A method for preparing a high specific capacity nanocomposite material by using a dual template

A nanocomposite material, high specific capacity technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the problems of low specific capacitance of composites, complex process equipment, harsh reaction conditions, etc. , to achieve the effect of good rate characteristics and cycle stability, reliable preparation principle and low production cost

Active Publication Date: 2019-01-18
QINGDAO UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing synthesis technology, and propose a method for preparing a three-dimensional porous structure nitrogen-doped carbon / nickel / nickel oxide nanocomposite material using a double template to solve the problem of complex process equipment, harsh reaction conditions, and product structure. Simple, low specific capacitance of the composite is not conducive to the application of materials, and it can be easily and efficiently prepared composite electrode materials for supercapacitors

Method used

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  • A method for preparing a high specific capacity nanocomposite material by using a dual template
  • A method for preparing a high specific capacity nanocomposite material by using a dual template
  • A method for preparing a high specific capacity nanocomposite material by using a dual template

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Embodiment 1

[0030] Take 30mL polyacrylamide mother liquor (5wt%), add 45mL deionized water and dilute to form a uniform solution with a concentration of 2%, add dropwise 10.0g F127-resole phenolic resin mixture aqueous solution (mass concentration is 6.84%) under stirring conditions, Stir well. Add 2.67g NiCl to the solution 2 ·6H 2 O, stir well, the nickel ion concentration in the solution is 150mmol / L; Add 2.49g NaCl in the solution, stir well, the sodium chloride concentration in the solution is 0.5mol / L; Finally, in the polymer solution, add dropwise 300 μ L hydrochloric acid ( 3mol / L) and stirred evenly, the above solution was transferred to a polytetrafluoroethylene-lined autoclave, and hydrothermally reacted at 130°C for 15h to obtain a cross-linked polyacrylamide / nickel chloride / sodium chloride hydrogel. The gel was quickly frozen with liquid nitrogen, and dried in a freeze dryer for 24 hours (temperature -50°C, vacuum degree 8 Pa) to obtain a cross-linked polyacrylamide / nickel ...

Embodiment 2

[0032] Take 30mL polyacrylamide mother liquor (5wt%), add 45mL deionized water and dilute to form a uniform solution with a concentration of 2%, add dropwise 10.0g F127-resole phenolic resin mixture aqueous solution (mass concentration is 6.84%) under stirring conditions, Stir well. Add 2.67g NiCl to the solution 2 ·6H 2 O, stir evenly, the nickel ion concentration in the solution is 150mmol / L; Add 4.98g NaCl in the solution, stir well, the sodium chloride concentration in the solution is 1.0mol / L; Finally, in the polymer solution, drip 300 μ L hydrochloric acid ( 3mol / L) and stirred evenly, the above solution was transferred to a polytetrafluoroethylene-lined autoclave, and hydrothermally reacted at 130°C for 15h to obtain a cross-linked polyacrylamide / nickel chloride / sodium chloride hydrogel. The gel was quickly frozen with liquid nitrogen, and dried in a freeze dryer for 24 hours (temperature -50°C, vacuum degree 8 Pa) to obtain a cross-linked polyacrylamide / nickel chlori...

Embodiment 3

[0034] Take 30mL polyacrylamide mother liquor (5wt%), add 45mL deionized water and dilute to form a uniform solution with a concentration of 2%, add dropwise 10.0g F127-resole phenolic resin mixture aqueous solution (mass concentration is 6.84%) under stirring conditions, Stir well. Add 2.67g NiCl to the solution 2 ·6H 2 O, stir evenly, the nickel ion concentration in the solution is 150mmol / L; Add 7.46g NaCl in the solution, stir well, the sodium chloride concentration in the solution is 1.5mol / L; Finally, in the polymer solution, add dropwise 300 μ L hydrochloric acid ( 3mol / L) and stirred evenly, the above solution was transferred to a polytetrafluoroethylene-lined autoclave, and hydrothermally reacted at 130°C for 15h to obtain a cross-linked polyacrylamide / nickel chloride / sodium chloride hydrogel. The gel was quickly frozen with liquid nitrogen, and dried in a freeze dryer for 24 hours (temperature -50°C, vacuum degree 8 Pa) to obtain a cross-linked polyacrylamide / nicke...

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Abstract

The invention belongs to the technical field of energy storage materials, the invention relates to a method for preparing a high specific capacity nano composite material by using a dual- template, Asthat electrode material of the supercapacitor is prepare, the problem of low specific capacitance of composites is not conducive to the application of materials, that is, block copolymer F127 is usedrespectively, As that soft template and the hard template, Combined with the crosslinking reaction of cresol-formaldehyde resin and polyacrylamide, A crosslinked polyacrylamide / nickel salt / sodium chloride aerogel was prepared, after calcination and template removal, In-situ nitrogen doping, carbothermal reduction, catalytic graphitization and formation of high specific capacity three-dimensionalporous structure nitrogen doped carbon / nickel / nickel oxide nanocomposites are realized. The preparation process is simple, the principle is reliable, and the composite has excellent electrochemical performance as the electrode material of supercapacitor, which has good economic benefits and application prospects.

Description

Technical field: [0001] The invention belongs to the technical field of energy storage materials, and relates to a method for preparing a high specific capacity three-dimensional porous structure nitrogen-doped carbon / nickel / nickel oxide nanocomposite material (NPGC(resol) / Ni / NiO-NaCl) by using a double template, and the product It can be used in the preparation of electrode materials for supercapacitors. Background technique: [0002] Supercapacitor is a new type of energy storage device, which has the advantages of high power density, fast charge and discharge, long cycle life, high efficiency, cleanliness and safety. Electrode materials have an important impact on the performance of devices such as supercapacitors, including the specific surface area, electrical conductivity, and electrochemical activity of electrode materials. The key technology for preparing supercapacitor electrode materials is to control the composition and structure of materials. [0003] In terms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/46H01G11/86B82Y30/00
CPCH01G11/26H01G11/30H01G11/46H01G11/86B82Y30/00Y02E60/13
Inventor 赵继宽李尧
Owner QINGDAO UNIV OF SCI & TECH
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