CN113037126B - Composite water drop solid-liquid friction nano generator and use method thereof - Google Patents
Composite water drop solid-liquid friction nano generator and use method thereof Download PDFInfo
- Publication number
- CN113037126B CN113037126B CN202110255950.9A CN202110255950A CN113037126B CN 113037126 B CN113037126 B CN 113037126B CN 202110255950 A CN202110255950 A CN 202110255950A CN 113037126 B CN113037126 B CN 113037126B
- Authority
- CN
- China
- Prior art keywords
- hydrophobic
- water
- solid
- friction layer
- arc
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
Abstract
The invention provides a composite water drop solid-liquid friction nano generator and a using method thereof, and relates to the technical field of friction nano generators. The invention provides a composite water drop solid-liquid friction nano generator which comprises a container, an arc-shaped plate, a hydrophobic solid friction layer and a copper electrode, wherein the hydrophobic solid friction layer and the copper electrode are arranged on the inner concave surface of the arc-shaped plate; the container is provided with a water outlet, and water or aqueous solution is contained in the container; the hydrophobic solid friction layer is arranged on the upper part of the arc-shaped plate, and the copper electrode is arranged on the lower part of the arc-shaped plate; the hydrophobic solid friction layer is arranged right below the water outlet of the container. The composite water drop solid-liquid friction nano generator provided by the invention can lead out and utilize the electrostatic energy in water drops which slide down after being contacted and electrified with the solid friction layer, and can further improve the energy conversion efficiency of the water drop friction nano generator.
Description
Technical Field
The invention relates to the technical field of friction nano generators, in particular to a composite water drop solid-liquid friction nano generator and a using method thereof.
Background
In 2012, professor wangzhong forest of the university of georgia and coworkers invented a triboelectric nanogenerator (TENG), which is a novel energy harvesting technology that converts mechanical energy into electrical energy by using triboelectricity. In order to more flexibly and universally utilize various energy sources, researchers have developed a variety of TENGs with different structural designs, such as wind driven TENG, acoustic wave driven TENG, and liquid droplet driven TENG, among others. The solid-liquid friction nano generator converts vibration energy in liquid drops into electric energy by utilizing frictional electrification between solid materials and the liquid drops. Compared with the triboelectrification of two different solid materials, the existence of the liquid drops can eliminate the abrasion between the solid materials, which is beneficial to avoiding the degradation and performance reduction of the materials and improving the stability and durability, thereby having very wide application prospect.
In 2014, Wangzhining teaches that a solid-liquid nanometer friction generator is utilized to collect vibration energy in water drops, systematically expounds the working principle of water drop TENG, and proposes the theory that the water drops carry two kinds of energy, namely mechanical energy generated by impact when the water drops on a substrate and electrostatic energy generated in the process of contacting with air or a pipeline and charging. However, the theory is limited to the application of an electrode behind the solid friction layer, and only the charge energy carried by the solid friction layer can be utilized. In 2019, by sticking an electrode on the surface of a solid friction layer, water drops drop on the solid friction layer and an electrode material at the same time, so that the charge output is greatly improved, but the electrostatic energy contained in the water drops which slide down after contacting and being charged with the solid friction layer is still not utilized.
Disclosure of Invention
The invention aims to provide a composite water drop solid-liquid friction nano generator and a using method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a composite water drop solid-liquid friction nano generator which comprises a container, an arc-shaped plate, a hydrophobic solid friction layer and a copper electrode, wherein the hydrophobic solid friction layer and the copper electrode are arranged on the inner concave surface of the arc-shaped plate; the container is provided with a water outlet, and water or aqueous solution is contained in the container; the hydrophobic solid friction layer is arranged on the upper part of the arc-shaped plate, and the copper electrode is arranged on the lower part of the arc-shaped plate; the hydrophobic solid friction layer is arranged right below the water outlet of the container.
Preferably, the hydrophobic solid friction layer and the copper electrode have a gap therebetween.
Preferably, the included angle between the lowest point of the arc-shaped plate and the horizontal plane is 10-70 degrees.
Preferably, the wire connector further comprises a first wire and a second wire; one end of the first lead is connected with the water or the aqueous solution in the container, and the other end of the first lead is grounded; one end of the second lead is connected with the copper electrode, and the other end of the second lead is connected with a current collecting device.
