CN109713938A - A kind of graphene thermal electrolemma, thermoelectric generator and preparation method thereof - Google Patents
A kind of graphene thermal electrolemma, thermoelectric generator and preparation method thereof Download PDFInfo
- Publication number
- CN109713938A CN109713938A CN201910108216.2A CN201910108216A CN109713938A CN 109713938 A CN109713938 A CN 109713938A CN 201910108216 A CN201910108216 A CN 201910108216A CN 109713938 A CN109713938 A CN 109713938A
- Authority
- CN
- China
- Prior art keywords
- graphene
- graphene thermal
- electrolemma
- salt
- thermal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of graphene thermal electrolemmas, thermoelectric generator and preparation method thereof.The present invention connects to form thermoelectric unit using electronegativity graphene thermal electrolemma with electropositivity graphene thermal electrolemma, then is concatenated by several thermoelectric units, concatenates between the series side inside each thermoelectric unit and thermoelectric unit and applies temperature difference between position, forms thermoelectric generator.Wherein graphene thermal electrolemma is to form electronegativity or electropositive graphene thermal conductive film using the strong base-weak acid salt or strong acid weak base salt molecules of salt of the doping of graphene burden.The thermal electric film can realize higher doping efficiency and chemical stability.Graphene thermal film material and graphene thermal electric generator simple process and low cost of the invention is suitable for producing in enormous quantities.
Description
Technical field
The present invention relates to a kind of pyroelectric film and thermoelectric generator more particularly to a kind of graphene thermal electrolemmas, thermoelectric generator
And preparation method thereof, belong to technical field of material.
Background technique
After grapheme material was stablized prepare for the first time in 2004, more and more research discoveries are monatomic
The grapheme material of layer has excellent electricity, optical property, such as high carrier mobility, high Young's modulus.Together
When, research finds nanoscale graphene theoretically and can have great Seebeck coefficient, experimentally finds multi-layer graphene
Film (1000-1500 DEG C) power factor (54.5 μ W cm with superelevation at high temperature-1K-2), therefore it is following potential for heat
Electric material field.
Prepare thermo-electric device, it is necessary to which the thermoelectric material for realizing cavity type and electron type is just able to achieve thermal energy in this way
It maximally utilizes.The fermi level height of graphene is adjustable, and carrier type can greatly be adjusted by chemical doping.
In addition, forming multi-layer graphene film using graphene, strong mechanical performance and chemical stability can be macroscopically being shown.?
On the basis of this, using strong base-weak acid salt and strong acid weak base salt to the absorption characteristic in hole and electronics, make multi-layer graphene cladding special
The graphene thermal electrolemma of cavity type and electron type may be implemented in fixed salt.It is designed again by structure by cavity type and electronics later
Flexible graphene thermo-electric device can be made in the graphite pyroelectric film series connection of type.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of graphene thermal electrolemma, thermoelectric generator and
Preparation method.
The technical solution adopted by the invention is as follows:
A kind of graphene thermal electric generator, is concatenated by several thermoelectric units, and thermoelectric unit includes an electronegativity graphite
Alkene pyroelectric film and an electropositivity graphene thermal electrolemma, and the two one end is connected, electronegativity graphene thermal electrolemma in each thermoelectric unit
Concatenated with the electropositivity graphene thermal electrolemma in adjacent thermoelectric unit, and electropositivity graphene thermal electrolemma then with another adjacent thermoelectricity
Electronegativity graphene thermal electrolemma in unit concatenates, and head and the tail two panels graphene thermal electrolemma picks out lead in entire generator, in heat
There is temperature gradient between the series side between series side and each thermoelectric unit in electric unit.
In above-mentioned technical proposal, further, electropositivity graphene thermal electrolemma, electronegativity graphene thermal in each thermoelectric unit
Electrolemma stacks together and is equipped with insulating layer therebetween, and all thermoelectric units are sequentially stacked together, and adjacent thermoelectric unit
Between also be provided with insulating layer.
Further, the insulating layer is flexible insulating material.I.e. entire thermoelectric generator is made for Grazing condition layer.
Further, the graphene thermal electrolemma can be made with the following method: by salt compounds and graphene
It is placed in solvent, forms suspension, pass through evaporation after ultrasonic disperse or filter, salt compounds and graphene and solvent are carried out
Separation obtains pyroelectric film after dry；The salt compounds are strong acid weak base salt or strong acid weak base salt, when for strong acid weak base
When salt, electropositivity graphene thermal electrolemma is made and obtains electronegativity graphene thermal electrolemma when for strong base-weak acid salt.
