CN105293450A - Preparation method of PbTe nano thermoelectric material - Google Patents
Preparation method of PbTe nano thermoelectric material Download PDFInfo
- Publication number
- CN105293450A CN105293450A CN201510631743.3A CN201510631743A CN105293450A CN 105293450 A CN105293450 A CN 105293450A CN 201510631743 A CN201510631743 A CN 201510631743A CN 105293450 A CN105293450 A CN 105293450A
- Authority
- CN
- China
- Prior art keywords
- preparation
- hydrazine hydrate
- ultrasonic disperse
- pbte
- deionized water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a preparation method of a PbTe nano thermoelectric material. The preparation method is a hydro-thermal synthesis method. The hydro-thermal synthesis method has the advantages that reaction conditions are easily controlled, the reaction temperature is low, the time is short, a product is high in yield, high in purity and good in crystallization, the shape and the size of the product can be controlled, and the like. As an important method for inorganic material synthesis and crystal growth, the preparation method is widely applied to preparation of nano materials. The thermoelectric merit figure of the PbTe nano thermoelectric material obtained by the preparation method is increased.
Description
Technical field
The present invention relates to field of thermoelectric material technique, provide a kind of preparation method of PbTe nano pyroelectric material.
Background technology
PbTe studies comparatively early and more ripe thermoelectric material as a kind of, and in very wide temperature range, have higher conversion efficiency of thermoelectric, be a kind of thermo-electric converting material generally used.For remote space probe, the thermogenerator of radio isotope heat supply is its power supply system unique at present, and material is successfully applied on the spacecrafts such as " traveller No. " and " Galileo Mars probes " of NASA's transmitting already, for space exploration makes a great contribution.And the thermoelectric figure of merit of PbTe thermoelectric material has reached its peak value at present, need to improve its thermoelectric figure of merit by adulterating or changing microtexture.
Summary of the invention
On above-mentioned theory basis, the invention provides a kind of preparation method of PbTe nano pyroelectric material, described preparation method is hydrothermal synthesis method.
Concrete technical scheme of the present invention is as follows:
Stoichiometrically take PbCl
2, EDETATE SODIUM is placed in small beaker, and adds NH wherein
3h
2o and deionized water, take Na
2teO
3be placed in another small beaker, ultrasonic disperse 35min and 25min, obtains Pb source and the Te source precursor solution of white opacity respectively respectively; Described Te source precursor is poured in the precursor solution of described Pb source, is heated to 65 DEG C and stirs 30min with the rotating speed of 500rpm, fully dissolve, mix; Add tensio-active agent PVP again and stir, the hydrazine hydrate (hydrazine hydrate) adding massfraction 50% continues to stir, until solution starts to become light brown; Solution obtained above is loaded in autoclave, sealing is put into 170 DEG C of vacuum drying ovens after tightening and is reacted 12h, naturally cool to room temperature, collect the lead product at the bottom of still, successively with deionized water and dehydrated alcohol repeatedly clean, ultrasonic, centrifugal, namely obtain described PbTe nano pyroelectric material powder, described centrifugation apparatus is supercentrifuge, and centrifugal rotational speed is 21000rpm.
beneficial effect
Hydrothermal synthesis method provided by the invention has easily-controlled reaction conditions, temperature of reaction is low, the time is short, products collection efficiency advantages of higher; The PbTe nano pyroelectric material obtained by described preparation method, globule size is homogeneous, pattern is regular, size about about 50nm, thermoelectric figure of merit increases.
Embodiment
Embodiment 1
Stoichiometrically take PbCl
2, EDETATE SODIUM is placed in small beaker, and adds NH wherein
3h
2o and deionized water, take Na
2teO
3be placed in another small beaker, ultrasonic disperse 35min and 25min, obtains Pb source and the Te source precursor solution of white opacity respectively respectively; Described Te source precursor is poured in the precursor solution of described Pb source, is heated to 65 DEG C and stirs 30min with the rotating speed of 500rpm, fully dissolve, mix; Add tensio-active agent PVP again and stir, the hydrazine hydrate (hydrazine hydrate) adding massfraction 50% continues to stir, until solution starts to become light brown; Solution obtained above is loaded in autoclave, sealing is put into 170 DEG C of vacuum drying ovens after tightening and is reacted 12h, naturally cool to room temperature, collect the lead product at the bottom of still, successively with deionized water and dehydrated alcohol repeatedly clean, ultrasonic, centrifugal, namely obtain described PbTe nano pyroelectric material powder, described centrifugation apparatus is supercentrifuge, and centrifugal rotational speed is 21000rpm.
After tested, the PbTe nano material globule size that obtains of described preparation method is homogeneous, pattern is regular, size is about about 50nm; When probe temperature is at 775K, ZT
max=1.1, the thermoelectricity capability of illustrative material is effectively improved.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalences done with the structure described in the claims in the present invention, feature and principle change or modify, and all should be included within the claims in the present invention scope.
Claims (7)
1. a preparation method for PbTe nano pyroelectric material, is characterized in that: described preparation method is hydrothermal synthesis method.
