Modified zinc oxide/frame structure carbon composite material as well as preparation method and application thereof

A carbon composite material and frame structure technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as difficult to meet the needs of high energy storage density, low energy density, etc., and achieve simple methods and increase energy Density, the effect of enriching the three-dimensional pore structure

Inactive Publication Date: 2020-12-11
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem facing supercapacitors at present is that compared with secondary batteries such as lithium-ion, supercapacitors are difficult to meet the needs of various electrical devices for high energy storage density due to their low energy density.

Method used

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  • Modified zinc oxide/frame structure carbon composite material as well as preparation method and application thereof
  • Modified zinc oxide/frame structure carbon composite material as well as preparation method and application thereof
  • Modified zinc oxide/frame structure carbon composite material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The preparation process of the present invention is as follows:

[0057] 1. Preparation of nanospherical nickel-doped metal porous organic framework (Ni-MOF)

[0058] 0.15g of nickel nitrate and 0.04g of terephthalic acid were dissolved in 25mL of N,N-dimethylformamide (DMF) and 8mL of ethylene glycol, and the mixed solution was stirred at room temperature for 30 minutes to obtain a green transparent solution, which was placed in a stainless steel Put it in an autoclave and screw it tightly, and react in a blast dryer at 130° C. for 4 hours. After naturally cooling to room temperature, the reaction solution was centrifuged in a high-speed centrifuge at 8,000 rpm for 5 minutes, washed with ethanol and DMF three times to obtain a wet sample, and finally dried overnight at 70°C in a drying oven to obtain a dry Ni-MOF sample.

[0059] 2. Preparation of precursor zinc-nickel bimetallic porous organic framework (Zn / Ni-MOF)

[0060] Weigh 60 mg of synthesized Ni-MOF and 0.5 ...

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Abstract

The invention provides a modified zinc oxide / frame structure carbon composite material and a preparation method and an application thereof. The composite material is composed of zinc oxide, nickel oxide and a three-dimensional porous structure carbon material. The zinc carbide / nickel bimetallic organic framework material MOF is utilized to implement uniform dispersion of zinc oxide / nickel oxide inthe three-dimensional structure carbon material. The material is applied to the technical field of supercapacitor electrode materials, the current density is 1-20 A / g, and the specific capacitance reaches 807-508 F / g. By utilizing the three-dimensional pore channel structure provided by the metal organic framework material, the structural stability and conductivity of the composite material are improved, electrochemical active sites are increased, and the composite material has a wide application prospect in the field of supercapacitors.

Description

【Technical field】 [0001] The invention relates to the technical field of supercapacitor electrode materials, in particular to a modified zinc oxide / frame structure carbon composite material and its preparation method and application. 【Background technique】 [0002] In recent years, with the increase of population and the lack of resources, there has been an unprecedented energy crisis, and the search for a clean and efficient energy has become a top priority for the world. Energy storage and conversion devices represented by supercapacitors are developing rapidly. [0003] Supercapacitors have received extensive scientific research attention due to their high power density, fast charge and discharge capabilities, ultra-long cycle stability, wide temperature application range, and no pollution to the environment. The main problem facing supercapacitors at present is that compared with secondary batteries such as lithium ions, supercapacitors are difficult to meet the needs o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/46H01G11/86
CPCH01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 万初斌唐安春巨新
Owner UNIV OF SCI & TECH BEIJING
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