Preferably, the vertical distance between the water outlet of the container and the hydrophobic solid friction layer is 5-50 cm.
Preferably, the water comprises deionized or purified water; the aqueous solution includes rainwater, seawater, an acid solution, or a salt solution.
Preferably, the hydrophobic solid friction layer comprises a hydrophobic polytetrafluoroethylene film, a hydrophobic polyvinylidene fluoride film, a hydrophobic polyester resin film, a hydrophobic polyimide film, a hydrophobic polystyrene film, a hydrophobic polycarbonate film or a hydrophobic polypropylene film.
Preferably, the device further comprises a back electrode arranged between the hydrophobic solid friction layer and the arc-shaped plate.
The invention provides a use method of the composite water drop solid-liquid friction nano generator in the technical scheme, which comprises the following steps:
and dropping water or aqueous solution in the container from a water outlet onto the surface of the hydrophobic solid friction layer, sliding the water drops to a copper electrode along the surface of the hydrophobic solid friction layer, and collecting charge energy in the water drops by using the copper electrode.
Preferably, the dropping speed of the water or the aqueous solution is more than or equal to 1 drop/second; the size of the water drop is 10-100 mu L.
The invention provides a composite water drop solid-liquid friction nano generator which comprises a container, an arc-shaped plate, a hydrophobic solid friction layer and a copper electrode, wherein the hydrophobic solid friction layer and the copper electrode are arranged on the inner concave surface of the arc-shaped plate; the container is provided with a water outlet, and water or aqueous solution is contained in the container; the hydrophobic solid friction layer is arranged on the upper part of the arc-shaped plate, and the copper electrode is arranged on the lower part of the arc-shaped plate; the hydrophobic solid friction layer is arranged right below the water outlet of the container. The invention realizes the outflow or stop of water drops by using the container with the water outlet; according to the invention, the hydrophobic solid friction layer is arranged right below the water outlet of the container, so that water drops in the container can be ensured to drop on the surface of the hydrophobic solid friction layer, and the water drops slide down along the surface of the hydrophobic solid friction layer, so that the water drops are electrified; compared with the common solid friction layer, the hydrophobic solid friction layer adopted by the invention can ensure that water drops completely flow onto the lower copper electrode, thereby improving the electrical output performance; when the charged water drops slide onto the copper electrode, the copper electrode is a good electric conductor, so that the charge energy in the water drops can be collected, and the energy conversion efficiency of the water drop friction nano generator is improved.
The invention also utilizes the arc-shaped structure, and compared with the water drop which is scratched on the inclined plane with the same length, the water drop scratches on the arc-shaped surface for a shorter time and rubs more quickly, and the water drop after rubbing has larger electric charge, so that the triboelectric output is larger. Meanwhile, the invention has simple structure, low cost of used materials, easy large-scale manufacture, and can fully utilize various liquid energies (such as raindrop energy, ocean wave energy, river energy and the like) in nature, and the collected energy can be used for supplying energy to some small devices and preventing corrosion to some metal materials.
Drawings
FIG. 1 is a schematic view of a composite water droplet solid-liquid friction nano-generator employed in example 1;
FIG. 2 is a graph of current data derived from a second copper wire in example 1;
FIG. 3 is a schematic view of the composite water droplet solid-liquid friction nano-generator employed in example 2;
FIG. 4 is a graph of current data derived from a second copper wire in example 2;
wherein, 1-1 is a first lead, 1-2 is a second lead, 1-3 is a third lead, 2 is a container, 3 is water or aqueous solution, 4 is a water drop, 5 is an arc-shaped plate, 6 is a hydrophobic solid friction layer, 7 is a copper electrode, and 8 is a back electrode.
Detailed Description
The invention provides a composite water drop solid-liquid friction nano generator which comprises a container, an arc-shaped plate, a hydrophobic solid friction layer and a copper electrode, wherein the hydrophobic solid friction layer and the copper electrode are arranged on the inner concave surface of the arc-shaped plate; the container is provided with a water outlet, and water or aqueous solution is contained in the container; the hydrophobic solid friction layer is arranged on the upper part of the arc-shaped plate, and the copper electrode is arranged on the lower part of the arc-shaped plate; the hydrophobic solid friction layer is arranged right below the water outlet of the container.
