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Light flexible paper-based 1T-phase tungsten disulfide/carbon nanotube composite thermoelectric material and preparation method thereof

A carbon nanotube composite, tungsten disulfide technology, applied in the direction of thermoelectric device node lead-out material, thermoelectric device manufacturing/processing, etc., can solve problems such as unfavorable ZT value, low conductivity, etc. The effect of reducing thermal conductivity and increasing the Seebeck coefficient

Active Publication Date: 2020-03-24
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, 2H phase tungsten disulfide has extremely low conductivity at room temperature, which is not conducive to the improvement of ZT value, so it is not suitable for thermoelectric materials

Method used

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  • Light flexible paper-based 1T-phase tungsten disulfide/carbon nanotube composite thermoelectric material and preparation method thereof
  • Light flexible paper-based 1T-phase tungsten disulfide/carbon nanotube composite thermoelectric material and preparation method thereof
  • Light flexible paper-based 1T-phase tungsten disulfide/carbon nanotube composite thermoelectric material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for preparing a lightweight flexible cellulose paper-based 1T phase tungsten disulfide / carbon nanotube composite thermoelectric material, characterized in that it comprises the following steps:

[0040] (1) 15mg of single-walled carbon nanotube powder is added to 30ml of sodium dodecylbenzenesulfonate aqueous solution (concentration is 1%), and ultrasonic dispersion is carried out by an ultrasonic cell breaker to obtain a stable dispersion of carbon nanotubes in water liquid;

[0041] Dissolve 0.8g of ammonium metatungstate hydrate and 0.8g of thiourea in 30ml of water, stir magnetically at room temperature until completely dissolved, then add 0.28g of oxalic acid dihydrate and stir vigorously until completely dissolved;

[0042] (2) Mix the above two solutions, stir at room temperature for 15 minutes, then transfer to a 100ml reactor lined with polytetrafluoroethylene, and react at 220°C for 24 hours; after the reaction, the reactor is naturally After cooling...

Embodiment 2

[0051] A method for preparing a lightweight flexible cellulose paper-based 1T phase tungsten disulfide / carbon nanotube composite thermoelectric material, characterized in that it comprises the following steps:

[0052] (1) Add 15 mg of single-walled carbon nanotube powder to 30 ml of cetyltrimethylammonium bromide aqueous solution (concentration is 0.5%), and carry out ultrasonic dispersion by an ultrasonic cell disruptor to obtain stably dispersed carbon nanotubes water dispersion;

[0053] Dissolve 0.8g of ammonium metatungstate hydrate and 0.8g of thiourea in 30ml of water, stir magnetically at room temperature until completely dissolved, then add 0.28g of oxalic acid dihydrate and stir vigorously until completely dissolved;

[0054] (2) Mix the above two solutions, stir at room temperature for 15 minutes, then transfer to a 100ml reactor lined with polytetrafluoroethylene, and react at 220°C for 24 hours; after the reaction, the reactor is naturally After cooling to room ...

Embodiment 3

[0063] A method for preparing a lightweight flexible cellulose paper-based 1T phase tungsten disulfide / carbon nanotube composite thermoelectric material, characterized in that it comprises the following steps:

[0064] (1) 15 mg of single-walled carbon nanotube powder is added to 30 ml of Triton X-100 aqueous solution (concentration is 2%), and ultrasonically dispersed by an ultrasonic cell disruptor to obtain a stably dispersed carbon nanotube aqueous dispersion;

[0065] Dissolve 0.8g of ammonium metatungstate hydrate and 0.8g of thiourea in 30ml of water, stir magnetically at room temperature until completely dissolved, then add 0.28g of oxalic acid dihydrate and stir vigorously until completely dissolved;

[0066] (2) Mix the above two solutions, stir at room temperature for 15 minutes, then transfer to a 100ml reactor lined with polytetrafluoroethylene, and react at 220°C for 24 hours; after the reaction, the reactor is naturally After cooling to room temperature, the obt...

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Abstract

The invention belongs to the technical field of new energy thermoelectric conversion materials, and particularly relates to a light flexible and high-thermoelectric-conversion-efficiency composite thermoelectric material taking common cellulose paper as a substrate and a preparation method of the composite thermoelectric material. According to the preparation method, carbon nanotubes dispersed bya surfactant are used as a molecular template, and 1T-phase tungsten disulfide nanosheets with metalloid properties are grown on the surfaces of the carbon nanotubes through a concise and efficient hydrothermal synthesis method, so that 1T-phase tungsten disulfide nanosheet / carbon nanotube composite powder is obtained. The novel cellulose paper-based 1T-phase tungsten disulfide / carbon nanotube composite thermoelectric material is obtained by taking common cellulose paper with high water absorption as a substrate material and combining a roller press calendering and chemical doping method. According to the prepared composite thermoelectric material, the flexibility of the cellulose paper is reserved, meanwhile, the characteristics of all components of the composite material are combined, the excellent thermoelectric performance is obtained, and a new thought and direction are developed for development and application of high-performance thermoelectric materials in the field of new energy.

Description

technical field [0001] The invention belongs to the technical field of new energy thermoelectric conversion materials, and relates to a flexible, lightweight and high thermoelectric conversion efficiency composite thermoelectric material based on common cellulose paper and a preparation method thereof. Background technique [0002] In the context of the current worldwide energy crisis and increasingly severe environmental protection situation, people have paid extensive attention to finding clean and safe new energy and improving the efficiency of existing energy. A thermoelectric generator is a technology that uses the thermoelectric effect of materials, usually using waste heat or solar energy as a heat source to generate electricity. Compared with traditional power generation technology, it has the advantages of no pollution, no noise, no wear, small size, fast response, high reliability and long life. Thermoelectric materials are the core key materials for thermoelectri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/12H01L35/14H01L35/22H01L35/34H10N10/85H10N10/01H10N10/851H10N10/855
CPCH10N10/85H10N10/851H10N10/855H10N10/01
Inventor 朴明星褚金李朝龙王啸张恒史浩飞
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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