A method for the ultra-fast preparation of thermoelectric devices in one step from simple powders as starting materials

An ultra-fast technology for thermoelectric devices, applied in the field of rapid preparation of thermoelectric devices, can solve the problems of low yield and low utilization rate of raw materials, achieve high printing efficiency, overcome low utilization rate of raw materials, and shorten the synthesis time.

Active Publication Date: 2019-05-24
WUHAN UNIV OF TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for ultra-fast preparation of thermoelectric devices in one step from simple powder as the starting material in view of the shortcomings of the above-mentioned prior art, which greatly shortens the synthesis time of thermoelectric materials and effectively avoids the It is a cumbersome intermediate link in the traditional thermoelectric device manufacturing process, and at the same time overcomes the problems of low yield and low utilization rate of raw materials in the traditional welding assembly process

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  • A method for the ultra-fast preparation of thermoelectric devices in one step from simple powders as starting materials
  • A method for the ultra-fast preparation of thermoelectric devices in one step from simple powders as starting materials
  • A method for the ultra-fast preparation of thermoelectric devices in one step from simple powders as starting materials

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Embodiment 1

[0096] One-step ultrafast preparation of n-type Bi from simple powder as starting material using this device 2 Te 2.7 Se 0.3 , p-type Bi 0.5 Sb 1.5 Te 3 A method for a thermoelectric device, comprising the steps of:

[0097] 1) Preparation of raw materials: according to the p-type thermoelectric compound Bi 0.5 Sb 1.5 Te 3 The stoichiometric ratio of each element in the prepared elemental powder Bi powder, Sb powder, Te powder (both 300 mesh, 4N) total 1Kg, as in the ball mill tank filled with Ar gas, carry out 2h sufficient mixing on the horizontal ball mill, Obtain the raw material powder of the p-type thermoelectric compound; at the same time, according to the n-type thermoelectric compound Bi 2 The stoichiometric ratio of each element in Te2.7Se0.3 prepares a total of 1Kg of elemental powder Bi powder, Te powder, and Se powder (both 300 mesh, 4N). As for the ball mill tank filled with Ar gas, it is carried out on a horizontal ball mill Fully mixed for 2 hours to o...

Embodiment 2

[0106]The method for preparing n-type SnSe and p-type SnTe thermoelectric devices ultra-fast in one step using the device as a starting material comprises the following steps:

[0107] 1) Preparation of raw materials: According to the stoichiometric ratio of each element in the p-type thermoelectric compound SnTe, prepare a total of 1Kg of elemental powder Sb powder and Te powder (both 300 mesh, 4N). As for the ball mill tank filled with Ar gas, in the horizontal Fully mix on the ball mill for 2 hours to obtain the raw material powder of the p-type thermoelectric compound; at the same time, prepare the elemental powder Sn powder and Se powder (both 300 mesh, 4N) according to the stoichiometric ratio of each element in the n-type thermoelectric compound SnSe , as for the ball mill tank filled with Ar gas, fully mix it on a horizontal ball mill for 2h to obtain the raw material powder of n-type thermoelectric compound; and prepare electrode material Cu powder (300 mesh) and insul...

Embodiment 3

[0116] One-step ultrafast preparation of p-CeFe from simple powder as starting material 4 Sb 12 Binding n-type Co 4 Sb 12-x Te x (x=0~0.1) the method for thermoelectric device, comprises the steps:

[0117] 1) Prepare raw materials: according to p-type CeFe 4 Sb 12 The stoichiometric ratio of each element in the thermoelectric compound is prepared for each elemental powder, and fully mixed under the protection of an inert gas to obtain the raw material powder of the p-type thermoelectric compound; at the same time, according to the n-type Co 4 Sb 12- x Te x (x=0~0.1) The stoichiometric ratio of each element in the thermoelectric compound Prepare the elemental powders, and fully mix them under the protection of an inert gas to obtain the raw material powder of the n-type thermoelectric compound; and prepare Cu 50 Mo 50 Alloy electrode powder and insulating ceramic substrate;

[0118] Among them, the particle size of the electrode powder, the raw material powder of th...

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Abstract

The present invention provides a method for one-step ultra-rapid preparation of a thermoelectric device from simple powder as a starting material. The specific steps are: 1) preparing the raw material; , the electrode material is melted and solidified by laser to obtain the insulating substrate printed with the electrode layer (1); 3) On the insulating substrate obtained in step 2), according to the designed device thermoelectric arm size and distribution, generate n in situ by laser type thermoelectric compound powder and p-type thermoelectric compound powder; 4) use laser melting and solidification to obtain n-type thermoelectric arm and p-type thermoelectric arm; 5) according to the required electrode pattern and thickness, the n-type thermoelectric arm and p The electrode layer (2) is printed on the type thermoelectric arm to obtain a thermoelectric device. The invention effectively avoids the cumbersome intermediate links in the traditional thermoelectric device preparation process, and at the same time overcomes the problems of low yield rate and low raw material utilization rate in the traditional welding assembly process.

Description

technical field [0001] The invention relates to a method for ultra-rapidly preparing thermoelectric devices from simple powder as a starting material, 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 It has 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 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L35/34
CPCH10N10/01
Inventor 鄢永高陈天乐唐新峰苏贤礼吴林春毛宇吴克平
Owner WUHAN UNIV OF TECH
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