A preparation method of flexible n-type silver telluride nanowire thermoelectric film

Abstract

The invention discloses a method for preparing a flexible N-type silver telluride nanowire thermoelectric film. The method comprises the following steps: mixing the silver telluride nanowire with polyvinylpyrrolidone, and ultrasonically dispersing in a solvent to obtain the dispersion of the silver telluride nanowire liquid; under the condition of vacuum filtration, evenly drop-coat the silver telluride nanowire dispersion on the glass fiber filter membrane, and dry it in vacuum at 75°C to obtain the silver telluride nanowire thin film adhered to the glass fiber filter membrane sandwich it between two pieces of copy paper, place it in a tablet press, and then use a brush to remove the glass fiber filter membrane fragments on the back of the silver telluride nanowire film, and place it in a vacuum oven for annealing to obtain the target product. The invention is simple and controllable, has short preparation cycle, safety and pollution-free, low energy consumption, and the obtained thin film has excellent thermoelectric performance and good flexibility, and flexible thermoelectric thin films of different sizes and shapes can be flexibly prepared according to the size and shape of the glass fiber membrane. have a broad vision of application.

Description

Technical field: [0001] The invention relates to the technical field of new energy materials, in particular to a method for preparing a flexible N-type silver telluride nanowire thermoelectric film. Background technique: [0002] Thermoelectric materials can directly convert electric energy and heat energy. Thermoelectric power generation devices and refrigeration devices made of thermoelectric materials have the characteristics of compact structure, no noise, no pollution during operation, and waste energy can be recycled. They are used in military, medical, aerospace , microelectronics and even household appliances and other fields have broad application prospects. Compared with commercial bulk thermoelectric materials, flexible thermoelectric materials have unique advantages such as bendability, small weight, simple process, and wide application range. In recent years, they have attracted more and more attention from the scientific research community and the business comm...

AI Technical Summary

Problems solved by technology

But so far, flexible thermoelectric materials based on silver telluride are prepared from composite materials containing silver telluride nanoparticles, the preparation process is complicated, the cost is high, and the flexibility is poor.

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