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Metal organic framework compound/graphene electrode material and preparation method and application thereof

A metal-organic framework and graphene electrode technology, which is applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, reduction-oxidation hybrid capacitors, etc., can solve the problems of inability to obtain electrochemical performance supercapacitor equipment, poor cycle stability, etc. Achieve good cycle stability and strong variability

Active Publication Date: 2021-01-08
华百(新兴)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the structural changes caused by chemical changes, their cycle stability is relatively poor, and some materials with good thermal and mechanical stability are usually required as substrates (DOI: 10.1016 / j.rser.2015.12.249)
Therefore, using a single type of material as the electrode material of a supercapacitor cannot obtain a supercapacitor device with excellent electrochemical performance in all aspects.

Method used

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  • Metal organic framework compound/graphene electrode material and preparation method and application thereof
  • Metal organic framework compound/graphene electrode material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0058] (1) Preparation of graphene oxide-oxazoline: Disperse 50 mg of graphene oxide in 25 mL of anhydrous N,N-dimethylformamide, add 10 mg of 2-vinyl-2-oxazole after ultrasonic dispersion for 0.5 hours phenoline, fed with nitrogen, and reacted at 100°C for 12 hours under the protection of nitrogen. After the reaction, the suspension was suction-filtered and washed with N,N-dimethylformamide, absolute ethanol and deionized water respectively. After washing, The sample was dried in a vacuum oven at 60°C for 12 hours to obtain graphene oxide-oxazoline.

[0059] (2) Preparation of graphene oxide-polyoxazoline: ultrasonically disperse 50mg graphene oxide-oxazoline in 25mL anhydrous N,N-dimethylformamide for 0.5 hours, then add 50mg monomer 2-ethylene Base-2-oxazoline, add 5 mg of azobisisobutyronitrile to initiate polymerization, pass through nitrogen, and react at 40°C for 8 hours under the protection of nitrogen. After washing with dimethylformamide, absolute ethanol and deioni...

Embodiment 2

[0065] (1) Preparation of graphene oxide-oxazoline: Disperse 50 mg of graphene oxide in 25 mL of anhydrous N,N-dimethylformamide, add 16.7 mg of 2-vinyl-2-oxazoline after ultrasonic dispersion for 1 hour Azoline, feed nitrogen, and react at 125°C for 18 hours under the protection of nitrogen. After the reaction, the suspension is suction-filtered and washed with N,N-dimethylformamide, absolute ethanol and deionized water respectively. The sample was then dried in a vacuum oven at 60°C for 12 hours to obtain graphene oxide-oxazoline.

[0066] (2) Preparation of graphene oxide-polyoxazoline: ultrasonically disperse 50mg graphene oxide-oxazoline in 25mL anhydrous N,N-dimethylformamide for 1 hour, then add 150mg monomer 2-ethylene Base-2-oxazoline, add 30mg of azobisisobutyronitrile to initiate polymerization, pass through nitrogen, react at 60°C under nitrogen protection for 8 hours, after the reaction, filter the suspension with N, N- After washing with dimethylformamide, absol...

Embodiment 3

[0072] (1) Preparation of graphene oxide-oxazoline: Disperse 50 mg of graphene oxide in 25 mL of anhydrous N,N-dimethylformamide, add 50 mg of 2-vinyl-2-oxazole after ultrasonic dispersion for 1 hour phenoline, fed with nitrogen, and reacted at 120°C for 16 hours under the protection of nitrogen. After the reaction, the suspension was suction-filtered and washed with N,N-dimethylformamide, absolute ethanol and deionized water respectively. After washing, The sample was dried in a vacuum oven at 60°C for 12 hours to obtain graphene oxide-oxazoline.

[0073] (2) Preparation of graphene oxide-polyoxazoline: ultrasonically disperse 50mg graphene oxide-oxazoline in 25mL anhydrous N,N-dimethylformamide for 1 hour, then add 100mg monomer 2-ethylene Base-2-oxazoline, add 20mg of azobisisobutyronitrile to initiate polymerization, blow nitrogen, react at 60°C under nitrogen protection for 10 hours, after the reaction, filter the suspension with N, N- After washing with dimethylformamid...

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Abstract

The invention discloses a metal organic framework compound / graphene electrode material and a preparation method and application thereof, and belongs to the technical field of synthesis of supercapacitor electrode materials. The method mainly comprises the following steps: performing grafting reaction on graphene oxide and an oxazoline derivative, initiating free radical polymerization of the oxazoline derivative to obtain graphene oxide polyoxazoline, reacting graphene oxide polyoxazoline with pyridine carboxylic acid substances, and reacting graphene oxide polyoxazoline with aliphatic dibasicacid to crosslink a polyoxazoline molecular chain, thereby obtaining the graphene oxide / aliphatic dibasic acid composite material; and then performing coordination with transition metal ions to obtain the metal organic framework compound / graphene supercapacitor electrode material. The obtained electrode material is excellent in performance, stable in structure, high in variability, green and non-toxic, the specific capacitance of the material can reach 720.7 F g<-1>, the charge-discharge cycle stability is excellent, and the specific capacitance retention rate after 1000 cycles reaches 95% orabove.

Description

technical field [0001] The invention belongs to the field of supercapacitor electrode material preparation, and in particular relates to a metal organic framework compound / graphene electrode material, a preparation method and an application. Background technique [0002] In today's era, the problems of climate change, environmental pollution and energy crisis caused by the rapid consumption of fossil fuels are becoming more and more serious. The source of solving this problem lies in finding green and renewable energy alternatives and developing corresponding energy storage technologies. As a new generation of energy storage devices, supercapacitors have attracted widespread attention. They have many advantages such as high power density, fast charge and discharge speed, and high cycle stability. They have been used in new energy vehicles, portable electronic equipment and other industries. And development. Therefore, further research and development of supercapacitor devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/26H01G11/32H01G11/30H01G11/02
CPCH01G11/02H01G11/24H01G11/26H01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 朱亚明黄皓浩
Owner 华百(新兴)科技有限公司