CN113676076A - Liquid metal friction nano power generation insole and preparation method thereof - Google Patents
Liquid metal friction nano power generation insole and preparation method thereof Download PDFInfo
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- CN113676076A CN113676076A CN202110972378.8A CN202110972378A CN113676076A CN 113676076 A CN113676076 A CN 113676076A CN 202110972378 A CN202110972378 A CN 202110972378A CN 113676076 A CN113676076 A CN 113676076A
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- 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
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
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Abstract
A liquid metal friction nanometer power generation insole is characterized in that: be provided with friction nano power generation device in the shoe-pad, friction nano power generation device is multilayer composite construction, and liquid metal layer, nylon cloth, aluminium foil or copper foil and cardboard that liquid metal friction nano power generation structure that by supreme cardboard, aluminium foil or copper foil, the liquid metal nano power generation fibre of weaving more than two liquid metal nano power generation fibre side by side constitutes, liquid metal nano power generation fibre comprises liquid metal, epoxy AB glue, silicone tube and electrically conductive copper wire, and wherein liquid metal is full of inside the silicone tube, and epoxy AB glue seals at the both ends of silicone tube, and the mouth of pipe has the copper line to draw forth. The liquid metal friction nanometer power generation insole prepared by the invention has the advantages that the excellent open-circuit voltage reaches 64V, the short-circuit current reaches 1.23A, the stability of the generated voltage and current is excellent, and the price is low.
Description
Technical Field
The invention relates to the technical field of friction nano power generation, in particular to a liquid metal friction nano power generation insole and a preparation method thereof.
Background
Triboelectric nanogenerators (TENG) are micro/nano electromechanical power systems based on self-driven nanotechnology and based on contact/Triboelectric charging and electrostatic induction, which rely on friction or extrusion to generate electrical energy. It has the characteristics of low cost, various material selections, no need of pre-charging and the like, and has higher power output and energy up to 55 percent. The ubiquitous and untimely energy can be converted into electric energy capable of driving small movable electronic devices by utilizing a micro-nano technology, and then a Self-driven (Self-powered) micro-nano system is manufactured. The fast and convenient electric energy obtaining mode becomes a new-era new energy research direction, such as solar energy, biological energy, vibration energy, muscle activity energy, deformation energy, chemical energy, micro-wind energy, heat energy and the like.
The human body is required to move every day, namely walking, and the mechanical energy generated in the walking process can be effectively utilized and converted into electric energy. At present, a corresponding technology takes liquid metal as an electrode material, collects mechanical energy generated by human motion friction and converts the mechanical energy into electric energy, for example, the liquid metal in CN106992707A is injected into an organic silicon rubber cavity to form a single-motor mode nano generator, and the silicon rubber is contacted with skin to generate friction to generate charges, so that the liquid metal is induced to generate charge flow. But if be applied to the shoe-pad utilization people at the in-process of walking, when generating electricity through the friction kinetic energy, because the human body can not directly contact with the frictional layer, therefore lead to mechanical energy to hardly effectively collect, and because the sole effort is big and inhomogeneous, the mechanical energy that different positions produced is not of uniform size, the electric charge that produces among the parallel structure that a plurality of friction nanometer generator unit vertically and horizontally staggered weaves flows the homogeneity relatively poor, play the effect that increases output current, not only cause and send out the nanometer generator unit of friction extravagant, and inhomogeneous current output can lead to the poor stability of output electric energy, produce negative effects to the life of energy storage ware.
Disclosure of Invention
The invention aims to provide a liquid metal friction nanometer power generation insole. The power generation insole has high output voltage and short-circuit current and excellent charge circulation stability.
The invention also aims to provide a preparation method of the liquid metal friction nanometer power generation insole.
The purpose of the invention is realized by the following technical scheme:
a liquid metal friction nanometer power generation insole is characterized in that: be provided with friction nano power generation device in the shoe-pad, friction nano power generation device is multilayer composite construction, and liquid metal layer, nylon cloth, aluminium foil or copper foil and cardboard that liquid metal friction nano power generation structure that the liquid metal nano power generation fibre woven that is cardboard, aluminium foil or copper foil more than two in proper order is constituteed side by side, nylon cloth is with aluminium foil or copper foil and the cladding of hardboard and fixed on its surface, liquid metal nano power generation fibre comprises liquid metal, epoxy AB glue, silicone tube and electrically conductive copper wire, and wherein liquid metal is full of inside the silicone tube, and epoxy AB glue seals at the both ends of silicone tube, and the mouth of pipe has the copper line to draw forth.
Furthermore, the diameter of the silica gel tube in the nanometer power generation fibers is 1-1.6 mm, the diameter of liquid metal in the silica gel tube is 500-600 microns, and the weaving is performed by alternately weaving every two nanometer power generation fibers.
The performance of the liquid metal friction nanometer power generation is related to the friction area, the applied friction force, the uniformity and the frequency, and is also closely related to the structure of the liquid metal friction nanometer power generation device. According to the invention, liquid metal is added into silicone tubes with specific inner and outer diameters, friction is generated between the silicone tubes and nylon materials, the charge quantity generated by friction surfaces is obviously improved under the action of copper foils or aluminum foils on an upper layer and a lower layer, charge distribution is homogenized, stable and high current and voltage are generated, the liquid metal friction nanometer power generation fibers provide a circulation path for large current through a specific cross weaving structure, the uniform flowing charge quantity borne by the liquid metal in each silicone tube is ensured, the final output voltage and short-circuit current are excellent in stability, and the damage of unstable current to an energy storage device is reduced.
The cross-woven liquid metal layer is arranged at the position of the front sole and the heel of the insole.
The preparation method of the liquid metal friction nanometer power generation insole is characterized by comprising the following steps: the preparation method comprises the steps of preparing a liquid metal friction nano power generation device, and specifically comprises the preparation of a liquid metal friction layer and a nylon friction layer, wherein the liquid metal friction layer is prepared by mixing Ga (gallium) and In (indium), the liquid metal is filled into a silica gel tube, two ends of the liquid metal are inserted into copper wires to be contacted with the liquid metal, the copper wires are led out of the silica gel tube, the two ends of the silica gel tube are sealed by epoxy resin AB glue, liquid metal friction nano power generation fibers are obtained after solidification, two liquid metal friction nano power generation fibers are woven In a crossed mode to form an independent liquid metal friction nano power generation structure, and more than two liquid metal friction nano power generation structure monomers are arranged In parallel to form a liquid metal layer.
The cross weaving is to arrange two liquid metal friction nanometer power generation fibers in a mutually perpendicular mode, the liquid metal friction nanometer power generation fibers on the bottom layer are crossed, then the liquid metal friction nanometer power generation fibers on the upper layer are crossed above a cross point formed by the bottom layer in a crossed mode, and the process is repeated to form a poor weaving liquid metal friction nanometer power generation structure.
Further, the liquid metal is prepared by performing water bath on Ga at 60-70 ℃ for 20-30 min, then adding solid In, performing water bath at 60 ℃ for 30-40 min, and performing magnetic stirring In the water bath process.
Further, the mass ratio of Ga to In was 3: 1.
Further, the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, two ends of a silicone tube are sealed, and curing is carried out for 4-5 hours.
The nylon friction layer is prepared by taking a layer of hard board adhered with copper foil or aluminum foil, covering a layer of nylon cloth, bonding and fixing the edge, and contacting the surface adhered with the copper foil or the aluminum foil with a liquid metal layer downwards to form the nylon friction layer.