The composite water drop solid-liquid friction nano generator provided by the invention comprises a container, wherein the container is provided with a water outlet, and water or aqueous solution is contained in the container. The invention utilizes the container to realize the outflow or stop of water drops. As an embodiment of the invention, a valve is arranged at the water outlet of the container. In a particular embodiment of the invention, the container is a funnel.
In the present invention, the water preferably includes deionized water or purified water; the aqueous solution preferably comprises rainwater, seawater, an acid solution or a salt solution.
As an embodiment of the present invention, the composite water droplet solid-liquid friction nano-generator further includes a first wire, one end of the first wire is connected to the water or aqueous solution in the container, and the other end of the first wire is grounded. In the invention, the first lead is used for grounding the water or the aqueous solution in the container so as to eliminate the charge carried by the first lead. In the invention, the first conducting wire is preferably a copper conducting wire, and the diameter of the first conducting wire is preferably 0.1-0.5 mm, and more preferably 0.2 mm.
The composite water drop solid-liquid friction nano generator provided by the invention comprises an arc-shaped plate arranged below a container and used for fixedly supporting a hydrophobic solid friction layer and a copper electrode. In the invention, the included angle between the lowest point of the arc-shaped plate and the horizontal plane is preferably 10-70 degrees, and more preferably 30-60 degrees. In the present invention, the arc of the arc plate is preferably 10 ° to 90 °, and more preferably 90 °. The invention adopts the arc-shaped plate with the inclination angle, and can ensure that water drops have larger electric output when being contacted and separated with the hydrophobic solid friction layer arranged on the surface of the arc-shaped plate.
In the present invention, the curved plate is preferably an electrically neutral insulator plastic material, more preferably plexiglass.
In the invention, a hydrophobic solid friction layer and a copper electrode are arranged on the inner concave surface of the arc-shaped plate; the hydrophobic solid friction layer is arranged on the upper part of the arc-shaped plate, and the copper electrode is arranged on the lower part of the arc-shaped plate; the hydrophobic solid friction layer is arranged right below the water outlet of the container.
In the present invention, the hydrophobic solid frictional layer preferably includes a hydrophobic polytetrafluoroethylene film, a hydrophobic polyvinylidene fluoride film, a hydrophobic polyester resin film, a hydrophobic polyimide film, a hydrophobic polystyrene film, a hydrophobic polycarbonate film, or a hydrophobic polypropylene film, more preferably a hydrophobic polytetrafluoroethylene film.
In the present invention, the hydrophobic solid friction layer is preferably obtained by hydrophobically modifying a solid friction layer. In the present invention, the hydrophobic modification is preferably a fluorinated modification.
In the present invention, the method of hydrophobic modification preferably comprises the steps of: treating the solid friction layer by using air plasma to obtain a pretreated solid friction layer; dripping perfluorooctyl trichlorosilane to the surface of the pretreated solid friction layer, and fluorinating under a vacuum condition; the process is a primary fluorination treatment, and the fluorination treatment is carried out for 1-3 times to obtain a fluorinated sample; the fluorinated sample was dried to complete the hydrophobic modification. In the present invention, the solid friction layer preferably includes a polytetrafluoroethylene film, a polyvinylidene fluoride film, a polyester resin film, a polyimide film, a borrelidin film, a polycarbonate film, or a polypropylene film, more preferably a polytetrafluoroethylene film. The present invention has no special requirements for the specific process parameters of the air plasma treatment, and the air plasma treatment process known to those skilled in the art can be adopted. In the invention, the total dropping amount of the perfluorooctyl trichlorosilane is preferably 30-50 mu L, and more preferably 40-50 mu L. In the invention, the time for the first fluorination is preferably 20-30 min, and more preferably 25 min. In the invention, the drying temperature is preferably 100-120 ℃, and more preferably 110 ℃; the drying time is preferably 1.5-3 h, and more preferably 2 h.
