Graphene-based aerogel electrode material containing sepiolite for corrosion prevention and preparation method of aerogel electrode material

Abstract

The invention discloses a graphene-based aerogel electrode material containing sepiolite for corrosion prevention and a preparation method of the aerogel electrode material. The graphene-based aerogel electrode material containing sepiolite for corrosion prevention is characterized by preparing from the following raw materials: 2-3 of sepiolite, 10-20 of graphene oxide, 10-20 of glucose, 1-2 of sodium dodecyl sulfate, 20-30 of ZnCl2 solution, 30-40 of KMnO4, 80-100 of ethyl alcohol, 2-4 of acrylic emulsion, 3-5 of silane coupling agent KH560, 20-30 of pyrrole, 35-45 of p-toluenesulfonic acid, 35-40 of ammonium peroxydisulfate solution and 500-1,000 of distilled water. The attachment of manganese dioxide onto a surface of aerogel is facilitated after the aerogel is activated by ZnCl2, meanwhile, a dual-electrical layer capacitor and a Faraday capacitor can be combined by the attachment of manganese dioxide, the specific capacitance of a supercapacitor can be improved, the electrical conductivity of the manganese dioxide and the impregnation capability of an electrolyte can be also improved, and the cycle performance of the electrolyte is improved; and with the addition of the sepiolite in a matching way, the material is endowed with a corrosion prevention function.

Description

Technical field [0001] The invention relates to an electrode material of a super capacitor, in particular to a graphene-based aerogel electrode material containing sepiolite anticorrosion and a preparation method thereof. Background technique [0002] MnO 2 Due to its abundant reserves, low price, environmental friendliness, and good capacitance properties under a wide working window, it becomes one of the ideal electrode materials in the field of supercapacitors. However, currently MnO 2 The capacitance value that the material can actually achieve is only 30% or even lower of the theoretical capacitance value. In order to further improve the performance of MnO2 electrode materials, 2 The study of the charge storage mechanism of materials is very necessary. Three-dimensional graphene-based aerogel is a new type of self-assembled three-dimensional porous carbon material with micron structure developed in recent years. Due to its unique structure, it has special properties: 1) ultr...

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Problems solved by technology

[0004] Based on the above considerations, the present invention aims to provide a graphene-based airgel electrode material, which solves the existing problems of airgel and MnO 2 The combination is not tight enough, its activation is not good, etc.