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A kind of preparation method of MNO2/carbon fiber tube composite electrode material

A carbon fiber tube and composite electrode technology, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, can solve the problems of long time and reduce material synthesis efficiency, and achieve simple steps, short synthesis time and high yield. Effect

Inactive Publication Date: 2018-03-30
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can be found from the above-mentioned published literature that the preparation process takes a long time, which seriously reduces the synthesis efficiency of the material. Therefore, it is of great research significance to develop a fast and efficient preparation method for supercapacitor electrode materials

Method used

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  • A kind of preparation method of MNO2/carbon fiber tube composite electrode material
  • A kind of preparation method of MNO2/carbon fiber tube composite electrode material
  • A kind of preparation method of MNO2/carbon fiber tube composite electrode material

Examples

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Effect test

Embodiment 1

[0016] In this embodiment, 33mg carbon fiber tube, 17mg KMnO 4 Add it to 20ml of deionized water successively, ultrasonically disperse for 10min, then transfer it to the reaction bottle, then put the reaction bottle into a microwave synthesis instrument, set the temperature at 185°C, and the reaction time is 10min; after the reaction, the obtained sample is centrifuged ( 6000rpm) were collected, washed twice with deionized water and ethanol, and dried at 60°C for 12h to prepare the obtained MnO 2 / carbon fiber tube composite electrode material.

[0017] This embodiment is to the prepared MnO 2 / Carbon fiber tube composite electrode material for TEM characterization, such as figure 1 Shown, MnO 2 It is a nanorod structure with a diameter of 6-8nm and a length of 20-70nm, which is evenly attached to the surface of the carbon fiber tube.

Embodiment 2

[0019] In this embodiment, 33mg carbon fiber tube, 34mg KMnO 4 Add it to 20ml of deionized water successively, ultrasonically disperse for 10min, then transfer it to the reaction bottle, then put the reaction bottle into a microwave synthesis instrument, set the temperature at 185°C, and the reaction time is 10min; after the reaction, the obtained sample is centrifuged ( 6000rpm) were collected, washed twice with deionized water and ethanol in turn, and dried at 60°C for 12h to prepare MnO 2 / carbon fiber tube composite electrode material.

[0020] This embodiment is to the prepared MnO 2 / Carbon fiber tube composite electrode material for TEM characterization, such as figure 1 Shown, MnO 2 It is a nanorod structure with a diameter of 6-8nm and a length of 20-70nm, which is densely attached to the surface of the carbon fiber tube. Compared with the sample obtained in Example 1, MnO 2 content increased significantly.

[0021] The MnO that this embodiment will prepare 2 / ...

Embodiment 3

[0023] In this embodiment, 33mg carbon fiber tube, 51mg KMnO 4 Add it into 20ml deionized water successively, ultrasonically disperse it for 10min, then transfer it to the reaction bottle, then put the reaction bottle into the microwave synthesis instrument, set the temperature at 185°C, and the reaction time is 10min; after the reaction, the obtained sample is centrifuged ( 6000rpm) were collected, washed twice with deionized water and ethanol in turn, and dried at 60°C for 12h to prepare MnO 2 / carbon fiber tube composite electrode material.

[0024] This embodiment is to the prepared MnO 2 / Carbon fiber tube composite electrode material for TEM characterization, such as image 3 Shown, MnO 2 It is a nanorod structure with a diameter of 6-10nm and a length of 50-150nm, which is densely attached to the surface of the carbon fiber tube. Compared with the sample obtained in Example 2, MnO 2 The content is further increased, and the growth is more intensive.

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Abstract

The invention belongs to the technical field of preparation of electrode materials for supercapacitors, and relates to a method for preparing a MnO2 / carbon fiber tube composite electrode material. KMnO4 and carbon fiber tubes are used as reaction raw materials, deionized water is used as a solvent, and MnO2 / carbon fiber tubes are prepared using microwave radiation synthesis technology Composite electrode material, the synthesis time is very short, the steps are simple, the yield is high, and it is suitable for batch preparation of MnO2 / carbon composite electrode material; the MnO2 in the prepared MnO2 / carbon fiber tube composite electrode material is a nano-rod structure, which is evenly attached to the surface of the carbon fiber tube. Highly dispersed, providing a large contact area in the electrolyte, which is conducive to exerting the pseudocapacitive effect; the carbon fiber tube enhances the conductivity of the material and improves the electron conduction efficiency during the reaction process, thereby improving the capacitive characteristics of the material.

Description

Technical field: [0001] The invention belongs to the technical field of supercapacitor electrode material preparation and relates to a kind of MnO 2 / Preparation method of carbon fiber tube composite electrode material, specifically related to a mace-shaped MnO 2 / Preparation method of carbon fiber tube supercapacitor composite electrode material. Background technique: [0002] As an energy storage device, supercapacitors have the characteristics of simple structure, high power density, fast charge and discharge, long cycle life, and wide operating temperature range. They have broad application prospects in many fields such as electric vehicles, aerospace vehicles, and military affairs. It has attracted extensive attention of researchers at home and abroad, and has become one of the research hotspots in the field of chemical power sources. [0003] The energy storage mechanism of supercapacitors can be divided into three categories: adsorption-based electric double layer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/36H01G11/46H01G11/86
CPCY02E60/13
Inventor 张军刘相红
Owner QINGDAO UNIV
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