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Method for in-situ synthesis of compound of rutile TiO2 mesocrystal and graphene

An in-situ synthesis and graphene technology, applied in the direction of sustainable manufacturing/processing, electrical components, electrochemical generators, etc., can solve the problems of difficult synthesis, hidden dangers of safety performance, poor rate performance, etc., and achieve good reproducibility, The effect of low cost and simple operation

Inactive Publication Date: 2014-08-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hidden dangers of safety performance and poor rate performance of metallic lithium and carbon materials, and the fact that Li 4 Ti 5 o 12 The disadvantages such as difficulty in synthesis limit its large-scale application

Method used

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  • Method for in-situ synthesis of compound of rutile TiO2 mesocrystal and graphene
  • Method for in-situ synthesis of compound of rutile TiO2 mesocrystal and graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of rutile TiO 2 The preparation method of mesogen and graphene compound, comprises the following steps:

[0023] 1) Disperse 0.68 mL of dodecylbenzenesulfonic acid in 70 mL of 2 mol / L nitric acid solution;

[0024] 2) After a uniform emulsion is formed, add 2 mL graphene oxide solution (5 mg / mL) dropwise, stir evenly, and finally add 0.68 mL tetrabutyl titanate dropwise, and continue stirring evenly;

[0025] 3) The resulting mixture was reacted in a water bath at 70 °C for 48 h, taken out, cooled to room temperature naturally, centrifuged to separate the product, washed 5 times with alcohol water, and dried to obtain rutile TiO 2 Mesogenic and graphene oxide composites.

[0026] 4) Weigh 100 mg rutile TiO 2 The composite of mesogen and graphene oxide was dispersed in 35 mL of water, put into a reaction vessel, and reacted in an oven at 140 °C for 6 h, taken out, cooled naturally to room temperature, centrifuged to separate the product, washed with alcohol wat...

Embodiment 2

[0031] A kind of rutile TiO 2 The preparation method of mesogen and graphene compound, comprises the following steps:

[0032] 1) Disperse 1.035 mL of dodecylbenzenesulfonic acid in 70 mL of 2 mol / L nitric acid solution;

[0033] 2) After a uniform emulsion is formed, add 3 mL graphene oxide solution (5 mg / mL) dropwise, stir evenly, and finally add 0.68 mL tetrabutyl titanate dropwise, and continue stirring evenly;

[0034] 3) The resulting mixture was reacted in a water bath at 70 °C for 48 h, taken out, cooled to room temperature naturally, centrifuged to separate the product, washed 5 times with alcohol water, and dried to obtain rutile TiO 2 Mesogenic and graphene oxide composites.

[0035] 4) Weigh 100 mg rutile TiO 2 The composite of mesogen and graphene oxide was dispersed in 35 mL of water, put into a reaction kettle, and reacted in an oven at 140 °C for 6 h, then taken out, cooled naturally to room temperature, centrifuged to separate the product, washed with alcoh...

Embodiment 3

[0039] A kind of rutile TiO 2 The preparation method of mesogen and graphene compound, comprises the following steps:

[0040] 1) Disperse 0.68 mL of dodecylbenzenesulfonic acid in 70 mL of 4 mol / L nitric acid solution;

[0041] 2) After a uniform emulsion is formed, add 2 mL of graphene oxide solution (5 mg / mL) dropwise, stir evenly, and finally add 0.68 mL tetrabutyl titanate dropwise, and continue stirring evenly;

[0042]3) The resulting mixture was reacted in a water bath at 70 °C for 72 h, taken out, cooled to room temperature naturally, centrifuged to separate the product, washed 5 times with alcohol water, and dried to obtain rutile TiO 2 Mesogenic and graphene oxide composites.

[0043] 4) Weigh 100 mg rutile TiO 2 The composite of mesogen and graphene oxide was dispersed in 35 mL of water, put into a reaction kettle, and reacted in an oven at 140 °C for 6 h, then taken out, cooled naturally to room temperature, centrifuged to separate the product, washed with alco...

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Abstract

The invention discloses a method for in-situ synthesis of compound of rutile TiO2 mesocrystal and graphene. A simple hydrothermal method is adopted to carry out in-situ synthesis on the compound of the rutile TiO2 mesocrystal and the graphene, and the compound of the rutile TiO2 mesocrystal and the grapheme is used for assembling lithium ion batteries. The method for the in-situ synthesis of the compound of the rutile TiO2 mesocrystal and the grapheme is simple in preparation, cost is low, energy consumption is low, repeatability is good, and the manufactured lithium ion batteries have high specific capacity and long-range cycling stability, show excellent multiplying power charge-discharge properties, and have wide commercial prospects.

Description

technical field [0001] The invention belongs to the field of electrode material preparation, in particular to an in-situ synthesis of rutile TiO 2 A method for mesogenic and graphene composites. Background technique [0002] Lithium-ion battery is a green, high-energy and environment-friendly battery that appeared in the 1990s. It has been widely used due to its outstanding advantages. At present, lithium-ion batteries and their key materials have become a technological and industrial focus of all countries in the world. They are also one of the energy sources that our government attaches great importance to development and utilization, and have been included in the national medium and long-term development plan. In particular, the development of lithium-ion power batteries suitable for electric vehicles (EV) and hybrid electric vehicles (HEV) has become the hottest and fastest-growing research field in the field of new energy in recent years. Now the commonly used negativ...

Claims

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Application Information

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IPC IPC(8): H01M4/587H01M4/48H01M10/0525H01M10/058
CPCY02E60/122H01M4/48H01M4/587H01M10/0525Y02E60/10Y02P70/50
Inventor 魏明灯蓝通斌
Owner FUZHOU UNIV
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