CN115260761A - Polyethyleneimine modified carbon nanotube composite film and preparation method and application thereof - Google Patents
Polyethyleneimine modified carbon nanotube composite film and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a polyethyleneimine modified carbon nanotube composite film and a preparation method and application thereof. The polyethyleneimine modified carbon nanotube composite film provided by the invention is an n-type carbon nanotube composite film, has good flexibility and higher power factor, and has better application prospect in the field of flexible wearable thermoelectric equipment.
Description
Technical Field
The invention belongs to the technical field of organic high molecular compounds using carbon elements as mixed ingredients, and particularly relates to a polyethyleneimine modified carbon nanotube composite film as well as a preparation method and application thereof.
Background
The thermoelectric material is an energy material which realizes the direct conversion of heat energy and electric energy by depending on the movement of carriers in the solid, and the thermoelectric material in the portable intelligent electronic device generates electricity by utilizing the temperature difference between the body temperature and the environment, thereby providing an effective solution for the self-powered technology.
Conversion efficiency ZT = S of thermoelectric material2Sigma T/kappa, (where S, sigma, T, kappa are Seebeck coefficient, electrical conductivity, absolute temperature and thermal conductivity, respectively), where S2σ is defined as the power factor PF. The Seebeck coefficient may be positive (carriers are holes, p-type) or negative (carriers are electrons, n-type).
Conventional thermoelectric materials are generally inorganic materials, typically Bi2Te3、PbTe、Sb2Te3And the like, but the problems of high cost, high toxicity, difficult processing and the like exist, and the application of the thermoelectric material in wearable equipment is limited. The organic polymer thermoelectric material has the advantages of low cost, low toxicity, good processability and the like, and particularly, the organic polymer thermoelectric material is easy to prepare into a flexible device, thereby providing good support for the design and practical application of wearable equipment.
Among organic polymer thermoelectric materials, polyethyleneimine (PEI) is not only easy to prepare and has various structures, but also has a plurality of nitrogen atoms available for doping with carbon nanotubes to improve the electrical conductivity and mechanical properties of the carbon nanotubes, and thus has received attention from researchers. But the thermoelectric material prepared based on polyethyleneimine has poor thermoelectric performance and low optimal power factor.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a polyethyleneimine modified carbon nanotube composite film, and a preparation method and application thereof.
The technical scheme of the invention is as follows:
a polyethyleneimine modified carbon nanotube composite film is obtained by uniformly compounding polyethyleneimine and single-walled carbon nanotubes.
The invention also comprises a preparation method of the polyethyleneimine modified carbon nanotube composite film, which comprises the following specific steps:
1) Dissolving polyethyleneimine in absolute ethyl alcohol to obtain a polyethyleneimine solution, adding single-walled carbon nanotubes into the polyethyleneimine solution, ultrasonically dispersing the single-walled carbon nanotubes uniformly, and then fully and magnetically stirring the mixture at room temperature to obtain a mixed solution;
2) Fully shearing the mixed solution obtained in the step 1) by using a handheld homogenizer, then carrying out reduced pressure filtration to obtain a black filter membrane, and carrying out vacuum drying on the obtained black filter membrane to obtain the polyethyleneimine modified carbon nanotube composite membrane.
According to the scheme, the polyethyleneimine obtained in the step 1) is branched polyethyleneimine, and the weight-average molecular weight of the polyethyleneimine is 3000-20000.
According to the scheme, the concentration of polyethyleneimine in the polyethyleneimine solution in the step 1) is 0.18-6.68 mg/mL, and the mass ratio of the polyethyleneimine to the single-walled carbon nanotube is (0.1-4): 1.
according to the scheme, the ultrasonic dispersion time in the step 1) is 25-35 min, and the power is 100-200W.
According to the scheme, the magnetic stirring time in the step 1) is 24-48 h, and the stirring speed is 1300-2000 rpm.
According to the scheme, the shearing time in the step 2) is 3-7 min, the shearing rate is 5000-20000 rpm, and the shearing power is 180-200W.
