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A thermoelectric conversion method

A technology of thermoelectric conversion and thermoelectric current, which is applied in the manufacture/processing of thermoelectric devices, junction lead-out materials of thermoelectric devices, electrical components, etc. The effect of reducing complexity

Active Publication Date: 2020-05-05
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a thermoelectric conversion method to solve the problem in the prior art that the thermoelectric conversion method must rely on a special temperature environment and has limitations in use

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Embodiment Construction

[0026] As mentioned in the background technology section, the thermoelectric conversion methods in the prior art all limit the application scenarios of the thermoelectric conversion method and the use of materials capable of realizing thermoelectric conversion.

[0027] The inventors found that the reason for the above-mentioned problems in the prior art is that the thermoelectric conversion methods in the prior art all rely on special temperature environments, such as temperature gradients or variable temperature environments, and have relatively high requirements on the structure of the material itself. In the actual production process, thermoelectric conversion based on the Seebeck effect requires an additional system to obtain a temperature gradient, and the applicable materials for thermoelectric conversion based on the pyroelectric effect are limited, which limits the application of thermoelectric conversion.

[0028] Based on this, the present invention provides a thermo...

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Abstract

The present application provides a thermoelectric conversion method, the thermoelectric conversion method includes: providing a sample, the material of the sample is a dielectric material; applying a force to the sample to generate a strain gradient inside the sample, based on the flexoelectric effect and conductance within the material, generating a thermoelectric current. The thermoelectric conversion method provided by the present invention is based on the coupling of the flexoelectric effect and the conductance, and has nothing to do with the change of the ambient temperature or the temperature gradient. Inhomogeneous strains are generated in the sample material by methods such as bending, thereby generating a flexoelectric field, causing the conductance of the sample material, and generating a thermoelectric current. Compared with the methods based on the Seebeck effect or pyroelectric effect in the prior art, the present invention The provided thermoelectric conversion method can generate thermoelectric current without relying on temperature gradient or temperature change, so that it can adapt to more materials, has lower requirements on the temperature environment of thermoelectric conversion, and can expand the application range of thermoelectric conversion.

Description

technical field [0001] The invention belongs to the application field of functional materials, and mainly relates to a thermoelectric conversion method. Background technique [0002] With the emergence of worldwide energy crisis, research on energy recycling has been carried out for decades. In the process of energy use, more than 40% are dissipated and lost in the form of heat energy. If this part of the dissipated heat energy is collected and converted into electrical energy, energy recycling can be realized to a certain extent. The traditional thermoelectric conversion technology is based on the Seebeck effect. The Seebeck effect is to realize the macroscopic directional diffusion of charged particles through the temperature difference between the two ends of the material, thereby realizing thermoelectric conversion. Materials that realize thermoelectric conversion based on the Seebeck effect are thermoelectric materials in the traditional sense. Ideal thermoelectric m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L35/34H01L35/18H02N11/00H10N10/01H10N10/853
CPCH02N11/002H10N10/853H10N10/01
Inventor 初宝进陈攀
Owner UNIV OF SCI & TECH OF CHINA
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