CN110828651B - Preparation method for optimizing thermoelectric performance of silver selenide/nylon flexible composite film - Google Patents
Preparation method for optimizing thermoelectric performance of silver selenide/nylon flexible composite film Download PDFInfo
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- KDSXXMBJKHQCAA-UHFFFAOYSA-N disilver;selenium(2-) Chemical compound [Se-2].[Ag+].[Ag+] KDSXXMBJKHQCAA-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000004677 Nylon Substances 0.000 title claims abstract description 47
- 229920001778 nylon Polymers 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000011669 selenium Substances 0.000 claims abstract description 28
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002070 nanowire Substances 0.000 claims abstract description 21
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 18
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000007731 hot pressing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002086 nanomaterial Substances 0.000 claims abstract description 13
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000000967 suction filtration Methods 0.000 claims abstract description 5
- 239000010408 film Substances 0.000 claims description 53
- 239000010409 thin film Substances 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 claims description 4
- 229960005070 ascorbic acid Drugs 0.000 claims description 2
- 235000010323 ascorbic acid Nutrition 0.000 claims description 2
- 239000011668 ascorbic acid Substances 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000006228 supernatant Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000003756 stirring Methods 0.000 description 5
- 101710134784 Agnoprotein Proteins 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003828 vacuum filtration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000001132 ultrasonic dispersion Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/01—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/85—Thermoelectric active materials
- H10N10/851—Thermoelectric active materials comprising inorganic compositions
- H10N10/852—Thermoelectric active materials comprising inorganic compositions comprising tellurium, selenium or sulfur
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Abstract
The invention relates to a preparation method for optimizing thermoelectric performance of a silver selenide/nylon flexible composite film, which comprises the following steps: (1) reacting selenium nanowire serving as a template with silver nitrate in an ethylene glycol solvent at 40 ℃, and separating to obtain a silver selenide nanostructure; (2) dispersing the silver selenide nanostructure in absolute ethyl alcohol, taking a nylon filter membrane as a substrate, performing suction filtration, and drying to obtain a nylon-silver selenide film; (3) and (3) finally, carrying out hot-pressing treatment on the nylon-silver selenide film obtained in the step (2) to obtain a target product. Compared with the prior art, the method can prepare the high-performance flexible thermoelectric film, and the film is used for manufacturing the high-output thermoelectric device to supply power for the wearable electronic device.
Description
Technical Field
The invention belongs to the technical field of thermoelectric material preparation, and relates to a preparation method for optimizing thermoelectric performance of a silver selenide/nylon flexible composite film.
Background
Thermoelectric materials are a class of functional materials that can directly achieve interconversion between thermal energy and electrical energy. The thermoelectric power generation and refrigeration device prepared from the thermoelectric material has the advantages of simple structure, small volume, no need of moving parts, no abrasion, no noise, no pollution and the like. The thermoelectric material is used as an environment-friendly material and has wide application prospect.
The performance index of the thermoelectric material is generally measured by a dimensionless figure of merit ZT, and the expression is as follows:
ZT＝α2σ T/κ wherein:
alpha is a Seebeck coefficient; σ is the conductivity; kappa is the thermal conductivity; t is the thermodynamic temperature. For thin film materials, the power factor PF (PF ═ α) is often used2σ) to measure itThermoelectric performance.
In recent years, flexible thermoelectric materials have attracted more and more attention and made certain progress, especially organic thermoelectric materials, but because organic materials have the disadvantages of poor air/thermal stability, difficulty in n-type doping, low thermoelectric performance and the like, more and more attention is paid to a method for supporting an inorganic material by using a flexible material as a substrate.
Ag2Se belongs to a narrow bandgap semiconductor (0 ℃, energy gap 0.07eV), and has a phase transition at 133 ℃. Low temperature phase Ag2Se has an orthorhombic structure and belongs to the semiconductor characteristic, high-temperature phase Ag2Se has a cubic structure and belongs to a super ion conductor. Wherein, low temperature phase Ag2Se has high electrical conductivity, high Seebeck coefficient and low thermal conductivity, and has excellent thermoelectric properties near room temperature. But most of the Ag currently prepared2Se materials are all inflexible, limiting their application to flexible thermoelectric materials.
Recently, chinese patent CN 109293962 a proposed a method for preparing a silver selenide/nylon flexible composite film with high thermoelectric performance, in which a uniform silver selenide nanowire (diameter about 65nm) is synthesized by a wet chemical method at room temperature, and a silver selenide film with certain flexibility is obtained by using a flexible nylon filter membrane as a substrate and by means of suction filtration and hot pressing. The power factor of the film at room temperature can reach 987 mu W m-1K-2Is one of the highest values of the n-type flexible thermoelectric materials reported at present. However, the thermoelectric properties of the thin film are still a certain gap from the existing high-performance bulk silver selenide, mainly due to three aspects: (1) sintering of uniform nanowires is challenging, resulting in a porous structure with low density (relative density 70%); (2) the silver selenide grains of the film have obvious preferred orientation in the (00l) direction, and the first principle calculation shows that the silver selenide grains in the (00l) direction have the lowest power factor in the three directions of (00l), (0l0) and (l 00); (3) the carrier concentration of the film is not optimized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a preparation method for optimizing thermoelectric performance of a silver selenide/nylon flexible composite film.
The purpose of the invention can be realized by the following technical scheme:
a preparation method for optimizing thermoelectric performance of a silver selenide/nylon flexible composite film comprises the following steps:
(1) reacting selenium nanowire serving as a template with silver nitrate in an ethylene glycol solvent at 40 ℃, and separating to obtain a silver selenide nanostructure;
(2) dispersing the silver selenide nanostructure in absolute ethyl alcohol, taking a nylon filter membrane as a substrate, performing suction filtration, and drying to obtain a nylon-silver selenide film;
(3) and (3) finally, carrying out hot-pressing treatment on the nylon-silver selenide film obtained in the step (2) to obtain a target product.
Further, in the step (1), the selenium nanowire is synthesized by taking selenium dioxide as a selenium source and ascorbic acid as a reducing agent.
Further, in the step (1), the molar ratio of the silver nitrate to the selenium nanowires is 2-4: 1.
Further, in the step (1), the concentration of the selenium nanowire in the ethylene glycol solvent is 10-45 mmol/L.
Furthermore, in the step (1), the reaction time is 1.5-2.5 h.
Further, in the step (1), the separation process specifically comprises: centrifuging at 4000r/min for 2-4min, removing supernatant, adding ethanol and deionized water into the centrifuge tube alternately, and centrifuging at 4000r/min for 2-4min to remove impurities.
Further, in the step (2), the aperture of the nylon filter membrane is 0.22 μm.
Further, in the step (2), the drying temperature is 60-70 ℃ and the drying time is 10-12 h.
Further, in the step (3), the hot pressing process conditions are as follows: hot pressing at 200-250 deg.C under 1-4MPa for 30 min.
Compared with the prior art, the invention has the following advantages:
(1) the temperature of the original synthesized silver selenide nanostructure is increased to 40 ℃ from room temperature, so that the synthesized silver selenide is changed into the nanostructure with different scales from the original uniform nanowire, the silver selenide film after the subsequent hot pressing treatment is compact and has no preferred orientation, and the thermoelectric property is greatly improved.
(2) The preparation process is simple and easy to implement, low in cost, low-temperature and short-time heat treatment is adopted, and energy is saved;
(3) simple process improvement, synthesis of multi-scale silver selenide nano-structure, complete sintering into compact film (relative density is increased to 90%), and effective regulation of preferred orientation of silver selenide crystal grain. Finally, the conductivity is improved by nearly two times, so that the thermoelectric performance is also improved by nearly two times;
(4) the prepared composite film has strong binding force between the inorganic phase and the flexible substrate, has excellent flexibility and is beneficial to use on flexible devices;
drawings
FIG. 1 is an XRD (X-ray diffraction) diagram of the prepared hot-pressed silver selenide/nylon flexible composite film, wherein HP-40-film represents the composite film prepared by reaction at 40 ℃, and HP-RT-film represents the composite film prepared by reaction at room temperature;
FIG. 2 is a thermoelectric performance diagram of a hot-pressed silver selenide/nylon flexible composite film prepared at different temperatures;
in fig. 3, (a) is a uniform silver selenide nanowire prepared by a room temperature reaction, and (b) is a multi-scale silver selenide nanostructure prepared by a reaction at 40 ℃;
FIG. 4 is an SEM image of a hot-pressed silver selenide/nylon flexible composite film prepared by the invention;
fig. 5 is a digital photo of a hot-pressed silver selenide/nylon flexible composite film made in accordance with the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the following examples, unless otherwise specified, starting materials or processing techniques are all those conventionally available in the art or conventional processing techniques.
Example 1:
preparation of silver selenide (Ag) with high thermoelectric property2Se)/nylon flexible composite film is prepared by dispersing 20ml of selenium nanowire (Se) in Ethylene Glycol (EG) (45mmol/L), and 0.6g of silver nitrate (AgNO)3) Adding 80ml of ethylene glycol into a beaker, stirring for 2 hours at 40 ℃, centrifuging at the rotating speed of 4000r/min, extracting the obtained black precipitate, alternately adding deionized water and absolute ethyl alcohol, centrifuging at the rotating speed of 4000r/min for 3 minutes, cleaning to remove impurities, dispersing the carefully cleaned black target product into 15ml of absolute ethyl alcohol after centrifuging, ultrasonically dispersing for 15 minutes, then taking a nylon filter membrane as a substrate, carrying out vacuum filtration to obtain a silver selenide/nylon flexible membrane, and drying the obtained membrane in a vacuum drying oven at the temperature of 60 ℃ for 12 hours. Taking out the film, hot pressing at 200 deg.C under 1MPa for 30min to obtain power factor of 1882 μ W m-1K-2The silver selenide/nylon flexible composite film.
Comparative example 1
In comparison with example 1, the majority are the same, except that the stirred reaction temperature of 40 ℃ is changed to room temperature.
Fig. 1 is an XRD comparison graph of the hot-pressed silver selenide/nylon flexible composite film prepared at 40 ℃ (i.e., example 1) and room temperature, the peak of silver selenide can be well corresponded to the standard card, and compared to the hot-pressed composite film prepared at room temperature, the peak of the hot-pressed composite film prepared at 40 ℃ no longer shows (00l) orientation, i.e., the original preferred orientation is changed. Fig. 2 shows the thermoelectric properties of the hot-pressed silver selenide/nylon flexible composite film prepared at different temperatures, and it can be seen that the conductivity of the composite film prepared under the reaction condition of 40 ℃ is nearly doubled compared with the conductivity of the composite film prepared at room temperature, resulting in the nearly doubled power factor.
Comparative example 2
Compared to example 1, the same is for the most part true, except that the stirring reaction temperature of 40 ℃ is changed to 50 ℃.
As can be seen from fig. 2, as the temperature is increased from 40 ℃, the thermoelectric performance of the hot-pressed silver selenide/nylon flexible composite film is not increased, but begins to decrease. The conductivity of the composite film prepared under the reaction condition of 50 ℃ is reduced to 354.7S/cm, so that the power factor is seriously reduced. In comparison, the thermoelectric performance of the hot-pressed silver selenide/nylon flexible composite film prepared in the embodiment 1 of the invention is better.
Fig. 3 is a graph of silver selenide nanostructures made by reactions at different temperatures, where fig. 3(a) is a uniform silver selenide nanowire made by a room temperature reaction and (b) is a multi-scale silver selenide nanostructure made by a reaction at 40 ℃, and this non-uniform nanostructure made by example 1 of the present invention is more conducive to complete sintering than it is to complete sintering.
Fig. 4 is an SEM image of the hot-pressed silver selenide/nylon flexible composite thin film manufactured in example 1, wherein fig. 4(b) is a partially enlarged view of fig. 4(a), and it can be seen that the manufactured film is very dense as a whole, contributing to the improvement of the electrical conductivity. In addition, the prepared film has holes with sizes from nanometer to micron, which is beneficial to improving the flexibility.
Fig. 5 is a digital photograph of a hot-pressed silver selenide/nylon flexible composite film prepared in example 1, which shows that it can achieve different degrees of bending and has flexibility.
Example 2:
a method for preparing a silver selenide/nylon flexible composite film with high thermoelectric performance comprises the steps of dispersing 20ml of selenium nanowire (Se) in Ethylene Glycol (EG) dispersion liquid (45mmol/L) and silver nitrate (AgNO)3Adding silver nitrate and selenium nanowire in a molar ratio of 2:1) and 80ml of ethylene glycol into a beaker, stirring for 1.5h at 40 ℃, centrifuging at a rotating speed of 4000r/min, extracting the obtained black precipitate, alternately adding deionized water and absolute ethyl alcohol, centrifuging at a rotating speed of 4000r/min for 3min, cleaning to remove impurities, dispersing the carefully cleaned black target product into 15ml of absolute ethyl alcohol after centrifuging, performing ultrasonic dispersion for 15min, then taking a nylon filter membrane as a substrate, performing vacuum suction filtration to obtain a silver selenide/nylon flexible membrane, and drying the obtained membrane in a vacuum drying oven at a temperature of 60 ℃ for 12 h. Taking out the film and hot pressing the filmHot pressing at 200 deg.C and 1MPa for 30min to obtain power factor of 1605 μ W m-1K-2The silver selenide/nylon flexible composite film.
