Method for directly preparing carbon fiber electrode containing nitrogen with melamine formaldehyde resin/polyvinyl accohol water solution through high-voltage electrostatic spinning technology

Abstract

The invention discloses a method for directly preparing a carbon fiber electrode containing nitrogen with melamine formaldehyde resin/polyvinyl accohol water solution through high-voltage electrostatic spinning technology, and relates to the method for preparing the fiber electrode containing nitrogen. The invention aims at solving the problems of environmental pollution, complex process of electrode preparation and high inner resistance caused by the fact that all of fiber films containing nitrogen take polyacrylonitrile organic solution as the original spinning solution. The preparation method is as follows: mixing the polyvinyl alcohol water solution and the melamine formaldehyde resin water solution to prepare the original spinning solution; preparing foam nickel attached with a melamine formaldehyde resin/polyvinyl alcohol compound fiber film through high-voltage electrostatic spinning technology; the film and the foam nickel are carbonized together to directly form the carbon fiber film containing nitrogen on the foam nickel; and tabletting the foam nickel attached with the carbon fiber film containing nitrogen to get the carbon fiber electrode containing nitrogen. According to the invention, the preparation of the carbon fiber film containing nitrogen and the preparation of electrode can be simultaneously completed. The method has the advantages of simple operation method, low pollution, low inner resistance of the electrode and high specific capacitance, and therefore is suitable for producing the carbon fiber electrode containing nitrogen.

Description

technical field [0001] The invention relates to a preparation method of nitrogen-containing carbon fiber electrodes. Background technique [0002] In the 21st century, with global warming and the gradual depletion of non-renewable resources such as coal, oil, and natural gas, energy and environmental issues have increasingly become key issues affecting human survival and development. Supercapacitors, as a new type of energy storage product that is focused on development today, are being developed and produced by more and more countries and enterprises. The research on supercapacitors mainly focuses on the preparation of high-performance electrode materials and electrodes. Due to its high specific surface area, electrical conductivity and high stability, carbon powder materials have attracted the research interest of scientists from all over the world, and some of them have been commercialized. However, carbon materials have the following problems: First, due to the restric...

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Problems solved by technology

[0005] The present invention aims to solve the environmental pollution problem caused by using the organic solution of polyacrylonitrile as the spinning liquid in the existing nitrogen-containing carbon fiber films, and the operation method of preparing the supercapacitor electrode by the traditional coating process is complicated and the prepared electrode The problem of high resistance and thus affecting the specific capacitance performance of electrode materials, and a method for directly preparing nitrogen-containing carbon fiber electrodes through high-voltage electrospinning technology in melamine formaldehyde resin / polyvinyl alcohol aqueous solution

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