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
CN106449147AInactive Publication Date: 2017-02-22GUANGZHOU UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU UNIVERSITY
Publication Date
2017-02-22
Estimated Expiration
Not applicable · inactive patent

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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.
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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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