Composite thermoelectric material and preparation method thereof

A technology of thermoelectric material and composite powder, which is applied in the direction of lead wire material of thermoelectric device and the manufacture/processing of thermoelectric device. It can solve the problems of high cost, complicated process and environmental pollution, and achieve good thermoelectric performance and broad market prospect. , the effect of simple process

Pending Publication Date: 2019-09-20
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a composite thermoelectric material and its preparation method, aiming at solving the problems of environmental pollution, high cost, complicated process and the preparation of composite thermoelectric material thermoelectric materials in the existing composite thermoelectric material preparation method. poor performance

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  • Composite thermoelectric material and preparation method thereof
  • Composite thermoelectric material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0051] (1) Ingredients: First, 20.0 g of zirconia balls with a diameter of 2 mm and 0.6 g of MWCNT (commercially available carbon nanotubes) were added to a zirconia ball mill jar with a volume of 100 mL. After mixing evenly, 2 g of FBDPPV polymer was added. After sealing the ball mill jar, put it into a ball mill for ball milling.

[0052] (2) Ball milling: start the ball mill, and set the ball milling process parameters, the ball milling process parameters are as follows: firstly adjust the rotating speed to 150rpm for 40min; then adjust the rotating speed to 550rpm for 5min.

[0053] (3) Centrifugation and washing: after ball milling, transfer the balls and products in the ball mill pot to a beaker, add deionized water and stir, then use tweezers to take out the zirconia balls from the beaker, and then remove the zirconia balls from the beaker. The black product was washed with deionized water and centrifuged, and the washing and centrifugation steps were repeated until the...

Embodiment 2

[0064] (1) Ingredients: First, add 30g of zirconia balls with a diameter of 2mm and 0.6g of MWCNT into a zirconia ball mill with a volume of 100mL. After mixing evenly, add 4g of FBDPPV polymer, seal the ball mill and put it into a ball mill ball milling.

[0065] (2) Ball milling: start the ball mill, and set the ball milling process parameters. The ball milling process parameters are as follows: first adjust the speed to 150 rpm for 50 minutes, then adjust the speed to 550 rpm for 10 minutes.

[0066] (3) Centrifugation and washing: After ball milling, transfer the balls and products in the ball mill pot to a beaker, add deionized water and stir, then use tweezers to take out the zirconia balls from the beaker, and then clean the black balls in the beaker. The product was washed with deionized water and centrifuged, and the washing and centrifugation steps were repeated until the upper layer solution in the centrifuge tube was colorless.

[0067] (4) Drying: put the centrif...

Embodiment 3

[0070] (1) Ingredients: First, add 20g of zirconia balls with a diameter of 2mm and 0.8g of MWCNT into a zirconia ball mill with a volume of 100mL. After mixing evenly, add 2g of FBDPPV polymer, seal the ball mill and put it into a ball mill ball milling.

[0071] (2) Ball milling: turn on the ball mill, and set the ball milling process parameters. The ball milling process parameters are as follows: first adjust the speed to 300 rpm for 40 minutes, then adjust the speed to 750 rpm for 15 minutes.

[0072] (3) Centrifugation and washing: after ball milling, transfer the balls and products in the ball mill tank to a beaker, add deionized water and stir, then use tweezers to take out the zirconia balls from the beaker, and then remove the zirconia balls from the beaker. The black product was washed with deionized water and centrifuged, and the washing and centrifugation steps were repeated until the upper layer solution in the centrifuge tube was colorless.

[0073] (4) Drying: ...

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Abstract

The invention discloses a composite thermoelectric material and a preparation method thereof. The method for preparing the composite thermoelectric material comprises the steps of: adding carbon nanotubes and polyfluorobenzodifurandione to a ball mill for ball milling to obtain a composite powder; and subjecting the composite powder to cold pressing to obtain the composite thermoelectric material. The preparation method of the composite thermoelectric material of the invention does not use an organic solvent in the preparation process, and is friendly to environment, low in cost, simple in process, and suitable for large-scale industrial production. The prepared composite thermoelectric material has good thermoelectric performance.

Description

technical field [0001] The invention relates to the field of thermoelectric materials, in particular to a composite thermoelectric material and a preparation method thereof. Background technique [0002] For a long time, energy has supported human industrial production and daily life. The current energy mainly comes from fossil fuels, which are burned to generate thermal energy, and through a series of transformations, they are finally converted into electrical energy for easy use and storage. Among them, thermoelectric materials are energy materials that can directly convert heat energy and electric energy. Therefore, the preparation of a high-performance thermoelectric material will save a lot of fossil fuels, which is of great significance to environmental protection and sustainable development. [0003] As a new type of energy material with great potential, thermoelectric materials have been applied in many fields. Because thermoelectric materials and thermoelectric d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/22H01L35/24H01L35/34
CPCH10N10/856H10N10/855H10N10/01
Inventor 张嘉恒麦成康王振元王滨燊
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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