According to the invention, through hydrophobic modification, the hydrophobicity of the solid friction layer can be improved, so that water drops dropping on the solid friction layer can completely flow down, and the electric output performance is improved.
In the present invention, the thickness of the hydrophobic solid rubbing layer is preferably 0.10 to 0.20mm, and more preferably 0.14 to 0.16 mm. In a specific embodiment of the present invention, when the hydrophobic solid friction layer is a hydrophobic polytetrafluoroethylene membrane, the pore size of the hydrophobic solid friction layer is preferably 0.45 μm. In an embodiment of the present invention, the hydrophobic solid friction layer is disposed at a central region of an upper portion of the arc plate. In a specific embodiment of the present invention, the hydrophobic solid friction layer is preferably fixed on the arc-shaped plate by a double-sided adhesive tape.
In the invention, the vertical distance between the water outlet of the container and the hydrophobic solid friction layer is preferably 0-50 cm, and more preferably 20-30 cm. The invention can control the distance to make the water drop fall faster and rub with the film more sufficiently, thereby increasing the power generation energy.
In the present invention, the copper electrode is preferably a copper tape or a copper sheet. In the invention, the thickness of the copper electrode is preferably 0.05-0.1 mm, and more preferably 0.05 mm. In an embodiment of the present invention, the copper electrode is disposed in a central region of a lower portion of the arc plate. In a particular embodiment of the invention, the copper electrode is preferably sealed around with a glue, preferably an AB glue.
In the present invention, the hydrophobic solid friction layer and the copper electrode preferably have a gap therebetween. In the present invention, when the surface of the arc-shaped plate is completely spread out to be a plane, the horizontal distance between the hydrophobic solid friction layer and the copper electrode is preferably 0.2 to 0.5mm, and more preferably 0.3 to 0.4mm, the horizontal distance being based on the edge where the hydrophobic solid friction layer and the copper electrode are adjacent. The invention leaves a gap between the hydrophobic solid friction layer and the copper electrode, so that water can be separated from the hydrophobic solid friction layer.
As an embodiment of the present invention, the composite water droplet solid-liquid friction nano-generator further includes a second wire; one end of the second lead is connected with the copper electrode, and the other end of the second lead is connected with a current collecting device. In the invention, the second lead is used for leading out the charge energy collected by the copper electrode. In the invention, the second conducting wire is preferably a copper conducting wire, and the diameter of the second conducting wire is preferably 0.1-0.5 mm, and more preferably 0.2 mm. In the present invention, the second conductive wire and the copper electrode are preferably connected by silver paste solution. In the invention, the silver paste solution is a settable solution with conductive capability, and the connection method of the silver paste solution is preferably to smear the silver paste solution on the connection part.
As an embodiment of the present invention, the composite water droplet solid-liquid friction nano-generator further includes a back electrode disposed between the hydrophobic solid friction layer and the arc plate. In the invention, when water drops slide down along the surface of the hydrophobic solid friction layer, the water drops rub the hydrophobic solid friction layer, so that the surface of the hydrophobic solid friction layer is charged in a contact manner, and the charge energy carried by the hydrophobic solid friction layer can be collected by utilizing the back electrode.
As an embodiment of the invention, the composite water drop solid-liquid friction nano-generator further comprises a third conducting wire, wherein one end of the third conducting wire is connected with the back electrode, and the other end of the third conducting wire is connected with a current collecting device. In the invention, the third conducting wire is used for leading out the charge energy carried by the hydrophobic solid friction layer. In the invention, the third conducting wire is preferably a copper conducting wire, and the diameter of the third conducting wire is preferably 0.1-0.5 mm, and more preferably 0.2 mm.
In the invention, the back electrodes are preferably arranged on the back surface of the hydrophobic solid friction layer in an array mode, and the interval between two adjacent back electrodes is preferably 3-5 mm. In the present invention, the number of the back electrodes is preferably 1 to 5, and more preferably 3. In the invention, the back electrode is preferably a copper tape, and the thickness of the back electrode is preferably 0.05-0.1 mm, and more preferably 0.05 mm. In the specific embodiment of the invention, the copper adhesive tape is used as the back electrode, and the hydrophobic solid friction layer and the arc-shaped plate can be connected by utilizing the adhesive property of the copper adhesive tape without using other adhesives for adhesion.
