Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing p-type filling type skutterudite compound thermoelectric material

A thermoelectric material and filling technology, which is applied in the field of preparation of filled skutterudite thermoelectric compounds, can solve the problems of prolonging the preparation period and decreasing the thermoelectric performance, and achieves the effects of reducing energy consumption, reducing preparation cost and fine grain structure.

Inactive Publication Date: 2011-06-08
WUHAN UNIV OF TECH
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to further shorten the preparation cycle, some people use the strip casting method to pour the melt on the rotating water-cooled copper roller, and obtain 10 by controlling the pouring amount and the speed of the copper roller. 2 ~104K / s cooling rate, control the cooling rate of the strips obtained (2°C / min between 700°C and 500°C), and obtain strips whose main phase is filled skutterudite. The strips obtained by this method There is often a small amount of second phase FeSb in the 2 and Sb, making the thermoelectric performance decrease
Because of this, the inventor of this patent later proposed an improved process, which is to grind and press the obtained strips before sintering. The sintering temperature is 953K~1193K, and the sintering time is 3h, which makes the preparation cycle longer.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing p-type filling type skutterudite compound thermoelectric material
  • Method for preparing p-type filling type skutterudite compound thermoelectric material
  • Method for preparing p-type filling type skutterudite compound thermoelectric material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 Shown, a kind of preparation method of p-type filled type skutterudite compound thermoelectric material, it comprises the steps:

[0026] 1) With high-purity granular Ce, Fe and Sb as the starting reaction raw materials, the reaction raw materials are formulated according to the chemical formula CeFe 4 Sb 12.1 (MFe 4-x co x Sb 12+y, M is Ce, x=0, y=0.1) weighing in an Ar gas glove box, a total of 20g; high-purity granular Ce, Fe and Sb are mixed, packaged, and then pressed into a columnar block under 300MPa pressure;

[0027] The purity of high-purity granular Ce is 99.0% (mass); the purity of high-purity granular Fe is 99.99% (mass), and the purity of high-purity granular Sb is 99.999% (mass);

[0028] 2) Put the obtained columnar block into a quartz glass tube with an opening at one end and a small hole with a diameter of 0.3-1.0 mm at the other end, and then put the quartz glass tube into a single-roller quenching, melting, spinning and spinning...

Embodiment 2

[0036] A method for preparing a p-type filled skutterudite compound thermoelectric material, comprising the steps of:

[0037] 1) With high-purity granular Ce, Fe, Co and Sb as the starting reaction raw materials, the reaction raw materials are formulated according to the chemical formula CeFe 3 CoSb 12.3 (MFe 4-x co x Sb 12+y , M is Ce, x=1, y=0.3) weighed in an Ar gas glove box, and the reaction raw materials totaled 20g; high-purity granular Ce, Fe, Co and Sb were mixed, and then pressed into a columnar block under a pressure of 300MPa body;

[0038] The purity of high-purity granular Ce is 99.0% (mass); the purity of high-purity granular Fe is 99.99% (quality), the purity of high-purity granular Co is 99.99% (quality), and the purity of high-purity granular Sb is 99.999% (quality);

[0039] 2) Put the obtained columnar block into a quartz glass tube with an opening at one end and a small hole with a diameter of 0.3 to 1.0 mm at the other end, and then put the quartz ...

Embodiment 3

[0047] A method for preparing a p-type filled skutterudite compound thermoelectric material, comprising the steps of:

[0048] 1) Using high-purity granular Ce, Fe, Co and Sb as the starting reaction raw materials, the reaction raw materials are formulated according to the chemical formula CeFeCo 3 Sb 13 (MFe 4-x co x Sb 12+y , M is Ce, x=3, y=1.0,) weighed in an Ar gas glove box, the total amount of reaction raw materials is 20g; high-purity granular Ce, Fe, Co and Sb are mixed, and then pressed into a column under a pressure of 400MPa Block;

[0049] The purity of high-purity granular Ce is 99.0% (mass); the purity of high-purity granular Fe is 99.99% (quality), the purity of high-purity granular Co is 99.99% (quality), and the purity of high-purity granular Sb is 99.999% (quality);

[0050] 2) Put the obtained columnar block into a quartz glass tube with an opening at one end and a small hole with a diameter of 0.3-1.0 mm at the other end, and then put the quartz glas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of new energy materials, and particularly relates to a method for preparing filling type skutterudite thermoelectric compound. A method for preparing the p-type filling type skutterudite compound thermoelectric material comprises the following steps: firstly, taking high-purity granule type M, Fe, Co and Sb as starting reaction materials, weighing reaction raw materials in an Ar gas glove box according to the chemical formula MFe4-xCoxSb12+y, wherein 0<=x<=3, 0<=y<=1.0, mixing the high purity granule type M, Fe, Co and Sb, then, pressing into columnar blocksunder the pressure of 300 to 400MPa, secondly, melting columnar blocks, swinging melted welding flux in argon atmosphere, obtaining belt-shaped products, thirdly, sintering in vacuum through a discharge plasma sintering method after coarsely grinding and pressing the belt-shaped products tightly, and obtaining single-phase compact p-type filling type skutterudite compound thermoelectric material.The method for preparing p-type filling type skutterudite compound thermoelectric material has the characteristics of simple technique, short reaction time, low energy consumption, excellent repeatability, and the like.

Description

technical field [0001] The invention belongs to the field of new energy materials, and in particular relates to a preparation method of a filled skutterudite thermoelectric compound. Background technique [0002] Thermoelectric power generation is a fully static direct power generation method that uses thermoelectric conversion materials to convert heat energy into electrical energy. It has the advantages of compact structure, reliable performance, no noise during operation, no wear, no leakage, and flexible movement. It can generate potential, which plays an important role in the fields of military, aerospace, medicine, and microelectronics. As energy and environmental issues become increasingly prominent, thermoelectric batteries, as a green energy technology with a wide range of adaptability and environmental protection, have attracted more and more attention. focus on. [0003] The performance of thermoelectric materials is measured by the dimensionless thermoelectric p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C12/00C22C1/04H01L35/18H10N10/853
Inventor 唐新峰鄢永高李涵郭全胜谭刚健张清杰
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com