CN217690819U - Integrated device for enhancing capacitance of supercapacitor by solar energy light and heat - Google Patents
Integrated device for enhancing capacitance of supercapacitor by solar energy light and heat Download PDFInfo
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Abstract
The utility model discloses an integrated device of solar photothermal enhancement ultracapacitor system electric capacity. The device comprises a super capacitor, a heat insulation layer, a water delivery channel and a water container; the super capacitor is composed of a first electrode, a second electrode and a gel electrolyte, the first electrode and the second electrode are horizontally placed side by side, the first electrode and the second electrode are connected through the gel electrolyte and then are placed on a heat insulation layer, a groove for placing the gel electrolyte is formed in the middle of the heat insulation layer, a through hole is formed in the center of the bottom of the groove, a water delivery channel comprises a wetting layer equal to the diameter of the bottom of the groove, a vertical water delivery channel and a water absorption layer, the wetting layer is arranged at the bottom of the groove, the vertical water delivery channel is arranged in the through hole, and the water absorption layer is immersed in a water container. The utility model provides an integrated device is used for promoting ultracapacitor system's capacity with the heat of solar photothermal conversion, keeps efficient solar photothermal drive water evaporation to purify simultaneously, has realized the integration of energy collection, conversion and storage.
Description
The technical field is as follows:
the utility model relates to a solar photothermal conversion and electrochemical energy storage technical field, concretely relates to integrated device of solar photothermal enhancement ultracapacitor system electric capacity.
Background art:
the super capacitor is a device for efficiently storing and transferring energy, has the advantages of high power density, large capacity, long service life, high charge-discharge rate, economy, environmental protection and the like, and is widely applied to various energy fields. However, as other energy storage devices such as batteries, the capacity attenuation is severe when the energy storage device works in a low-temperature environment, which greatly limits the application of the energy storage device in low-temperature conditions such as high altitude and extremely cold regions and aerospace. When the super capacitor works in a low-temperature environment, the ion transmission in the super capacitor is greatly limited, the ionic conductivity of electrolyte is low, and ions are difficult to diffuse rapidly at the interface of an electrode and the electrode/electrolyte, so that the electrochemical performance is reduced, and sometimes even the super capacitor cannot work. There is a need to find an environmentally sustainable way to improve the low temperature performance of supercapacitors.
The solar energy has wide distribution range, is infinite, green and safe, and is clean energy which can replace the traditional fossil energy. Solar energy is widely applied to the fields of photovoltaic power generation, photocatalysis, photo-thermal conversion and the like. The photothermal conversion technology is used as a direct way for absorbing solar energy, and has application potential in heating and energy storage directions. The existing photothermal conversion technology is also used in the field of solar-driven water purification, and conversion from various water bodies such as seawater, brackish water, sewage and the like to clean fresh water is realized. However, the heat energy generated in the photothermal conversion process is dissipated to the environment after the water body is driven to evaporate and purify, and is not reused. If the part of heat energy can be used for increasing the temperature and the capacity of the super capacitor, the method is a feasible way for solving the problems.
The utility model has the following contents:
in order to solve the problem that prior art exists, the utility model provides an integrated device of solar photothermal enhancement ultracapacitor system electric capacity, the utility model discloses be used for promoting ultracapacitor system's capacity with solar photothermal conversion's heat, keep efficient solar photothermal drive water evaporation simultaneously and purify, realized the integration of energy collection, conversion and storage, extended current ultracapacitor system and solar photothermal conversion technology's range of application.
The utility model aims at providing an integrated device of a solar photo-thermal enhanced super capacitor, which comprises a super capacitor with a photo-thermal conversion function, a heat preservation layer, a water delivery channel and a water container; the supercapacitor comprises a first electrode, a second electrode and a gel electrolyte, the first electrode and the second electrode are horizontally arranged side by side, one side of the first electrode is used as a light-heat conversion layer, the other side of the first electrode is used as an electrochemical energy storage layer, one side of the second electrode is used as a light-heat conversion layer, the other side of the second electrode is used as an electrochemical energy storage layer, the first electrode and the second electrode are connected through the gel electrolyte, the bottoms of the first electrode and the second electrode are arranged on a heat preservation layer, a groove for placing the gel electrolyte is formed in the middle of the heat preservation layer, a through hole is formed in the center of the bottom of the groove, the aperture of the through hole is smaller than the diameter of the groove, a water delivery channel comprises a wetting layer, a vertical water delivery channel and a water absorption layer, the wetting layer is arranged at the bottom of the groove, the vertical water delivery channel is arranged in the through hole, the water absorption layer is immersed in the water container, and the heat preservation layer is arranged at the top of the water container.
