Preparation method of rare earth composite biomass-based capacitor carbon material

Abstract

The invention discloses a preparation method of a rare earth composite biomass-based capacitor carbon material, which comprises the following steps: by using rice husk, straw, straw, folium cycas andbamboos as raw materials, and carrying out low-temperature carbonization, alkali liquor low-temperature impregnation, alkali liquor etching activation and rare earth high-temperature compounding by using a chemical activation method to prepare the rare earth composite capacitor carbon material. By mastering the action mechanism of rare earth ions or rare earth compounds and adopting trace doping compounding, the capacitor carbon material is modified, and the specific capacitance, cycle life and other properties of the capacitor carbon are further improved. Finally, the advantages of the rare earth material are utilized to the maximum extent, the cost is reduced, and the application prospect of the rare earth material in the future energy storage field is wider. According to the method, agricultural and forestry waste biomass resources which are rich in reserves, cheap and easy to obtain are used as raw materials, the biomass resources are reasonably utilized, and the method has great significance in stabilizing agricultural ecological balance, improving the energy structure and relieving environmental pressure.

Description

technical field

[0001] The invention relates to a preparation method of a rare earth composite biomass-based capacitor carbon material, belonging to the field of biomass functional materials. Background technique

[0002] With the increasing development of human society, the consumption of fossil resources has reached the limit, which has led to serious environmental pollution and depletion of non-renewable resources. Vigorously developing green and renewable energy is the primary issue to solve the harmonious and sustainable development of human society. Green renewable energy such as wind energy, water energy, solar energy, and tidal energy all have problems such as geographical restrictions, discontinuity, instability, and difficulty in control. Therefore, it is necessary to vigorously develop new energy technologies and high-performance energy storage devices to resolve this contradiction, and realizing effective storage and utilization of energy has become the key to t...

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