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Hierarchical porous carbon electrode material, preparation method and application in flexible supercapacitor

A carbon electrode and multi-level pore technology, applied in the field of materials science, can solve the problems of small specific surface area, low capacity density, low specific capacitance, etc., and achieve the effects of high specific surface area, simple equipment and simple process steps.

Active Publication Date: 2021-06-18
LIAONING UNIVERSITY
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Problems solved by technology

[0005] Aiming at the problems of small specific surface area, low specific capacitance and low capacity density in existing activated carbon electrode materials, the purpose of the present invention is to provide a multi Porous Carbon Electrode Materials

Method used

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  • Hierarchical porous carbon electrode material, preparation method and application in flexible supercapacitor
  • Hierarchical porous carbon electrode material, preparation method and application in flexible supercapacitor
  • Hierarchical porous carbon electrode material, preparation method and application in flexible supercapacitor

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Embodiment 1

[0025] Embodiment 1 Hierarchical porous carbon electrode material

[0026] (1) C Zn(tbip)-S-800 preparation:

[0027] (1) Add 0.099g of zinc acetate, 0.074g of 5-tert-butyl-isophthalic acid, 0.2g of polyethylene glycol, 1.5mL of ethylene glycol and 6.5mL of water to a volume of 10mL of polytetrafluoroethylene Reactor, and stirred at room temperature for 0.5 hours. The reactor was sealed and placed in an oven. Heat the temperature of the oven from room temperature to 180°C with a heating rate of 4°C min -1 , and keep the temperature under this condition for 72 hours. Slowly cool to room temperature to obtain nanoscale brown rod-shaped crystals; wash with water and ethanol respectively, filter and dry in air, which is the precursor nanoscale metal-organic framework material Zn (tbip), and the yield is 70%.

[0028] (2) The precursor nanoscale metal-organic framework material Zn(tbip) was transferred to a porcelain boat, placed in a tube furnace, and argon was passed for 1 h...

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Abstract

The invention relates to a hierarchical porous carbon electrode material, a preparation method thereof and an application in a flexible supercapacitor. The hierarchical porous carbon electrode material is made of nanoscale metal organic framework material Zn (tbip) as a precursor, and is calcined at 800‑1000 ° C under an inert atmosphere. Compared with the prior art, the present invention adopts a one-step pyrolysis method to prepare the hierarchical porous carbon electrode material, the process steps are simple and easy to operate, and the prepared hierarchical porous carbon electrode material has a high specific surface area, a hierarchical porous structure, and It has excellent electrochemical performance, and its specific capacitance is as high as 360F g ‑1 , can be used in high stability, high power density power supply occasions.

Description

technical field [0001] The invention belongs to the field of materials science, and specifically relates to a hierarchical porous carbon material derived from a metal-organic framework material, a preparation method thereof, and an application as a flexible supercapacitor electrode material. Background technique [0002] In order to meet the needs of users, mobile electronic devices (such as digital cameras, notebook computers, and mobile phone power supplies) are developing towards light, small, flexible, and even foldable. Among many energy-related devices, supercapacitors are an important part. Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage device between batteries and traditional capacitors. Compared with traditional capacitors, it has the advantages of high power density, long charge and discharge cycle life, high Coulombic efficiency, high safety, and environmental friendliness. Application prospect. In recent years, all-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05H01G11/24H01G11/44
CPCC01B32/05H01G11/24H01G11/44Y02E60/13
Inventor 韩正波曹小漫
Owner LIAONING UNIVERSITY
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