CN104961107B - Method for preparing silver antimony telluride thermoelectric material - Google Patents
Method for preparing silver antimony telluride thermoelectric material Download PDFInfo
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- CN104961107B CN104961107B CN201510266185.5A CN201510266185A CN104961107B CN 104961107 B CN104961107 B CN 104961107B CN 201510266185 A CN201510266185 A CN 201510266185A CN 104961107 B CN104961107 B CN 104961107B
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- telluride
- antimony
- silver
- thermoelectric material
- silver telluride
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- 239000000463 material Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 28
- LGFYIAWZICUNLK-UHFFFAOYSA-N antimony silver Chemical compound [Ag].[Sb] LGFYIAWZICUNLK-UHFFFAOYSA-N 0.000 title abstract 6
- YRXWPCFZBSHSAU-UHFFFAOYSA-N [Ag].[Ag].[Te] Chemical compound [Ag].[Ag].[Te] YRXWPCFZBSHSAU-UHFFFAOYSA-N 0.000 claims abstract description 80
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052714 tellurium Inorganic materials 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 239000000126 substance Substances 0.000 claims abstract description 32
- 238000005245 sintering Methods 0.000 claims abstract description 27
- MRPWWVMHWSDJEH-UHFFFAOYSA-N antimony telluride Chemical compound [SbH3+3].[SbH3+3].[TeH2-2].[TeH2-2].[TeH2-2] MRPWWVMHWSDJEH-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000000713 high-energy ball milling Methods 0.000 claims abstract description 19
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 61
- 229910052787 antimony Inorganic materials 0.000 claims description 59
- 230000005619 thermoelectricity Effects 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 7
- 239000012467 final product Substances 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 238000005054 agglomeration Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 claims description 2
- 238000000280 densification Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 239000013590 bulk material Substances 0.000 abstract 1
- 238000002490 spark plasma sintering Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 150000004772 tellurides Chemical class 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003746 solid phase reaction Methods 0.000 description 2
- 238000010671 solid-state reaction Methods 0.000 description 2
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001503485 Mammuthus Species 0.000 description 1
- 241000722270 Regulus Species 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- DDJAGKOCVFYQOV-UHFFFAOYSA-N tellanylideneantimony Chemical compound [Te]=[Sb] DDJAGKOCVFYQOV-UHFFFAOYSA-N 0.000 description 1
- 230000005676 thermoelectric effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000007704 wet chemistry method Methods 0.000 description 1
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- Powder Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for preparing a silver antimony telluride thermoelectric material, which is characterized by comprising the following steps: 1) preparing materials: taking silver telluride and antimony telluride as main raw materials, taking trace elemental tellurium as a thermoelectric property adjusting component, and adjusting the thermoelectric property according to a molar ratio (0.9-1.1): (0.9-1.1): weighing silver telluride, antimony telluride and simple substance tellurium as reaction raw materials, wherein x is 0-0.04; 2) high-energy ball milling: carrying out high-energy ball milling on the reaction raw materials in the step 1) under the inert gas protection atmosphere to obtain single-phase silver antimony telluride powder; 3) spark plasma sintering: and (3) performing discharge plasma sintering on the single-phase silver antimony telluride powder obtained in the step 2) to obtain the compact silver antimony telluride thermoelectric material. The raw materials used in the invention are stable in air, are not easy to oxidize, the whole process is simple and controllable, the preparation cost is low, the repeatability is good, and the prepared silver antimony telluride bulk material has high density, pure phase and excellent thermoelectric property.
Description
Technical field
The invention belongs to new energy materialses field is and in particular to a kind of method preparing silver telluride antimony thermoelectric material.
Background technology
Thermoelectric power generation technology is one kind static generation technology entirely.By the thermoelectric effect of thermoelectric material, (seebeck is imitated for it
Should) the direct conversion of realizing between heat energy and electric energy.Thermoelectric generating device generally has that device structure is simple, low noise, no grind
The advantages of damage, No leakage, long-term reliability are high.The conversion efficiency of thermo-electric device depends on the performance figure of merit zt (material of thermoelectric material
The characterization parameter of the comprehensive thermoelectricity capability of material) and the system temperature difference.Commercial warm thermoelectric material is lead telluride at present.Due to lead element
Toxicity, the middle temperature application of conventional thermoelectric materials is limited by very large.In order to realize thermoelectric power generation in solar energy electric-thermal
Electric compound power-generating, industrial low-density waste heat recovery and automobile (comprising the water surface ship such as mammoth tanker and submarine) motor exhaust return
The extensive utilization in the fields such as receipts.Current industrial circle substitutes telluride in the urgent need to opening up eco-friendly Novel middle-temperature thermoelectric material
Lead material.
Silver telluride antimony (agsbte2) it is one of middle warm electricity material system of current international research person's concern.In known letter
In single ternary compound, silver telluride antimony has the highest thermoelectricity capability figure of merit.Nothing due to ag, sb cation in its lattice structure
The optical phonon spectrum of sequence arrangement, complicated electronic band structure and softening, silver telluride antimony is intrinsic to have extremely low lattice thermal conductivity
With larger Seebeck coefficient.By the suitable stoichiometric proportion increasing tellurium, silver telluride antimonial is warm, electronic transport can be simultaneously
Optimized.And, silver telluride antimony thermoelectric material is respectively provided with good thermoelectricity transmission in the temperature range of whole room temperature～450 DEG C
Characteristic, this warm area is exactly that the low-density thermal source such as vehicle exhaust and industrial exhaust heat recycles corresponding warm area.
Prepare silver telluride antimonial at present and generally adopt high purity elemental silver (ag), antimony (sb) and simple substance tellurium (te) as anti-
Answer raw material.But, due to metal simple-substance silver and the active chemical property of antimony, it is special that the processing of simple substance raw material and withdrawing deposit is required to
Technique, this virtually increased the preparation cost of final product silver telluride antimonial, constrains the extensive of this thermoelectric material
Production development.
Content of the invention
The technical problem to be solved is to provide one kind to prepare tellurium for the deficiency of above-mentioned prior art presence
The method changing silver-colored antimony thermoelectric material, reaction raw materials are stable in the air, abandoned required in traditional vacuum melting and solid state reaction
Long-time pyroreaction, preparation process process is simple is controlled, consuming little energy, and prepared silver telluride antimony block materials cause
Density is high, and reproducible, thermoelectricity capability is excellent.
The present invention by solving the problems, such as adopted technical scheme set forth above is:
A kind of method preparing silver telluride antimony thermoelectric material, comprises the steps:
1) dispensing: with silver telluride, antimony telluride as primary raw material, micro simple substance tellurium is thermoelectricity capability modifying ingredients, according to rubbing
You are than (0.9-1.1): (0.9-1.1): x weighs silver telluride, antimony telluride and simple substance tellurium as reaction raw materials, and wherein x is 0～
0.04；
2) high-energy ball milling: by step 1) described reaction raw materials high-energy ball milling under inert gas shielding atmosphere, obtain single-phase tellurium
Change silver-colored antimony powder body；
3) discharge plasma sintering: by step 2) gained single-phase silver telluride antimony powder end carries out discharge plasma sintering, obtains final product
Fine and close silver telluride antimony thermoelectric material.
By such scheme, step 1) described in silver telluride, antimony telluride and simple substance tellurium the preferred 1:1:x of mol ratio, wherein x is
0～0.04.
By such scheme, step 1) described in binary tellurides silver telluride, antimony telluride and simple substance tellurium be powder, wherein
Silver telluride and antimony telluride particle diameter are less than 0.5mm, and simple substance tellurium particle diameter is not more than 1mm.If using block material, preferably powder in advance
Broken, to ensure step 2) in reaction raw materials be sufficiently mixed uniformly and high-energy ball milling reaction adequacy.
By such scheme, step 1) described in the purity of binary tellurides silver telluride, antimony telluride and simple substance tellurium be better than
99.5%.
By such scheme, step 2) described in High Energy Ball Milling Time be 6～20h.
By such scheme, step 2) described in high-energy ball milling rotating speed be 350～600rpm.
By such scheme, step 2) described in high-energy ball milling ratio of grinding media to material be 15～25.
By such scheme, step 3) described in the condition of discharge plasma sintering be: under vacuum or inert atmosphere, sintering pressure
Power is not less than 35mpa, and sintering temperature is 380～490 DEG C, and sintering time is 1～30min.
The silver telluride antimony thermoelectric material that said method prepares, density is more than or equal to 6.90g/cm3(silver telluride antimony is theoretical
Density is 7.16g/cm3), relative density is more than 96%；；Thermoelectricity capability index zt maximum is not less than 0.9, and room temperature is not less than
0.4；When wherein x is 0.02, gained silver telluride antimony thermoelectric material density is 7.12g/cm3, thermoelectricity capability index zt maximum reaches
1.13.
Compared with prior art, the invention has the beneficial effects as follows:
1st, the present invention utilizes ripe material process in industrial or laboratory and technology of preparing, with silver telluride, antimony telluride
For primary raw material, micro simple substance tellurium is thermoelectricity capability modifying ingredients, first passes through high-energy ball milling and obtains single-phase silver telluride antimony powder body,
Then adopt discharge plasma sintering technique, obtain high density silver telluride antimony block thermoelectric material, prepared silver telluride antimony regulus body
Material density is high, and purity is high, and reproducible, thermoelectricity capability is excellent, and performance is better than commercial lead telluride sample, and can be as needed
The sample of preparation different sizes and shapes.
2nd, compared with other preparation methoies, the present invention departing from the mentality of designing only with high purity elemental as initiation material,
Choose high stability binary tellurides silver telluride (ag under air atmosphere2Te), antimony telluride (sb2te3) it is primary raw material, add
Micro simple substance tellurium adjusts raw material for thermoelectricity capability, and its reason is that silver telluride antimony is intrinsic p-type thermoelectric material, by adding
The stoichiometric proportion that micro excessive tellurium changes anions and canons is conducive to increasing hole concentration, optimizes the electronic transport of material
Can, and reduce the thermal conductivity of material simultaneously；The present invention is raw materials used stable in the air, not oxidizable, effectively simplifies former
Material preserves and operating condition, and due to the preferable stability of primary raw material so that silver telluride antimony (agsbte2) thermoelectric material system
Standby condition requires to become to be more prone to realize；Especially the present invention is provided without metal simple-substance antimony sb and silver-colored ag, its powder of sb and ag
In atmosphere easily by oxygen and steam oxidation, need sealing preserve, and the inessential raw material non-metal simple-substance tellurium of the present invention
Then relatively stablize safety.
3rd, in the present invention, silver telluride antimony (agsbte is prepared with reference to discharge plasma sintering technique using high-energy ball milling2) thermoelectricity
Material, has abandoned required long-time pyroreaction in traditional vacuum melting and solid state reaction, and high-energy ball milling reacts to temperature no
Require, it is easy to large-scale low-cost produces it is easy to operate, discharge plasma sintering process is simple for consuming little energy in preparation process
Single controlled so that the whole preparation process time is short, preparation cost is low, reproducible, process is simple, flexibly controlled.
4th, the binary tellurides used in the present invention all can extensive by wet chemistry method, inexpensive be prepared, and reaction is former
Material binary tellurides stable in the air, not oxidizable it is easy to large-scale low-cost produce.
Brief description
Fig. 1 is that Powder x-ray diffraction collection of illustrative plates (xrd) collection of illustrative plates of products therefrom after high-energy ball milling in embodiment 1 (discharges
Before plasma agglomeration step), the vertical short-term of in figure is silver telluride antimony standard spectrum diffraction maximum position.
Fig. 2 is Powder x-ray diffraction collection of illustrative plates (xrd) collection of illustrative plates of the block silver telluride antimony thermoelectric material prepared by embodiment 1
(after discharge plasma sintering step), the vertical short-term of in figure is silver telluride antimony standard spectrum diffraction maximum position.
Fig. 3 is the thermoelectricity capability figure of the silver telluride block antimony thermoelectric material prepared by embodiment 1.
Specific embodiment
For a better understanding of the present invention, it is further elucidated with present disclosure with reference to embodiment, but the present invention is not
It is limited only to the following examples.