2. the preparation method according to claim l, is characterized in that, described preparation method comprises: 1. stoichiometrically take PbCl
2, EDETATE SODIUM is placed in small beaker, and adds NH wherein
3h
2o and deionized water, then carry out ultrasonic disperse, obtains the Pb source precursor solution of white opacity; 2. Na is taken
2teO
3be placed in another small beaker, after adding deionized water, carry out ultrasonic disperse, obtain as Te source precursor solution; 3. poured in the precursor solution of described Pb source by described Te source precursor, heated and stirred, fully dissolves, and mixes; 4. add tensio-active agent PVP and stir, adding hydrazine hydrate (hydrazine hydrate) and continue to stir, stop stirring when solution starts to become light brown; 5. load in autoclave by solution obtained above, sealing is put into vacuum drying oven after tightening and is reacted, and takes out, naturally cool to room temperature after question response, collects the lead product at the bottom of still; 6. obtained lead product is loaded in centrifuge tube, successively with deionized water and dehydrated alcohol repeatedly clean, ultrasonic, centrifugal, namely obtain described PbTe nano pyroelectric material powder.
3. preparation method according to claim 2, is characterized in that: step 1. described in the ultrasonic disperse time be 35 minutes; Step 2. described in the ultrasonic disperse time be 25 minutes.
4. preparation method according to claim 2, is characterized in that: step 3. described in heated and stirred temperature be 65 DEG C, churning time is 30min, and stirring rotator rotating speed is 500rpm.
5. preparation method according to claim 2, is characterized in that: step 4. described in the massfraction of hydrazine hydrate (hydrazine hydrate) be 50%.
6. preparation method according to claim 2, is characterized in that: step 5. described in temperature of reaction be 170 DEG C, the reaction times is 12h.
7. preparation method according to claim 2, is characterized in that: step 5. described in centrifugation apparatus be supercentrifuge, centrifugal rotational speed is 21000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510631743.3A CN105293450A (en) | 2015-09-29 | 2015-09-29 | Preparation method of PbTe nano thermoelectric material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510631743.3A CN105293450A (en) | 2015-09-29 | 2015-09-29 | Preparation method of PbTe nano thermoelectric material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105293450A true CN105293450A (en) | 2016-02-03 |
Family
ID=55191397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510631743.3A Pending CN105293450A (en) | 2015-09-29 | 2015-09-29 | Preparation method of PbTe nano thermoelectric material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105293450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217611A (en) * | 2017-12-29 | 2018-06-29 | 北京航空航天大学 | A kind of preparation method of high natrium doping lead telluride |
| CN108516526A (en) * | 2018-04-12 | 2018-09-11 | 同济大学 | A kind of high-performance PbTe based solid solution thermoelectric materials and preparation method thereof |
-
2015
- 2015-09-29 CN CN201510631743.3A patent/CN105293450A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217611A (en) * | 2017-12-29 | 2018-06-29 | 北京航空航天大学 | A kind of preparation method of high natrium doping lead telluride |
| CN108217611B (en) * | 2017-12-29 | 2019-03-29 | 北京航空航天大学 | A kind of preparation method of high natrium doping lead telluride |
| CN108516526A (en) * | 2018-04-12 | 2018-09-11 | 同济大学 | A kind of high-performance PbTe based solid solution thermoelectric materials and preparation method thereof |
| CN108516526B (en) * | 2018-04-12 | 2020-10-02 | 同济大学 | High-performance PbTe-based solid solution thermoelectric material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101656292B (en) | Preparation method for bismuth-tellurium nano-porous thermoelectric material | |
| CN103872237A (en) | Copper-sulfur-based high-performance thermoelectric material and preparation method thereof | |
| CN103928604A (en) | Method for fast manufacturing n-type bismuth telluride based high-performance thermoelectric materials | |
| CN110092418A (en) | A kind of preparation method of the copper-based sulfide semiconductor nano material of ternary | |
| CN103787283A (en) | Preparation method for Cu3SbSe4 ternary nano balls | |
| CN105293450A (en) | Preparation method of PbTe nano thermoelectric material | |
| CN105819410A (en) | Preparation method for bismuth telluride quantum point | |
| US9802833B2 (en) | Synthesis of metal oxide-based thermoelectric materials for high temperature applications | |
| JP6460351B2 (en) | Thermoelectric material and manufacturing method thereof | |
| CN110078476A (en) | A kind of Al doping BiCuSeO base thermoelectricity material and preparation method thereof | |
| CN103193207A (en) | Preparation method of one-dimensional overlong Sb2Se3 nanowire | |
| CN101723351A (en) | Method for preparing Bi2Te3/carbon nanotube composite material | |
| CN102807195B (en) | Method for preparing semi-arc Bi2Se3ultrathin nanosheets | |
| CN103787284A (en) | Method for preparing bismuth telluride nanosheet | |
| CN107910432A (en) | A kind of preparation method of powdered nano composite thermoelectric materials | |
| US9209374B2 (en) | Method for preparing and use of Sb2Te3 nanocrystals in thermoelectric materials | |
| CN108017385A (en) | A kind of preparation method of low-temperature sintering oxide pyroelectric material | |
| CN109599478A (en) | A kind of method of interface cladding optimization telluro composite material thermoelectricity capability | |
| CN102976293A (en) | Method for preparing high-crystallinity spherical hexagonal boron nitride powder body | |
| CN101602495A (en) | A kind of lead telluride nano crystal and the brilliant preparation method of micron | |
| CN100363266C (en) | Process for preparing sodium antimony sulfide microwires and array thereof | |
| CN106025056A (en) | Preparation method of tin-sulfur compound thermoelectric material | |
| CN103626138A (en) | Preparation method of bismuth telluride nano thermoelectric material | |
| CN103043728A (en) | Barium cobalt thermoelectric material powder and preparation method thereof | |
| CN102976292B (en) | Method for preparing high-crystallinity spherical hexagonal boron nitride powder body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |