Preparation method of nickel oxide/carbon sphere composite material

A technology of composite materials and carbon spheres, applied in nanotechnology for materials and surface science, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problems of unsatisfactory actual performance, low working voltage, and poor conductivity and other issues, to achieve high specific capacitance value, improve conductivity, and good electrochemical performance

Inactive Publication Date: 2015-09-09
YANGZHOU UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its low working voltage and poor conductivity, the actual performance is not ideal

Method used

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  • Preparation method of nickel oxide/carbon sphere composite material
  • Preparation method of nickel oxide/carbon sphere composite material
  • Preparation method of nickel oxide/carbon sphere composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Alkali treatment of ordered mesoporous carbon spheres: Add 0.1 g of mesoporous carbon spheres into a round-bottomed flask filled with 50 mL of 6M NaOH solution, stir on a magnetic stirrer for 10 minutes, and then ultrasonically disperse for 20 minutes to make The carbon spheres are uniformly dispersed in the solution. Magnetic stirring and reflux at 150°C for 24 hours, then naturally cool to room temperature; then the reaction system was centrifuged to obtain a precipitate, and then the obtained precipitate was centrifugally washed several times with deionized water and ethanol as the washing liquid, and then the obtained precipitate was vacuum-washed Dry to obtain alkali-treated carbon pellets.

[0035] Carrier carbon pellets such as figure 1 shown. From figure 1 It can be seen that the ordered mesoporous carbon spheres present uniform nano-spherical morphology, regular and ordered pore structure, and good monodispersity.

[0036] 2. Preparation of nickel hydrox...

Embodiment 2

[0041] 1. Alkali treatment of ordered mesoporous carbon spheres: Add 0.1 g of mesoporous carbon spheres into a round-bottomed flask filled with 50 mL of 6 M NaOH solution, stir on a magnetic stirrer for 10 minutes, and then ultrasonically disperse for 20 minutes. The carbon pellets are evenly dispersed in the solution. Magnetic stirring and reflux at 150°C for 24 hours, and then naturally cool to room temperature; then the reaction system was centrifuged to obtain a precipitate, and then deionized water and ethanol were used as washing liquids for centrifugal washing several times, and the obtained precipitate was vacuum-dried to obtain alkali treatment carbon pellets.

[0042] Carrier carbon pellets such as figure 1 shown. From figure 1 It can be seen that the ordered mesoporous carbon spheres present uniform nano-spherical morphology, regular and ordered pore structure, and good monodispersity.

[0043] 2. Preparation of nickel hydroxide / carbon pellet composite material ...

Embodiment 3

[0048] 1. Alkali treatment of ordered mesoporous carbon spheres: Add 0.1 g of mesoporous carbon spheres into a round-bottomed flask filled with 50 mL of 6M NaOH solution, stir on a magnetic stirrer for 10 minutes, and then ultrasonically disperse for 20 minutes to make The carbon spheres are uniformly dispersed in the solution. Magnetic stirring and reflux at 150°C for 24 hours, and then naturally cool to room temperature; then the reaction system was centrifuged to obtain a precipitate, and then deionized water and ethanol were used as washing liquids for centrifugal washing several times, and the obtained precipitate was vacuum-dried to obtain alkali treatment carbon pellets.

[0049] Carrier carbon pellets such as figure 1 shown. From figure 1 It can be seen that the ordered mesoporous carbon spheres present uniform nano-spherical morphology, regular and ordered pore structure, and good monodispersity.

[0050] 2. Preparation of nickel hydroxide / carbon pellet composite ...

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Abstract

A preparation method of a nickel oxide / carbon sphere composite material relates to the technical field of nano-material production. Backflow processing is carried out on ordered meso-pore carbon spheres, as carriers, in a NaOH solution, and a nickel hydroxide / carbon sphere precursor material is synthesized via hydrolysis of metal ions. The precursor is calcined in the atmosphere of nitrogen, nickel hydroxide is deposited to nickel oxide, and finally the nickel oxide / carbon sphere composite material is obtained. The preparation method provided by the invention is simple in technology and low in cost, and the prepared nickel oxide / carbon sphere composite material has good prospects in the field of super capacitors.

Description

technical field [0001] The invention relates to the technical field of synthesis of nanomaterials, in particular to a method for preparing a mesoporous carbon-based nickel oxide composite material. Background technique [0002] Mesoporous carbon materials are widely used as electrode materials for supercapacitors and batteries due to their regular and ordered pore structure, large pore volume, and good electrical conductivity. However, it has a major disadvantage as an electrode material for supercapacitors—low energy density. How to increase its energy density has become one of the hotspots of research. [0003] According to the energy formula E=1 / 2CV 2 It can be seen that improving the capacitive performance of the electrode material can effectively increase its energy density. Nickel oxide has attracted great attention as a pseudocapacitive material due to its good electrochemical redox activity, high theoretical specific capacitance, and low cost. However, due to its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/42H01G11/24B82Y30/00B82Y40/00
CPCY02E60/13H01G11/46B82Y30/00B82Y40/00H01G11/24H01G11/42H01G11/86
Inventor 范磊闫广超郭荣
Owner YANGZHOU UNIV
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