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Sandwiched interlayer structure Ni(OH)2/CNTs/Ni(OH)2 composite material preparing method

A technology of sandwich structure and composite material, which is applied in the directions of double-layer capacitors, hybrid capacitor electrodes, electrolytic capacitors, etc., can solve the problems of high electronic conductivity, low capacity and energy density, and large specific surface area of ​​carbon materials, and achieves simple process, The effect of improving conductivity, specific capacity, and high purity

Inactive Publication Date: 2015-03-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon materials have high electronic conductivity, large specific surface area, good corrosion resistance, good thermal stability, low cost and easy processing; but their low capacity and energy density limit their further development

Method used

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  • Sandwiched interlayer structure Ni(OH)2/CNTs/Ni(OH)2 composite material preparing method
  • Sandwiched interlayer structure Ni(OH)2/CNTs/Ni(OH)2 composite material preparing method
  • Sandwiched interlayer structure Ni(OH)2/CNTs/Ni(OH)2 composite material preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Layered Ni(OH) 2 synthesis of structures

[0042] The first step, accurately weigh 0.03565g NiCl 2 ·6H 2 O, dissolved in 5mL oleylamine and 5mL octylamine mixed solution, NiCl 2 ·6H 2 The concentration of O dispersed in the mixed solution of oleylamine and octylamine is 0.015mol / L; the volume ratio of oleylamine to octylamine is 1:1; a 50mL round bottom flask equipped with a magnetic stirrer, a reflux condenser, and a thermometer is placed In an oil bath, heat under reflux at 120°C for 2h in an oil bath, and cool to room temperature naturally.

[0043] The second step, accurately weigh 0.1349g KBH 4 , dissolved in 50mL deionized water and mixed well. Draw 10mL KBH with a syringe 4 solution, slowly dropwise added to the above solution, and then let stand for 48h. KBH 4 The concentration of the solution is 0.05mol / L; the solution changes from the initial light blue to colorless, and a light green precipitate is obtained at the oil-water two-phase interface, wh...

Embodiment 2

[0055] Layered Ni(OH) 2 The preparation method of material comprises the following steps:

[0056] NiCl 2 ·6H 2 O dissolved in the mixed solution of oleylamine and octylamine, NiCl 2 ·6H 2 The concentration of O dispersed in the mixed solution of oleylamine and octylamine is 0.01mol / L; the volume ratio of oleylamine to octylamine is 1:1; heating to reflux, the heating temperature is 120 °C, and the reflux time is 2h; naturally cool to Room temperature; add KBH at a concentration of 0.03mol / L 4 The solution was washed repeatedly after standing, and the standing time was 30h; repeated washing refers to alternating washing with absolute ethanol and deionized water, and vacuum drying at a temperature of 50°C for 15h to obtain layered Ni(OH) 2 Material.

[0057] The preparation method of acidified multi-walled carbon nanotubes comprises the following steps:

[0058] Dissolving multi-walled carbon nanotubes in H 2 SO 4 and HNO 3 In the mixed solution, multi-walled carbon n...

Embodiment 3

[0062] Layered Ni(OH) 2 The preparation method of material comprises the following steps:

[0063] NiCl 2 ·6H 2 O dissolved in the mixed solution of oleylamine and octylamine, NiCl 2 ·6H 2 The concentration of O dispersed in the mixed solution of oleylamine and octylamine is 0.02mol / L; the volume ratio of oleylamine to octylamine is 1:1.5; heating to reflux, the heating temperature is 120°C, and the reflux time is 2h; naturally cool to Room temperature; add KBH with a concentration of 0.04mol / L 4 The solution was washed repeatedly after standing still, and the standing time was 60h; repeated washing refers to alternating washing with absolute ethanol and deionized water, and vacuum drying at a temperature of 80°C for 10h to obtain layered Ni(OH) 2 Material.

[0064] The preparation method of acidified multi-walled carbon nanotubes comprises the following steps:

[0065] Dissolving multi-walled carbon nanotubes in H 2 SO 4 and HNO 3 In the mixed solution, multi-walled...

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Abstract

The invention discloses a sandwiched interlayer structure Ni(OH)2 / CNTs / Ni(OH)2 composite material preparing method. The method includes the following steps that polyvinyl pyrrolidone is dissolved in deionized water, and the polyvinyl pyrrolidone and the deionized water are stirred and evenly mixed; layered Ni(OH)2 materials are added in and dissolved in the solution, stirring is performed for the first time, products are collected in a centrifuging mode, vacuum drying is performed for the first time after washing is performed repeatedly, and then processed Ni(OH)2 can be obtained; the processed Ni(OH)2 and acidulated multi-wall carbon nanometer tubes are dissolved in deionized water, stirring is performed, after one night, products are collected in a centrifuging mode, vacuum drying is performed for the second time after washing is performed repeatedly, and sandwiched interlayer structure Ni(OH)2 / CNTs / Ni(OH)2 composite materials are obtained. According to the method, metal hydroxide is doped with carbon materials, and therefore not only can agglomeration of the metal hydroxide be prevented, but also the electrical conductivity and the specific capacity of the metal hydroxide can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to the preparation of sandwich structure Ni(OH) by a two-phase interface method 2 / CNTs / Ni(OH) 2 Composite method. Background technique [0002] With the development of the economy, the accompanying greenhouse effect, climate change and the consumption of fossil fuels (such as coal, oil and natural gas, etc.), force mankind to face the dual challenges of environmental problems and energy crises, making the development of new energy and renewable energy Clean energy has become an urgent issue in today's world. As a new type of energy storage device, supercapacitor has good electrical properties, high energy density, long cycle life, fast charge and discharge speed, cheap and easy to obtain, showing irreplaceable advantages, and has attracted people's attention and attention. , in the fields of laser weapons, intelligent distributed power grid system, new en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30
CPCH01G11/00H01G11/30H01G11/36Y02E60/13
Inventor 温鸣毋青男邢柯陈世培房昊
Owner TONGJI UNIV
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