Method for preparing porous nano carbon materials with biomass serving as carbon source

Abstract

The invention relates to a method for preparing porous nano carbon materials with biomass serving as a carbon source, particularly to a method for preparing nano carbon materials with biomass fasciculus vascularis luffae serving as the carbon source, and solves the problems that methods for preparing existing nano carbon materials are complex in technological process and higher in preparation cost and the prepared nano carbon materials are low in specific surface area and poorer in stored energy. The preparation method comprises the steps as follows: I, pretreatment of the fasciculus vascularis luffae; II, activation and drying of the fasciculus vascularis luffae; III, heat treatment under inert gases; IV, treatment with an acid leaching method. Compared with the existing nano carbon materials, the porous nano carbon materials prepared with the biomass fasciculus vascularis luffae serving as the carbon source have the advantages that the specific surface area is significantly increased, and the materials have good electrochemical performance; the method is simple in experimental process, and large-scale industrial production can be realized by the aid of biological resources.

Description

technical field [0001] The invention relates to a method for preparing a porous nano-carbon material by using biomass as a carbon source. Background technique [0002] Energy is the material basis of human activities. In a sense, the development of human society is inseparable from the use of high-quality energy. However, with the depletion of primary energy such as coal, crude oil, and natural gas, how to efficiently utilize existing energy and store it reasonably has become a research hotspot, so people urgently need to find a high-performance new energy storage material. [0003] Due to its excellent chemical stability, electrical conductivity, and low-temperature oxidation resistance, nano-carbon materials have important applications in energy storage fields such as lithium-ion batteries, supercapacitors, and fuel cells. In the past few years, the traditional nano-carbon materials that have been studied more include activated carbon, carbon nanotubes, graphene and thei...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high production cost, high price, complex process, low specific surface area of ​​the produced nano-carbon material and poor energy storage in the existing preparation of porous nano-carbon materials, and to provide a production method. Method for preparing porous nano-carbon material with substance as carbon source

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