Three-dimensional hollow carbon foam electrode materials, preparation method of three-dimensional hollow carbon foam electrode materials and application of three-dimensional hollow carbon foam electrode materials

A three-dimensional hollow electrode material technology, applied in the field of electrochemical energy storage, can solve the problems of small specific surface area and pore volume, cumbersome synthesis steps, uneven pore size distribution, etc., and meet the requirements of mild reaction conditions, high specific surface area, and high-efficiency reaction conditions Effect

Inactive Publication Date: 2017-10-20
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a carbon electrode material with a multi-scale pore structure and its preparation method and application, so as to solve the problem of cumbersome synthesis steps, long time-consuming, high toxicity of raw materials, and The problems of small specific surface area and pore volume and uneven pore size distribution greatly reduce the cost of preparing multi-scale pore structure carbon materials. At the same time, the porous carbon materials with different scale pore structures prepared by this method can significantly improve Electrochemical performance, promoting the large-scale application and commercialization of multi-scale porous carbon materials

Method used

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  • Three-dimensional hollow carbon foam electrode materials, preparation method of three-dimensional hollow carbon foam electrode materials and application of three-dimensional hollow carbon foam electrode materials
  • Three-dimensional hollow carbon foam electrode materials, preparation method of three-dimensional hollow carbon foam electrode materials and application of three-dimensional hollow carbon foam electrode materials
  • Three-dimensional hollow carbon foam electrode materials, preparation method of three-dimensional hollow carbon foam electrode materials and application of three-dimensional hollow carbon foam electrode materials

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Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a preparation method of a three-dimensional hollow carbon foam electrode material with a multi-scale pore structure, the preparation process includes the following steps:

[0044] 1) Preparation of the reactant: mix 11.8996 g of zinc nitrate and 12.6084 g of citric acid (molar ratio of 1:1.5), add deionized water, stir well to make it completely dissolved.

[0045] 2) Place the solution obtained in step 1) on an electric furnace, and heat until the solution boils until a yellow viscous gel-like product is obtained.

[0046] 3) The viscous gel-like product obtained in step 2) is placed in a muffle furnace and annealed at 400° C. The annealing time lasts for 2 hours to obtain an off-white solid product with a multi-scale pore structure.

[0047] 4) Place the product obtained in step 3) in a tube furnace, and use nitrogen as a carrier gas to load ethanol into the tube furnace at a uniform speed. The furnace temperature is maintained at 500°C to carry out ...

Embodiment 2

[0051] A preparation method of a three-dimensional hollow carbon foam electrode material with a multi-scale pore structure. The preparation process includes the following steps:

[0052] 1) Preparation of reactant: mix zinc nitrate and citric acid in a molar ratio of 1:2, add deionized water, and stir thoroughly to make it completely dissolved.

[0053] 2) Place the solution obtained in step 1) on an electric furnace, and heat until the solution boils until a yellow viscous gel-like product is obtained.

[0054] 3) The viscous gel-like product obtained in step 2) is placed in a muffle furnace and annealed at 400° C. The annealing time lasts for 2 hours to obtain an off-white solid product with a multi-scale pore structure.

[0055] 4) Place the product obtained in step 3) in a tube furnace, and use nitrogen as a carrier gas to load ethanol into the tube furnace at a uniform speed. The furnace temperature is maintained at 500°C to carry out the ethanol catalytic decomposition reaction. ...

Embodiment 3

[0061] A preparation method of a three-dimensional hollow carbon foam electrode material with a multi-scale pore structure. The preparation process includes the following steps:

[0062] 1) Preparation of reactant: mix zinc nitrate and sucrose in a molar ratio of 1:1.5, add deionized water, and stir thoroughly to make it completely dissolved.

[0063] 2) Place the solution obtained in step 1) on an electric furnace, and heat until the solution boils until a yellow viscous gel-like product is obtained.

[0064] 3) The viscous gel-like product obtained in step 2) is placed in a muffle furnace and annealed at 400° C. The annealing time lasts for 2 hours to obtain an off-white solid product with a multi-scale pore structure.

[0065] 4) Place the product obtained in step 3) in a tube furnace, and use nitrogen as a carrier gas to load ethanol into the tube furnace at a constant rate. The furnace temperature is maintained at 500 to carry out the ethanol catalytic decomposition reaction. Afte...

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Abstract

The present invention discloses a three-dimensional hollow carbon foam electrode materials, a preparation method of the three-dimensional hollow carbon foam electrode materials and an application of the three-dimensional hollow carbon foam electrode materials. The method concretely comprises the following steps: mixing zinc nitrate, fuel and deionized water to perform full stirring and dissolution, putting the mixed solution on an electric furnace for heating until viscidity cementing products are obtained, the products are arranged in a muffle furnace for annealing to obtain zinc oxide template materials with multi-stage holes, and preparing charcoal electrode materials with multistage apertures through adoption of a template method. Compared to the prior art, the reaction materials are wide in source, low in cost and environmentally friendly, the synthesis steps are simple, the raw materials is nontoxic and safe and mild in reaction condition, and the method for removal of temperature materials is unique so as to fit large-size production and commercialization application. The prepared multi-stage hole carbon materials have multistage aperture structures having micropores, mesoporouses and macroporouses, large in specific surface area, have excellent charge and discharge multiplying power characteristics and cycle stability in an application and can satisfy the application requirement of an electrochemistry power storage device.

Description

Technical field [0001] The invention relates to the technical field of electrochemical energy storage, and more specifically to a three-dimensional hollow carbon foam electrode material with a multi-scale pore structure, and a preparation method and application thereof. Background technique [0002] In order to solve the increasingly scarce energy problem and the increasingly serious environmental pollution problem, the development and utilization of new energy has become a hot research topic. In the research field of new energy technology, electrochemical energy storage devices have many advantages, such as easy to use, reliable performance, easy to carry, capacity, current and voltage can be combined arbitrarily in a considerable range, and no pollution to the environment. Favor of scientific researchers. However, to promote the wide application of electrochemical energy storage devices, more excellent energy storage materials must be developed to meet various needs in use. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/32H01G11/86
CPCY02E60/13H01G11/86H01G11/24H01G11/32
Inventor 张冠华汪博文段辉高张维刚
Owner HUNAN UNIV
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