CN114414106B - Active power supply flexible pressure sensor - Google Patents
Active power supply flexible pressure sensor Download PDFInfo
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- CN114414106B CN114414106B CN202111515141.3A CN202111515141A CN114414106B CN 114414106 B CN114414106 B CN 114414106B CN 202111515141 A CN202111515141 A CN 202111515141A CN 114414106 B CN114414106 B CN 114414106B
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- 239000000758 substrate Substances 0.000 claims abstract description 27
- 239000011245 gel electrolyte Substances 0.000 claims abstract description 26
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011701 zinc Substances 0.000 claims abstract description 7
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 7
- 239000003792 electrolyte Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 9
- 239000002608 ionic liquid Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000003411 electrode reaction Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000007784 solid electrolyte Substances 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- 230000002269 spontaneous effect Effects 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- AFSJUFFXOPXIOH-UHFFFAOYSA-N 1-ethyl-3-methyl-1,2-dihydroimidazol-1-ium;trifluoromethanesulfonate Chemical compound CC[NH+]1CN(C)C=C1.[O-]S(=O)(=O)C(F)(F)F AFSJUFFXOPXIOH-UHFFFAOYSA-N 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract description 6
- 230000006870 function Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 239000000499 gel Substances 0.000 description 14
- 150000002500 ions Chemical class 0.000 description 13
- 239000000306 component Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000017 hydrogel Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 2
- IBZJNLWLRUHZIX-UHFFFAOYSA-N 1-ethyl-3-methyl-2h-imidazole Chemical compound CCN1CN(C)C=C1 IBZJNLWLRUHZIX-UHFFFAOYSA-N 0.000 description 1
- NJMWOUFKYKNWDW-UHFFFAOYSA-N 1-ethyl-3-methylimidazolium Chemical compound CCN1C=C[N+](C)=C1 NJMWOUFKYKNWDW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- CITILBVTAYEWKR-UHFFFAOYSA-L zinc trifluoromethanesulfonate Substances [Zn+2].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F CITILBVTAYEWKR-UHFFFAOYSA-L 0.000 description 1
- ZMLPZCGHASSGEA-UHFFFAOYSA-M zinc trifluoromethanesulfonate Chemical compound [Zn+2].[O-]S(=O)(=O)C(F)(F)F ZMLPZCGHASSGEA-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N3/00—Generators in which thermal or kinetic energy is converted into electrical energy by ionisation of a fluid and removal of the charge therefrom
Abstract
The invention discloses an active power supply flexible pressure sensor which is a zinc-air battery with a sandwich structure, and comprises an anode, a cathode and an ion gel electrolyte, wherein the anode and the cathode are oppositely arranged; the anode is a flexible zinc-containing electrode, the cathode is a flexible air electrode, and the ionic gel electrolyte is a membrane for piezoresistive sensing, which is formed by ionic gel polymer and a flexible substrate. According to the invention, the zinc-air battery is combined with the pressure sensing principle to obtain the active power supply flexible pressure sensing device with the sandwich structure, the device is compatible with the dual functions of power generation and pressure sensing, the integration of power generation and sensing technology is realized, the structure is simple, the device is light, thin and convenient, the energy is self-sufficient, the device is independent and portable, and the device is suitable for being used as a wearable flexible pressure sensor.
Description
Technical Field
The invention belongs to the technical field of pressure sensing, and particularly relates to an active power supply flexible pressure sensor.
Background
Along with the rapid popularization of intelligent terminals, flexible wearable electronics widely applied to aspects of human life such as electronic skin, wearable physiological monitoring and treatment devices, flexible conductive fabrics, thin film transistors, transparent thin film flexible circuits and the like have led to continuous research at home and abroad. The sensor is used as one of core components, and directly influences the functional design and future development of the wearable equipment. Among them, the flexible wearable electronic sensor is particularly paid attention to by virtue of its thinness, portability, excellent electrical properties, high integration level, and the like.
