CN101214548A - Method for preparing core-shell structure nano pyroelectric material - Google Patents
Method for preparing core-shell structure nano pyroelectric material Download PDFInfo
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- CN101214548A CN101214548A CNA2007101648558A CN200710164855A CN101214548A CN 101214548 A CN101214548 A CN 101214548A CN A2007101648558 A CNA2007101648558 A CN A2007101648558A CN 200710164855 A CN200710164855 A CN 200710164855A CN 101214548 A CN101214548 A CN 101214548A
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 239000011258 core-shell material Substances 0.000 title claims description 12
- 238000000034 method Methods 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 4
- 239000010941 cobalt Substances 0.000 claims abstract description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000011701 zinc Substances 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 3
- 239000011133 lead Substances 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 14
- 229910052714 tellurium Inorganic materials 0.000 claims description 13
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 11
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical group OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 10
- OMOVVBIIQSXZSZ-UHFFFAOYSA-N [6-(4-acetyloxy-5,9a-dimethyl-2,7-dioxo-4,5a,6,9-tetrahydro-3h-pyrano[3,4-b]oxepin-5-yl)-5-formyloxy-3-(furan-3-yl)-3a-methyl-7-methylidene-1a,2,3,4,5,6-hexahydroindeno[1,7a-b]oxiren-4-yl] 2-hydroxy-3-methylpentanoate Chemical compound CC12C(OC(=O)C(O)C(C)CC)C(OC=O)C(C3(C)C(CC(=O)OC4(C)COC(=O)CC43)OC(C)=O)C(=C)C32OC3CC1C=1C=COC=1 OMOVVBIIQSXZSZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052787 antimony Inorganic materials 0.000 claims description 9
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 9
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- JYGXADMDTFJGBT-VWUMJDOOSA-N hydrocortisone Chemical compound O=C1CC[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 JYGXADMDTFJGBT-VWUMJDOOSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229960000890 hydrocortisone Drugs 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 2
- 229960001484 edetic acid Drugs 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 description 26
- 238000001027 hydrothermal synthesis Methods 0.000 description 18
- 238000009413 insulation Methods 0.000 description 12
- 229910000033 sodium borohydride Inorganic materials 0.000 description 11
- 239000012279 sodium borohydride Substances 0.000 description 11
- FAPDDOBMIUGHIN-UHFFFAOYSA-K antimony trichloride Chemical compound Cl[Sb](Cl)Cl FAPDDOBMIUGHIN-UHFFFAOYSA-K 0.000 description 7
- JHXKRIRFYBPWGE-UHFFFAOYSA-K bismuth chloride Chemical compound Cl[Bi](Cl)Cl JHXKRIRFYBPWGE-UHFFFAOYSA-K 0.000 description 5
- 229910002665 PbTe Inorganic materials 0.000 description 4
- 229910007657 ZnSb Inorganic materials 0.000 description 4
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 description 4
- 239000012046 mixed solvent Substances 0.000 description 3
- FRTNIYVUDIHXPG-UHFFFAOYSA-N acetic acid;ethane-1,2-diamine Chemical class CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O.NCCN FRTNIYVUDIHXPG-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002171 ethylene diamines Chemical class 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910018989 CoSb Inorganic materials 0.000 description 1
- 241000549556 Nanos Species 0.000 description 1
- 230000005679 Peltier effect Effects 0.000 description 1
- 230000005678 Seebeck effect Effects 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910001439 antimony ion Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- DDJAGKOCVFYQOV-UHFFFAOYSA-N tellanylideneantimony Chemical compound [Te]=[Sb] DDJAGKOCVFYQOV-UHFFFAOYSA-N 0.000 description 1
- PDYNJNLVKADULO-UHFFFAOYSA-N tellanylidenebismuth Chemical compound [Bi]=[Te] PDYNJNLVKADULO-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
The invention relates to method for preparing a nanometer thermoelectric material with a nuclear shell structure. A traditional single thermoelectric material has lower thermoelectric switch efficiency. The detail steps of the invention relate to: putting a metal A and an object B into a reaction kettle and adding alkali, solvent and addition agent for keeping temperature for 2 to 48 hours under 110 to 500 DEG C to generate a compound C; getting the compound C out and putting into the reaction kettle after washed by deionized water or ethanol and adding a metal D and an object E as well as alkali, solvent and addition agent for keeping temperature for 2 to 48 hours under 110 to 500 DEG C to generate a compound thermoelectric material with a nuclear shell structure which takes the compound C as the nuclear and the compound F as the shell; wherein, the metal A and D relate to one of stibium, bismuth, cobalt, iron, lead and zinc; the object B and E relate to Te or stibium. The method of the invention can prepare the compound thermoelectric material with a nuclear shell structure; wherein, the nuclear and the shell are all thermoelectric materials; relatively to the traditional thermoelectric material, the invention can improve the zero dimension thermoelectric figure of merit; thereby improving the thermoelectric switch efficiency.