According to the scheme, the vacuum drying temperature in the step 2) is 45-80 ℃, the vacuum degree is 0.09-0.1 MPa, and the vacuum drying time is 4-12 h.
According to the scheme, the thickness of the polyethyleneimine modified carbon nanotube composite film in the step 2) is 0.0012-0.0018 cm.
The invention also comprises the application of the polyethyleneimine modified carbon nanotube composite film in thermoelectric materials.
The carbon nanotubes in the polyethyleneimine modified carbon nanotube composite film prepared by the invention are successfully doped, the branched PEI uniformly covers the carbon nanotube bundle, the PEI contains more amino groups, and N atoms on the amino groups provide a large number of electronic carriers, so that a proper amount of doped PEI is helpful for improving the conductivity of the composite material, and when the content of PEI is too low, the carriers in the system are still holes as the leading factor. When the content of PEI is increased, the current carriers in the system are dominated by electrons, and with the increase of the amount of PEI, the number of the current carriers is increased, and the conductivity of the material is improved. When the PEI is excessive, it acts as an insulating substance to cover the carbon nanotube bundle and affects the conductivity. When the concentration of doped PEI is increased in a proper range, the probability of covering the carbon nano tube is increased, the interface between PEI and the carbon nano tube is increased, the energy filtering effect is increased, and therefore the Seebeck coefficient of the composite material is improved.
Has the beneficial effects that: 1. the polyethyleneimine modified carbon nanotube composite film provided by the invention is an n-type carbon nanotube composite film, has good flexibility and higher power factor, and has better application prospect in the field of flexible wearable thermoelectric equipment; 2. the preparation method disclosed by the invention is simple in steps, green and environment-friendly, and good in repeatability.
Drawings
FIG. 1 is an SEM image of a polyethyleneimine-modified carbon nanotube composite film prepared in comparative example 2 of the present invention;
FIG. 2 is an SEM image of a polyethyleneimine-modified carbon nanotube composite film prepared in example 3 of the present invention;
fig. 3 is a photograph of the polyethyleneimine-modified carbon nanotube composite film prepared in example 2 of the present invention.
Detailed Description
For a better understanding of the present invention, the following examples are given for the purpose of illustration and are not intended to limit the present invention.
The single-walled carbon nanotubes used in the comparative examples and examples of the present invention have a diameter of 1 to 3nm and a length of 5 to 15 μm.
Comparative example 1
A carbon nanotube film is prepared by the following specific steps:
1) Adding 10mg of single-walled carbon nanotube into 6mL of absolute ethyl alcohol, performing ultrasonic dispersion for 30min at the ultrasonic power of 100W, and magnetically stirring for 24h at room temperature at the stirring speed of 1500rpm to obtain a carbon nanotube dispersion solution;
2) Shearing the carbon nanotube dispersion liquid obtained in the step 1) for 3min by using a handheld homogenizer, wherein the shearing rate is 5000rpm, the shearing power is 180W, then carrying out reduced pressure filtration to obtain a black filter membrane, and drying the obtained black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12h to obtain a carbon nanotube film with the thickness of 0.0012 cm.
Through tests, the carbon nanotube film obtained in the comparative example is a p-type single-walled carbon nanotube film, the conductivity of the film is 51526.3S/m, and the Seebeck coefficient is 59.8 mu V/K.
Comparative example 2
A polyethyleneimine modified carbon nanotube composite film is prepared by the following specific steps:
1) Dissolving 10mg of branched polyethyleneimine (weight average molecular weight 10000) in 6mL of absolute ethanol to obtain a polyethyleneimine solution with the mass concentration of 1.67mg/mL, then adding 10mg of single-walled carbon nanotubes into the obtained polyethyleneimine solution, performing ultrasonic dispersion for 30min, wherein the ultrasonic power is 100W, and then performing magnetic stirring at room temperature for 12h, wherein the stirring speed is 1500rpm to obtain a mixed solution;
2) Shearing the mixed solution obtained in the step 1) for 5min by using a handheld homogenizer, wherein the shearing power is 180W. And then carrying out reduced pressure filtration to obtain a black filter membrane, and drying the black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12 hours to obtain the polyethyleneimine modified carbon nanotube composite film with the thickness of 0.0015 cm.