In recent years, significant advances have been made in the field of wearable implantable sensors, such as the use of electronic skin to communicate skin haptic information to the brain, monitoring pulse rate, voice recognition, the use of three-dimensional microelectrodes to achieve cortical control of the prosthesis, the use of cochlear implants to restore patient hearing, and the like. The flexible sensor unit, the transmission module and the self-sustaining power supply form a flexible sensor system. However, most of the sensors currently require an external power supply to drive the sensors to operate, and most of the power supply systems used are rigid batteries, so that certain problems are brought to the wearable form, and the power unit becomes one of the biggest limitations of the flexible sensors for achieving the characteristics. Therefore, self-powered flexible sensing technology is the focus of research in the current field. Through literature investigation, the existing self-powered sensor mainly has two forms: the piezoelectric/triboelectric nano generator sensor directly uses voltage/current generated by external force as a sensing signal; and secondly, integrating the sensor with a flexible battery, and supplying power to the sensor through the flexible battery. However, the piezoelectric/friction point nano-power generation sensor cannot reliably and continuously work as a sole power source due to the fact that the actual output power existing in the alternating current output is small, and the time dependence and low power consumption problems existing in the process of storing electric energy in an electrochemical cell are solved, and the problem that the battery is needed by the wearable device cannot be solved. In contrast, integrating a sensor with a flexible battery has attracted considerable attention, but it still presents similar compatibility issues in terms of the functionality of the sensing material of the sensor with the powering material of the flexible battery. Therefore, for low power flexible sensors, flexible adjustable power supplies or automatic operation without external power supply becomes critical in the sensing field, and the development of actively powered flexible pressure sensors is necessary.
Disclosure of Invention
In view of the above, the present invention provides an active power supply flexible pressure sensor, which combines the pressure sensor principle with a flexible zinc-air battery to enable the same structural device to simultaneously satisfy the power supply and pressure sensing functions.
The technical scheme adopted by the invention is as follows:
the active power supply flexible pressure sensor is a zinc-air battery with a sandwich structure and comprises an anode and a cathode which are oppositely arranged, and an ion gel electrolyte which is clamped between the anode and the cathode;
The anode is a flexible zinc-containing electrode, the cathode is a flexible air electrode, and the ionic gel electrolyte is a membrane for piezoresistive sensing, which is formed by ionic gel polymer and a flexible substrate.
Further, the ionic gel electrolyte is obtained by soaking and drying the flexible substrate in ionic gel polymer.
Further, the flexible substrate is a fiber paper or a fiber fabric.
Further, the ionic gel polymer comprises the following components in parts by weight:
7-15 parts of polyvinyl alcohol, 5-40 parts of ionic liquid, 1-20 parts of electrolyte and 100 parts of water.
Further, the electrolyte is at least one of ammonium chloride, potassium chloride, lithium triflate, zinc chloride and zinc ion-containing salts.
Wherein the zinc ion-containing salt can be zinc trifluoromethane sulfonate, etc.
Further, the ionic liquid is-ethyl-methylimidazole trifluoro methanesulfonate ionic liquid.
Further, the cathode includes a first flexible conductive substrate coated with a catalyst on at least a surface of the first flexible conductive substrate in contact with the ion gel electrolyte.
Further, the catalyst contained in the catalyst comprises at least one of manganese dioxide, a nano carbon material, silver powder or a metal material with catalytic performance.
Further, the anode comprises a second flexible conductive matrix, and zinc powder slurry is coated on at least the surface of the second flexible conductive matrix, which is in contact with the ionic gel electrolyte;
Or the anode is zinc foil.
Further, the first flexible conductive matrix and/or the second flexible conductive matrix is conductive fiber paper or conductive fiber cloth
The beneficial effects of the invention are as follows:
1. The invention combines the zinc-air battery with the pressure sensing principle, and combines the zinc-air battery with the pressure sensing principle into one. The invention fundamentally solves the problem of leakage of the electrolyte of the zinc-air battery by developing the ion gel electrolyte, and simultaneously realizes the film flexibility of the zinc-air, and the ion gel electrolyte replaces the traditional alkaline aqueous electrolyte, so that the zinc anode has higher thermal stability and negligible vapor pressure based on the ion liquid, the problems of hydrogen evolution side reaction and corrosion are avoided, the anode utilization rate and the energy conversion efficiency are effectively improved, the problem of electrolyte dryness is solved, and the flexible zinc-air battery suitable for the pressure sensor is obtained;
2. The invention is obtained by soaking and drying a flexible substrate in an ionic gel polymer, namely, the ionic gel polymer and the flexible substrate are combined to form a membrane material with a piezoresistance sensing characteristic structure to be used as a solid electrolyte membrane of a flexible zinc-air battery. Because the flexible substrate is formed by alternately inserting innumerable fine fibers, the side wall is wrapped by the ionic gel polymer, when pressure is applied to the battery, the internal structure of the flexible substrate and the contact area of the electrode and electrolyte are changed, and the electrode reaction active site is increased, so that the internal resistance of the battery is changed, the output current is finally changed and is used as a sensing signal, and the generated electric quantity can drive the operation of a low-power device to form a self-generating pressure sensor.
3. According to the invention, the zinc-air battery is combined with the pressure sensing principle to obtain the active power supply flexible pressure sensing device with the sandwich structure, the device is compatible with the dual functions of power generation and pressure sensing, the integration of power generation and sensing technology is realized, the structure is simple, the device is light, thin and convenient, the energy is self-sufficient, the device is independent and portable, and the device is suitable for being used as a wearable flexible pressure sensor.
4. The active power supply flexible pressure sensor has various functions, can drive small electronic equipment by self power generation, can detect physiological signals of human bodies and the like, and has good application prospect.
Drawings
Fig. 1 is a schematic structural diagram of an active power supply flexible pressure sensor according to embodiment 1 of the present invention;
Fig. 2 is a diagram of an actively powered flexible pressure sensor regulation LED provided in embodiment 1 of the present invention;
Fig. 3 is a graph of the result of the active power flexible pressure sensor for pulse detection according to embodiment 1 of the present invention;
Fig. 4 is a picture of an actively powered flexible pressure sensor regulation buzzer provided in embodiment 1 of the present invention.
In the figure: 1. an anode; 11. a second flexible conductive substrate; 12. zinc powder slurry; 2. a cathode; 21. a first flexible conductive substrate; 22. a catalyst; 3. an ion gel electrolyte.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention, as all other embodiments that may be obtained by one of ordinary skill in the art without making any inventive effort are within the scope of the present invention based on the embodiments herein.
In the present application, the term "and/or" describes an association relationship of an association object, which means that three relationships may exist, for example, a and/or B may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
In the present application, "at least one" means one or more, and "a plurality" means two or more. The weights of the relevant components mentioned in the description of the embodiments of the present application may refer not only to the specific contents of the components, but also to the proportional relationship between the weights of the components, so long as the contents of the relevant components in the description of the embodiments of the present application are scaled up or down within the scope of the disclosure of the embodiments of the present application. Specifically, the mass in the specification of the embodiment of the application can be a mass unit which is known in the chemical industry field such as mu g, mg, g, kg.
The invention provides an active power supply flexible pressure sensor which is a zinc-air battery with a sandwich structure and comprises an anode, a cathode and an ion gel electrolyte, wherein the anode and the cathode are oppositely arranged;
The anode is a flexible zinc-containing electrode, the cathode is a flexible air electrode, and the ionic gel electrolyte is a membrane for piezoresistive sensing, which is formed by ionic gel polymer and a flexible substrate.
Thus, the zinc-air battery is combined with the pressure sensing principle, and the zinc-air battery and the pressure sensing principle are combined into one. The ionic gel electrolyte fundamentally solves the problem of leakage of the electrolyte of the zinc-air battery, meanwhile, realizes the film flexibility of the zinc-air, replaces the traditional alkaline water-based electrolyte by the ionic gel electrolyte, has higher thermal stability and negligible vapor pressure based on the ionic liquid, ensures that the zinc anode has no hydrogen evolution side reaction and corrosion problems, effectively improves the anode utilization rate and the energy conversion efficiency, solves the problem of electrolyte drying, and obtains the flexible zinc-air battery suitable for the pressure sensor; meanwhile, the ionic gel polymer and the flexible substrate are combined to form a membrane material with a piezoresistance sensing characteristic structure to be used as a solid electrolyte membrane of the flexible zinc-air battery. Because the flexible substrate is formed by alternately inserting innumerable fine fibers, the side wall is wrapped by the ionic gel polymer, when pressure is applied to the battery, the internal structure of the flexible substrate and the contact area of the electrode and electrolyte are changed, and the electrode reaction active site is increased, so that the internal resistance of the battery is changed, the output current is finally changed and is used as a sensing signal, and the generated electric quantity can drive the operation of a low-power device to form a self-generating pressure sensor.
Specifically, the anode, the cathode and the ionic gel electrolyte are assembled into a sandwich structure device by a layer-by-layer superposition method, and the contact area between the electrode and the ionic gel is increased under the action of pressure, so that the interfacial chemical reaction area is increased. The electrodes are connected to a voltage and current detection system, the pressure causes the change of the generated current and the internal resistance of the device, the change is reflected to the system test current or resistance value, and the pressure magnitude and the value of the detected current or internal resistance are in one-to-one correspondence, so that the pressure magnitude can be reversely deduced from the current test current or internal resistance value.
The technical scheme is described below through specific embodiments.
Example 1
The embodiment provides an active power supply flexible pressure sensor which is a zinc-air battery with a sandwich structure and comprises an anode 1, a cathode 2 and an ion gel electrolyte 3, wherein the anode 1 and the cathode 2 are oppositely arranged;
the anode 1 is a flexible zinc-containing electrode, the cathode 2 is a flexible air electrode, and the ionic gel electrolyte 3 is a membrane for piezoresistive sensing, which is formed by ionic gel polymer and a flexible substrate.
Wherein, the anode 1 is obtained by coating zinc powder slurry 12 on one side of a second flexible conductive matrix 11, namely conductive paper, and drying; the cathode 2 is obtained by coating a catalyst 22, that is, silver powder slurry, on one side of a first flexible conductive substrate 21, that is, conductive paper, and drying
The ion gel electrolyte 3 is obtained by immersing and drying a flexible substrate, namely, a fiber paper, in an ion gel polymer. The ionic gel polymer is prepared by polymerizing the following raw materials in parts by weight: 10 parts of polyvinyl alcohol, 30 parts of ionic liquid, 10 parts of electrolyte and 100 parts of water.
The preparation process of the ion gel electrolyte 3 comprises the following steps: adding 10 parts of polyvinyl alcohol (PVA) into 100 parts of distilled water to dissolve to form a hydrogel solution, sequentially adding 30 parts of 1-ethyl-3-methylimidazole trifluoro methanesulfonate ([ EMim ] OTF) ionic liquid and 10 parts of NH 4 Cl, and uniformly stirring to form ionic hydrogel; using fiber paper as a diaphragm, putting the diaphragm into gel ion hydrogel, soaking the diaphragm, taking out the diaphragm, and drying the diaphragm in an oven at 80 ℃ to obtain the ion gel electrolyte 3.
And finally, directly superposing and assembling the anode 1, the cathode 2 and the ionic gel electrolyte 3 into a sandwich structure to form the active power supply type flexible pressure sensor.
The embodiment also performs performance test on the obtained active power supply flexible pressure sensor, specifically: as the power supply performance, the open circuit voltage of the device is 1.0V, the short circuit current density is 3.0mA/cm 2, and as shown in figures 1 and 2, the brightness of the LED can be driven by pressure regulation. Meanwhile, as shown in fig. 3, the wearable sensing application has higher resolution for detecting human body pulse; as shown in fig. 4, the buzzer is driven as a spontaneous voltage sensor.
The present invention is not limited to the above-mentioned embodiments, but any variations in proportion within the scope of the present invention, and any variations or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (7)
1. The active power supply flexible pressure sensor is characterized by comprising a zinc-air battery with a sandwich structure, an anode (1) and a cathode (2) which are oppositely arranged, and an ionic gel electrolyte (3) which is clamped between the anode (1) and the cathode (2);
the anode (1) is a flexible zinc-containing electrode, and the cathode (2) is a flexible air electrode;
The cathode (2) comprises a first flexible conductive matrix (21) and a catalyst (22); the cathode (2) is obtained by coating the catalyst (22) on one side of the first flexible conductive substrate (21) and drying;
The anode (1) comprises a second flexible conductive matrix (11) and zinc powder slurry (12); the anode (1) is obtained by coating the zinc powder slurry (12) on one side of the second flexible conductive matrix (11) and drying;
the ionic gel electrolyte (3) is a solid electrolyte diaphragm for piezoresistance sensing, which is formed by ionic gel polymer and flexible substrate;
the ionic gel electrolyte (3) is obtained by soaking and drying a flexible substrate in an ionic gel polymer;
The flexible substrate is fiber paper or fiber fabric; the side wall of the flexible substrate is wrapped by an ionic gel polymer, the internal structure of the flexible substrate and the contact area of an electrode and an electrolyte are changed by applying pressure to the zinc-air battery, electrode reaction active sites are increased to change the internal resistance of the battery, the output current is changed, the output current is used as a sensing signal, and the generated electric quantity drives a low-power device to operate to form a spontaneous voltage sensor;
The ionic gel polymer is prepared by polymerizing the following components in parts by weight:
7-15 parts of polyvinyl alcohol, 5-40 parts of ionic liquid, 1-20 parts of electrolyte and 100 parts of water.
2. The actively powered flexible pressure sensor of claim 1 wherein said electrolyte is at least one of ammonium chloride, potassium chloride, lithium triflate, zinc chloride, zinc ion-containing salts.
3. An actively powered flexible pressure sensor as defined in claim 1 wherein said ionic liquid is a 1-ethyl-3-methylimidazole triflate ionic liquid.
4. An actively powered flexible pressure sensor according to claim 1, characterized in that said cathode (2) comprises a catalyst (22) coated on at least the surface of said first flexible conductive substrate (21) in contact with said ionic gel electrolyte (3).
5. The actively powered flexible pressure sensor of claim 4 wherein said catalyst (22) comprises at least one of manganese dioxide, nanocarbon materials, silver powder, or metallic materials having catalytic properties.
6. An actively powered flexible pressure sensor according to claim 1, characterized in that said anode (1) comprises a zinc powder slurry (12) coated on at least the surface of said second flexible conductive substrate (11) in contact with said ionic gel electrolyte (3);
or the anode (1) is zinc foil.
7. An actively powered flexible pressure sensor according to claim 1, characterized in that said first flexible conductive matrix (21) and/or said second flexible conductive matrix (11) are conductive fiber paper or conductive fiber cloth.
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| CN109764979A (en) * | 2018-12-18 | 2019-05-17 | 深圳先进技术研究院 | Ion paper, from electronic flexible pressure sensor and preparation method thereof |
| CN109974907A (en) * | 2019-03-15 | 2019-07-05 | 钛深科技(深圳)有限公司 | Integrated pliable pressure sensor of actively powering |
| CN110146198A (en) * | 2019-05-22 | 2019-08-20 | 厦门大学 | A kind of flexibility self energizing pressure sensor |
| CN113075276A (en) * | 2020-01-06 | 2021-07-06 | 青岛大学 | Preparation method of self-powered ionic hydrogel sensor, sensor and application |
| CN214149645U (en) * | 2020-12-04 | 2021-09-07 | 中国科学院深圳先进技术研究院 | Flexible wearable pressure sensor based on elastic cloth |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764979A (en) * | 2018-12-18 | 2019-05-17 | 深圳先进技术研究院 | Ion paper, from electronic flexible pressure sensor and preparation method thereof |
| CN109974907A (en) * | 2019-03-15 | 2019-07-05 | 钛深科技(深圳)有限公司 | Integrated pliable pressure sensor of actively powering |
| CN110146198A (en) * | 2019-05-22 | 2019-08-20 | 厦门大学 | A kind of flexibility self energizing pressure sensor |
| CN113075276A (en) * | 2020-01-06 | 2021-07-06 | 青岛大学 | Preparation method of self-powered ionic hydrogel sensor, sensor and application |
| CN214149645U (en) * | 2020-12-04 | 2021-09-07 | 中国科学院深圳先进技术研究院 | Flexible wearable pressure sensor based on elastic cloth |
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