Description
Technical field
The present invention relates to the semi-conductor thermoelectric material technical field, core-shell structure nano pyroelectric material (comprises Sb specifically
2Te
3Coat Bi
2Te
3, Bi
2Te
3Coat Sb
2Te
3And the thermoelectric material of other nuclear shell structure nanos) preparation method.
Background technology
From the sixties in 20th century, people utilize the difference of temperature of semi-conducting material can develop temperature difference power supply and TEC.The former utilizes the Seebeck effect to realize the direct conversion of heat energy to electric energy, and the latter utilizes the Peltier effect to realize the transfer of heat from the low-temperature end to the temperature end.They have friction, noiseless, and advantage such as pollution-free is desirable power supply and refrigerator.But because recent decades, conversion efficiency of thermoelectric was lower than 10% always, its application has been subjected to considerable restraint.The key that improves conversion efficiency of thermoelectric is to seek the thermoelectric material with high dimensionless thermoelectric figure of merit ZT.Dimensionless thermoelectric figure of merit ZT=S
2T/ ρ κ, wherein S, ρ and κ are respectively Seebeck coefficient, resistivity and the thermal conductivities of material, T is an absolute temperature.Just require material to have big Seebeck coefficient, little resistivity and thermal conductivity.If obtain breaking through, temperature difference power supply for sophisticated technology fields such as spacecraft, nuclear submarine provide the power supply, industrial waste heat and vehicle exhaust generating aspect has good prospects for application utilizing except at present.Utilize waste-heat power generation to have energy-conservation and the environmental protection double benefit.Thermoelectric cooling also will obtain using more widely at aspects such as optical communication device, microelectronic component, medical equipment and daily lifes.
The performance of utilizing material to improve thermoelectric material in the special nature of nanoscale is a research and development focus in recent years, has also obtained some progress.People such as Venkatasubramanian report and claim Bi under the room temperature
2Te
3/ Sb
2Te
3The ZT of superlattice film near 2.4 (Nature 413 (2001) 597].Zhao new recruits etc. utilize Bi
2Te
3Nanometer powder adds Bi to
2Te
3The performance of the homojunction combined material for preparing in the matrix be significantly improved (ZL 200310109130.0).People such as Ohta have reported SrTiO
3The two-dimensional structure of system has huge Seebeck coefficient [Nature Materials 6 (2007) 129].But these methods existence such as preparation cost height, complex process, nanometer powders evenly disperse many difficulties such as difficulty in matrix.
Antimony telluride (Sb
2Te
3) and bismuth telluride (Bi
2Te
3) wait important low-temperature space thermoelectric material, be the preferred material of preparation low temperature thermoelectric unit spare.The thermoelectric figure of merit that how further to improve them is one of focus of Materials Science and Engineering scientific research.The present invention provides has a nuclear-shell structured nano-composite material preparation method based on them.
Summary of the invention
The object of the present invention is to provide a kind of method for preparing core-shell structure nano pyroelectric material.
