Preparing method of graphene thermoelectricity fibers with interphase types p and n

Abstract

The invention discloses a preparing method of graphene thermoelectricity fibers with interphase types p and n, and belongs to the technical field of preparation of graphene fibers. The preparing method comprises the following steps of (1) preparing graphite into a graphene oxide dispersion liquid through chemical synthesis; (2) preparing the graphene oxide dispersion liquid into graphene fibers through chemical reduction; (3) preparing the graphene fibers with interphase types p and n into the thermoelectricity fibers interphase types p and n through doping. According to the preparing method,the graphene thermoelectricity fibers with good continuity of interphase types p and n can be obtained without the use of any binder, the graphene thermoelectricity fibers have good flexibility, continuity and mechanical performance, and application of the fibers in portable wearable equipment is facilitated; the method is simple in preparing process, a high temperature is not needed, the preparing cost is low, the preparing scale of the thermoelectricity fibers can be controlled according to actual production and living demands, and the preparing method has important significance in the development of the wearable electronic equipment.

Description

technical field [0001] The invention belongs to the technical field of graphene fiber preparation, in particular to a preparation method of p-type and n-type graphene thermoelectric fibers. Background technique [0002] In recent years, electronic products and smart textiles are developing towards wearable and miniaturized products. In the process, the demand for energy supply systems for portable electronic products is increasing. The current energy supply system mainly focuses on batteries, generators, and supercapacitors. However, batteries need to be replaced or recharged constantly, while traditional generators need to rely on mechanical motion to generate electricity, while supercapacitors have the disadvantages of low energy density, high price, and the need for repeated charging, so these energy supply systems are not suitable for tiny wearable electronic devices. Thermoelectric materials and wearable thermoelectric devices based on their assembly are very suitable...

AI Technical Summary

Problems solved by technology

[0004] However, traditional thermoelectric devices are made of a single p-type or n-type graphene fiber, and there is currently no continuous and complete preparation method for p-type and n-type graphene fibers

The continuous materials between p-type and n-type phases are usually connected by solder or adhesive, which has poor flexibility, continuity and mechanical properties, which is not conducive to the application in portable wearable devices.

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