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Method for preparing high-pressure water-based supercapacitor electrode material by using grapefruit skin

A technology of supercapacitors and electrode materials, applied in hybrid capacitor electrodes, chemical instruments and methods, inorganic chemistry, etc., to achieve the effects of excellent double-layer capacitor characteristics and electrochemical performance, long cycle life, and broad application prospects

Inactive Publication Date: 2019-09-06
HUNAN CITY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are reports on the preparation of biomass activated carbon by a series of physical or chemical methods using pomelo peel as raw material.

Method used

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  • Method for preparing high-pressure water-based supercapacitor electrode material by using grapefruit skin
  • Method for preparing high-pressure water-based supercapacitor electrode material by using grapefruit skin
  • Method for preparing high-pressure water-based supercapacitor electrode material by using grapefruit skin

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Embodiment 1

[0027] The invention provides a kind of method that utilizes pomelo peel to prepare the electrode material of high pressure water system supercapacitor, comprises the following steps:

[0028] A. Retrieving material: use domestic waste grapefruit peel as raw material, use potassium hydroxide as activator, and provide potassium source for carbon material at the same time, in which distilled water is used as solvent;

[0029] B. Granulation: Rinse the pomelo peel with clean water under high pressure. After washing the grapefruit peel three times, use a hot air blower to air-dry the grapefruit peel, and use a blast drying box to dry. The air-drying temperature is kept between 70°C and the air-drying time is Keep it for 24 hours, then place the air-dried pomelo peel in the pulverizer for stirring and crushing, the motor speed of the pulverizer is 1000n / min, make the pomelo peel into granules, and use a 200-mesh filter to grind the pulverized material. Filtration to remove the powd...

Embodiment 2

[0035] The invention provides a kind of method that utilizes pomelo peel to prepare the electrode material of high pressure water system supercapacitor, comprises the following steps:

[0036] A. Retrieving material: use domestic waste grapefruit peel as raw material, use potassium hydroxide as activator, and provide potassium source for carbon material at the same time, in which distilled water is used as solvent;

[0037] B. Granulation: Rinse the pomelo peel with clean water under high pressure. After washing the grapefruit peel three times, use a hot air blower to air-dry the grapefruit peel, and use a blast drying box to dry. The air-drying temperature is kept between 70°C and the air-drying time is Keep it for 24 hours, then place the air-dried pomelo peel in the pulverizer for stirring and crushing, the motor speed of the pulverizer is 1000n / min, make the pomelo peel into granules, and use a 200-mesh filter to grind the pulverized material. Filtration to remove the powd...

Embodiment 3

[0043] The invention provides a kind of method that utilizes pomelo peel to prepare the electrode material of high pressure water system supercapacitor, comprises the following steps:

[0044] A. Retrieving material: use domestic waste grapefruit peel as raw material, use potassium hydroxide as activator, and provide potassium source for carbon material at the same time, in which distilled water is used as solvent;

[0045]B. Granulation: Rinse the pomelo peel with clean water under high pressure. After washing the grapefruit peel three times, use a hot air blower to air-dry the grapefruit peel, and use a blast drying box to dry. The air-drying temperature is kept between 80°C and the air-drying time Keep it for 24 hours, then place the air-dried pomelo peel in the pulverizer for stirring and crushing, the motor speed of the pulverizer is 1000n / min, make the pomelo peel into granules, and use a 200-mesh filter to grind the pulverized material. Filtration to remove the powder i...

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Abstract

The invention discloses a method for preparing a high-pressure water-based supercapacitor electrode material by using grapefruit skin, and particularly relates to the technical field of novel energy materials, wherein the method comprises: material taking, particle preparing, mixing and block forming, carbonizing treatment, and carbonized product treatment, wherein the material taking uses domestic waste grapefruit skin as a raw material, uses potassium hydroxide as an activator, provides the potassium source for the carbon material, and uses distilled water as the solvent. According to the present invention, the preparation method is simple, reliable and environmentally friendly; and the prepared porous biomass carbon material has excellent double-layer capacitor characteristics and excellent electrochemical performance, further has long cycle life, is an ideal electrode material, has broad application prospects in the field of supercapacitors, and is especially suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of new energy materials, and more specifically, the invention relates to a method for preparing electrode materials for high-voltage water-based supercapacitors by using pomelo peels. Background technique [0002] The continuous consumption of fossil energy has not only caused an energy crisis, but also brought a series of environmental problems. Therefore, sustainable clean energy sources such as solar energy and wind energy are gradually being developed and utilized. With the development of these clean energy sources, efficient energy storage devices have been gradually developed and upgraded. As a new type of green energy equipment, supercapacitors are widely used in hybrid electric vehicles and portable electronic products. As the main component of energy storage devices, electrode materials play a decisive role in the electrochemical performance of energy storage devices. Carbon-based materials are wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348C01B32/324H01G11/24H01G11/34H01G11/44
CPCC01B32/324C01B32/348H01G11/24H01G11/34H01G11/44Y02E60/13
Inventor 贺国文李平义李锦沙立婷吴丹
Owner HUNAN CITY UNIV