The invention also provides a use method of the composite water drop solid-liquid friction nano generator in the technical scheme, which comprises the following steps:
and (3) dropping water or aqueous solution in the container onto the surface of the hydrophobic solid friction layer from the water outlet, sliding the water drops to the copper electrode along the surface of the hydrophobic solid friction layer, and collecting charge energy in the water drops by using the copper electrode.
In the invention, the dropping speed of the water or the aqueous solution is preferably more than or equal to 1 drop/second, and more preferably 3-5 drops/second; the size of the water drop is preferably 10-100 mu L, and more preferably 50-80 mu L.
In the embodiment of the invention, water drops dropping from the water outlet of the container drop on the hydrophobic solid friction layer, impact with the hydrophobic solid friction layer and continuously rub the hydrophobic solid friction layer when sliding down along the surface of the hydrophobic solid friction layer, when the water drops completely slide off the hydrophobic solid friction layer and slide on the arc-shaped plate, the arc-shaped plate is electrically neutral and is an insulator, so that the charge energy loss in the water drops is less; when the water drops continuously slide to the copper electrode, the copper electrode is a good electric conductor, the electric charge energy in the water drops is collected and led out through the conducting wire, and therefore the electrostatic energy contained in the water drops is utilized.
In a specific embodiment of the present invention, when the composite water droplet solid-liquid friction nanogenerator includes a back electrode, water droplets dripping from a water outlet of a container drop on a hydrophobic solid friction layer, and the water droplets collide with the hydrophobic solid friction layer and continuously rub the hydrophobic solid friction layer while sliding down along the surface of the hydrophobic solid friction layer, so that the surface of the hydrophobic solid friction layer is charged by contact, and under the induction of the charges, the back electrode on the back of the hydrophobic solid friction layer induces different charges with the same size and opposite to the surface of the hydrophobic solid friction layer in electrical property, and the different charges are led out through a lead, so that the charges contained in the hydrophobic solid friction layer can be utilized; when the water drops which are completely rubbed with the hydrophobic solid friction layer slide onto the arc-shaped plate from the hydrophobic solid friction layer, the charge energy loss in the water drops is less because the arc-shaped plate is electrically neutral and is an insulator; when the water drops continuously slide to the copper electrode, the copper electrode is a good electric conductor, the electric charge energy in the water drops is collected and led out through the conducting wire, and therefore the electrostatic energy contained in the water drops is utilized.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The schematic diagram of the composite water drop solid-liquid friction nano-generator adopted in the embodiment is shown in fig. 1, and a funnel and an arc-shaped plate are arranged from top to bottom; deionized water is filled in the funnel, a water outlet is formed in the bottom of the funnel, and a valve is arranged at the water outlet and used for controlling the size and dropping speed of water drops; one end of the first copper wire is placed in the deionized water of the funnel, and the other end of the first copper wire is grounded;
cutting organic glass with the size of 7cm multiplied by 7cm and the radian of 90 degrees as an arc-shaped plate, cleaning the surface, adhering a hydrophobic polytetrafluoroethylene film with the diameter of 50mm on the upper surface of the arc-shaped plate by using a double-sided adhesive tape, adhering a copper adhesive tape with the size of 1cm multiplied by 0.8cm on the upper surface of the arc-shaped plate, wherein the copper adhesive tape is arranged at the lower part of the hydrophobic polytetrafluoroethylene film, and the gap between the hydrophobic polytetrafluoroethylene film and the copper adhesive tape is 0.3 mm; connecting one end of a second copper wire with the copper adhesive tape by using a silver paste solution, and connecting the other end of the second copper wire with a current collecting device; sealing the periphery of the copper adhesive tape by using AB adhesive; placing the arc-shaped plate below a funnel, and enabling the hydrophobic polytetrafluoroethylene membrane to be located right below a water outlet of the funnel, so as to ensure that water drops drop on the hydrophobic polytetrafluoroethylene membrane;
the preparation method of the hydrophobic polytetrafluoroethylene membrane comprises the following steps: treating the polytetrafluoroethylene membrane by using air plasma, washing the surface by using absolute ethyl alcohol, drying by using a blower, and cooling the sample to room temperature; then putting the mixture into a vacuum drier, dropwise adding 50 mu L of perfluorooctyl trichlorosilane, pumping for 10 minutes by using a vacuum pump to reach a vacuum state, closing a switch of the vacuum pump, keeping for 30 minutes in the vacuum state, and repeating the steps for three times; placing the fluorinated sample in an oven at 120 ℃ for 2 hours to obtain a hydrophobic polytetrafluoroethylene membrane;
the aperture of the polytetrafluoroethylene membrane is 0.45 mu m, and the manufacturer is Hainin energy large filtration equipment Co., Ltd; the pore diameter of the hydrophobic polytetrafluoroethylene membrane is 0.45 mu m.
