercapacitors also have the advantages of small leakage current, ultra-low series equivalent resistance, and simple requirements for chargi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/36
CPCY02E60/13
Inventor 马立梦沈绍典王勤毛东森卢冠忠
Owner SHANGHAI INST OF TECH
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