Nitrogen-enriched doped multistage porous carbon material based on in-situ polymerization and preparation method and application thereof

Abstract

The invention discloses nitrogen-enriched doped multistage porous carbon material based on in-situ polymerization and a preparation method and application thereof. The material is prepared according to the following method: an imidazole derivative and hexachlorobutadiene are mixed under the ultrasonic environment for 1h and react for 4h-12h in a sealed way under the temperature condition of 180-220 DEG C, then the pressure is released to the normal pressure and the mixture is dried so that a solid substance is obtained; and high temperature processing is performed on the obtained solid substance under the temperature of 700-900 DEG C under the protection of inert gas so that the finished product can be obtained. The nitrogen-enriched doped multistage porous carbon material based on in-situpolymerization has excellent electrochemical performance and can be used for preparing the capacitor electrode and especially the supercapacitor electrode so that the material can be used for the capacitor and especially the supercapacitor and has great application potential and industrial value in the field of energy storage.

Description

technical field [0001] The invention provides a nitrogen-rich doped hierarchical porous carbon material that can be used for in-situ polymerization of supercapacitors, a preparation method and application thereof, and belongs to the field of inorganic functional materials. Background technique [0002] Supercapacitor is a kind of power energy storage device, which has the ability of rapid charge and discharge, and has broad application prospects as a power device for hybrid electric vehicles. The performance of capacitors is closely related to the characteristics of electrode materials. Typically, electrode materials require high specific surface area, suitable pore size distribution, excellent electrical conductivity, high physical and chemical stability, high corrosion resistance, and low cost and easy availability. [0003] Carbon materials are widely used due to their large specific surface area, light weight, and high stability. However, carbon materials still have lo...

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Problems solved by technology

Although this method obtains a material with a high specific surface area, the content of nitrogen doping is low, and its energy density is not high

[0009] As mentioned above, the prior art discloses a variety of methods for preparing nitrogen-doped new materials using technology, and thus obtained a variety of new materials with excellent electrical properties, but these new nitrogen-doped materials have better Specific capacitance and stability, but there are still defects such as large current charge and discharge difference and low energy density in performance. At the same time, in terms of technology, the reaction process is complicated and the requirements for equipment are high, which seriously limits its practical application and industrialization. Production

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