Most specifically, the preparation method of the liquid metal friction nanometer power generation insole is characterized by comprising the following steps of preparing a liquid metal friction nanometer power generation device:
s1 preparation of liquid metal
Carrying out water bath on Ga at 60-70 ℃ for 20-30 min, then adding solid In, continuing to carry out water bath at 60 ℃ for 30-40 min, and carrying out magnetic stirring In the water bath process, wherein the mass ratio of Ga to In is 3: 1;
s2, preparing a liquid metal friction nanometer power generation structure:
filling liquid metal into a silica gel tube, inserting copper wires at two ends of the silica gel tube to be contacted with the liquid metal, leading the copper wires out of the silica gel tube, sealing two ends of the silica gel tube by using epoxy resin AB glue, and curing to obtain the liquid metal friction nano power generation fiber, wherein the outer diameter of the silica gel tube is 1-1.6 mm, the inner diameter of the silica gel tube is 500-600 mu m, the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, the two ends of the silica gel tube are sealed, and the epoxy resin AB glue is cured for 4-5 hours to form the liquid metal friction nano power generation fiber;
the two liquid metal friction nanometer power generation fibers are woven in a crossed mode to form an independent liquid metal friction nanometer power generation structure;
s3, forming a multilayer structure
The method comprises the steps of taking a hardboard as a substrate, pasting a layer of copper foil or aluminum foil on the surface of the substrate, then placing more than two liquid metal friction nanometer power generation structure monomers on the surface of the copper foil or the aluminum foil in parallel to form a liquid metal layer, taking a layer of the hardboard pasted with the copper foil or the aluminum foil, covering a layer of nylon cloth, fixing the edge to be used as a nylon friction layer, and enabling the side pasted with the copper foil or the aluminum foil to face downwards to be in contact with the liquid metal layer.
The invention has the following technical effects:
the liquid metal friction nanometer power generation insole prepared by the invention has the advantages that the excellent open-circuit voltage reaches 64V, the short-circuit current reaches 1.23A, the stability of the generated voltage and current is excellent, and the liquid metal friction nanometer power generation insole does not need to be in contact with the skin of a human body for friction; the preparation cost is low, the cost of a pair of insoles is only within 20 yuan, and the insole also has the function of power generation under the condition of not losing the basic performance of the insoles, thereby greatly bringing convenience to life.
Drawings
FIG. 1: the invention discloses a layered structure of a liquid metal nano power generation device and a schematic structural diagram of a liquid metal nano power generation fiber.
FIG. 2: the invention discloses a physical diagram of a liquid metal nano power generation fiber.
FIG. 3: different woven material graphs of the liquid metal nanometer power generation fiber prepared by the invention are shown.
FIG. 4: and (3) an electrical property detection curve diagram of the liquid metal nano power generation fiber in different weaving modes.
FIG. 5: the electrical property detection curve of the liquid metal friction nanometer power generation insole prepared by the invention.
FIG. 6: and an electrical property detection curve graph of the liquid metal friction nanometer power generation insole prepared by adopting a criss-cross woven net-forming structure.
Detailed Description
The present invention is described in detail below by way of examples, it should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and those skilled in the art can make some insubstantial modifications and adaptations of the present invention based on the above-mentioned disclosure.
Example 1
A method for preparing liquid metal friction nanometer power generation insoles comprises the preparation of a liquid metal nanometer power generation device, and comprises the following steps:
s1 preparation of liquid metal
Carrying out water bath on Ga at 70 ℃ for 20min, then adding solid In, continuing to carry out water bath at 60 ℃ for 30min, and carrying out magnetic stirring In the water bath process, wherein the mass ratio of Ga to In is 3: 1;
s2, preparing a liquid metal friction nanometer power generation structure:
filling liquid metal into a silica gel tube, inserting copper wires at two ends of the silica gel tube to be contacted with the liquid metal, leading the copper wires out of the silica gel tube, sealing two ends of the silica gel tube by using epoxy resin AB glue, and curing to obtain the liquid metal friction nano power generation fiber, wherein the outer diameter of the silica gel tube is 1.6mm, the inner diameter of the silica gel tube is 600 mu m, the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, the two ends of the silica gel tube are sealed, and the liquid metal friction nano power generation fiber is formed after curing for 4 hours;
the two liquid metal friction nanometer power generation fibers are woven in a crossed mode to form an independent liquid metal friction nanometer power generation structure;
s3, forming a multilayer structure
The method comprises the steps of taking a hardboard as a substrate, pasting a layer of aluminum foil on the surface of the substrate, then arranging two liquid metal friction nanometer power generation structure monomers in parallel at the position, corresponding to a front sole, on the surface of the aluminum foil, taking another two liquid metal friction nanometer power generation structure monomers in parallel at the position, corresponding to a heel, on the surface of the aluminum foil to form a liquid metal layer, taking a layer of hardboard pasted with the aluminum foil, covering a layer of nylon cloth on the hardboard, fixing the edge to be used as a nylon friction layer, and enabling the side pasted with the aluminum foil to face downwards to be in contact with the liquid metal layer.
Example 2
A preparation method of a liquid metal friction nanometer power generation insole comprises the preparation of a liquid metal friction nanometer power generation device, and comprises the following steps:
s1 preparation of liquid metal
Carrying out water bath on Ga at 65 ℃ for 25min, then adding solid In, continuing to carry out water bath at the same temperature for 35min, and carrying out magnetic stirring In the water bath process, wherein the mass ratio of Ga to In is 3: 1;
s2, preparing a liquid metal friction nanometer power generation structure:
filling liquid metal into a silica gel tube, inserting copper wires at two ends of the silica gel tube to be contacted with the liquid metal, leading the copper wires out of the silica gel tube, sealing two ends of the silica gel tube by using epoxy resin AB glue, and curing to obtain the liquid metal friction nano power generation fiber, wherein the outer diameter of the silica gel tube is 1.2mm, the inner diameter of the silica gel tube is 500 mu m, the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, the two ends of the silica gel tube are sealed, and the liquid metal friction nano power generation fiber is formed after curing for 4.5 hours;
the two liquid metal friction nanometer power generation fibers are woven in a crossed mode to form an independent liquid metal friction nanometer power generation structure;
s3, forming a multilayer structure
The method comprises the steps of taking a hardboard as a substrate, pasting a layer of aluminum foil on the surface of the substrate, then arranging two liquid metal friction nanometer power generation structure monomers in parallel at the position, corresponding to the front sole, on the surface of the aluminum foil, taking another two liquid metal friction nanometer power generation structure monomers in parallel at the position, corresponding to the heel, on the surface of the aluminum foil to form a liquid metal layer, taking a layer of hardboard pasted with the aluminum foil, covering a layer of nylon cloth on the hardboard, fixing the edge to be used as a nylon friction layer, and enabling the side pasted with the copper foil or the aluminum foil to face downwards to be in contact with the liquid metal layer.
Example 3
A preparation method of a liquid metal friction nanometer power generation insole comprises the preparation of a liquid metal friction nanometer power generation device, and comprises the following steps:
s1 preparation of liquid metal
Carrying out water bath on Ga at 60 ℃ for 30min, then adding solid In, carrying out water bath at 60 ℃ for 40min, and carrying out magnetic stirring In the water bath process, wherein the mass ratio of Ga to In is 3: 1;
s2, preparing a liquid metal friction nanometer power generation structure:
filling liquid metal into a silica gel tube, inserting copper wires at two ends of the silica gel tube to be contacted with the liquid metal, leading the copper wires out of the silica gel tube, sealing two ends of the silica gel tube by using epoxy resin AB glue, and curing to obtain the liquid metal friction nano power generation fiber, wherein the outer diameter of the silica gel tube is 1mm, the inner diameter of the silica gel tube is 500 mu m, the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, the two ends of the silica gel tube are sealed, and the liquid metal friction nano power generation fiber is formed after curing for 5 hours;
the two liquid metal friction nanometer power generation fibers are woven in a crossed mode to form an independent liquid metal friction nanometer power generation structure;
s3, forming a multilayer structure
The method comprises the steps of taking a hardboard as a substrate, pasting a layer of copper foil on the surface of the substrate, then arranging two liquid metal friction nanometer power generation structure monomers in parallel at the position, corresponding to a front sole, on the surface of an aluminum foil, taking another two liquid metal friction nanometer power generation structure monomers in parallel at the position, corresponding to a heel, on the surface of the aluminum foil to form a liquid metal layer, taking a layer of the hardboard pasted with the copper foil, covering a layer of nylon cloth on the hardboard, fixing the edge to be used as a nylon friction layer, and enabling the side pasted with the copper foil to face downwards to be in contact with the liquid metal layer.