The utility model discloses an electrode material that the utilization has the light and heat conversion effect combines with gel electrolyte, has assembled out the gel type ultracapacitor system that can be used for light and heat drive evaporation. In addition, by utilizing the design of the heat-insulating layer and the water delivery channel, the stability of the operation of the device can be ensured on the one hand, and on the other hand, the replacement of different water bodies to be treated can be realized. The first electrode and the second electrode are horizontally arranged side by side, so that the light absorption area is increased, the illumination evaporation is promoted, the electrolyte ions are driven to rapidly move by utilizing the illumination evaporation effect, and the energy storage effect of the super capacitor is enhanced. If the water delivery channel is not added, the water is evaporated by illumination, and the electrolyte in the gel type super capacitor is easy to dehydrate and loses the energy storage function.
The utility model discloses an electrode material with light and heat conversion performance, the gel type ultracapacitor system who constitutes through the connection of gel electrolyte is placed on the upper portion of the recess center through hole of heat preservation, the bottom of gel type ultracapacitor system and the wetting layer direct contact of water delivery passageway, vertical type water delivery passageway passes the through hole of heat preservation, the direct submergence in flourishing water container in the root of water delivery passageway water absorption layer, the heat preservation of placing gel capacitor is placed at whole flourishing water container top. The surface of the photothermal conversion layer of the electrode material is heated under the action of illumination, heat can be localized on the electrode material under the action of the heat preservation layer, and the water in the gel electrolyte contacted with the electrode material is subjected to phase change due to the temperature rise, so that evaporation is realized. Meanwhile, the electrolyte is in contact with the other surface of the electrode material, so that a super capacitor structure can be formed, and the electrochemical energy can be stored while water is evaporated. Because the continuous evaporation of water leads to the water content reduction in the gel electrolyte, and the water delivery passageway can supply the water in the water container to the gel electrolyte bottom fast to guarantee the stability of gel electrolyte energy storage process and evaporation process operation, realize the processing of multiple water through the selection to different water simultaneously.
Preferably, the first electrode material is selected from one of carbon cloth electrode, carbon paper electrode, conductive polymer/filter paper composite, conductive polymer/non-woven fabric composite, conductive polymer/metal oxide/filter paper composite, conductive polymer/metal oxide/non-woven fabric composite, graphene aerogel, carbon nanotube aerogel, graphene aerogel/metal oxide and carbon nanotube aerogel/metal oxide.
Preferably, the second electrode material is selected from one of a carbon cloth electrode, a carbon paper electrode, a conductive polymer/filter paper composite, a conductive polymer/non-woven fabric composite, a conductive polymer/metal oxide/filter paper composite, a conductive polymer/metal oxide/non-woven fabric composite, a graphene aerogel, a carbon nanotube aerogel, a graphene aerogel/metal oxide and a carbon nanotube aerogel/metal oxide. The first electrode material and the second electrode material have a porous structure, high light absorption rate, electrochemical activity and hydrophilicity, and both surfaces of the electrode material have light absorption capacity and electrochemical activity. The first electrode and the second electrode may be made of the same kind of the above-mentioned materials, or may be made of two different kinds of the above-mentioned materials.
Preferably, the gel electrolyte is polyvinyl alcohol-based hydrogel or polyvinyl alcohol-based aerogel, and H in the polyvinyl alcohol-based hydrogel or polyvinyl alcohol-based aerogel 2 SO 4 The mass fraction of (A) is 1-20%.
Preferably, the heat-insulating layer is expanded polystyrene foam or polyurethane foam.
Preferably, the wetting layer, the water transport channel and the water absorbing layer are integrally formed.
More preferably, the water absorbing layer is a tree root type water absorbing layer. The water absorbing layer is arranged in a tree root shape, which is more beneficial to absorbing the water in the water container.
Preferably, one end of the first electrode is connected with the first conductive current collector through conductive silver paste, and one end of the second electrode is connected with the second conductive current collector through conductive silver paste.
Preferably, the first conductive current collector and the second conductive current collector are both conductive metal sheets.
Preferably, the super capacitor is charged by an external power supply through a wire.
Compared with the prior art, the utility model has the advantages that:
1. the utility model provides an integrated device of solar photothermal enhancement ultracapacitor system electric capacity is used for promoting ultracapacitor system's capacity with the heat of solar photothermal conversion, keeps efficient solar photothermal drive water evaporation to purify simultaneously, has realized the integration that the energy was collected, was converted and was stored, has extended the range of application of current ultracapacitor system and solar photothermal conversion technique.