Further, the molar ratio of the salt compounds and graphene is 0.01-0.1.The solvent be water,
One or more of ethyl alcohol, IPA, acetone, NMP, DMF.The strong acid weak base salt is usually by Fe3+、Fe2+、Cu2+、Cu+、
Al3+With SO4 2-、Cl-、NO3 -、ClO4 -The salt of formation；The strong base-weak acid salt is usually by Na+、K+、Ca2+、Li+With CO3 2-、
CH3COO-、HCO3 -The salt of formation；
The invention has the advantages that:
Graphene thermal electric generator of the invention using graphene thermal electrolemma constitute thermoelectric unit concatenation, by electropositivity,
Electronegativity pyroelectric film combines, and improves the utilization rate to thermal energy, generating efficiency with higher.And the generator of the structure can
Flexible, small size device is made, it is conducive to production and application.Graphene thermal electrolemma utilizes the strong base weak acid of graphene burden doping
The process of salt or strong acid weak base salt molecules of salt, preparation does not have the toxicity of conventional thermoelectric materials, and production process is simple, is easy to high-volume
Production.
Detailed description of the invention
Fig. 1 is electronegativity in graphene thermal electric generator, electropositivity graphene thermal electrolemma series connection schematic diagram；
Wherein 1 is electronegativity graphene thermal electrolemma, and 2 be electropositivity graphene thermal electrolemma.
Fig. 2 is a kind of structural schematic diagram of graphene thermal electric generator of the invention.
Fig. 3 is the electron scanning micrograph of graphene thermal electrolemma.
Fig. 4 is the power factor of electropositivity graphene thermal electrolemma.
Specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
As shown in Figure 1, graphene thermal electric generator of the invention is made of several thermoelectric units concatenation, each thermoelectric unit
It is connected by electronegativity graphene thermal electrolemma one end and electropositivity graphene thermal electrolemma one end, the other end of two pyroelectric films is used for and it
Pyroelectric film in his thermoelectric unit connects, and the electricity in each thermoelectric unit in electronegativity graphene thermal electrolemma and adjacent thermoelectric unit is just
Property graphene thermal electrolemma concatenation, and electropositivity graphene thermal electrolemma then with the electronegativity graphene thermal in another adjacent thermoelectric unit
Electrolemma concatenates, and head and the tail two panels graphene thermal electrolemma picks out lead in entire generator.
There is temperature gradient between the series side between series side and each thermoelectric unit in thermoelectric unit, utilize pyroelectric effect
Realize power generation.
In addition, the electric generator structure can be also further improved, each pyroelectric film is made to stack together, and is all provided between each pyroelectric film
Set flexible insulating layer, such as Fig. 2.
The electronegativity graphene thermal electrolemma and electropositivity graphene thermal electrolemma can be made with the following method: by salt
Class compound and graphene are placed in solvent, form suspension, by evaporation or are filtered after ultrasonic disperse, by salt compounds and
Graphene is separated with solvent, obtains pyroelectric film after dry；The salt compounds are that strong acid weak base salt or strong acid are weak
Alkali salt is made electropositivity graphene thermal electrolemma and obtains electronegativity graphite when for strong base-weak acid salt when for strong acid weak base salt
Alkene pyroelectric film.
Embodiment 1:
1) it is 0.01 according to copper sulphate and graphene molar ratio, graphene and copper sulphate is put into container；
2) water is added and obtains graphene, copper sulphate mixed-powder suspension；
3) suspension for obtaining step 2) carries out ultrasonic treatment 30 minutes；
4) graphene, iron chloride and water are separated by filtration, then are bulldozed on the glass sheet, dried at 120 DEG C, from sheet glass
It scrapes, obtains electropositivity graphene thermal electrolemma.
Embodiment 2:
1) it is 0.1 according to lithium carbonate and graphene molar ratio, graphene and lithium carbonate is put into container；
2) ethyl alcohol is added and IPA mixed solvent obtains graphene, lithium carbonate mixed-powder suspension；
3) suspension for obtaining step 2) carries out ultrasonic treatment 10 seconds；
4) graphene, lithium carbonate and solvent are centrifuged, then are bulldozed on stainless steel, after 100 DEG C are dry,
It is scraped from stainless steel plate, obtains electronegativity graphene thermal electrolemma.
Embodiment 3:
1) it is 0.01 according to sodium acetate and graphene molar ratio, graphene and sodium acetate is put into container；
2) NMP is added and obtains graphene, sodium acetate mixed-powder suspension；
3) suspension for obtaining step 2) carries out ultrasonic treatment 1 minute；
4) suspension painting is dried on the glass sheet, is being scraped from sheet glass, is obtaining electronegativity graphene thermal electrolemma, stone
The electron scanning micrograph of black alkene pyroelectric film is as shown in Figure 3.
Fig. 4 is the power factor side view of electropositivity graphene thermal electrolemma obtained, it can be seen that the stone that the present invention obtains
Power factor can reach 9.5 μ W cm to black alkene pyroelectric film at room temperature-1K-2, the level of significantly larger than existing graphene assembling film
(about 0.5 μ W cm-1K-2), graphene thermal electrolemma of the invention is provided simultaneously with higher conductivity (~1400S cm-1) and it is higher
Seebeck coefficient (~90 μ V K-1), the present invention is based on the pyroelectric films using thermoelectric generator made from special construction, Ke Yishi
Existing flexible, small size, is conducive to industrialized production and application.
Claims (9)
1. a kind of graphene thermal electric generator, which is characterized in that concatenated by several thermoelectric units, thermoelectric unit includes an electricity
Negativity graphene thermal electrolemma and an electropositivity graphene thermal electrolemma, and the two one end is connected, electronegativity graphite in each thermoelectric unit
Alkene pyroelectric film is concatenated with the electropositivity graphene thermal electrolemma in adjacent thermoelectric unit, and electropositivity graphene thermal electrolemma then with it is another
Electronegativity graphene thermal electrolemma in adjacent thermoelectric unit concatenates, and head and the tail two panels graphene thermal electrolemma, which picks out, in entire generator draws
Line has temperature gradient between the series side in thermoelectric unit and the series side between each thermoelectric unit.
2. graphene thermal electric generator according to claim 1, which is characterized in that electropositivity graphene in each thermoelectric unit
Pyroelectric film, electronegativity graphene thermal electrolemma stack together and are equipped with insulating layer therebetween, and all thermoelectric units are sequentially stacked
Together, and between adjacent thermoelectric unit it also is provided with insulating layer.
3. graphene thermal electric generator according to claim 2, which is characterized in that the insulating layer is flexible insulation material
Material.
4. graphene thermal electric generator according to claim 1, which is characterized in that the graphene thermal electrolemma is using such as
Lower section method is made: salt compounds and graphene being placed in solvent, suspension is formed, passes through evaporation after ultrasonic disperse or takes out
Filter, salt compounds and graphene are separated with solvent, obtain pyroelectric film after dry；The salt compounds are strong acid
Electropositivity graphene thermal electrolemma is made when for strong acid weak base salt in weak base salt or strong acid weak base salt, when for strong base-weak acid salt
When, obtain electronegativity graphene thermal electrolemma.
5. graphene thermal electric generator according to claim 4, which is characterized in that the salt compounds and graphene
Molar ratio be 0.01-0.1.
6. graphene thermal electric generator according to claim 4, which is characterized in that the solvent be water, ethyl alcohol, IPA,
One or more of acetone, NMP, DMF.
7. graphene thermal electric generator according to claim 4, which is characterized in that the strong acid weak base salt is by Fe3+、
Fe2+、Cu2+、Cu+、Al3+With SO4 2-、Cl-、NO3 -、ClO4 -The salt of formation.
8. graphene thermal electric generator according to claim 4, which is characterized in that the strong base-weak acid salt is by Na+、K+、Ca2+、Li+With CO3 2-、CH3COO-、HCO3 -The salt of formation.
9. a kind of graphene thermal electrolemma, which is characterized in that be made using method as described in claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108216.2A CN109713938A (en) | 2019-01-18 | 2019-01-18 | A kind of graphene thermal electrolemma, thermoelectric generator and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108216.2A CN109713938A (en) | 2019-01-18 | 2019-01-18 | A kind of graphene thermal electrolemma, thermoelectric generator and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109713938A true CN109713938A (en) | 2019-05-03 |
Family
ID=66263581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910108216.2A Pending CN109713938A (en) | 2019-01-18 | 2019-01-18 | A kind of graphene thermal electrolemma, thermoelectric generator and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109713938A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768510A (en) * | 2016-08-22 | 2018-03-06 | 中国科学院物理研究所 | A kind of electrothermal module and preparation method thereof |
| CN107924980A (en) * | 2015-08-31 | 2018-04-17 | 富士胶片株式会社 | Thermo-electric conversion module, the manufacture method of thermo-electric conversion module and heat-conducting substrate |
| CN107924981A (en) * | 2015-08-31 | 2018-04-17 | 富士胶片株式会社 | Thermoelectric conversion element |
| CN108701748A (en) * | 2016-03-10 | 2018-10-23 | 拓自达电线株式会社 | Thermoelectric conversion element |
-
2019
- 2019-01-18 CN CN201910108216.2A patent/CN109713938A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107924980A (en) * | 2015-08-31 | 2018-04-17 | 富士胶片株式会社 | Thermo-electric conversion module, the manufacture method of thermo-electric conversion module and heat-conducting substrate |
| CN107924981A (en) * | 2015-08-31 | 2018-04-17 | 富士胶片株式会社 | Thermoelectric conversion element |
| CN108701748A (en) * | 2016-03-10 | 2018-10-23 | 拓自达电线株式会社 | Thermoelectric conversion element |
| CN107768510A (en) * | 2016-08-22 | 2018-03-06 | 中国科学院物理研究所 | A kind of electrothermal module and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| SIRUI FENG等: "Quasi-industrially produced large-area microscale graphene flakes assembled film with extremely high thermoelectric power factor", 《NANO ENERGY》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Multifunctional 3D-MXene/PDMS nanocomposites for electrical, thermal and triboelectric applications | |
| Qiu et al. | Current progress in black phosphorus materials and their applications in electrochemical energy storage | |
| CN104916826A (en) | Silicon cathode material coated with graphene and preparation method thereof | |
| Kumar et al. | Cutting edge composite materials based on MXenes: Synthesis and electromagnetic interference shielding applications | |
| CN112072126A (en) | Mxene flexible self-supporting lithium-air battery positive electrode material, Mxene flexible composite film and preparation method thereof | |
| CN102760866B (en) | Preparation method of nitrogen-doped graphene | |
| CN102956864B (en) | A kind of preparation method of nitrating Graphene electrodes | |
| CN109706507B (en) | Two-dimensional MXene membrane with vertical pore channel structure and preparation method thereof | |
| CN103311428B (en) | A kind of preparation method of graphene/polyaniline thermal electric film | |
| CN105347334B (en) | A kind of graphene/mangano-manganic oxide composite and preparation method thereof | |
| CN109205743B (en) | Preparation method and application of carbon nanotube composite titanium oxide porous carbon material | |
| CN105949512A (en) | Intercalation assembly based boron nitride-graphene composite material as well as application and preparation method thereof | |
| Singh et al. | Electrochemical synthesis of graphene oxide and its application as counter electrode in dye sensitized solar cell | |
| CN107093703B (en) | A kind of preparation method of manganese dioxide/foam copper sodium-ion battery self-supporting cathode | |
| CN104934610A (en) | Preparation method of self-supporting flexible composite electrode material used by lithium ion battery | |
| Xiang et al. | Advances in the applications of graphene-based nanocomposites in clean energy materials | |
| CN109052367B (en) | Preparation method of pyridine nitrogen-enriched ultrathin carbon nanosheet material and metal composite material thereof | |
| Chen et al. | Cu-based materials as high-performance electrodes toward electrochemical energy storage | |
| CN104201006A (en) | Preparation method of carbon nanotube/manganese dioxide hybridization supercapacitor electrode material | |
| Otgonbayar et al. | Recent advances in two-dimensional MXene for supercapacitor applications: progress, challenges, and perspectives | |
| CN108183204A (en) | A kind of silicon nanometer sheet-graphene nanometer sheet composite material and preparation and application | |
| Lu et al. | Fabrication of doped SmBaCo2O5+ δ double perovskites for enhanced solar-driven interfacial evaporation | |
| CN108807008A (en) | A kind of lithium-ion capacitor nano whiskers flexibility lithium titanate/carbon nano tube/graphene composite material and preparation method | |
| CN103762356B (en) | Ni nano wire, NiO/Ni self-supported membrane and its preparation method and application | |
| CN109473649A (en) | A kind of sodium-ion battery composite negative pole material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190503 |