Method of manufacturing thermoelectric material powder and device in superfast way

A technology of thermoelectric materials and thermoelectric devices, which is applied in the manufacture/processing of thermoelectric devices, can solve the problems of low yield rate and low utilization rate of raw materials, achieve high printing efficiency, small heat-affected area, and overcome low utilization rate of raw materials Effect

Active Publication Date: 2017-02-08
武汉新赛尔科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for rapidly preparing thermoelectric devices in view of the above-mentioned deficiencies in the prior art, by combining inkjet printing and selective laser melting 3D printing technology, and additive manufacturing technol

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  • Method of manufacturing thermoelectric material powder and device in superfast way
  • Method of manufacturing thermoelectric material powder and device in superfast way
  • Method of manufacturing thermoelectric material powder and device in superfast way

Examples

Experimental program
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Effect test

Embodiment 1

[0090] A method for ultrafast preparation of thermoelectric material powders and devices, mainly comprising the following steps (1) and (2):

[0091] Step (1): rapid preparation of p-type Bi 0.5 Sb 1.5 Te 3 n-type Bi 2 Te 2.8 Se 0.2 Thermoelectric material powder

[0092] Press Bi powder, Te powder and Se powder (all 300 mesh, 4N) into Bi 2 Te 2.8 Se 0.2 The stoichiometric ratio of each element in (n-type thermoelectric compound) is 2:2.8:0.2 Prepare a total of 1Kg as a reactant, put it into a ball mill jar, mix it evenly, press it into a cylinder with a diameter of 80mm, put it into a vacuum chamber, and use Heating the graphite sheet and igniting it from the upper end triggers a self-propagating combustion process to obtain a single-phase p-type thermoelectric material green body, grind the green body into powder (i.e. p-type thermoelectric material powder), and pass through a 400-mesh sieve for later use;

[0093] Press Bi powder, Sb powder and Te powder (all 300 m...

Embodiment 2

[0102] A method for ultrafast preparation of thermoelectric material powders and devices, mainly comprising the following steps (1) and (2):

[0103] Step (1): Rapid preparation of p-type SnTe combined with n-type SnSe thermoelectric material powder

[0104] Prepare a total of 1Kg of Sn powder and Se powder (both 300 mesh, 4N) according to the stoichiometric ratio of each element in SnSe (n-type thermoelectric compound) 1:1 as reactants, and place them in a ball mill tank filled with Ar gas. The horizontal ball mill is fully mixed for 2 hours, and the obtained uniform powder is pressed into a cylinder with a diameter of 80 mm, which is placed in a vacuum chamber, and a heated graphite sheet is used to ignite from the upper end to initiate a self-propagating combustion reaction to obtain a single-phase p-type thermoelectric Material green body, the green body is ground into powder (i.e. p-type thermoelectric material powder), passed through a 400-mesh sieve for later use;

[0...

Embodiment 3

[0114] A method for ultrafast preparation of thermoelectric material powders and devices, mainly comprising the following two steps:

[0115] (1) Ultra-fast preparation of thermoelectric material powder: according to p-type p-CeFe 4 Sb 12 The stoichiometric ratio of each element in the thermoelectric compound prepares the elemental powder of each element as a reactant, grinds and mixes it evenly, and obtains a p-type thermoelectric material powder through a self-propagating combustion reaction or a thermal explosion reaction; according to n-type Co 4 Sb 12-x Te x The stoichiometric ratio of each element in (x=0~0.1) prepares the elemental powder of each element as a reactant, grinds and mixes them evenly, and obtains an n-type thermoelectric material powder through a self-propagating combustion reaction or a thermal explosion reaction;

[0116] Step (2): rapid preparation of p-CeFe 4 Sb 12 Binding n-type Co 4 Sb 12-x Te x (x=0~0.1) the method for thermoelectric device,...

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Abstract

The invention discloses a method of manufacturing a thermoelectric material powder and a device in a superfast way. The method comprises the following steps of (1) weighing and mixing thermoelectric material composition element simple substance powders according to a stoichiometric ratio, then tabletting, and then through a self-propagating combustion reaction or a thermal explosion reaction, acquiring a thermoelectric material powder in the superfast way; (2) manufacturing a thermoelectric device in the superfast way: taking an insulation substrate, an electrode powder and the thermoelectric material powder acquired from the step (1) as starting raw materials of a selective laser fusion technology, and through three dimensional printing, manufacturing the thermoelectric device. In the invention, from a simple substance raw material of the thermoelectric material, through combining self-propagating combustion synthesis, inkjet printing and a 3D printing technology of selective laser fusion and through a material increase manufacturing technology, the thermoelectric device is printed, tedious intermediate links during a traditional thermoelectric device manufacturing technology process are avoided, simultaneously, a miniature device can be directly printed and problems that a yield and a raw material utilization rate are low in a traditional welding and assembling technology are overcome.

Description

technical field [0001] The invention relates to a method for ultrafast preparation of thermoelectric material powder and devices, which belongs to a new process for preparing thermoelectric materials and devices. Background technique [0002] Thermoelectric conversion technology includes thermoelectric refrigeration technology and thermoelectric power generation technology. The former uses the Peltier effect of materials to convert electrical energy into thermal energy, and the latter uses the Seebeck effect of materials to convert thermal energy into electrical energy. As a new all-solid-state energy conversion technology , thermoelectric devices have the advantages of long life, no maintenance and adaptability to harsh environments. Among them, thermoelectric refrigeration technology is applied to refrigeration fields that have special requirements for noise and space, such as wine cabinets and car seat cushions that use thermoelectric refrigeration technology. The cooling...

Claims

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Application Information

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IPC IPC(8): H01L35/34C22C1/05
CPCC22C1/05H10N10/01
Inventor 鄢永高唐新峰苏贤礼陈天乐吴林春毛宇吴克平
Owner 武汉新赛尔科技有限公司
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