2. The utility model discloses a light and heat effect and water supply design have solved and have utilized the fuel factor to promote this in-process of ultracapacitor system capacitance performance, and gel electrolyte is because of the too much problem of performance degradation of the desiccation.
3. Compared with the prior art, the utility model discloses a water purification and electric energy ally oneself with the confession, have promoted the added value and the suitability of this technical product.
Description of the drawings:
fig. 1 is a schematic structural diagram of an integrated device of a solar photo-thermal enhanced supercapacitor capacitor according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a gel-type supercapacitor according to embodiment 1 of the present invention;
FIG. 3 shows the integrated device of the solar photo-thermal enhanced supercapacitor capacitor of embodiment 1 of the present invention in the presence or absence of illumination for 10mV s -1 Cyclic voltammograms at sweep rate;
FIG. 4 shows the integrated device of the solar photo-thermal enhanced supercapacitor capacitor of embodiment 1 of the present invention with or without illumination at 3mA cm -2 Constant current charge and discharge performance diagram under current density;
fig. 5 is a graph showing the evaporation and purification performance of the integrated device of the solar photo-thermal enhanced supercapacitor capacitor in the embodiment 1 of the present invention in the presence or absence of illumination;
description of reference numerals: 1. the device comprises a first electrode, a second electrode, a gel electrolyte, a heat preservation layer, a water delivery passage, a water container, a first conductive current collector, a second conductive current collector, a power supply, a wire and a water delivery passage, wherein the first electrode 2, the second electrode 3, the gel electrolyte 4, the heat preservation layer 5, the water delivery passage 6, the water container 7, the first conductive current collector 8, the second conductive current collector 9, the power supply 10 and the wire.
The specific implementation mode is as follows:
the technical solution of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Except for special description, the equipment and the reagent used by the utility model are conventional commercial products in the technical field.
Example 1
As shown in fig. 1 and 2, an integrated device for enhancing capacitance of a supercapacitor by solar photo-thermal comprises a supercapacitor with a photo-thermal conversion function, an insulating layer 4, a water delivery channel 5 and a water container 6; the super capacitor is composed of a first electrode 1, a second electrode 2 and a gel electrolyte 3, wherein the first electrode 1 and the second electrode 2 are horizontally arranged side by side. One side of the first electrode 1 is used as a light-heat conversion layer, the other side is used as an electrochemical energy storage layer, one side of the second electrode 2 is used as a light-heat conversion layer, the other side is used as an electrochemical energy storage layer, the first electrode 1 and the second electrode 2 are connected through the gel electrolyte 3, the bottoms of the first electrode 1 and the second electrode 2 are arranged on the heat preservation layer 4, the middle part of the heat preservation layer 4 is provided with a groove for placing the gel electrolyte 3, the center of the bottom of the groove is provided with a through hole, the aperture of the through hole is smaller than the diameter of the groove, the water delivery channel 5 comprises a wetting layer equal to the diameter of the bottom of the groove, the vertical water delivery channel and a water absorption layer, the wetting layer is arranged at the bottom of the groove, the vertical water delivery channel is arranged in the through hole, the water absorption layer is immersed in the water container 6, and the heat preservation layer 4 is arranged at the top of the water container 6.
One end of the first electrode 1 is electrically connected with the first conductive current collector 7 through conductive silver adhesive, and one end of the second electrode 2 is connected with the second conductive current collector 8 through conductive silver adhesive. In the present embodiment, it is preferable that both the first conductive current collector 7 and the second conductive current collector 8 are conductive metal sheets. The super capacitor is charged by an external power supply 9 through a lead 10 led out by a first conductive current collector 7 and a second conductive current collector 8.
Photothermal conversion layer material and electrochemistry energy storage layer material in first electrode 1 can be the same, can be inequality the utility model discloses photothermal conversion layer material and electrochemistry energy storage layer material in well preferred first electrode 1 are the same, and first electrode 1 material is selected from one of carbon cloth electrode, carbon paper electrode, electrically conductive polymer/filter paper composite, electrically conductive polymer/non-woven fabrics composite, electrically conductive polymer/metallic oxide/filter paper composite, electrically conductive polymer/metallic oxide/non-woven fabrics composite, graphite alkene aerogel, carbon nanotube aerogel, graphite alkene aerogel/metallic oxide and carbon nanotube aerogel/metallic oxide.
