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Graphitized porous carbon material, preparation method thereof, electrode and application thereof

A porous carbon material and graphitization technology, applied in the field of materials, can solve the problems of low efficiency of supercapacitors, limited electrode capacitance value, and insufficient specific surface area, etc., to achieve easy control of the preparation process, increase capacitance performance, and electron transmission path short effect

Inactive Publication Date: 2019-03-29
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a graphitized porous carbon material and its preparation method, electrode and application thereof, which are used to solve the problem that the specific surface area of ​​the existing carbon material is not large enough, which limits the capacitance value of the electrode, resulting in low benefit of the supercapacitor technical issues

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  • Graphitized porous carbon material, preparation method thereof, electrode and application thereof
  • Graphitized porous carbon material, preparation method thereof, electrode and application thereof
  • Graphitized porous carbon material, preparation method thereof, electrode and application thereof

Examples

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Embodiment 1

[0045] In this embodiment, the preparation of graphitized porous carbon is carried out first, including the following steps:

[0046] 1) Weigh 2g of D001 macroporous strongly acidic styrene-based anion exchange resin, add it to the nickel acetate solution, and use an ultrasonic cell pulverizer to grind at 1.5W cm -3, ultrasonically mixed at 20 kHz for 1 h, and then filtered and dried to obtain the first product.

[0047] 2) The first product is placed in a nitrogen atmosphere, and a tube furnace is used to perform pre-carbonization treatment for 1 hour to obtain a second product, and then the second product is fully ground for 30 minutes.

[0048] 3) The ground second product is placed in a mixed gas atmosphere of nitrogen and carbon dioxide (volume ratio: 4:1) for activation treatment, then washed with dilute hydrochloric acid and pure water, and dried to obtain graphitized porous carbon.

[0049] After that, in this example, the obtained graphitized porous carbon and PVDF w...

Embodiment 2

[0056] In this embodiment, the preparation of graphitized porous carbon is carried out first, and then the preparation of electrodes is carried out. The preparation of graphitized porous carbon is the same as in Example 1, but the concentration of nickel acetate solution is 0.15mol L -1 , the temperature of the pre-carbonization treatment is 500°C, the time of the pre-carbonization treatment is 1h, the temperature of the activation treatment is 800°C, 900°C or 1000°C, and the time of the activation treatment is 1h or 2h. The 100mVs of the electrode prepared by graphitizing porous carbon in this embodiment -1 The performance diagram of the sweep capacitor is shown in Figure 4 as shown, Figure 4 It shows that the performance of the electrode prepared by graphitized porous carbon in this example is good, and the performance of the electrode prepared by graphitized porous carbon is the best when the activation treatment temperature is 800° C. and the activation treatment time i...

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Abstract

The invention belongs to the technical field of materials and especially relates to a graphitized porous carbon material, a preparation method thereof, an electrode and an application thereof. The preparation method for the graphitized porous carbon material provided by the invention comprises the following steps: a) dissolving an ion exchange resin in an inorganic metal salt solution, and then drying, thereby acquiring a first product; b) placing the first product in a nitrogen and / or inert gas atmosphere and performing pre-carbonizing treatment, thereby acquiring a second product; c) placingthe second product in a mixed atmosphere of carbon dioxide and nitrogen and / or inert gas and performing activating treatment, and then cleaning, thereby acquiring the graphitized porous carbon material. A result proves that the graphitized porous carbon material has a porous microstructure, large specific surface area and huge application prospect. According to the invention, inorganic metal saltis taken as an etching agent of ion exchange resin and carbon dioxide is taken as an activating agent and a pore-forming agent for activating treatment, so that the large dosage of etching agent canbe avoided and the graphitized porous carbon material is green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a graphitized porous carbon material, a preparation method thereof, an electrode and an application thereof. Background technique [0002] Energy shortage and environmental pollution are two major problems in the world today. In order to solve the above problems, the development of renewable energy such as wind energy, solar energy, and tidal energy is an effective way. However, these energy sources have periodic and regional restrictions, which will cause waste of resources, so it is necessary to find a suitable energy storage device. Supercapacitor is a green, safe and recyclable energy storage device, which has high power density and can realize fast charging and fast discharging, which has attracted widespread attention. However, the performance of supercapacitors often largely depends on the performance of electrode materials, so it is urgent to develop an ele...

Claims

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Application Information

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IPC IPC(8): C01B32/205H01G11/24H01G11/32H01G11/44
CPCC01B32/205H01G11/24H01G11/32H01G11/44Y02E60/13
Inventor 肖祥王超钟国彬徐凯琪曾杰苏伟伍世嘉卢锡洪冯浩槟
Owner GUANGDONG POWER GRID CO LTD