The thickness of the copper adhesive tape is 0.05 mm; the diameter of the first copper wire and the second copper wire is 0.2 mm.
The valve of the water outlet of the funnel is opened, the dropping speed of the water drop is controlled to be 3-5 drops/second, the size of the water drop is 80 mu L, the water drop drops on the hydrophobic polytetrafluoroethylene film, collides with the hydrophobic polytetrafluoroethylene film and slides downwards along the surface of the hydrophobic polytetrafluoroethylene film, the water drop slides to the copper adhesive tape through the arc plate, the charge energy in the water drop is collected by the second copper wire, and the obtained current data is shown in figure 2.
As can be seen from FIG. 2, the water rubbed with the hydrophobic PTFE film still has electric charges, and the device can effectively collect and utilize the electrostatic energy in the water.
Example 2
A schematic diagram of the composite water drop solid-liquid friction nano-generator adopted in the embodiment is shown in fig. 3, and a funnel and an arc-shaped plate are arranged from top to bottom; deionized water is filled in the funnel, a water outlet is formed in the bottom of the funnel, and a valve is arranged at the water outlet and used for controlling the size and dropping speed of water drops; one end of the first copper wire is placed in the deionized water of the funnel, and the other end of the first copper wire is grounded;
cutting organic glass with the size of 7cm multiplied by 7cm and the radian of 90 degrees as an arc-shaped plate, cleaning the surface, firstly attaching 3 copper adhesive tapes which are arranged in an array on the upper surface of the arc-shaped plate as a back electrode, and enabling the interval between two adjacent copper adhesive tapes to be 0.5 mm; sticking a hydrophobic polytetrafluoroethylene film with the diameter of 50mm on the surface of the copper adhesive tape, so that the copper adhesive tape is positioned between the hydrophobic polytetrafluoroethylene film and the arc-shaped plate; connecting one end of a third copper wire with the copper adhesive tape by using a silver paste solution, and connecting the other end of the third copper wire with the first current collecting device;
a copper sheet with the thickness of 1cm multiplied by 0.8cm is also attached to the upper surface of the arc-shaped plate, the copper sheet is arranged at the lower part of the hydrophobic polytetrafluoroethylene membrane, and the gap between the hydrophobic polytetrafluoroethylene membrane and the copper sheet is 6 mm; one end of a second copper wire is connected with the copper sheet by utilizing a silver paste solution, and the other end of the second copper wire is connected with a second current collecting device; sealing the periphery of the copper sheet by using AB glue; placing the arc-shaped plate below a funnel, and enabling the hydrophobic polytetrafluoroethylene membrane to be located right below a water outlet of the funnel, so as to ensure that water drops drop on the hydrophobic polytetrafluoroethylene membrane;
the preparation method of the hydrophobic polytetrafluoroethylene membrane comprises the following steps: treating the polytetrafluoroethylene membrane by using air plasma, washing the surface by using absolute ethyl alcohol, drying by using a blower, and cooling the sample to room temperature; then putting the mixture into a vacuum drier, dropwise adding 50 mu L of perfluorooctyl trichlorosilane, pumping for 10 minutes by using a vacuum pump to reach a vacuum state, closing a switch of the vacuum pump, keeping for 30 minutes in the vacuum state, and repeating the steps for three times; placing the fluorinated sample in an oven at 120 ℃ for 2 hours to obtain a hydrophobic polytetrafluoroethylene membrane;
the aperture of the polytetrafluoroethylene membrane is 0.45 mu m, and the manufacturer is Hainin energy large filtration equipment Co., Ltd; the pore diameter of the hydrophobic polytetrafluoroethylene membrane is 0.45 mu m.