Photothermal conversion layer material and electrochemistry energy storage layer material in the second electrode 2 can be the same, can be inequality the utility model discloses photothermal conversion layer material and electrochemistry energy storage layer material in well preferred second electrode 2 are the same, and second electrode 2 material is selected from one of carbon cloth electrode, carbon paper electrode, electrically conductive polymer/filter paper composite, electrically conductive polymer/non-woven fabrics composite, electrically conductive polymer/metallic oxide/filter paper composite, electrically conductive polymer/metallic oxide/non-woven fabrics composite, graphite alkene aerogel, carbon nanotube aerogel, graphite alkene aerogel/metallic oxide and carbon nanotube aerogel/metallic oxide. The materials of the first electrode 1 and the second electrode 2 have porous structures, high light absorption rate, electrochemical activity and hydrophilicity at the same time, and both surfaces of the electrode materials have light absorption capacity and electrochemical activity. The materials of the first electrode 1 and the second electrode 2 may be the same kind of the above materials used, or two different kinds of the above materials may be used. In this embodiment, it is preferable that the material of the first electrode 1 is a conductive polymer/filter paper composite material, and the material of the second electrode 2 is a conductive polymer/filter paper composite material. The conductive polymer/filter paper composite material is characterized in that filter paper is used as a carrier to support conductive polymers, the conductive polymers are deposited on the filter paper, the conductive polymers are black and are favorable for light absorption, and the filter paper is used for increasing the pores and the specific surface area of the conductive polymer material and is favorable for light absorption evaporation and electrochemical energy storage. The conductive polymer is selected from one of polypyrrole, polyaniline, and polythiophene, and in this embodiment, the conductive polymer is preferably polypyrrole.
The gel electrolyte is polyvinyl alcohol-based hydrogel or polyvinyl alcohol-based aerogel, and H in the polyvinyl alcohol-based hydrogel or polyvinyl alcohol-based aerogel 2 SO 4 The mass fraction of (A) is 1% -20%. In this embodiment, the preferred gel electrolyte is a polyvinyl alcohol-based hydrogel, in which H is present 2 SO 4 Is 10 percent.
The heat insulating layer is expanded polystyrene foam or polyurethane foam. In this embodiment, the insulating layer is preferably expanded polystyrene foam.
The wetting layer, the water transmission channel and the water absorbing layer can be separately arranged according to actual conditions, the wetting layer, the water transmission channel and the water absorbing layer are integrally formed in the embodiment, and the water transmission channel 5 is dust-free paper. The water absorbing layer is a tree root type water absorbing layer which is arranged to be tree root type, which is more beneficial to absorbing the water in the water container.
The upper part of the water delivery channel 5 is a wetting layer with the area equal to the bottom area of the gel electrolyte, the middle part is a vertical water delivery channel, the bottom part is a tree root type water absorption layer, and the root part of the water delivery channel 5 is directly immersed in the water container 6. The temperature of the photothermal conversion surfaces of the first electrode 1 and the second electrode 2 rises under the action of illumination, heat can be limited on the materials of the first electrode 1 and the second electrode 2 under the action of the heat preservation layer 4, and the water in the gel electrolyte 3 in contact with the first electrode 1 and the second electrode 2 is subjected to phase change due to the temperature rise, so that evaporation is realized. Meanwhile, since the gel electrolyte 3 is in contact with the other surfaces of the first electrode 1 and the second electrode 2, a super capacitor structure can be formed, and electrochemical energy storage can be realized while evaporation is carried out. The water content in the gel electrolyte 3 is reduced due to the continuous evaporation of the water, and the water conveying channel 5 can rapidly replenish the water in the water container 6 to the bottom of the gel electrolyte 3, so that the running stability of the energy storage process of the gel electrolyte 3 and the evaporation process on the surfaces of the first electrode 1 and the second electrode 2 is ensured.
FIG. 3 shows the device of this example operating at 10mV s -1 Cyclic voltammograms with and without light at the sweep rate. FIG. 4 shows the device of this example at 3mA cm -2 Charging and discharging under current density, with and without illuminationPerformance is compared to the graph. Fig. 5 is a graph comparing the water evaporation purification performance of the device of the present embodiment in both lighted and non-lighted conditions. The illumination conditions are that the xenon lamp light source simulates the illumination intensity of one sun (1 kW m) -2 ). As can be seen, the area specific capacitance of the device is 33.98mF cm in the absence of illumination -2 The water evaporation purification rate was 0.19kg m -2 h -1 . At a strength of 1kW m -2 Under the illumination of the light, the area specific capacitance of the device is increased to 120.32mF cm -2 An increase of about 3.5 times; the water evaporation purification rate is increased to 1.96kg m -2 h -1 The improvement is about 10.3 times.
