EHD printing preparation method of flexible thermoelectric device

Abstract

The invention relates to an EHD printing preparation method of a flexible thermoelectric device, which is based on EHD printing equipment, adopts a conductive polymer PEDOT: PSS dispersion liquid as aprinting material, and comprises the following steps: 1) adjusting the surface tension of the conductive polymer PEDOT: PSS dispersion liquid by using a surfactant; 2) moving the PEDOT: PSS to an EHDprinting device; 3) performing parallel linear printing on a flexible substrate subjected to hydrophilic treatment; (4) replacing printing ink, specifically, replacing PEDOT: PSS with conductive ink,and sequentially connecting the PEDOT: PSS distributed in parallel in a linear mode through the conductive ink; 5, drying to obtain the flexible thermoelectric device; compared with a traditional thermoelectric device preparation method, the EHD printing preparation method has the advantages of being high in precision, small in size, low in energy consumption, low in cost and easy to operate, large-scale device preparation can be directly carried out, and the unit area output power of the thermoelectric device is greatly improved.

Description

Technical field [0001] The present invention relates to the technical field of 3D printing, in particular to a method for preparing EHD printing of flexible thermoelectric devices. Background technique [0002] With the development of wearable electronic devices, the issue of how to power them has gradually attracted people's attention. Obtaining energy directly from the environment or the human body to power electronic devices, and constructing a self-driving energy system is an effective idea. Thermoelectric materials, also known as thermoelectric materials, are functional materials that achieve direct conversion between thermal energy and electrical energy through the transport of carriers (holes or electrons) inside a solid. The activity and metabolism of the human body will continue to generate heat, which will cause a certain temperature difference between the skin and the external environment. This part of the heat energy can be converted into electrical energy through th...

AI Technical Summary

Problems solved by technology

At present, the traditional thermoelectric devices are mainly cutting and inserting methods, which are generally applicable to inorganic thermoelectric materials, which need to be processed by means of high energy consumption such as hot pressing and melting. In addition, inorganic thermoelectric materials are generally bulk materials, which are constructed by Thermoelectric devices tend to be large in size and difficult to power wearable electronics due to their rigidity and density.

However, there is no report on the preparation of thermoelectric devices by EHD printing method.

Images