Preparation method of the present invention utilizes solvent-thermal method to prepare the thermoelectric material with nucleocapsid structure in two steps.In the solvent-thermal method process, metallic antimony, bismuth metal, tellurium, antimony chloride, bismuth chloride, sodium borohydride are under the solvent heat condition of auxiliary agents such as NaOH or potassium hydroxide and disodium ethylene diamine tetraacetate, and reaction obtains the nano pyroelectric material of nucleocapsid structure.
This preparation method specifically may further comprise the steps:
1) metal A and substance B are put into closed reaction kettle, add alkali, solvent, auxiliary agent, regulate and control temperature of reaction kettle afterwards and make it remain on 110～500C, be incubated 2～48 hours, generate as the metal A of thermoelectric material and the Compound C of substance B;
2) Compound C is taken out from reactor, clean up with deionized water or ethanol;
3) Compound C that cleans up is put into closed reaction kettle, add metal D and material E, add alkali, solvent, auxiliary agent again, regulating and control temperature of reaction kettle afterwards makes it remain on 110～500 ℃, be incubated 2～48 hours, be coated on outside the Compound C, generate as the metal D of thermoelectric material and the compound F 17-hydroxy-corticosterone of material E, forming with the Compound C is that nuclear, compound F 17-hydroxy-corticosterone are the composite thermoelectric material of the nucleocapsid structure of shell.
Described metal A and D are a kind of in antimony, bismuth, cobalt, iron, lead, the zinc.
Described substance B and E are tellurium or antimony.
Described alkali is NaOH or potassium hydroxide.
Described solvent is one or more the mixture in the organic solvents such as water and methyl alcohol, ethanol, ethylenediamine, ethylene glycol, EGME, glycerine, benzene.
Described auxiliary agent is disodium ethylene diamine tetraacetate or ethylenediamine tetra-acetic acid.
Metal A and D can use metal A and D simple substance, also can be in reactor make by reducing its slaine.
Substance B and E can use the simple substance of B and E, also can be in reactor make by reducing its corresponding salt.
The inventive method can make the composite thermoelectric material of nucleocapsid structure, and its center and shell are thermoelectric material.The composite thermoelectric material of the nucleocapsid structure of this method preparation can improve phon scattering reduction thermal conductivity with respect to the thermoelectric material of traditional single structure, improves dimensionless thermoelectric figure of merit ZT, and then improves conversion efficiency of thermoelectric.
The specific embodiment
Embodiment 1:
1) in volume is 100 milliliters hydrothermal reaction kettle, at first adds the 0.1g tellurium, add the 0.1g antimony chloride then successively, 0.1g NaOH, 0.1 gram disodium ethylene diamine tetraacetate, 0.1g sodium borohydride, 10 ml deionized water.The regulation and control temperature of reaction kettle makes it remain on 120 ℃, and insulation 48h obtains Sb
2Te
3Powder;
2) with Sb
2Te
3Powder takes out from hydrothermal reaction kettle, and is clean with the deionized water washing;
3) with the Sb that cleans up
2Te
3Powder is put into hydrothermal reaction kettle, adds the 0.1g tellurium then successively, 0.1g bismuth chloride, 0.1g potassium hydroxide, 0.1 gram disodium ethylene diamine tetraacetate, 0.1g sodium borohydride, 10 ml deionized water.The regulation and control temperature of reaction kettle makes it remain on 150 ℃, and insulation 30h obtains core-shell structured powder material (Bi
2Te
3Coat Sb
2Te
3).
In this method, antimony chloride and sodium borohydride reaction antimony ion is reduced into metal simple-substance antimony, antimony and metallic tellurium in thermal and hydric environment and NaOH, disodium ethylene diamine tetraacetate make reaction generation Sb under the condition of auxiliary agent
2Te
3, then with Sb
2Te
3As nucleus growth Bi
2Te
3, so just obtain nucleocapsid structure Bi
2Te
3Coat Sb
2Te
3Thermoelectric material.
Embodiment 2:
1) in volume is 100 milliliters hydrothermal reaction kettle, at first adds 10g antimony and 20g tellurium, add 10g potassium hydroxide, 5 gram ethylenediamine tetra-acetic acids, 50 milliliters of ethylenediamines then successively.The regulation and control temperature of reaction kettle makes it remain on 300 ℃, and insulation 15h obtains Sb
2Te
3Powder;
2) with Sb
2Te
3Powder takes out from hydrothermal reaction kettle, and is clean with the deionized water washing;
3) with the Sb that cleans up
2Te
3Powder is put into hydrothermal reaction kettle, adds the 20g tellurium then successively, 20g bismuth chloride, 10g NaOH, 5 gram ethylenediamine tetra-acetic acids, 5g sodium borohydride, 50 ml deionized water.The regulation and control temperature of reaction kettle makes it remain on 300 ℃, and insulation 24h obtains core-shell structured powder material (Bi
2Te
3Coat Sb
2Te
3).
Embodiment 3:
1) in volume is 100 milliliters hydrothermal reaction kettle, at first adds 0.1g metallic zinc and 0.1g metallic antimony, add 0.1g NaOH, 0.1 gram disodium ethylene diamine tetraacetate, 10 milliliters of ethanol then successively.The regulation and control temperature of reaction kettle makes it remain on 110 ℃, and insulation 48h obtains the ZnSb powder;
2) the ZnSb powder is taken out from hydrothermal reaction kettle, use the ethanol wash clean;
3) the ZnSb powder that cleans up is put into hydrothermal reaction kettle, add the 0.1g tellurium then successively, 0.1g antimony chloride, 0.1g NaOH, 0.1 gram disodium ethylene diamine tetraacetate, 0.1g sodium borohydride, 10 ml deionized water.The regulation and control temperature of reaction kettle makes it remain on 110 ℃, and insulation 48h obtains core-shell structured powder material (Sb
2Te
3Coat ZnSb).
Embodiment 4:
1) in volume is 100 milliliters hydrothermal reaction kettle, at first adds the 20g tellurium, add the 20g bismuth chloride then successively, 10g NaOH, 5 gram disodium ethylene diamine tetraacetates, 5g sodium borohydride, the mixed solvent of 50 milliliters of ethanol and ethylene glycol.The regulation and control temperature of reaction kettle makes it remain on 500 ℃, and insulation 2h obtains Bi
2Te
3Powder;
2) with Bi
2Te
3Powder takes out from hydrothermal reaction kettle, cleans up with ethanol;
3) with the Bi that cleans up
2Te
3Powder is put into hydrothermal reaction kettle, adds the 20g tellurium then successively, 20g antimony chloride, 10g NaOH, 5 gram disodium ethylene diamine tetraacetates, 5g sodium borohydride, the mixed solvent of 50 milliliters of ethanol and ethylene glycol.The regulation and control temperature of reaction kettle makes it remain on 500 ℃, and insulation 2h obtains core-shell structured powder material (Sb
2Te
3Coat Bi
2Te
3).
Embodiment 5:
1) in volume is 100 milliliters hydrothermal reaction kettle, at first adds the 15g tellurium, add the 15g bismuth chloride then successively, 5g NaOH, 2 gram disodium ethylene diamine tetraacetates, 5g sodium borohydride, the mixed solvent of 50 ml deionized water and ethylenediamine.The regulation and control temperature of reaction kettle makes it remain on 400 ℃, and insulation 5h obtains Bi
2Te
3Powder;
2) with Bi
2Te
3Powder takes out from hydrothermal reaction kettle, cleans up with deionized water;
3) with the Bi that cleans up
2Te
3Powder is put into hydrothermal reaction kettle, adds the 10g cobalt then successively, 15g antimony chloride, 2g NaOH, 5 gram disodium ethylene diamine tetraacetates, 5g sodium borohydride, 50 ml deionized water.The regulation and control temperature of reaction kettle makes it remain on 400 ℃, insulation 5h, and (CoSb coats Bi to obtain the core-shell structured powder material
2Te
3).
Embodiment 6:
1) in volume is 100 milliliters hydrothermal reaction kettle, at first adds the 4g tellurium, add 4g lead then successively, 2g NaOH, 2 gram disodium ethylene diamine tetraacetates, 50 milliliters of ethylenediamines.The regulation and control temperature of reaction kettle makes it remain on 300 ℃, and insulation 15h obtains the PbTe powder;
2) the PbTe powder is taken out from hydrothermal reaction kettle, clean up with deionized water;
3) the PbTe powder that cleans up is put into hydrothermal reaction kettle, add 4g iron then successively, 6g antimony chloride, 2g NaOH, 5 gram disodium ethylene diamine tetraacetates, 5g sodium borohydride, 50 ml deionized water.The regulation and control temperature of reaction kettle makes it remain on 300 ℃, and insulation 15h obtains core-shell structured powder material (FeSb
2Coat PbTe).
Claims (2)
1. the preparation method of core-shell structure nano pyroelectric material is characterized in that this preparation method specifically may further comprise the steps:
1) metal A and substance B are put into closed reaction kettle, add alkali, solvent, auxiliary agent, regulate and control temperature of reaction kettle afterwards and make it remain on 110～500 ℃, be incubated 2～48 hours, generate as the metal A of thermoelectric material and the Compound C of substance B;
2) Compound C is taken out from reactor, clean up with deionized water or ethanol;
3) Compound C that cleans up is put into closed reaction kettle, add metal D and material E, add alkali, solvent, auxiliary agent again, regulating and control temperature of reaction kettle afterwards makes it remain on 110～500 ℃, be incubated 2～48 hours, be coated on outside the Compound C, generate as the metal D of thermoelectric material and the compound F 17-hydroxy-corticosterone of material E, forming with the Compound C is that nuclear, compound F 17-hydroxy-corticosterone are the composite thermoelectric material of the nucleocapsid structure of shell;
Described metal A and D are a kind of in antimony, bismuth, cobalt, iron, lead, the zinc;
Described substance B and E are tellurium or antimony;
Described alkali is NaOH or potassium hydroxide;
Described solvent is one or more the mixture in water, methyl alcohol, ethanol, ethylenediamine, ethylene glycol, EGME, glycerine, the benzene;
Described auxiliary agent is disodium ethylene diamine tetraacetate or ethylenediamine tetra-acetic acid.
2. the preparation method of core-shell structure nano pyroelectric material as claimed in claim 1 is characterized in that described adding metal A adopts the simple substance that directly adds metal A, or makes metal A by reducing its slaine in reactor; Described adding metal D adopts the directly simple substance of adding metal D, or makes metal D by reducing its slaine in reactor; Described adding substance B adopts the directly simple substance of adding substance B, or makes substance B by reducing its corresponding salt in reactor; Described adding material E adopts the simple substance that directly adds material E; Or in reactor, make material E by reducing its corresponding salt.
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| CN102132430B (en) * | 2008-08-11 | 2016-03-30 | 三星电子株式会社 | Thermoelectric material, its preparation method that anisotropy is extended and comprise the device of this material |
| CN105382254A (en) * | 2015-11-05 | 2016-03-09 | 江苏大学 | Bi2Te3-Sb2Te3 core-shell structure nanometer wire and preparing method thereof |
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| CN105642884A (en) * | 2016-01-21 | 2016-06-08 | 合肥工业大学 | Preparation method for Bi-Te-based thermoelectric material with core-shell structure |
| CN105642884B (en) * | 2016-01-21 | 2017-08-25 | 合肥工业大学 | A kind of preparation method of the Bi Te base thermoelectricity materials with core shell structure |
| CN106278271A (en) * | 2016-08-23 | 2017-01-04 | 昆明理工大学 | A kind of preparation method of bismuth-sulfide polycrystalline thermoelectric material |
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