A kind of carbon-based composite electrode material and preparation method thereof

A composite electrode and carbon-based technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of cumbersome and time-consuming synthesis steps, high cost, and difficulty in industrial production, and achieve a wide range of raw material selection and large pores. Capacity, improve the effect of utilization

Inactive Publication Date: 2018-10-30
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to solve many problems in the prior art, such as cumbersome and time-consuming synthesis steps of hierarchical porous carbon materials, high cost, and difficulty in industrial production, and develop a carbon-based composite electrode material, specifically a hierarchical porous carbon material Carbon-Graphene Composite Bulk Materials

Method used

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  • A kind of carbon-based composite electrode material and preparation method thereof
  • A kind of carbon-based composite electrode material and preparation method thereof
  • A kind of carbon-based composite electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A method for preparing a carbon-based composite electrode material, comprising the following steps:

[0061] 1) Preparation of oligomeric phenolic resin Resol

[0062] Dissolve 1.0g of phenol and 3.5mL of formaldehyde in 5mL of sodium hydroxide solution and stir at 70°C for 0.5h to obtain the oligomeric phenolic resin Resol;

[0063] The concentration of the sodium hydroxide solution is 0.5mol / L;

[0064] 2) Preparation of graphene oxide

[0065] 2.1) Under ice-water bath conditions, 150ml of concentrated sulfuric acid was added to a mixture of 2.5g of sodium nitrate and 1g of graphite, and stirred for 30min to obtain mixture A;

[0066] The concentration of the concentrated sulfuric acid is 95%;

[0067] 2.2) Add 15 g of potassium permanganate in portions to the mixture A obtained in step 2.1) and react for 12 hours to obtain a mixture B; control the reaction temperature not to exceed 20°C;

[0068] 2.3) Add 150ml of deionized water to the mixture B obtained in ste...

Embodiment 2

[0093] A method for preparing a carbon-based composite electrode material, comprising the following steps:

[0094]1) Preparation of oligomeric phenolic resin Resol

[0095] Dissolve 0.9g of phenol and 3.5mL of formaldehyde in 8mL of sodium hydroxide solution and stir at 70°C for 0.5h to obtain the oligomeric phenolic resin Resol;

[0096] The concentration of the sodium hydroxide solution is 0.3mol / L;

[0097] 2) Preparation of graphene oxide

[0098] 2.1) Under ice-water bath conditions, 150ml of concentrated sulfuric acid was added to a mixture of 2.5g of sodium nitrate and 1g of graphite, and stirred for 30min to obtain mixture A;

[0099] The concentration of the concentrated sulfuric acid is 96%;

[0100] 2.2) Add 15 g of potassium permanganate in portions to the mixture A obtained in step 2.1) and react for 12 hours to obtain a mixture B; control the reaction temperature not to exceed 20°C;

[0101] 2.3) Add 150ml of deionized water to the mixture B obtained in step...

Embodiment 3

[0115] A method for preparing a carbon-based composite electrode material, comprising the following steps:

[0116] 1) Preparation of oligomeric phenolic resin Resol

[0117] Dissolve 1.1g of phenol and 4.5mL of formaldehyde in 4mL of sodium hydroxide solution and stir at 65°C for 0.7h to obtain the oligomeric phenolic resin Resol;

[0118] The concentration of the sodium hydroxide solution is 0.6mol / L;

[0119] 2) Preparation of graphene oxide

[0120] 2.1) Under ice-water bath conditions, 150ml of concentrated sulfuric acid was added to a mixture of 2.5g of sodium nitrate and 1g of graphite, and stirred for 30min to obtain mixture A;

[0121] The concentration of the concentrated sulfuric acid is 97%;

[0122] 2.2) Add 15 g of potassium permanganate in portions to the mixture A obtained in step 2.1) and react for 12 hours to obtain a mixture B; control the reaction temperature not to exceed 20°C;

[0123] 2.3) Add 150ml of deionized water to the mixture B obtained in ste...

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Abstract

The invention discloses a carbon-based composite electrode material and a preparation method thereof. The hierarchical pore carbon-graphite composite bulk material is prepared by a hydrothermal method with oligo-phenolic resin Resol and graphene oxide as carbon source precursors and triblock copolymers P123 and F127 as dual templates. The obtained material has a microporous / mesoporous / macroporous hierarchical pore structure, a high specific surface area, and a large pore volume. The material exhibits high specific capacity, good rate capacity and excellent cycle stability when used as a supercapacitor electrode material. The preparation method disclosed by the invention has the advantages of simple and easy process, low cost and easiness for industrial production, and the obtained product has great application prospect in the field of super capacitors.

Description

technical field [0001] The invention relates to the field of preparation and application of new materials, in particular to a carbon-based composite electrode material and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of green energy storage device, which has the advantages of fast charging speed, high efficiency, long cycle life, wide temperature range, high safety, and no pollution to the environment. It is used in fuel cell vehicles, hybrid electric vehicles, Buses, solar energy system power storage devices, high-power fast charging power supplies, etc. have very broad application prospects. [0003] Electrode materials are the key factors determining the performance of supercapacitors. Porous carbon materials have the advantages of low price, good electrochemical stability, large specific surface area and pore volume, and are the preferred electrode materials for supercapacitors. [0004] However, porous carbon materials with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/32H01G11/24
CPCY02E60/13
Inventor 刘玉荣张进
Owner CHONGQING UNIV OF ARTS & SCI
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