Example 3
A method for preparing a silver selenide/nylon flexible composite film with high thermoelectric performance comprises the steps of dispersing 20ml of selenium nanowire (Se) in Ethylene Glycol (EG) dispersion liquid (10mmol/L) and silver nitrate (AgNO)3Adding silver nitrate and selenium nanowire in a molar ratio of 4:1) and 80ml of ethylene glycol into a beaker, stirring for 2.5 hours at 40 ℃, centrifuging at a rotating speed of 4000r/min, extracting the obtained black precipitate, alternately adding deionized water and absolute ethyl alcohol, centrifuging at a rotating speed of 4000r/min for 5 minutes, cleaning to remove impurities, dispersing the carefully cleaned black target product into 15ml of absolute ethyl alcohol after centrifuging, performing ultrasonic dispersion for 15 minutes, then taking a nylon filter membrane with the aperture of 0.22 mu m as a substrate, performing vacuum filtration to obtain a silver selenide/nylon flexible membrane, and drying the obtained membrane in a vacuum drying oven at the temperature of 70 ℃ for 10 hours. And taking out the film, and then carrying out hot pressing on the film for 30min at 250 ℃ under 4MPa to obtain the silver selenide/nylon flexible composite film.
Example 4
A method for preparing a silver selenide/nylon flexible composite film with high thermoelectric performance comprises the steps of dispersing 20ml of selenium nanowire (Se) in Ethylene Glycol (EG) dispersion liquid (20mmol/L) and silver nitrate (AgNO)3Adding silver nitrate and selenium nanowire in a molar ratio of 3:1) and 80ml of ethylene glycol into a beaker, stirring for 2 hours at 40 ℃, centrifuging at a rotating speed of 4000r/min, extracting the obtained black precipitate, alternately adding deionized water and absolute ethyl alcohol, centrifuging at a rotating speed of 4000r/min for 4 minutes, cleaning to remove impurities, dispersing the carefully cleaned black target product into 15ml of absolute ethyl alcohol after centrifuging, ultrasonically dispersing for 15 minutes, taking a nylon filter membrane with the pore diameter of 0.22 mu m as a substrate, performing vacuum filtration to obtain a silver selenide/nylon flexible membrane, and drying the obtained membrane in a vacuum drying oven at a temperature of 65 ℃ for 11 hours. And taking out the film, and then carrying out hot pressing on the film for 30min at 220 ℃ and 2MPa to obtain the silver selenide/nylon flexible composite film.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. A preparation method for optimizing thermoelectric performance of a silver selenide/nylon flexible composite film is characterized by comprising the following steps:
(1) reacting selenium nanowire serving as a template with silver nitrate in an ethylene glycol solvent at 40 ℃, and separating to obtain a silver selenide nanostructure;
(2) dispersing the silver selenide nanostructure in absolute ethyl alcohol, taking a nylon filter membrane as a substrate, performing suction filtration, and drying to obtain a nylon-silver selenide film;
(3) finally, carrying out hot-pressing treatment on the nylon-silver selenide film obtained in the step (2) to obtain a target product;
in the step (1), the reaction time is 1.5-2.5 h.
2. The preparation method for optimizing thermoelectric performance of the silver selenide/nylon flexible composite film as claimed in claim 1, wherein in the step (1), the selenium nanowire is synthesized by taking selenium dioxide as a selenium source and ascorbic acid as a reducing agent.
3. The preparation method for optimizing thermoelectric performance of the silver selenide/nylon flexible composite thin film as claimed in claim 1, wherein in the step (1), the molar ratio of silver nitrate to selenium nanowires is 2-4: 1.
4. The preparation method for optimizing thermoelectric performance of the silver selenide/nylon flexible composite thin film as claimed in claim 1, wherein in the step (1), the concentration of the selenium nanowires in the glycol solvent is 10-45 mmol/L.
5. The preparation method for optimizing thermoelectric performance of the silver selenide/nylon flexible composite thin film as claimed in claim 1, wherein in the step (1), the separation process specifically comprises: centrifuging at 4000r/min for 2-4min, removing supernatant, adding ethanol and deionized water into the centrifuge tube alternately, and centrifuging at 4000r/min for 2-4min to remove impurities.
6. The preparation method for optimizing thermoelectric performance of the silver selenide/nylon flexible composite thin film as claimed in claim 1, wherein in the step (2), the aperture of the nylon filter membrane is 0.22 μm.
7. The preparation method for optimizing thermoelectric property of the silver selenide/nylon flexible composite film as claimed in claim 1, wherein in the step (2), the drying temperature is 60-70 ℃ and the drying time is 10-12 h.
8. The preparation method for optimizing thermoelectric performance of the silver selenide/nylon flexible composite thin film as claimed in claim 1, wherein in the step (3), the hot pressing process conditions are as follows: hot pressing at 200-250 deg.C under 1-4MPa for 30 min.
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| CN111864045A (en) * | 2020-06-30 | 2020-10-30 | 同济大学 | Method for preparing high-performance polyvinylpyrrolidone/silver selenide/nylon flexible composite thermoelectric film |
| CN112670398B (en) * | 2020-12-24 | 2022-12-20 | 深圳热电新能源科技有限公司 | Flexible composite thermoelectric film and preparation method and application thereof |
| CN113224230B (en) * | 2021-04-27 | 2022-12-09 | 上海应用技术大学 | Flexible Ag 2 Preparation method of S/methyl cellulose composite thermoelectric film |
| CN114226210A (en) * | 2021-12-16 | 2022-03-25 | 华东师范大学 | Silver selenide thermoelectric composite film and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643297A (en) * | 2013-11-30 | 2014-03-19 | 孙永平 | Template method for preparing novel functional material nanometer Ag2Se |
| CN103774232A (en) * | 2012-10-18 | 2014-05-07 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of Ag2E nano wire |
| CN105110303A (en) * | 2015-07-23 | 2015-12-02 | 中国科学技术大学 | Nanowire and preparation method therefor |
| CN109293962A (en) * | 2018-09-19 | 2019-02-01 | 同济大学 | A kind of preparation method of high thermoelectricity capability silver selenide/flexible nylon laminated film |
| CN110061121A (en) * | 2019-03-27 | 2019-07-26 | 同济大学 | A kind of preparation method of polyvinylpyrrolidone/silver/silver telluride ternary flexible compound thermal electric film |
| CN110364616A (en) * | 2019-07-30 | 2019-10-22 | 中国科学院深圳先进技术研究院 | A kind of telluride silver nanowires flexible thermal conductive film and preparation method thereof welded at room temperature |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014500615A (en) * | 2010-10-19 | 2014-01-09 | カリフォルニア インスティテュート オブ テクノロジー | Self-tuning of carrier concentration for high thermoelectric performance |
| US9882108B2 (en) * | 2015-09-08 | 2018-01-30 | The Regents Of The University Of California | Nanostructured layers of thermoelectric materials |
-
2019
- 2019-10-29 CN CN201911036027.5A patent/CN110828651B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774232A (en) * | 2012-10-18 | 2014-05-07 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of Ag2E nano wire |
| CN103643297A (en) * | 2013-11-30 | 2014-03-19 | 孙永平 | Template method for preparing novel functional material nanometer Ag2Se |
| CN105110303A (en) * | 2015-07-23 | 2015-12-02 | 中国科学技术大学 | Nanowire and preparation method therefor |
| CN109293962A (en) * | 2018-09-19 | 2019-02-01 | 同济大学 | A kind of preparation method of high thermoelectricity capability silver selenide/flexible nylon laminated film |
| CN110061121A (en) * | 2019-03-27 | 2019-07-26 | 同济大学 | A kind of preparation method of polyvinylpyrrolidone/silver/silver telluride ternary flexible compound thermal electric film |
| CN110364616A (en) * | 2019-07-30 | 2019-10-22 | 中国科学院深圳先进技术研究院 | A kind of telluride silver nanowires flexible thermal conductive film and preparation method thereof welded at room temperature |
Non-Patent Citations (2)
| Title |
|---|
| "A simple synthesis of Ag2+xSe nanoparticles and their thin films for electronic device applications";Duc Quy Vo等;《Korean J. Chem. Eng》;20150917;第306页第1栏第25行-第308页第2栏第16行 * |
| "High performance n-type Ag2Se film on nylon membrane for flexible thermoelectric power generator";Yufei Ding等;《Nature communications》;20190219;第10卷;第1-7页 * |
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