The above description of the embodiments is only for the purpose of helping understanding the technical solution of the present invention and the core idea thereof, and it should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall into the protection scope of the claims of the present invention.
Claims (9)
1. An integrated device for enhancing the capacitance of a super capacitor by solar photo-thermal is characterized by comprising the super capacitor with a photo-thermal conversion function, a heat insulation layer, a water delivery channel and a water container; the supercapacitor comprises a first electrode, a second electrode and a gel electrolyte, the first electrode and the second electrode are horizontally placed side by side, one side of the first electrode is used as a light-heat conversion layer, the other side of the first electrode is used as an electrochemical energy storage layer, one side of the second electrode is used as a light-heat conversion layer, the other side of the second electrode is used as an electrochemical energy storage layer, the first electrode and the second electrode are connected through the gel electrolyte, the bottoms of the first electrode and the second electrode are placed on a heat insulation layer, a groove for placing the gel electrolyte is formed in the middle of the heat insulation layer, a through hole is formed in the center of the bottom of the groove, the aperture of the through hole is smaller than the diameter of the groove, a water delivery channel comprises a wetting layer equal to the diameter of the bottom of the groove, a vertical water delivery channel and a water absorption layer, the bottom of the groove is formed in the vertical water delivery channel, the through hole is formed in the through hole, the water absorption layer is immersed in the water container, and the heat insulation layer is arranged at the top of the water container.
2. The integrated device of the solar photothermal enhancement supercapacitor capacitor according to claim 1, wherein the first electrode material is selected from one of a carbon cloth electrode, a carbon paper electrode, a conductive polymer/filter paper composite, a conductive polymer/non-woven fabric composite, a conductive polymer/metal oxide/filter paper composite, a conductive polymer/metal oxide/non-woven fabric composite, a graphene aerogel, a carbon nanotube aerogel, a graphene aerogel/metal oxide and a carbon nanotube aerogel/metal oxide.
3. The integrated device of the solar photothermal enhancement supercapacitor capacitor according to claim 1, wherein the second electrode material is selected from one of carbon cloth electrode, carbon paper electrode, conductive polymer/filter paper composite, conductive polymer/non-woven fabric composite, conductive polymer/metal oxide/filter paper composite, conductive polymer/metal oxide/non-woven fabric composite, graphene aerogel, carbon nanotube aerogel, graphene aerogel/metal oxide and carbon nanotube aerogel/metal oxide.
4. The integrated device for solar photothermal enhancement of supercapacitor capacitance according to claim 1, wherein the thermal insulation layer is expanded polystyrene foam or polyurethane foam.
5. The integrated device of solar photothermal enhancement supercapacitor capacitor according to claim 1, wherein the wetting layer, the water transport channel and the water absorbing layer are integrally formed.
6. The integrated device of solar photothermal enhancement supercapacitor capacitor according to claim 1 or 5, wherein the water absorbing layer is a tree root type water absorbing layer.
7. The integrated device of the solar photo-thermal enhanced supercapacitor capacitor according to claim 1, wherein one end of the first electrode is connected with the first conductive current collector through conductive silver paste, and one end of the second electrode is connected with the second conductive current collector through conductive silver paste.
8. The integrated device of solar photothermal enhancement supercapacitor capacitor according to claim 7, wherein the first conductive current collector and the second conductive current collector are both conductive metal sheets.
9. The integrated device for solar photothermal enhancement of supercapacitor capacitance according to claim 1, wherein the supercapacitor is charged by an external power supply through a wire.
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| CN202220478713.9U CN217690819U (en) | 2022-03-07 | 2022-03-07 | Integrated device for enhancing capacitance of supercapacitor by solar energy light and heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784390A (en) * | 2022-11-10 | 2023-03-14 | 重庆大学 | Photo-thermal evaporation coupling capacitance deionization seawater desalination device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784390A (en) * | 2022-11-10 | 2023-03-14 | 重庆大学 | Photo-thermal evaporation coupling capacitance deionization seawater desalination device and method |
| CN115784390B (en) * | 2022-11-10 | 2024-05-07 | 重庆大学 | Photo-thermal evaporation coupling capacitor deionized sea water desalting device and method |
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Assignee: Guangxi Ouliwen Information Technology Co.,Ltd. Assignor: GUILIN University OF ELECTRONIC TECHNOLOGY Contract record no.: X2022450000388 Denomination of utility model: An Integrated Device of Solar Photothermal Enhanced Supercapacitor Capacitance Granted publication date: 20221028 License type: Common License Record date: 20221226 |