A kind of glass fiber/bi2te3 thermoelectric film composite material and preparation method thereof

Abstract

The invention relates to the field of composite materials, in particular to a glass fiber / Bi2Te3 thermoelectric film composite material and a preparation method thereof. The composite material can be used as a flexible energy device, a micro sensor and the like. The composite material includes a glass fiber matrix and a Bi2Te3 thermoelectric film layer uniformly deposited on its surface to form a core-shell structure; wherein, the diameter of the glass fiber is 5-10 μm, the thickness of the Bi2Te3 thermoelectric film layer is 1-2 μm, and the film layer The structure is dense and bonds well to the fiberglass surface. The glass fiber / Bi2Te3 thermoelectric film composite thermoelectric material prepared by non-equilibrium magnetron deposition technology, the Bi2Te3 deposition layer has a dense structure with nanoscale grains, the thickness is uniform and adjustable, and its thermoelectric performance is close to that of commercial bulk materials. Due to the scale effect of thin film materials, this fiber / thermoelectric composite material also exhibits good bending resistance, which can be applied in flexible energy devices, micro sensors and other fields.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a glass fiber / Bi 2 Te 3 A thermoelectric thin film composite material and a preparation method thereof, the composite material can be used as a flexible energy 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 material is an advanced functional semiconductor material that can convert heat and electricity into two different forms of energy without the assistance of other specific external forces or devices. It can make full use of waste heat in daily production and life to generate electricity. It is an important research content i...

AI Technical Summary

Problems solved by technology

However, thermoelectric materials are generally covalently bonded semiconductor materials, which have intrinsic brittleness, low melting point, and easy-to-change components. It is difficult to prepare thermoelectric materials with micron scale and good elastic deformation properties by ordinary physical and chemical methods.

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