A preparation method of flexible and highly conductive three-dimensional interconnected hollow carbon fibers

Abstract

The invention relates to the field of high-conductivity carbon materials and particularly relates to a preparation method of flexible high-conductivity three-dimensional connective hollow carbon fiber. The method comprises the following steps: by taking a long cellulose network as a raw material, carbonizing cellulose by high-heat treatment in an inert atmosphere, and performing expansion treatment to obtain a pore-controllable hollow high-conductivity flexible carbon fiber network structure. According to the method, the conductivity of a carbon fiber network is regulated ad controlled by virtue of different treatment temperature and different treatment time. The flexible high-conductivity three-dimensional connective hollow network-structure carbon fiber solves the problem that a common carbon material cannot have flexibility, high load bearing capacity and high conductivity at the same time.

Description

technical field

[0001] The invention relates to the field of high-conductivity carbon materials, in particular to a method for preparing flexible and high-conductivity three-dimensional connected hollow carbon fibers. Background technique

[0002] Due to its excellent chemical stability, good electrical conductivity, high strength, and large specific surface area, three-dimensional conductive nanocarbon materials are expected to be used in active material storage, flexible display, advanced Thermal interface materials, flexible wearable products, etc. For this reason, the research on the controllable preparation of flexible and highly conductive carbon materials has received more and more attention. At present, flexible conductive carbon materials mainly include carbon nanotubes, graphene, graphene oxide aggregates, graphene foam three-dimensional conductive network, etc.

[0003] At present, the flexible and highly conductive network mainly has the following problems: the...

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