Method for quickly preparing antimony telluride thermoelectric material

A technology of thermoelectric materials and antimony telluride, which is applied in the direction of binary selenium/tellurium compounds, can solve the problems of time-consuming, difficult to control the composition, and low yield of chemical methods, and achieve low energy consumption, fast reaction speed, and repeatability Good results

Active Publication Date: 2016-11-23
WUHAN UNIV OF TECH
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the melting method and the zone melting method have the problems of difficult composition control, long preparation cycle, time-consuming, and energy consumption; the mechanical alloying method has the problem of easy introduction of impurities; the melt spinning method has the problem of being difficult to mass-produce; The chemical method has problems such as low yield and difficulty in controlling the composition

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 quickly preparing antimony telluride thermoelectric material
  • Method for quickly preparing antimony telluride thermoelectric material
  • Method for quickly preparing antimony telluride thermoelectric material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for rapidly preparing antimony telluride thermoelectric materials, the preparation method comprising the following steps:

[0031] 1) According to Sb 2 Te 3 The stoichiometric ratio of each element in takes by weighing Sb powder and Te powder, and total mass is 4g, grinds and mixes then, obtains mixed raw material;

[0032] 2) The mixed raw material obtained in step 1) is subjected to discharge plasma activation sintering, the specific process is: the mixed raw material is packed into a graphite mold with an inner diameter of 16mm for compaction, and then under the condition that the vacuum degree is less than 10Pa and no sintering pressure is applied, Heating to 400°C at a heating rate of 60°C / min, holding for 10 minutes, then rapidly pressurizing to 30MPa, holding for 10 minutes and sintering to obtain dense single-phase antimony telluride (Sb 2 Te 3 ) thermoelectric materials.

[0033] The product obtained in this embodiment is analyzed by X-ray diffract...

Embodiment 2

[0035] A method for rapidly preparing antimony telluride thermoelectric materials, the preparation method comprising the following steps:

[0036] 1) According to Sb 2 Te 3 The stoichiometric ratio of each element in takes by weighing Sb powder and Te powder, and total mass is 4g, grinds and mixes then, obtains mixed raw material;

[0037] 2) The mixed raw material obtained in step 1) is subjected to discharge plasma activation sintering, the specific process is: the mixed raw material is packed into a graphite mold with an inner diameter of 16mm for compaction, and then under the condition that the vacuum degree is less than 10Pa and no sintering pressure is applied, Heating to 410°C at a heating rate of 70°C / min, holding for 10 minutes, then rapidly pressurizing to 30MPa, holding for 10 minutes and sintering to obtain dense single-phase antimony telluride (Sb 2 Te 3 ) thermoelectric materials.

[0038] figure 2 It is the XRD spectrum of the product obtained in this emb...

Embodiment 3

[0040] A method for rapidly preparing antimony telluride thermoelectric materials, the preparation method comprising the following steps:

[0041] 1) According to Sb 2 Te 3 The stoichiometric ratio of each element in takes by weighing Sb powder and Te powder, and total mass is 4g, grinds and mixes then, obtains mixed raw material;

[0042] 2) The mixed raw material obtained in step 1) is subjected to discharge plasma activation sintering, the specific process is: the mixed raw material is packed into a graphite mold with an inner diameter of 16mm for compaction, and then the vacuum degree is less than 10Pa and the sintering pressure is not applied. Heating at a heating rate of 60°C / min to 380°C, holding for 15 minutes, then quickly pressurizing to 40MPa, holding for 5 minutes and sintering to obtain dense single-phase antimony telluride (Sb 2 Te 3 ) thermoelectric materials.

[0043] image 3 It is the XRD spectrum of the product obtained in this embodiment, and the figur...

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
particle size (mesh)aaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for quickly preparing a Sb2Te3 thermoelectric material. The method comprises the following steps that 1, Sb powder and Te powder are weighed according to the stoichiometric ratio of all elements in Sb2Te3 and then ground and mixed to be uniform to obtain a mixed raw material; 2, discharging plasma activated sintering is conducted on the mixed raw material obtained in the step 1, and the compact single-phase Sb2Te3 thermoelectric material is obtained. The antimony telluride thermoelectric material has the advantages of being high in reaction speed, efficient, economical in energy, good in repeatability and the like and has a very good application prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of new energy materials, and in particular relates to a method for rapidly preparing antimony telluride thermoelectric materials. Background technique [0002] In recent years, with the rapid population expansion and rapid industrial development, energy and environmental problems have gradually become prominent. The research, development and application of environmentally friendly and renewable new energy have become the focus of common attention all over the world. Scientists from all over the world are committed to finding efficient and non-polluting new energy conversion and utilization methods to achieve the purpose of rational and effective use of industrial waste heat and waste heat, vehicle exhaust, geothermal, solar energy, and ocean temperature differences. Since the 1990s, the study of thermoelectric conversion materials has become a research hotspot in material science. [0003] Th...

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 Applications(China)
IPC IPC(8): C01B19/04
Inventor 唐新峰姚振国鲁强兵黎萌苏贤礼鄢永高
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap