High-density nitrogen-oxygen-chlorine co-doped carbon particle material as well as preparation method and application thereof

Abstract

The invention relates to a high-density nitrogen-oxygen-chlorine co-doped carbon particle material, and a preparation method and application thereof. The method comprises the following steps: S1, uniformly mixing hexachlorobutadiene and aniline, and carrying out a heating closed reaction in a hydrothermal kettle; S2, after the reaction is finished, naturally cooling to normal temperature and normal pressure, and washing and drying the obtained solid to obtain a dried sample; and S3, carrying out high-temperature calcination treatment on the dried material under the protection of inert gas, soas to obtain the high-density nitrogen-oxygen-chlorine co-doped carbon particles, and the invention also relates to the composite material, application and a super capacitor working electrode comprising the composite material. The high-density nitrogen-oxygen-chlorine co-doped carbon particles have excellent performance, can be used for preparing a working electrode of a super capacitor, can be used in the super capacitor, show good electrochemical energy storage characteristics, and have huge application potential and industrial value in the field of electrochemical energy storage.

Description

technical field [0001] The invention belongs to the field of inorganic functional materials and new energy electrode materials, specifically refers to a composite material and its preparation method, application and electrode prepared therefrom, especially refers to a simple and efficient high-density nitrogen, oxygen and chlorine co-doping Carbon particulate material preparation method, use and preparation method of supercapacitor comprising same. Background technique [0002] Supercapacitors, including electric double layer capacitors (EDLCs) and pseudocapacitors, are electrochemical energy storage devices that combine the properties of physical capacitors and batteries, offering higher power densities than batteries and higher energy density than conventional dielectric capacitors. Energy Density. Capacitors are a promising replacement or complement in rechargeable batteries when high power delivery and fast energy harvesting are required, while satisfying the need for h...

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Problems solved by technology

The above preparation methods involve the change of low temperature and high temperature, and the required time is longer, the energy consumption is high, and the operation is more cumbersome.

[0007] CN108039283B discloses a nitrogen-rich doped hierarchical porous carbon material based on in-situ polymerization and its preparation method and application. It is prepared by the following method: mixing imidazole derivatives and hexachlorobutadiene, ultrasonication for 1h, and heating at a temperature of Airtight reaction at 180-220°C for 4h-12h, then release the pressure to normal pressure and dry to obtain a solid substance; under the protection of an inert gas, subject the obtained solid substance to high-temperature treatment at 700-900°C to obtain the finished product ; The nitrogen-rich doped hierarchical porous carbon material based on in-situ polymerization provided by the present invention has a capacitance of 684 F / g in an acidic electrolyte solution, but the cost is high and it is difficult to obtain practical application in industry

The nitrogen-sulfur co-doped porous carbon microsphere composite material has excellent electrical properties and can be applied to the field of capacitors, but the yield is low and it is difficult to synthesize on a large scale

[0009] CN107758641B discloses a three-dimensional flaky nitrogen-sulfur co-doped porous carbon material and its preparation method and application. The method is to seal pyridine, hexachlorobutadiene and thiocyanate under a reaction pressure higher than atmospheric pressure reaction, after the reaction is over, the pressure is released to normal pressure, and after drying the sample, the sample is subjected to high-temperature treatment under the protection of an inert gas, thereby obtaining the three-dimensional sheet-like nitrogen-sulfur co-doped porous carbon material, but using pyridine as a raw material , with high toxicity and odor

[0010] As mentioned above, the prior art discloses a variety of methods for preparing nitrogen-doped new materials using technology, and thus obtains a variety of new materials with excellent electrical properties, but although these new nitrogen-doped materials have better Specific capacitance and stability, but there are still defects such as low volume energy density in terms of performance. At the same time, in terms of technology, the reaction process is complicated, the requirements for equipment are high, and the raw materials are not environmentally friendly, which seriously limits its practical application and industrial production.

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