A biochar-carbon nanotube composite material, a preparation method and application thereof

Abstract

The application belongs to the technical field of carbon materials, and particularly relates to a biochar-carbon nanotube composite material and a preparation method and application thereof; the preparation method of the biochar-carbon nanotube composite material provided in the application comprises the following steps: soaking plant biomass such as straw in a transition metal salt solution such as nickel nitrate, and then sequentially performing heating carbonization, generating a transition metal catalyst, and in-situ synthesizing carbon nanotubes after drying, so as to obtain the biochar-carbon nanotube composite material; compared with biochar synthesized by heating and carbonization of plant biomass, the biochar-carbon nanotube composite material synthesized by the preparation method provided in the application can form a three-dimensional network structure, has a small defect degree, a low resistivity, and superior conductive performance, so that the technical problem that carbon materials with good conductive performance cannot be synthesized by using plant biomass in the prior art is solved.

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