Example 4
And (3) testing the power generation performance of different braided liquid metal friction nano power generation structures:
the single liquid metal friction nano power generation structure prepared in example 3 of the present invention is counted as a power generation structure (a) as shown in fig. 3 (a), the liquid metal friction nano power generation fiber prepared in example 3 of the present invention is woven into a criss-cross mesh structure as shown in fig. 3 (b) and counted as a power generation structure (b), and the liquid metal friction nano power generation fiber prepared in example 3 of the present invention is woven into a spiral structure as shown in fig. 3 (c) and counted as a power generation structure (c).
And (3) carrying out electrical performance test on the 3 liquid metal friction nanometer power generation structures: under the same friction environment, the detection result is that the maximum output voltage of the power generation structure (a) is 142.9mV, and the short-circuit current is 0.81A, as shown in FIG. 4 (a) and FIG. 4 (b); the maximum output voltage of the power generation structure (b) was 114.2mV, and the short-circuit current was 0.32A, as shown in fig. 4 (c) and 4 (d); the maximum output voltage of the power generation structure (c) was 92.9mV, and the short-circuit current reached 1.06A, as shown in fig. 4 (e) and 4 (f).
Example 5
The friction nanometer power generation device prepared by the invention is counted as a friction nanometer power generation device (a), the power generation structures (b) are prepared by overlapping the friction nanometer power generation devices in the insole of the invention and are respectively counted as friction nanometer power generation devices (b) which are respectively arranged in the insole, and because the power generation structures with the spiral structures are arranged in the insole, the smoothness is poor and the comfort is extremely poor, the friction nanometer power generation devices are not tested by adopting the spiral structures.
The electric performance test of the shoe pad finished product prepared by the friction nano power generation device is carried out under the conditions that the weight is 65kg, the walking speed is 4-5 km/h and the step pitch of each step is about 60-70 cm, and the final result shows that the maximum output voltage generated in the shoe pad finished product prepared by the invention is about 150V and the short-circuit current is 1.23A, and in the process, the voltage and the current have good stability and keep stable output, as shown in figure 5. As shown in fig. 6, the maximum output voltage generated in the finished insole prepared by the friction nano-generator (b) is about 140V, and the short-circuit current is about 0.56A, and it is obvious that the output voltage and the short-circuit current both show great fluctuation, and the output stability is very poor, which may cause the reduction of the service life of the energy storage device.
The liquid metal rubs the nano power generation fiber, and the maximum output voltage of the fiber is only millivolt level. Compared with the integral liquid metal friction nano power generation device, the prepared liquid metal friction nano power generation device can effectively increase the friction area and effectively promote the output performance of the liquid metal friction nano power generation structure. After the area is increased, nylon is used as a friction material, the other two sides of the nylon, which are not in contact with the liquid metal layer, are in contact with the copper foil or the aluminum foil, stable output voltage and short-circuit current can be obtained through different weaving modes, and the output performance of the liquid metal friction nano power generation structure is improved. The output voltage can reach the volt level, and the output performance of the liquid metal friction nano power generation device is effectively improved.
The liquid metal friction nanometer power generation device can be combined with wireless charging, and can store energy for electronic equipment in the future. The device can be applied to insoles, and can be added to clothes, vehicle tires and other devices which are easy to be subjected to friction and pressure, so that the energy problem can be relieved by large-scale popularization.
Claims (7)
1. A liquid metal friction nanometer power generation insole is characterized in that: be provided with friction nano power generation device in the shoe-pad, friction nano power generation device is multilayer composite construction, by supreme cardboard, aluminium foil or copper foil, more than two liquid metal friction nano power generation structures that are woven by liquid metal nano power generation fibre constitute liquid metal layer, nylon cloth, aluminium foil or copper foil and cardboard side by side in proper order, liquid metal nano power generation fibre comprises liquid metal, epoxy AB glue, silicone tube and electrically conductive copper wire, and wherein liquid metal is full of inside the silicone tube, and epoxy AB glue is sealed at the both ends of silicone tube, and the mouth of pipe has the copper line to draw forth.
2. The liquid metal friction nano power generation insole as claimed in claim 1, wherein: the diameter of the silica gel tube in the nanometer power generation fibers is 1-1.6 mm, the diameter of liquid metal in the silica gel tube is 500-600 microns, and the weaving is performed by alternately weaving every two nanometer power generation fibers.
3. A method for preparing a liquid metal friction nano power generation insole as claimed in claim 2, wherein the method comprises the following steps: the liquid metal friction nano power generation device comprises a liquid metal friction layer and a nylon friction layer, wherein the liquid metal friction layer is prepared by mixing Ga (gallium) and In (indium) to prepare liquid metal, the liquid metal is filled into a silica gel tube, two ends of the liquid metal are inserted into copper wires to be contacted with the liquid metal, the copper wires are led out of the silica gel tube, epoxy resin AB glue is used for sealing two ends of the silica gel tube, liquid metal friction nano power generation fibers are obtained after solidification, two liquid metal friction nano power generation fibers are woven In a crossed mode to form an independent liquid metal friction nano power generation structure, and more than two liquid metal friction nano power generation structure monomers are arranged In parallel to form a liquid metal layer.
4. The method for preparing a liquid metal friction nano power generation insole as claimed in claim 3, wherein the method comprises the following steps: the liquid metal is prepared by carrying out water bath on Ga at 60-70 ℃ for 20-30 min, then adding solid In, carrying out water bath at 60 ℃ for 30-40 min, and carrying out magnetic stirring In the water bath process.
5. The method for preparing a liquid metal friction nano power generation insole as claimed in claim 3 or 4, wherein the method comprises the following steps: the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, two ends of a silicone tube are sealed, and curing is carried out for 4-5 hours.
6. The method for preparing a liquid metal friction nano power generation insole as claimed in any one of claims 3 to 5, wherein: the nylon friction layer is formed by taking a layer of hard board adhered with copper foil or aluminum foil, sleeving a layer of nylon cloth on the hard board, bonding and fixing the edge, and enabling the surface adhered with the copper foil or the aluminum foil to face downwards to be in contact with a liquid metal layer to serve as the nylon friction layer.
7. The preparation method of the liquid metal friction nanometer power generation insole is characterized by comprising the following steps of:
s1 preparation of liquid metal
Carrying out water bath on Ga at 60-70 ℃ for 20-30 min, then adding solid In, continuing to carry out water bath at 60 ℃ for 30-40 min, and carrying out magnetic stirring In the water bath process;
s2, preparing a liquid metal friction nanometer power generation structure:
filling liquid metal into a silica gel tube, inserting copper wires at two ends of the silica gel tube to be contacted with the liquid metal, leading the copper wires out of the silica gel tube, sealing two ends of the silica gel tube by using epoxy resin AB glue, and curing to obtain the liquid metal friction nano power generation fiber, wherein the outer diameter of the silica gel tube is 1-1.6 mm, the inner diameter of the silica gel tube is 500-600 mu m, the epoxy resin AB glue is stirred and mixed according to the volume ratio of A, B glue of 2:1, the two ends of the silica gel tube are sealed, and the epoxy resin AB glue is cured for 4-5 hours to form the liquid metal friction nano power generation fiber;
the two liquid metal friction nanometer power generation fibers are woven in a crossed mode to form an independent liquid metal friction nanometer power generation structure;
s3, forming a multilayer structure
The method comprises the steps of taking a hardboard as a substrate, pasting a layer of copper foil or aluminum foil on the surface of the substrate, then placing more than two liquid metal friction nanometer power generation structure monomers on the surface of the copper foil or the aluminum foil in parallel to form a liquid metal layer, taking a layer of the hardboard pasted with the copper foil or the aluminum foil, covering a layer of nylon cloth, fixing the edge to be used as a nylon friction layer, and enabling the side pasted with the copper foil or the aluminum foil to face downwards to be in contact with the liquid metal layer.
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| CN114486011A (en) * | 2022-01-29 | 2022-05-13 | 重庆文理学院 | Preparation method of liquid metal touch pressure sensor |
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