Silver telluride nanowire flexible thermoelectric film welded at room temperature and preparation method thereof

A technology of tellurium nanowires and thermoelectric thin films, which is applied in the field of flexible thermoelectric thin films of silver telluride nanowires and its preparation, can solve the problems of low electrical conductivity and power factor of thin films, and achieve the advantages of connection, improvement of electrical conductivity and power factor, The effect of flexibility improvement

Active Publication Date: 2019-10-22
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the cold-pressed silver telluride nanowires are still in simple physical contact, resulting in low conductivity and power factor of the film, there are still great challenges in fabricating high-performance flexible thermoelectric films.

Method used

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  • Silver telluride nanowire flexible thermoelectric film welded at room temperature and preparation method thereof
  • Silver telluride nanowire flexible thermoelectric film welded at room temperature and preparation method thereof
  • Silver telluride nanowire flexible thermoelectric film welded at room temperature and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Take 50 ml of tellurium nanowire dispersion liquid (0.04 mg / ml) and carry out vacuum filtration to obtain a tellurium nanowire thin film with a thickness of 1 μm.

[0048] (2) Add 6 ml of the prepared silver nitrate solution (6 mg / ml) dropwise to the tellurium nanowire film, wash it with ethanol after reacting for 120 s, and finally dry it in an oven at 50 °C for 1 h to obtain the silver telluride welded at room temperature Nanowire flexible thermoelectric films.

Embodiment 2

[0050] (1) Take 50ml of silver telluride nanowire dispersion liquid (0.07mg / ml), carry out vacuum filtration, and then dry it in an oven at 50°C for 1 hour to obtain an unwelded silver telluride nanowire thermoelectric film

[0051] figure 1 and figure 2 Electron microscope images of the silver telluride nanowire flexible thermoelectric film welded at room temperature in Example 1 and the unwelded silver telluride nanowire thermoelectric film in Example 2, respectively. It can be observed that the prepared silver telluride nanowires have uniform diameter and good shape, but the flexible thermoelectric film of silver telluride nanowires welded at room temperature can be seen to form welding points between the silver telluride nanowires, and the nanowires are welded together. Welded up.

[0052] The electrical conductivity of the prepared thermoelectric films in the above-mentioned 1 and 2 embodiments at different temperatures is as follows: image 3 As shown, it can be seen...

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Abstract

The invention relates to a silver telluride nanowire flexible thermoelectric film welded at a room temperature and a preparation method thereof. The preparation method comprises the following steps: (1) tellurium nanowires are dispersed in a first solvent to obtain a tellurium nanowire dispersion; (2) a tellurium nanowire film is prepared by the tellurium nanowire dispersion; (3) silver ion salt is dissolved in a second solvent, and a silver ion salt solution is prepared; and (4) the silver ion salt and the tellurium nanowire film react, the film is cleaned after the reaction, and after drying, the silver telluride nanowire flexible thermoelectric film welded at the room temperature is obtained. The prepared flexible thermoelectric film has high conductivity and power factor.

Description

technical field [0001] The invention relates to the field of flexible thermoelectric films, in particular to a silver telluride nanowire flexible thermoelectric film welded at room temperature and a preparation method thereof. Background technique [0002] The problems of energy shortage and environmental pollution have attracted much attention in recent years, and a large part of these problems are caused by the fact that more than 50% of the energy is wasted in the form of heat, so it is very important to improve energy utilization. Thermoelectric materials can directly convert thermal energy into electricity, which can not only effectively help solve the problem of increasing global energy demand, but also help alleviate the greenhouse effect. In recent years, flexible thermoelectric materials have attracted extensive attention from scientists because they can harvest energy from body temperature and ambient temperature gradients to serve as generators to power flexible w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/16H01L35/34
CPCH10N10/852H10N10/01
Inventor 曾小亮曾祥亮孙蓉许建斌
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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