Through tests, the polyethyleneimine modified carbon nanotube composite film prepared by the embodiment is n-type, the conductivity of the film is 29858.54S/m, and the Seebeck coefficient is-55.89 mu V/K.
Fig. 1 is an SEM image of the polyethyleneimine modified carbon nanotube composite film prepared in this comparative example. As can be seen, the carbon nanotube network has obvious PEI agglomeration phenomenon.
Example 1
A polyethyleneimine modified carbon nanotube composite film is specifically prepared by the following steps:
1) Dissolving 1.11mg of branched polyethyleneimine (weight average molecular weight 10000) in 6mL of absolute ethyl alcohol to obtain a polyethyleneimine solution with the mass concentration of 0.19mg/mL, then adding 10mg of single-walled carbon nanotubes into the polyethyleneimine solution, performing ultrasonic dispersion for 30min with the ultrasonic power of 100W, and then performing magnetic stirring at room temperature for 24h at the stirring speed of 1500rpm to obtain a mixed solution;
2) Shearing the mixed solution obtained in the step 1) for 3min by using a handheld homogenizer, wherein the shearing rate is 5000rpm, the shearing power is 180W, then carrying out reduced pressure filtration to obtain a black filter membrane, and drying the obtained black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12h to obtain the polyethyleneimine modified carbon nanotube composite film with the thickness of 0.0013 cm.
Through tests, the polyethyleneimine modified carbon nanotube composite film prepared by the embodiment shows p-type characteristics, the conductivity of the film is 37901.94S/m, and the Seebeck coefficient is 54.91 mu V/K.
Example 2
A polyethyleneimine modified carbon nanotube composite film is specifically prepared by the following steps:
1) Dissolving 5.38mg of branched polyethyleneimine (weight average molecular weight 10000) in 6mL of absolute ethyl alcohol to obtain a polyethyleneimine solution with the mass concentration of 0.90mg/mL, then adding 10mg of single-walled carbon nanotubes into the polyethyleneimine solution, performing ultrasonic dispersion for 30min with the ultrasonic power of 100W, and then performing magnetic stirring at room temperature for 24h at the stirring speed of 1500rpm to obtain a mixed solution;
2) Shearing the mixed solution obtained in the step 1) for 3min by using a handheld homogenizer, wherein the shearing rate is 5000rpm, the shearing power is 180W, then carrying out reduced pressure filtration to obtain a black filter membrane, and drying the obtained black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12h to obtain the polyethyleneimine modified carbon nanotube composite film with the thickness of 0.0015 cm.
Through tests, the polyethyleneimine modified carbon nanotube composite film prepared by the embodiment has an n-type characteristic, the conductivity of the film is 68568.6S/m, and the Seebeck coefficient is-47.4 mu V/K.
Example 3
A polyethyleneimine modified carbon nanotube composite film is specifically prepared by the following steps:
1) Dissolving 10mg of branched polyethyleneimine (weight average molecular weight 10000) in 6mL of absolute ethanol to obtain a polyethyleneimine solution with the mass concentration of 1.67mg/mL, then adding 10mg of single-walled carbon nanotubes into the obtained polyethyleneimine solution, performing ultrasonic dispersion for 30min, wherein the ultrasonic power is 100W, and then performing magnetic stirring at room temperature for 24h at the stirring speed of 1500rpm to obtain a mixed solution;
2) Shearing the mixed solution obtained in the step 1) for 5min by using a handheld homogenizer, wherein the shearing rate is 5000rpm, the shearing power is 180W, then carrying out reduced pressure filtration to obtain a black filter membrane, and drying the obtained black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12h to obtain the polyethyleneimine modified carbon nanotube composite film with the thickness of 0.0015 cm.
Tests prove that the polyethyleneimine modified carbon nanotube composite film prepared by the embodiment is n-type, the conductivity of the film is 30720.13S/m, and the Seebeck coefficient is-80.89 mu V/K.
As shown in fig. 2, which is an SEM image of the polyethyleneimine-modified carbon nanotube composite film prepared in this example, it can be seen that there is a significant good network structure formed by bundles in the carbon nanotube network, the particulate matter is a catalyst used in the preparation of the carbon nanotube, and the agglomeration phenomenon of the modifying agent PEI does not occur in the image, which indicates that PEI is successfully dissolved in the solvent and uniformly distributed in the entire carbon nanotube network.
Fig. 3 is a photograph of the polyethyleneimine-modified carbon nanotube composite film prepared in this example, and it can be seen that the film has excellent flexibility and can withstand a high level of bending.
Example 4
A polyethyleneimine modified carbon nanotube composite film is prepared by the following specific steps:
1) Dissolving 18.57mg of branched polyethyleneimine (with the weight-average molecular weight of 10000) in 6mL of absolute ethanol to obtain a polyethyleneimine solution with the mass concentration of 3.10mg/mL, then adding 10mg of single-walled carbon nanotubes into the obtained polyethyleneimine solution, performing ultrasonic dispersion for 30min with the ultrasonic power of 100W, and then performing magnetic stirring at room temperature for 24h at the stirring speed of 1500rpm to obtain a mixed solution;
2) Shearing the mixed solution obtained in the step 1) for 3min by using a handheld homogenizer with the shearing power of 180W, then filtering under reduced pressure to obtain a black filter membrane, and drying the obtained black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12h to obtain the polyethyleneimine modified carbon nanotube composite film with the thickness of 0.0014 cm.
Through tests, the polyethyleneimine modified carbon nanotube composite film prepared by the embodiment is n-type, the conductivity of the film is 28666.9S/m, and the Seebeck coefficient is-56.6 mu V/K.
Example 5
A polyethyleneimine modified carbon nanotube composite film is specifically prepared by the following steps:
1) Dissolving 40mg of branched polyethyleneimine (with the weight-average molecular weight of 10000) in 6mL of absolute ethanol to obtain a polyethyleneimine solution with the mass concentration of 6.67mg/mL, then adding 10mg of single-walled carbon nanotubes into the obtained polyethyleneimine solution, performing ultrasonic dispersion for 30min with the ultrasonic power of 100W, and then performing magnetic stirring at room temperature for 24h at the stirring speed of 1500rpm to obtain a mixed solution;
2) Shearing the mixed solution obtained in the step 1) for 5min by using a handheld homogenizer with the shearing power of 180W, then filtering under reduced pressure to obtain a black filter membrane, and drying the obtained black filter membrane in a vacuum oven with the vacuum degree of 0.09MPa and the temperature of 60 ℃ for 12h to obtain the polyethyleneimine modified carbon nanotube composite film with the thickness of 0.0015 cm.
Tests prove that the polyethyleneimine modified carbon nanotube composite film prepared by the embodiment is n-type, the conductivity of the film is 25566.2S/m, and the Seebeck coefficient is-36.0 muV/K.
The thermoelectric properties of the film samples prepared in comparative examples 1-2 and examples 1-5 of the present invention are shown in Table 1.
TABLE 1
As can be seen by comparing the data in table 1, as the doping amount of PEI in the polyethyleneimine-modified carbon nanotube composite film increases, the conductivity of the composite film increases first, and when the doping ratio of PEI is 0.5. This is because PEI itself contains a large number of amino groups, and N atoms on the amino groups provide a large number of carriers, thereby increasing conductivity. However, when the content of PEI as an insulating material is too large, it hinders the electrical transport of carriers, and adversely affects the conductivity of the composite film. When the doping ratio of the PEI is 0.5. When the doping concentration is too high, the seebeck coefficient is negatively correlated with the carrier concentration, and thus the seebeck coefficient becomes small.