Embodiment 1
A kind of method preparing silver telluride antimony thermoelectric material, comprise the steps:
1) dispensing: with silver telluride, antimony telluride as primary raw material, micro simple substance tellurium is thermoelectricity capability modifying ingredients, according to rubbing
You weigh silver telluride, antimony telluride and simple substance tellurium as reaction raw materials than 1:1:x, and x is 0.02；Wherein, the quality purity of silver telluride
Better than 99.99%, the quality purity of antimony telluride is better than 99.999%, and the quality purity of simple substance tellurium is better than 99.999%, two kinds of telluriums
Compound is powder, below particle diameter preferably 200 mesh, simple substance tellurium be bulk, before ball milling in air atmosphere precomminution to particle diameter
Below 1mm；
2) high-energy ball milling: by step 1) described reaction raw materials all pour in stainless steel jar mill, in inert gas shielding gas
Carry out high-energy ball milling, rotational speed of ball-mill is 450rpm, ratio of grinding media to material is 20, and Ball-milling Time is 12h, obtains single-phase silver telluride antimony powder under atmosphere
Body；
3) discharge plasma sintering: by step 2) gained single-phase silver telluride antimony powder powder body loading diameter 15mm graphite jig
Interior, carry out discharge plasma sintering, sintering temperature is 440 DEG C, the time is 3min, pressure 50mpa, obtains final product high-compactness silver telluride
Antimony block thermoelectric material, density is 7.12g/cm3.
As shown in figure 1, step 2) afterwards gained powder body product xrd collection of illustrative plates it is known that: high-energy ball milling step gained sample is single
Phase silver telluride antimonial.
Fig. 2 is step 3) the xrd collection of illustrative plates of gained block after discharge plasma sintering, it is single-phase silver telluride antimonial, miscellaneous
Peak is negligible substantially, and after discharge plasma sintering, gained block is believed that as silver telluride antimony block thermoelectric material, initiates
Raw material is substantially completely converted into target product silver telluride antimonial.
The thermoelectricity capability of the high-compactness silver telluride block antimony thermoelectric material obtained by the present embodiment is shown in Fig. 3, with zt value Lai
Characterize, near 237 DEG C, can reach 1.13.It should be noted that the present embodiment prepares material has been more than 0.5 near room temperature,
This makes sample show high average zt value and conversion efficiency of thermoelectric in whole test warm area (about room temperature～350 DEG C).
Embodiment 2
A kind of method preparing silver telluride antimony thermoelectric material, comprise the steps:
1) dispensing: weigh silver telluride according to mol ratio 1:1, antimony telluride is reaction raw materials, x takes 0 (to be equivalent to and be not added with thermoelectricity
Property regulation composition simple substance tellurium powder)；The quality purity of silver telluride is better than in 99.99%, and the quality purity of antimony telluride is better than
99.999%, two kinds of tellurides are powder, below particle diameter preferably 200 mesh；
2) high-energy ball milling: by step 1) described reaction raw materials pour in stainless steel jar mill, in inert gas shielding atmosphere
Lower ball milling 8h, rotational speed of ball-mill is 420rpm, and ratio of grinding media to material is 20, obtains single-phase silver telluride antimony powder body；
3) discharge plasma sintering: by step 2) gained single-phase silver telluride antimony powder body load diameter 15mm graphite jig in,
Carry out discharge plasma sintering, sintering temperature is 460 DEG C, the time is 5min, pressure 40mpa, obtains final product high-compactness telluride silver bullion
Body antimony thermoelectric material, density is 6.96g/cm3.
The thermoelectricity capability zt value of the high-compactness silver telluride block antimony thermoelectric material obtained by the present embodiment is near 270 DEG C
Can reach 0.95, be more than 0.45 near room temperature, this makes sample show high average zt value and heat in whole test warm area
Photoelectric transformation efficiency.
Embodiment 3
A kind of method preparing silver telluride antimony thermoelectric material, comprises the steps:
1) dispensing: with silver telluride, antimony telluride as primary raw material, micro simple substance tellurium is thermoelectricity capability modifying ingredients, according to rubbing
You weigh silver telluride, antimony telluride and simple substance tellurium as reaction raw materials than 1:1:x, and x is 0.04；Wherein, the quality purity of silver telluride
Better than in 99.99%, the quality purity of antimony telluride is better than 99.999%, and the quality purity of simple substance tellurium is better than 99.999%, two kinds
Tellurides is powder, and below particle diameter preferably 200 mesh, simple substance tellurium is bulk, and before ball milling, precomminution is to below particle diameter 1mm；
2) high-energy ball milling: by step 1) described reaction raw materials pour in stainless steel jar mill, in inert gas shielding atmosphere
Lower ball milling 20h, rotational speed of ball-mill is 400rpm, and ratio of grinding media to material is 18, obtains single-phase silver telluride antimony powder body；
3) discharge plasma sintering: by step 2) gained single-phase silver telluride antimony powder body load diameter 15mm graphite jig in,
Carry out discharge plasma sintering, sintering temperature is 420 DEG C, the time is 1min, pressure 70mpa, obtains final product high-compactness telluride silver bullion
Body antimony thermoelectric material, density is 7.04g/cm3.
