Carbon-based electrode material, preparation method of carbon-based electrode material and energy storage device

An electrode material, carbon-based technology, used in capacitors, electrical components, battery electrodes, etc., can solve the problems of complex processes and complicated steps, and achieve the effects of simple steps, cheap and easily available raw materials, and long cycle life.

Inactive Publication Date: 2014-03-26
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, the preparation of carbon-based electrode materials mainly includes chemical vapor deposition, template method, and high-temperature pyrolysis. However, these methods are cumbersome and complicated.

Method used

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  • Carbon-based electrode material, preparation method of carbon-based electrode material and energy storage device
  • Carbon-based electrode material, preparation method of carbon-based electrode material and energy storage device
  • Carbon-based electrode material, preparation method of carbon-based electrode material and energy storage device

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preparation example Construction

[0043] The invention provides a method for preparing a carbon-based electrode material, comprising the following steps:

[0044] a) heat-treating the pine needles in an inert atmosphere to obtain the first carbon-based electrode material;

[0045] b) mixing the first carbon-based electrode material obtained in step a) with an alkaline substance to obtain a mixture;

[0046] c) chemically activating the mixture obtained in step b) under an inert atmosphere to obtain a second carbon-based electrode material.

[0047] In the invention, pine needles are used as raw materials, and the first carbon-based electrode material is obtained after heat treatment; the obtained first carbon-based electrode material is mixed with an alkaline substance and then chemically activated to obtain the second carbon-based electrode material. The method provided by the invention has rich sources, simple preparation process and easy control, and the obtained carbon-based electrode material has better ...

Embodiment 1

[0089] Wash the pine needles with water, then sonicate them for 10 minutes, then wash them with ethanol or acetone, then sonicate them for 10 minutes, and finally wash them with distilled water. Dry the obtained clean pine needles at 70°C for later use.

[0090] The above-mentioned dried pine needles were heated for 2 hours under the protection of nitrogen atmosphere, and the heating temperature was 500° C. to obtain the first carbon-based electrode material.

[0091] The present invention uses a scanning electron microscope to characterize the morphology of the obtained first carbon-based electrode material, and the results are as follows figure 1 as shown, figure 1 It is the SEM figure of the first carbon-based electrode material that the embodiment of the present invention 1 obtains, by figure 1 It can be seen that the first carbon-based electrode material obtained in this embodiment has a porous structure.

[0092] The present invention adopts automatic specific surface ...

Embodiment 2

[0094] The dried pine needles obtained in Example 1 were heated under the protection of nitrogen atmosphere for 3 hours, and the heating temperature was 600° C. to obtain the first carbon-based electrode material.

[0095] The present invention uses a scanning electron microscope to characterize the morphology of the obtained first carbon-based electrode material, and the results are as follows image 3 as shown, image 3 The SEM figure of the first carbon-based electrode material that is the embodiment of the present invention 2 obtains, by image 3 It can be seen that the first carbon-based electrode material obtained in this embodiment has a porous structure.

[0096] The present invention adopts automatic specific surface area and porous analyzer to characterize the specific surface area and pore size distribution of the first carbon-based electrode material obtained, and the results are as follows Figure 4 as shown, Figure 4 The BJH pore size distribution diagram and...

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Abstract

The invention provides a carbon-based electrode material, a preparation method of the carbon-based electrode material and an energy storage device. The preparation method of the carbon-based electrode material comprises the following steps: a) performing heat treatment on pine needles in an inert atmosphere to obtain a first carbon-based electrode material; b) mixing the first carbon-based electrode material obtained in the step a) with an alkaline substance to obtain a mixture; and c) chemically activating the mixture obtained in the step b) under an insert atmosphere to obtain a second carbon-based electrode material. According to the preparation method of the carbon-based electrode material, the pine needles are adopted as a raw material, so that the raw material is cheap and available; the first carbon-based electrode material can be obtained by performing heat treatment on the pine needles; the obtained first carbon-based material is mixed with the alkaline substance and then chemically activated to obtain the second carbon-based electrode material. The preparation method of the carbon-based electrode material is simple in step, easily-controllable in operation process, low in energy consumption and applicable to the needs of industrial production. The carbon-based electrode material can serve as an electrode of the energy storage device.

Description

technical field [0001] The invention relates to the technical field of energy storage materials, in particular to a carbon-based electrode material, a preparation method thereof and an application in energy storage devices. Background technique [0002] With the depletion of oil resources and the deterioration of the environment, people are paying more and more attention to the development and utilization of green energy. Wind energy, solar energy, and water energy are representatives of these new renewable energy sources. However, the output of these energy sources is strongly dependent on natural conditions and does not match the energy demand. Therefore, an energy storage system is required. When energy is surplus, the energy storage system stores it and releases it when needed. Among various energy storage systems, electrical energy storage systems play a vital role, such as batteries and electrochemical capacitors, which have become indispensable energy storage devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583H01M4/133H01G9/042
CPCY02E60/122H01G11/32H01M4/583H01M10/0525Y02E60/10
Inventor 王宏宇郑程齐力
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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