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Laminated metal chalcogenide/carbon nanotube flexible compound film material of highly ordered structure and preparation

A carbon nanotube thin film and chalcogenide technology, which is applied in the coating process of metal materials, carbon compounds, non-metallic elements, etc., can solve the problems of application limitations, layered two-dimensional materials are difficult to prepare in large quantities, and achieve improved electrical properties , High crystallinity, strong binding effect

Active Publication Date: 2017-05-31
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of application limitations caused by the intrinsic brittleness of layered metal chalcogenides, the purpose of the present invention is to provide a highly ordered structure of self-supporting layered metal chalcogenides (LMC) and carbon nanotubes (CNTs) flexible The structural design and preparation method of composite thin film materials. The composite material has very broad application prospects in the fields of flexible thermoelectric energy conversion devices, micro sensors and temperature control elements. This method solves the problem that layered two-dimensional materials are difficult to prepare in large quantities

Method used

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  • Laminated metal chalcogenide/carbon nanotube flexible compound film material of highly ordered structure and preparation
  • Laminated metal chalcogenide/carbon nanotube flexible compound film material of highly ordered structure and preparation
  • Laminated metal chalcogenide/carbon nanotube flexible compound film material of highly ordered structure and preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The LMC / CNTs flexible composite thermoelectric thin film material of the present invention and its preparation method adopt Bi 2 Te 3 / CNTs thermoelectric composite thin film material to illustrate the implementation of the case. A highly ordered flexible self-supporting bismuth telluride (Bi 2 Te 3 ) / carbon nanotubes (CNTs) composite thermoelectric film material, the composite material includes an ultra-thin CNTs film substrate and Bi uniformly deposited on its surface 2 Te 3 Thermoelectric thin film forms a three-dimensional network structure with nanoporous structure and highly conductive channels. Furthermore, thanks to Bi 2 Te 3 The layered crystallographic structure characteristics of the crystal grain, the (00l) crystal surface layer is connected by Te-Te van der Waals force, so it is very easy to slip along the crystal direction and generate twins. The present invention uses this A unique slip mechanism, when the material is bent and deformed, slips and ...

Embodiment 2-7

[0075] Prepared as in Example 1, the difference is that the coating time is different under the condition of 400°C in the high vacuum magnetron sputtering system, which are 30s, 75s, 120s, 300s, 600s and 900s respectively, and the final Bi 2 Te 3 / CNTs thin film composites were characterized for their morphology and structure.

Embodiment 8-9

[0077] Prepare as in Example 1, as Figure 10 As shown, the difference lies in the deposition of different LMC materials at 400°C in a high-vacuum magnetron sputtering system, where (a) is Bi 2 Te 3 The transmission photo (b) is Bi 2 Se 3 The scanned photo of ; (c) is Sb 2 Te 3 It is a transmission photo, and the above three composite materials all show an ordered structure, which fully demonstrates that the composite material with a high and low ordered structure of the present invention is widely applicable to metal chalcogenides.

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Abstract

The invention belongs to the field of composite materials and in particular relates to a laminated metal chalcogenide (LMC) / carbon nanotube (CTNs) flexible compound film material of a highly ordered structure and a preparation method thereof. The composite material comprises an ultrathin self-supporting (transparent) CNTs film substrate and an LMC film which uniformly wraps the surface thereof to form the flexible composite film material which has a nanoscale porous structure and a three-dimensional network structure of a high electric channel. The preparation method comprises the following steps: providing an alloy bracket for bearing a self-supporting CNTs film and cleaning the carried CNTs film under a heating condition with plasma; and preparing the LMC / CNTs composite functional film material from the pre-treated CNTs film at an air pressure of 0.2-2Pa and at a temperature of 30-800 DEG C by virtue of a magnetron sputtered deposition technology. According to the material provided by the invention, a crispy laminated metal chalcogenide functional two-dimensional (2D) material and one-dimensional (1D) CNTs are effectively connected to form a three-dimensional (3D) network structure of structural flexibility.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to the structural design and preparation method of a layered metal chalcogenide (LMC) and carbon nanotube (CNTs) flexible composite film material with a highly ordered structure. 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, which are two different forms of energy, and can make full use of waste heat and waste heat in daily production and life to generate electricity. Important research content in the environmental science and technology project. When the siz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/168C23C14/35C23C14/06
CPCC01P2002/30C01P2002/72C01P2002/80C01P2004/03C01P2006/40C23C14/0036C23C14/0623C23C14/352
Inventor 邰凯平靳群乔吉祥赵洋毛鹏燕姜辛
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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