The thicknesses of the copper tape and the copper sheet are both 0.05 mm; the diameters of the first copper wire, the second copper wire and the third copper wire are all 0.2 mm.
Opening a valve of a water outlet of the funnel, controlling the dropping speed of water drops to be 3-5 drops/second, controlling the size of the water drops to be 80 mu L, enabling the water drops to drop on the hydrophobic polytetrafluoroethylene membrane, colliding with the hydrophobic polytetrafluoroethylene membrane and sliding downwards along the surface of the hydrophobic polytetrafluoroethylene membrane, so that the surface of the hydrophobic polytetrafluoroethylene membrane is contacted and electrified, and under the induction of the electric charges, the copper adhesive tape on the back of the hydrophobic polytetrafluoroethylene membrane induces the dissimilar electric charges with the same size and opposite to the surface of the hydrophobic polytetrafluoroethylene membrane in electric property, and the dissimilar electric charges are led out through a third copper wire; the water drops slide down from the surface of the hydrophobic polytetrafluoroethylene film to the copper adhesive tape through the arc-shaped plate, the charge energy in the water drops is collected by using the second copper wire and the third copper wire, and the obtained current data is shown in fig. 4.
As can be seen from fig. 4, compared with the design of the apparatus in example 1, the apparatus in this embodiment can collect not only the electrostatic energy in the water droplets after rubbing with the hydrophobic teflon membrane, but also the electrostatic energy on the surface of the hydrophobic teflon membrane, so that the collected energy is increased.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A composite water drop solid-liquid friction nano generator comprises a container, an arc-shaped plate, a hydrophobic solid friction layer and a copper electrode, wherein the hydrophobic solid friction layer and the copper electrode are arranged on the inner concave surface of the arc-shaped plate; the container is provided with a water outlet, and water or aqueous solution is contained in the container; the hydrophobic solid friction layer is arranged on the upper part of the arc-shaped plate, and the copper electrode is arranged on the lower part of the arc-shaped plate; the hydrophobic solid friction layer is arranged right below a water outlet of the container;
a gap is arranged between the hydrophobic solid friction layer and the copper electrode; when the surface of the arc-shaped plate is completely unfolded to be a plane, the horizontal distance between the hydrophobic solid friction layer and the copper electrode is 0.2-0.5 mm, and the horizontal distance is based on the adjacent edges of the hydrophobic solid friction layer and the copper electrode.
2. The composite water droplet solid-liquid friction nanogenerator of claim 1, wherein the included angle between the lowest point of the arc-shaped plate and the horizontal plane is 10-70 degrees.
3. The composite water droplet solid-liquid friction nanogenerator of claim 1, further comprising a first wire and a second wire; one end of the first lead is connected with the water or the aqueous solution in the container, and the other end of the first lead is grounded; one end of the second lead is connected with the copper electrode, and the other end of the second lead is connected with a current collecting device.
4. The composite water droplet solid-liquid friction nanogenerator of claim 1, wherein the vertical distance between the water outlet of the container and the hydrophobic solid friction layer is 5-50 cm.
5. The composite water-droplet solid-liquid friction nanogenerator of claim 1, wherein the water comprises deionized or purified water; the aqueous solution includes rainwater, seawater, an acid solution, or a salt solution.
6. The hybrid water droplet solid-liquid friction nanogenerator of claim 1, wherein the hydrophobic solid friction layer comprises a hydrophobic polytetrafluoroethylene membrane, a hydrophobic polyvinylidene fluoride membrane, a hydrophobic polyester resin membrane, a hydrophobic polyimide membrane, a hydrophobic polystyrene membrane, a hydrophobic polycarbonate membrane, or a hydrophobic polypropylene membrane.
7. The composite water droplet solid-liquid friction nanogenerator of claim 1, further comprising a back electrode disposed between the hydrophobic solid friction layer and an arcuate plate.
