Cellulose paper/Bi2Te3 thermoelectric thin-film composite material and preparation method thereof

A cellulose paper and thermoelectric film technology, applied in the field of composite materials, can solve problems such as low melting point and easy change of components, and achieve the effects of improving thermoelectric performance, good ability to retard crack growth, and good flexibility.

Active Publication Date: 2016-07-20
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Problems solved by technology

However, inorganic thermoelectric materials are generally covalently bonded semiconductor materials, which have intrinsic brittleness, low melting point, and

Method used

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  • Cellulose paper/Bi2Te3 thermoelectric thin-film composite material and preparation method thereof
  • Cellulose paper/Bi2Te3 thermoelectric thin-film composite material and preparation method thereof
  • Cellulose paper/Bi2Te3 thermoelectric thin-film composite material and preparation method thereof

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Embodiment Construction

[0034] In the specific implementation process, the cellulose paper of the present invention / Bi 2 Te 3 Thermoelectric thin film composites comprising a cellulose paper substrate with Bi uniformly deposited on its surface 2 Te 3 Thermoelectric thin film layers to form cellulose paper-Bi 2 Te 3 Thermoelectric thin film layer structure. Among them, the thickness of the cellulose paper is 50-100 μm, and the cellulose paper is composed of a large number of cellulose fibers with randomly distributed orientations and diameters ranging from hundreds of nanometers to 10 microns (generally 0.5-10 μm). The fiber length is 100-500 μm, and has good bending resistance and flexibility. The grain size of the film layer deposited on the cellulose paper can vary in the range of 90-520nm according to the deposition temperature, the crystal quality is high, there is no observable nano-hole structure and other defects, and the composition is uniform and adjustable. Bi 2 Te 3 The nominal thi...

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Abstract

The invention relates to the field of composite materials, in particular to a cellulose paper/Bi2Te3 (bismuth telluride) thermoelectric thin-film composite material and a preparation method thereof. The composite material comprises a cellulose paper substrate and a Bi2Te3 thermoelectric thin-film layer, wherein the Bi2Te3 thermoelectric thin-film layer is evenly deposited on the surface of the cellulose paper substrate; the thickness of cellulose paper is 50-100 microns; and the nominal thickness of the Bi2Te3 thermoelectric thin-film layer is 5-10 microns. The cellulose paper/thermoelectric thin-film composite material is prepared by an unbalanced magnetron deposition technology, has very high thermoelectric energy conversion efficiency, demonstrates good flexibility and is a flexible thermoelectric energy conversion material with an application prospect. The deposited thermoelectric material is high in crystal quality and has a compact structure of nanoscale grains; the thickness and the components are uniform and adjustable; the thermoelectric properties are close to those of a commercial block material; and the composite material can be applied to the field of a flexible energy device, a miniature sensor, a temperature control component and the like.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a cellulose paper / Bi 2 Te 3 A (bismuth telluride) thermoelectric thin film composite material and a preparation method thereof, the composite material can be used as a flexible thermoelectric energy conversion device, a micro sensor and the like. Background technique [0002] In recent years, as the imbalance between energy supply and economic development has become prominent, the energy crisis and environmental pollution have become increasingly serious worldwide. "Energy saving and carbon reduction" and the search for clean energy technologies are issues of concern to all countries today. Thermoelectric materials are advanced functional semiconductor materials that can convert heat and electricity into two different forms of energy. They can make full use of waste heat in daily production and life to generate electricity. Important research content in the science and techno...

Claims

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Application Information

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IPC IPC(8): H01L35/14H01L35/16H01L35/34
CPCH10N10/851H10N10/852H10N10/01
Inventor 邰凯平雷浩靳群乔吉祥史文博姜辛
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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