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CMS/MnO2/PPY (carbon microsphere/manganese dioxide/polypyrrole) composite electrode material, as well as preparation method and application thereof

A composite electrode and mixed solution technology is applied in the field of composite materials to achieve the effects of easy commercialization and large-scale production, uniform PPY dispersion and low cost

Inactive Publication Date: 2017-02-22
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, there are no literature or patent reports on the preparation of CMS / MnO 2 / PPY composite electrode material method

Method used

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  • CMS/MnO2/PPY (carbon microsphere/manganese dioxide/polypyrrole) composite electrode material, as well as preparation method and application thereof
  • CMS/MnO2/PPY (carbon microsphere/manganese dioxide/polypyrrole) composite electrode material, as well as preparation method and application thereof
  • CMS/MnO2/PPY (carbon microsphere/manganese dioxide/polypyrrole) composite electrode material, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (A)CMS / MnO 2 Preparation of / PPY composite electrode material

[0047] Put 4g of glucose and 40mL of distilled water into a 50mL stainless steel reactor with built-in polytetrafluoroethylene, react at 180°C for 12h, then cool, centrifuge, wash thoroughly, and then dry at 60°C for 6h to obtain the carbon microsphere material; Add 0.05g of the carbon microsphere material prepared above, add 10mL of distilled water, and sonicate for 10min; weigh 0.25g of potassium permanganate, add it to the above mixed solution, stir to make it fully dissolve; then place it in an ultrasonic cleaning machine with an ultrasonic power of 400W Sonicate in the device for 30 minutes, and control the temperature at 10-35°C; centrifuge the black suspension after ultrasonication, wash thoroughly, and dry at 80°C for 6 hours to obtain CMS / MnO 2 Material. Add 0.4g of p-toluenesulfonic acid into 30mL of absolute ethanol and stir evenly, then add 0.05g of pyrrole into the above solution, stir for 10...

Embodiment 2

[0061] Put 4g of glucose and 40mL of distilled water into a 50mL stainless steel reactor with built-in polytetrafluoroethylene, react at 180°C for 12h, then cool, centrifuge, wash thoroughly, and then dry at 60°C for 6h to obtain the carbon microsphere material; Add 0.05g of the carbon microsphere material prepared above, add 10mL of distilled water, and sonicate for 10min; weigh 0.25g of potassium permanganate, add it to the above mixed solution, stir to make it fully dissolve; then place it in an ultrasonic cleaning machine with an ultrasonic power of 400W Sonicate in the device for 60 minutes, and control the temperature at 10-35°C; centrifuge the black suspension after ultrasonication, wash thoroughly, and dry at 80°C for 6 hours to obtain CMS / MnO 2 Material. Add 0.3g of p-toluenesulfonic acid into 30mL of absolute ethanol and stir evenly, then add 0.03g of pyrrole into the above solution, stir for 10min, and record it as solution A; add 0.04g of ammonium persulfate into 2...

Embodiment 3

[0063] Put 4g of glucose and 40mL of distilled water into a 50mL stainless steel reactor with built-in polytetrafluoroethylene, react at 180°C for 15h, then cool, centrifuge, wash thoroughly, and then dry at 60°C for 6h to obtain the carbon microsphere material; Add 0.01g of the carbon microsphere material prepared above, add 10mL of distilled water, and ultrasonicate for 10min; weigh 0.1g of potassium permanganate, add it to the above mixed solution, stir to make it fully dissolve; then place it in an ultrasonic cleaning machine with an ultrasonic power of 400W Sonicate in the device for 30 minutes, and control the temperature at 10-35°C; centrifuge the black suspension after ultrasonication, wash thoroughly, and dry at 80°C for 6 hours to obtain CMS / MnO 2 Material. Add 0.4g of p-toluenesulfonic acid into 30mL of absolute ethanol and stir evenly, then add 0.05g of pyrrole into the above solution, stir for 10min, and record it as solution A; add 0.04g of ammonium persulfate in...

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Abstract

The invention discloses a CMS / MnO2 / PPY (carbon microsphere / manganese dioxide / polypyrrole) composite electrode material, as well as a preparation method and application thereof. The method is convenient to operate, mild in condition, low in cost and environment-friendly, and commercial and large-scale production is easy to implement. The surface of a prepared CMS contains a large number of active groups capable of reacting with potassium permanganate in situ to generate nanoscale MnO2 attached to the surface of the CMS, and the CMS / MnO2 material has a relatively wide potential window. Moreover, the surface of MnO2 is uniformly coated with PPY according to a chemical oxidation method, the PPY of the prepared CMS / MnO2 / PPY composite electrode material is dispersed more uniformly, conductive particles are required to penetrate through shorter paths, and the electrical conductivity and specific capacity of the CMS / MnO2 / PPY material can be remarkably improved. The CMS / MnO2 / PPY composite electrode material is used as an electrode material for a supercapacitor, and has very high specific capacity, high power density, high cycling stability and a broad industrial application prospect.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a CMS / MnO 2 / PPY composite electrode material and its preparation method and application. Background technique [0002] As a new type of energy storage device, supercapacitors can provide higher energy density than electrostatic capacitors, higher power density than batteries, and it has a longer cycle life (Z.Gao, et al.Chemistry of Materials, 2011 , 23(15):3509-3516.). According to different energy storage mechanisms, supercapacitors can be divided into electric double layer capacitors and redox capacitors. The capacitance of the former is mainly based on the electric double layer capacitance generated by the charge separation on the electrode and the electrolyte, while the latter is the underpotential deposition of electroactive substances on the surface of the electrode or in the two-dimensional or quasi-two-dimensional space in the bulk phase. , a highly reversible chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/36H01G11/32H01G11/48H01G11/86
CPCY02E60/13H01G11/30H01G11/32H01G11/36H01G11/46H01G11/48H01G11/86
Inventor 陈胜洲李宁邹汉波吴宗键郑伟乐
Owner GUANGZHOU UNIVERSITY
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