The invention can be realized by all raw materials and upper and lower limit values and interval values thereof, and the invention can be realized by the lower limit values and the interval values of the process parameters (such as temperature, time and the like), and the examples are not listed. It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the inventive concept of the present invention.
Claims (10)
1. The polyethyleneimine modified carbon nanotube composite film is characterized by being prepared by uniformly compounding polyethyleneimine and single-walled carbon nanotubes.
2. The preparation method of the polyethyleneimine modified carbon nanotube composite film according to claim 1, which is characterized by comprising the following steps:
1) Dissolving polyethyleneimine in absolute ethyl alcohol to obtain a polyethyleneimine solution, adding single-walled carbon nanotubes into the obtained polyethyleneimine solution, performing ultrasonic dispersion uniformly, and performing sufficient magnetic stirring at room temperature to obtain a mixed solution;
2) Fully shearing the mixed solution obtained in the step 1) by using a handheld homogenizer, then carrying out reduced pressure filtration to obtain a black filter membrane, and carrying out vacuum drying on the obtained black filter membrane to obtain the polyethyleneimine modified carbon nanotube composite membrane.
3. The method for preparing the polyethyleneimine modified carbon nanotube composite film according to claim 2, wherein the polyethyleneimine obtained in step 1) is branched polyethyleneimine, and the weight-average molecular weight of the polyethyleneimine is 3000 to 20000.
4. The method for preparing the polyethyleneimine-modified carbon nanotube composite film according to claim 2, wherein the concentration of polyethyleneimine in the polyethyleneimine solution in step 1) is 0.18 to 6.68mg/mL, and the mass ratio of polyethyleneimine to single-walled carbon nanotubes is 0.1 to 4:1.
5. the method for preparing the polyethyleneimine modified carbon nanotube composite film according to claim 2, wherein the ultrasonic dispersion time in the step 1) is 25-35 min, and the power is 100-200W.
6. The method for preparing the polyethyleneimine modified carbon nanotube composite film according to claim 2, wherein the magnetic stirring time in the step 1) is 24-48 h, and the stirring speed is 1300-2000 rpm.
7. The method for preparing the polyethyleneimine modified carbon nanotube composite film according to claim 2, wherein in step 2), the shearing time is 3 to 7min, the shearing rate is 5000 to 20000rpm, and the shearing power is 180 to 200W.
8. The method for preparing the polyethyleneimine modified carbon nanotube composite film according to claim 2, wherein the vacuum drying temperature in step 2) is 45-80 ℃, the vacuum degree is 0.09-0.1 MPa, and the vacuum drying time is 4-12 h.
9. The method for preparing the polyethyleneimine-modified carbon nanotube composite film according to claim 2, wherein the thickness of the polyethyleneimine-modified carbon nanotube composite film in the step 2) is 0.0012 to 0.0018cm.
10. The use of the polyethyleneimine modified carbon nanotube composite film of claim 1 in thermoelectric materials.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101808827B1 (en) * | 2016-06-16 | 2017-12-14 | 한국화학연구원 | Thermoelectric material compositions having high electrical conductivity and methods for preparing the same |
| CN110311031A (en) * | 2019-06-04 | 2019-10-08 | 武汉工程大学 | A kind of N-shaped flexibility thermal electric film and preparation method thereof |
| CN111223982A (en) * | 2020-03-03 | 2020-06-02 | 西安交通大学 | Preparation method of n-type multi-walled carbon nanotube thermoelectric material with stable air and high performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101808827B1 (en) * | 2016-06-16 | 2017-12-14 | 한국화학연구원 | Thermoelectric material compositions having high electrical conductivity and methods for preparing the same |
| CN110311031A (en) * | 2019-06-04 | 2019-10-08 | 武汉工程大学 | A kind of N-shaped flexibility thermal electric film and preparation method thereof |
| CN111223982A (en) * | 2020-03-03 | 2020-06-02 | 西安交通大学 | Preparation method of n-type multi-walled carbon nanotube thermoelectric material with stable air and high performance |
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