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Preparation of cobalt hydroxide@carbon fiber nanocomposite and application in serving as supercapacitor electrode material

A technology of nanocomposite materials and supercapacitors, which is applied in the fields of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nanotechnology, etc., can solve the problems of capacitive performance degradation, easy aggregation, etc., to improve conductivity and weaken agglomeration , the effect of simple preparation method

Inactive Publication Date: 2016-12-07
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, cobalt hydroxide is prone to aggregation during the preparation process, whi

Method used

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  • Preparation of cobalt hydroxide@carbon fiber nanocomposite and application in serving as supercapacitor electrode material
  • Preparation of cobalt hydroxide@carbon fiber nanocomposite and application in serving as supercapacitor electrode material

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Embodiment

[0016] (1) Put 2 g of commercially available medical absorbent cotton in a quartz boat and place it in the middle of a tube furnace, and place it in a nitrogen atmosphere at 500 o C roasting for 3 hours, the heating rate is 5 o C / min, and then naturally cooled to room temperature under a nitrogen atmosphere to obtain a carbon fiber material.

[0017] (2) Add 0.626 g of cobalt nitrate and 0.2 g of hexamethylenetetramine into 40 mL of distilled water and stir to dissolve. After complete dissolution, add the carbon fiber material obtained in step (1) and place in a 100 mL hydrothermal kettle at 100 o Under reaction 12 hours under C; After reaction finishes, it is naturally cooled to room temperature, product is filtered, 30 o C deionized water washing; the sample after washing in the blast drying oven for 80 o C dried for 12 hours to obtain cobalt hydroxide@carbon fiber nanocomposite, and the scanning electron microscope image of cobalt hydroxide@carbon fiber nanocomposite is ...

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Abstract

The invention discloses preparation of a cobalt hydroxide@carbon fiber nanocomposite and application in serving as a supercapacitor electrode material. The method includes the steps that 1, 2 g of medical absorbent cotton available in the market is put into a quartz boat, the quartz boat is placed in the middle of a tube furnace, the medical absorbent cotton is roasted for 3 h at 500 DEG C in a nitrogen atmosphere at the temperature rising rate of 5 DEG C/min and then naturally cooled to the room temperature in the nitrogen atmosphere, and a carbon fiber material is obtained; 2, 0.626 g of cobalt nitrate and 0.2 g of hexamethylenetetramine are added into 40 mL of distilled water and stirred to be dissolved, the carbon fiber material is added after complete dissolution, the mixture is put into a 100 mL hydrothermal kettle to react for 12 h at 100 DEG C, the mixture is naturally cooled to the room temperature after the reaction is finished, and the product is filtered, washed with 30 DEG C deionized water and dried for 12 h at 80 DEG C in an air blowing drying oven. The preparation method is simple and easy to implement, and the obtained cobalt hydroxide@carbon fiber nanocomposite shows an excellent effect when serving as the supercapacitor electrode material.

Description

technical field [0001] The invention relates to a preparation method of a supercapacitor electrode material, in particular to the preparation of a cobalt hydroxide@carbon fiber nanocomposite material and the application of the supercapacitor electrode material. Background technique [0002] With the rapid development of social economy and the rapid growth of population, the shortage of resources and energy and the deterioration of the ecological environment have become problems to be solved today. In order to solve these problems, it is urgent to develop environmentally friendly sustainable energy with high utilization rate and low pollution. New energy sources that have been developed or are being researched and developed include wind energy, ocean energy, solar energy, hydrogen energy, and nuclear energy. In order to make full use of these new energies, a matching energy storage device is required. In recent years, supercapacitors have received extensive attention as a h...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/40H01G11/36H01G11/86B82Y30/00
CPCY02E60/13H01G11/30B82Y30/00H01G11/36H01G11/40H01G11/86
Inventor 冯艳艳杨文钟开应梁育铭杨辉韦葵珍
Owner GUILIN UNIVERSITY OF TECHNOLOGY