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Vermicular mesoporous carbon/Bi2O3 composite electrode material as well as preparation method and application thereof

A composite electrode and composite material technology, which is applied in the manufacture of hybrid/electric double-layer capacitors, circuits, capacitors, etc., can solve the problems of harsh conditions, troublesome synthesis process, etc., and achieve high specific energy, uniform distribution, and stable work. window effect

Inactive Publication Date: 2011-06-29
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the synthesis process of worm mesoporous carbon materials is relatively cumbersome, and the requirements for conditions are relatively strict. Therefore, worm mesoporous carbon materials with high specific surface area, high pore volume, and narrow pore size distribution are developed through simple processes to meet the development of industrial technology in recent years. has become a new research hotspot at home and abroad

Method used

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  • Vermicular mesoporous carbon/Bi2O3 composite electrode material as well as preparation method and application thereof
  • Vermicular mesoporous carbon/Bi2O3 composite electrode material as well as preparation method and application thereof
  • Vermicular mesoporous carbon/Bi2O3 composite electrode material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation of worm-like mesoporous carbon materials (WMC) by high-temperature calcination method:

[0031] (a) 1.82g Zn(NO 3 ) 2 ·6H 2 O was added to 35mL N, N-dimethylformamide, after stirring, 0.85g terephthalic acid was added to obtain a clear solution;

[0032] (b) Transfer the clarified solution into a 50mL low-temperature reaction kettle, keep the temperature at 100°C for 24h, cool to room temperature, centrifuge, and vacuum-dry at 100°C to obtain a white metal-organic coordination polymer (MOCP);

[0033] (c) Using MOCP as the precursor, adding 2 mL of glycerol as the carbon source, N 2 Under protection at 8°C min -1 The temperature was raised to 1000 ° C at a constant temperature for 8 hours, and then cooled to room temperature to obtain a worm-like mesoporous carbon material (WMC, as shown in the transmission electron microscope photo figure 1 As shown in (a), N 2 The adsorption-desorption curve is shown in figure 2 As shown in (a), the pore size d...

Embodiment 2

[0040] (1) Preparation of worm-like mesoporous carbon materials (WMC) by high-temperature calcination method:

[0041] (a) 1g Zn(NO 3 ) 2 ·6H 2 O was added to 15mL of N,N-dimethylformamide, and after stirring, 1g of terephthalic acid was added to obtain a clear solution;

[0042] (b) Transfer the clarified solution into a 50mL low-temperature reaction kettle, keep the temperature at 80°C for 24h, cool to room temperature, centrifuge, and vacuum-dry at 80°C to obtain a white metal-organic coordination polymer (MOCP);

[0043] (c) Using MOCP as precursor, adding 5mL glycerol as carbon source, N 2 Under protection at 10°C min -1 The temperature was raised to 850°C at a constant rate, kept at a constant temperature for 4 hours, and cooled to room temperature to obtain a worm-like mesoporous carbon material (WMC).

[0044] (2) Take the worm-like mesoporous carbon material obtained in step (1) and impregnate it in 0.1mol L -1 Stir in the bismuth nitrate solution for 2 hours, f...

Embodiment 3

[0050] (1) Preparation of worm-like mesoporous carbon materials (WMC) by high-temperature calcination method:

[0051] (a) 3g Zn(NO 3 ) 2 ·6H 2 O was added to 40mL of N,N-dimethylformamide, and after stirring, 2.5g of terephthalic acid was added to obtain a clear solution;

[0052] (b) Transfer the clarified solution into a 50mL low-temperature reaction kettle, keep the temperature at 120°C for 12h, cool to room temperature, centrifuge, and vacuum-dry at 90°C to obtain a white metal-organic coordination polymer (MOCP);

[0053] (c) Using MOCP as precursor, adding 4mL glycerol as carbon source, N 2 Under protection at 2°C min -1 The temperature was raised to 900°C at a constant rate, kept at a constant temperature for 10 hours, and cooled to room temperature to obtain a worm-like mesoporous carbon material (WMC).

[0054] (2) Take 0.1 g of the worm-like mesoporous carbon material obtained in step (1) and impregnate it in 0.1 mol L -1 Stir in the bismuth nitrate solution f...

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Abstract

The invention discloses a vermicular mesoporous carbon / Bi2O3 composite electrode material as well as a preparation method and application thereof. The method comprises the following steps of: (1) preparing a vermicular mesoporous carbon material by adopting a high-temperature calcination method; (2) adopting the vermicular mesoporous carbon material as a body material, soaking the body material into a bismuth nitrate solution with the concentration of 0.1-1mol.L<-1>, stirring, filtering and drying to obtain black powder; and (3) placing the black powder into a microwave oven to carry out microwave short-time high-energy radiation to obtain the vermicular mesoporous carbon / Bi2O3 composite material. The invention has rapid preparation process without complicated synthesizing equipment, and the synthesized carbon material has high specific surface area and contains rich functional groups on the surface. The obtained mesoporous carbon / Bi2O3 composite material has more uniform bismuth oxide distribution, high specific capacitance, good cyclical stability and high specific energy and stable working window in an alkaline KOH solution.

Description

technical field [0001] The invention belongs to electrode materials for supercapacitors, in particular to a worm-like mesoporous carbon / Bi 2 o 3 Composite electrode materials and their preparation methods and applications. Background technique [0002] Supercapacitor, also known as electrochemical capacitor, is a new type of energy storage device developed in the 1970s and 1980s between traditional capacitors and batteries. The supercapacitor combines the high specific energy of the battery and the high specific power of the traditional capacitor. It can be quickly charged and discharged, has a long service life, is easy to maintain, and is environmentally friendly. It is a new, efficient and practical energy storage device that can be used for storage equipment backup Power supplies, laser weapons, missile guidance system power supplies, and electric starting systems for various internal combustion engines with batteries have broad application prospects in various fields ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/058H01G11/86
Inventor 袁定胜陈景星夏南南刘应亮
Owner JINAN UNIVERSITY