The thermoelectricity capability zt value of the high-compactness silver telluride block antimony thermoelectric material obtained by the present embodiment is near 240 DEG C
Can reach 1.09, be more than 0.45 near room temperature, this makes sample show high average zt value and heat in whole test warm area
Photoelectric transformation efficiency.
Certainly, for technical solutions according to the invention, according to mol ratio (0.9-1.1): (0.9-1.1): x weighs telluride
Silver, antimony telluride and simple substance tellurium (wherein x is 0～0.04) as reaction raw materials, such as 0.98:1.01:0.02, take the circumstances into consideration within this range
The stoichiometry of adjustment three is used for primary raw material and thermoelectricity capability modifying ingredients, also can successfully prepare high-compactness silver telluride
Antimony block thermoelectric material, thus realizing technical scheme, embodiment numerous to list herein.
The above is only the preferred embodiment of the present invention it is noted that coming for those of ordinary skill in the art
Say, without departing from the concept of the premise of the invention, some modifications and variations can also be made, these broadly fall into the present invention's
Protection domain.
Claims (10)
1. a kind of method preparing silver telluride antimony thermoelectric material is it is characterised in that comprise the steps:
1) dispensing: with silver telluride, antimony telluride as primary raw material, simple substance tellurium is thermoelectricity capability modifying ingredients, according to mol ratio (0.9-
1.1): (0.9-1.1): x weighs silver telluride, antimony telluride and simple substance tellurium as reaction raw materials, and wherein x is 0～0.04；
2) high-energy ball milling: by step 1) described reaction raw materials carry out high-energy ball milling under inert gas shielding atmosphere, obtain single-phase tellurium
Change silver-colored antimony powder body；
3) discharge plasma sintering: by step 2) gained single-phase silver telluride antimony powder end carries out discharge plasma sintering, obtains final product densification
Silver telluride antimony thermoelectric material.
2. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that step 1) dispensing
For: with silver telluride, antimony telluride as primary raw material, simple substance tellurium is thermoelectricity capability modifying ingredients, weighs telluride according to mol ratio 1:1:x
Silver, antimony telluride and simple substance tellurium, wherein x is 0～0.04.
3. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that step 1) described
Silver telluride, antimony telluride and simple substance tellurium be powder.
4. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that silver telluride and tellurium
Change antimony particle diameter and be less than 0.5mm, simple substance tellurium particle diameter is not more than 1mm.
5. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that step 1) described
Silver telluride, antimony telluride and simple substance tellurium purity be better than 99.5%.
6. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that step 2) in high
Can Ball-milling Time be 6～20h.
7. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that step 2) in high
Can rotational speed of ball-mill be 350～600rpm.
8. a kind of method preparing silver telluride antimony thermoelectric material according to claim 1 is it is characterised in that step 2) in high
Can ball milling ratio of grinding media to material be 15～25.
9. according to claim 1 a kind of method preparing silver telluride antimony thermoelectric material it is characterised in that step 3) in put
The condition of electric plasma agglomeration is: under vacuum or inert atmosphere, sintering pressure is not less than 35mpa, and sintering temperature is 380～490
DEG C, sintering time is 1～30min.
10. the silver telluride antimony thermoelectric material that one of claim 1-9 methods described prepares.
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| CN105420528B (en) * | 2016-01-12 | 2017-09-26 | 武汉理工大学 | One kind prepares high-performance AgInTe2The method of thermoelectric material |
| CN109536821B (en) * | 2018-11-21 | 2020-02-14 | 哈尔滨工业大学（深圳） | Europium-zinc-antimony-based Zintl phase thermoelectric material and preparation method thereof |
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| CN101736173B (en) * | 2010-01-08 | 2011-11-16 | 武汉理工大学 | Method for preparing AgSbTe2 thermoelectric material by combining melt rotatable swinging and spark plasma sintering |
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