Preparation method of codoping electrode nitrogen with porous carbon/ferriferrous oxide composite material for super capacitor, and application thereof

Abstract

The invention relates to a preparation method of codoping electrode nitrogen with porous carbon / ferriferrous oxide composite material for super capacitor, and application thereof. The method comprisesthe steps of adding cyclopentadienyl iron, iron powder, hexachlorobutadiene, pyridine into the inner container of a reaction vessel having 50 ml polytetrafluoroethylene for mixing; sealing the mixture and putting in a high temperature reaction vessel and placing the reaction vessel in a baking oven for reaction; drying the product at the temperature of 120 D for six hours; taking out a proper amount of the sample, and adding urea solution in the sample, and placing the sample in a high temperature reaction vessel and placing the high temperature reaction vessel in the baking oven under the temperature of 200 D for 12-hour reaction, and cooling the sample to room temperature and conducting separation, and placing the sample in a vacuum drying box for drying under the temperature of 90 D; taking out the sample in a quartz tube of a tubular furnace and putting argon in the quartz tube; slowly heating the tubular furnace with the heating rate of 10 D / min for 90 minutes, and conducting automatic cooling on the tubular furnace, and obtaining the sample. The invention is advantageous in that the electrode capacitance produced by the composite material has quite large capacitance value; stability is good, and producing cost is low; massive potential is provided in the electrochemistry field.

Description

Technical field [0001] The invention provides a composite material and a preparation method and application thereof. Specifically, it provides a preparation method and application of an electrode nitrogen and oxygen co-doped porous carbon / ferroferric oxide composite material for supercapacitors, and belongs to inorganic Functional materials and electrochemical energy technology fields. Background technique [0002] In recent years, with the rapid growth of the global economy, the consumption of fossil fuels has increased, which has caused two main problems. On the one hand, the existing fossil fuel reserves are consumed seriously, and human beings are facing the danger of energy depletion. Serious environmental pollution, such as greenhouse gas emissions, air and water pollution, etc. Given these issues, as well as extensive attention to the future situation, in order to maintain the sustainable development of society and a healthy ecosystem, therefore, the development of sustai...

AI Technical Summary

Problems solved by technology

However, compared with lithium batteries, the energy density of supercapacitors is still relatively small. Therefore, it is very important to study substances with high specific capacitance characteristics as electrode materials for supercapacitors. The electrode materials of supercapacitors determine their capacitance performance. One of the key factors, therefore, the preparation of electrode materials with high power density, high energy density, high capacitance and cycle stability is the key to solving the problem

[0004] Although carbon materials have many advantages such as good electrical conductivity and chemical stability, low price, simple preparation, and environmental friendliness, their specific capacitance is only 200 F / g at the highest, and their tap density is low, resulting in low volume specific capacitance. , thus limiting its wide application

The specific capacitance of ruthenium dioxide in transition metal oxides is very high, but the high price of ruthenium limits its wide application in commercial production

Although conductive polymers have the advantages of cheap price, easy preparation, and high Faraday quasi-capacitance, their chemical stability is poor and their capacitance decays quickly.

It can be seen that when different types of electrode materials are used alone, there are disadvantages such as poor conductivity, high cost, low specific capacitance, and poor cycle stability.

Images