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Ordered carbon-based composite electrode material and preparation method thereof

A composite electrode and ordered carbon technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, can solve the problems of high cost, low efficiency and complicated methods, and achieves convenient operation, high efficiency and simple reaction control. Effect

Inactive Publication Date: 2019-02-22
NANTONG TEXTILE & SILK IND TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrode materials are the key to determining the performance of supercapacitors. However, in the prior art, the methods for preparing the above electrode materials are complex, costly, and inefficient

Method used

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  • Ordered carbon-based composite electrode material and preparation method thereof
  • Ordered carbon-based composite electrode material and preparation method thereof
  • Ordered carbon-based composite electrode material and preparation method thereof

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preparation example Construction

[0032] See figure 1 , a method for preparing an ordered carbon-based composite electrode material, comprising the following steps:

[0033] S1. Provide oriented composite conductive nanofiber film;

[0034] S2. Dry the oriented composite conductive nanofiber film for 24 hours, then raise the temperature to 250-350°C at a heating rate of 1-5°C / min for pre-oxidation, preferably at 2°C / min Raise the temperature to 280°C at the heating rate for pre-oxidation, and keep it at 280°C for 1 hour;

[0035] S3. Carbonize the pre-oxidized fiber membrane at a rate of 1-5°C / min to 1000-1200°C in a protective atmosphere to obtain the ordered carbon-based composite electrode material, preferably, In a high-purity nitrogen atmosphere, the temperature was raised to 1100 °C at a rate of 2 °C / min for carbonization, and kept at 1100 °C for 1 h.

[0036] In the preparation method, the oriented composite conductive nanofiber film is oriented carbon nanotube / polyacrylonitrile (SWNTs / PAN) composite...

Embodiment 1

[0039] The oriented porous graphene / polyacrylonitrile (Gr / PAN) composite conductive nanofiber membrane prepared by electrospinning was dried at room temperature for 24 h in an electric constant temperature drying oven, then taken out and placed in a muffle furnace at 2 °C / The heating rate of min was increased to 280°C for pre-oxidation, and the temperature was kept at 280°C for 1h. Then transfer to a tube furnace, in a high-purity nitrogen atmosphere, heat up to 1100° at a heating rate of 2°C / min for carbonization, and keep at 1100° for 1 hour to obtain an ordered carbon nanofiber / composite carbon nanofiber electrode Material. See Figures 2a to 2c , the figure shows the nanofibers obtained after carbonization treatment. It can be seen from the figure that the prepared C-Gr / PAN nanofiber electrode material has a high degree of orientation.

[0040] See image 3 , the Gr / PAN composite conductive nanofiber membrane of the present embodiment adopts an electrospinning device a...

Embodiment 2

[0046] Oriented magnetic nanometer ferroferric oxide / graphene / polyacrylonitrile (Fe 3 o 4 / Gr / PAN) composite conductive nanofiber membrane, placed in an electric constant temperature drying oven and dried at room temperature for 24 hours, taken out and placed in a muffle furnace to pre-oxidize at 280°C at a heating rate of 2°C / min, and then heated at 280°C Keep warm for 1h. Then transfer to a tube furnace, in a high-purity nitrogen atmosphere, heat up to 1100° at a heating rate of 2°C / min for carbonization, and keep at 1100° for 1 hour to obtain an ordered carbon nanofiber / composite carbon nanofiber electrode Material. See Figures 6a to 6c , the figure shows the nanofibers obtained after carbonization treatment. It can be seen from the figure that the prepared C-Fe 3 o 4 / Gr / PAN nanofiber electrode material has a high degree of orientation.

[0047] See Figure 7 , the Fe of this example 3 o 4 The / Gr / PAN composite conductive nanofiber membrane adopts the electrospin...

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Abstract

The invention relates to an ordered carbon-based composite electrode material and a preparation method thereof. The method comprises the following steps: S1. providing an oriented composite conductivenanofiber membrane; S2. drying the oriented composite conductive nanofiber membrane, and then heating to 250-350 DEG C at a heating rate of 1-5 DEGC / min for performing pre-oxidation; and S3. heatingthe pre-oxidized fiber membrane to the temperature of 1000-1200 DEG C at the heating rate of 1-5 DEGC / min to carry out carbonization to obtain the ordered carbon-based composite electrode material. The preparation method has the advantages of simple operation and high efficiency, can obtain the ordered carbon-based composite electrode material with excellent physical and chemical properties at a low cost by preparation, and meets industrial needs.

Description

technical field [0001] The invention relates to an ordered carbon-based composite electrode material and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] The rapid growth of global energy consumption and the destruction of the environment by traditional fossil energy have brought serious challenges to human health, energy security, and the global environment. Therefore, the development of green and renewable energy conversion and storage devices has become an important issue before human beings. As a new type of green energy storage device, supercapacitors have the advantages of high specific energy of batteries and high specific power of traditional physical capacitors. Sexual electronic products and many other fields have huge application value and market potential, play an irreplaceable role in batteries and traditional capacitors, and are widely concerned by countries all over the world. [0003] Single-walled car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/34H01G11/32H01G11/36H01G11/86
CPCH01G11/32H01G11/34H01G11/36H01G11/86Y02E60/13
Inventor 徐岚方月宋岩华
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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