8. The use method of the composite water drop solid-liquid friction nano generator as claimed in any one of claims 1 to 7, comprising the following steps:
and dropping water or aqueous solution in the container from a water outlet onto the surface of the hydrophobic solid friction layer, sliding the water drops to a copper electrode along the surface of the hydrophobic solid friction layer, and collecting charge energy in the water drops by using the copper electrode.
9. The use according to claim 8, wherein the dropping speed of the water or aqueous solution is 1 drop/second or more; the size of the water drop is 10-100 mu L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110255950.9A CN113037126B (en) | 2021-03-09 | 2021-03-09 | Composite water drop solid-liquid friction nano generator and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110255950.9A CN113037126B (en) | 2021-03-09 | 2021-03-09 | Composite water drop solid-liquid friction nano generator and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113037126A CN113037126A (en) | 2021-06-25 |
| CN113037126B true CN113037126B (en) | 2022-05-06 |
Family
ID=76467338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110255950.9A Active CN113037126B (en) | 2021-03-09 | 2021-03-09 | Composite water drop solid-liquid friction nano generator and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113037126B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719412B (en) * | 2021-08-30 | 2022-11-29 | 上海大学 | Energy collector capable of collecting multiple energy forms |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101557238B1 (en) * | 2014-09-04 | 2015-10-02 | 성균관대학교산학협력단 | Generating element using liquid drop |
| US10848079B2 (en) * | 2016-11-29 | 2020-11-24 | University Of Hawaii | Ambient energy harvesting device with charge-carrying movable electrode |
| CN110208614B (en) * | 2019-05-22 | 2020-10-27 | 西安交通大学 | Friction power generation test system and method based on solid-liquid mixed liquid drops |
| CN112072946A (en) * | 2020-08-28 | 2020-12-11 | 广东工业大学 | Liquid drop power generation device and using method thereof |
| CN112104255B (en) * | 2020-09-23 | 2021-09-24 | 河南大学 | Friction nanometer generator for capturing water drop energy and wind energy |
-
2021
- 2021-03-09 CN CN202110255950.9A patent/CN113037126B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113037126A (en) | 2021-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104734565B (en) | A kind of generator and electricity-generating method for collecting working fluid energy | |
| CN103780129B (en) | Rotary static generator | |
| CN103780125B (en) | A kind of jacket layer slidingtype friction nanometer power generator | |
| CN104124887B (en) | Wind-driven generator | |
| CN104980060A (en) | Triboelectric nanometer generator capable of collecting liquid mechanical energy and power generating method thereof | |
| CN109104137A (en) | A kind of common pole-type power generator being collected simultaneously rainwater energy and solar energy | |
| CN105099260A (en) | Composite power generator based on flowing liquid, power generation method and sensing method | |
| CN103780132B (en) | A kind of pulse friction generator and triboelectricity method | |
| CN103780133B (en) | A kind of impulse generator based on sliding friction and electricity-generating method | |
| CN110138258B (en) | Wind bell type friction nano generator and manufacturing method thereof | |
| CN113037126B (en) | Composite water drop solid-liquid friction nano generator and use method thereof | |
| KR102043167B1 (en) | Dust filter using triboelectricity | |
| CN108488046A (en) | A kind of windmill electric generating apparatus | |
| CN109361325B (en) | High-performance wave-type electret nano friction generator and preparation method thereof | |
| CN103780130B (en) | A kind of cantilever type impulse generator | |
| CN105490579A (en) | Multi-layer linked folding friction generator | |
| CN104113270B (en) | Use wind-power electricity generation and the solar electrical energy generation combined system of nano friction generator | |
| CN106026758B (en) | Generator and preparation method thereof and generating set | |
| CN110995050A (en) | Discharging friction generator | |
| CN108847779B (en) | Light-driven flexible friction nano generator and preparation method thereof | |
| CN109505736A (en) | A kind of preparation method for the compound energy system being collected simultaneously wind energy and water energy | |
| CN111555653A (en) | Preparation method and device of super-hydrophobic liquid-solid contact friction nano generator | |
| CN106712566B (en) | Three dimensions wheel generating electricity | |
| CN113489122B (en) | Direct-current liquid drop generator and preparation method thereof | |
| CN104779835B (en) | A kind of hybrid generator and electricity-generating method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |