CN113517388B - Degradable piezoelectric energy collector and preparation method thereof - Google Patents
Degradable piezoelectric energy collector and preparation method thereof Download PDFInfo
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- CN113517388B CN113517388B CN202110558458.9A CN202110558458A CN113517388B CN 113517388 B CN113517388 B CN 113517388B CN 202110558458 A CN202110558458 A CN 202110558458A CN 113517388 B CN113517388 B CN 113517388B
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- 238000002360 preparation method Methods 0.000 title abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 63
- 239000012620 biological material Substances 0.000 claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000010287 polarization Effects 0.000 claims abstract description 12
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 17
- 239000004626 polylactic acid Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 9
- 108010022355 Fibroins Proteins 0.000 claims description 7
- 229920000954 Polyglycolide Polymers 0.000 claims description 7
- 229920000331 Polyhydroxybutyrate Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000005015 poly(hydroxybutyrate) Substances 0.000 claims description 7
- 229920001610 polycaprolactone Polymers 0.000 claims description 7
- 239000004633 polyglycolic acid Substances 0.000 claims description 7
- 150000001413 amino acids Chemical class 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 239000007888 film coating Substances 0.000 claims description 6
- 238000009501 film coating Methods 0.000 claims description 6
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 6
- 238000004528 spin coating Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000560 biocompatible material Substances 0.000 abstract description 4
- 239000005022 packaging material Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 10
- 108010016626 Dipeptides Proteins 0.000 description 7
- COLNVLDHVKWLRT-QMMMGPOBSA-N L-phenylalanine Chemical compound OC(=O)[C@@H](N)CC1=CC=CC=C1 COLNVLDHVKWLRT-QMMMGPOBSA-N 0.000 description 7
- COLNVLDHVKWLRT-UHFFFAOYSA-N phenylalanine Natural products OC(=O)C(N)CC1=CC=CC=C1 COLNVLDHVKWLRT-UHFFFAOYSA-N 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
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- 238000005538 encapsulation Methods 0.000 description 2
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 239000013078 crystal Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000002127 nanobelt Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/857—Macromolecular compositions
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
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- Manufacturing & Machinery (AREA)
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- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention relates to a degradable piezoelectric energy collector and a preparation method thereof, wherein the preparation method comprises the steps of growing a piezoelectric biomaterial array on a substrate; preparing a degradable film on a substrate, so that the degradable film coats the piezoelectric biomaterial array; stripping the degradable film coated with the piezoelectric biomaterial array from the substrate to obtain a degradable piezoelectric layer; preparing two degradable electrodes, wherein the degradable electrodes comprise a degradable substrate layer and a metal layer which are arranged in a laminated manner; the degradable piezoelectric layer is placed between two degradable electrodes, and the degradable piezoelectric energy collector is formed by bonding, and the metal layer is positioned on one side close to the degradable piezoelectric layer. According to the preparation method, the piezoelectric biological material array with the single growth direction and polarization direction is peeled off from the hard substrate, and the degradable and biocompatible material is used as the electrode and the packaging material of the degradable piezoelectric energy collector, so that the prepared piezoelectric energy collector has degradability and biocompatibility.
Description
Technical Field
The invention belongs to the technical field of energy collectors, and particularly relates to a degradable piezoelectric energy collector and a preparation method thereof.
Background
Piezoelectric energy collectors are energy conversion devices based on piezoelectric materials that are capable of efficiently converting mechanical energy (e.g., blue energy, wind energy, acoustic energy, and movement of living organisms, etc.) into secondary usable electrical energy, and are considered to be the most promising type of green energy, where nano-generators capable of electromechanical conversion offer a completely new solution to continuous energy supply.
Piezoelectric effects are present in many materials having non-centrosymmetric crystal structures, particularly ceramic materials, which, although having a relatively high piezoelectric constant, are naturally brittle, resulting in the ceramic materials being susceptible to breakage under the force, limiting their use in flexible electronic devices. Although the flexibility of the piezoelectric energy collector can be increased by using nano belts, nano wires and the like through technological improvement, the synthesis temperature is higher, and the ceramic material generally contains biocompatible elements, so that most piezoelectric energy collectors at present do not have complete degradability and biocompatibility, and the application of the piezoelectric energy collector in the field of implantable electronic devices is limited.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a degradable piezoelectric energy collector and a preparation method thereof. The technical problems to be solved by the invention are realized by the following technical scheme:
the invention provides a preparation method of a degradable piezoelectric energy collector, which comprises the following steps:
growing an array of piezoelectric biological materials on a substrate;
preparing a degradable film on the substrate, so that the degradable film coats the piezoelectric biomaterial array;
peeling the degradable film coated with the piezoelectric biomaterial array from the substrate to obtain a degradable piezoelectric layer;
preparing two degradable electrodes, wherein the degradable electrodes comprise a degradable substrate layer and a metal layer which are arranged in a laminated manner;
the degradable piezoelectric layer is placed between the two degradable electrodes, the degradable piezoelectric layer is bonded to form a degradable piezoelectric energy collector, and the metal layer is located on one side close to the degradable piezoelectric layer.
In one embodiment of the invention, the piezoelectric biomaterial array has a single growth direction and polarization direction.
In one embodiment of the present invention, the material of the piezoelectric biomaterial array is one or more of peptide, amino acid, cellulose.
In one embodiment of the invention, growing an array of piezoelectric biomaterials on a substrate comprises:
growing an array of biological materials on a substrate, the array of biological materials being perpendicular to the substrate;
and applying an electric field parallel to the growth direction of the biological material array to realize a single polarization direction to obtain the piezoelectric biological material array.
In one embodiment of the invention, the electric field strength is-10 KV.
In one embodiment of the present invention, preparing a degradable film on the substrate such that the degradable film encapsulates the piezoelectric biomaterial array comprises:
and spin-coating a degradable solution on the substrate on which the piezoelectric biomaterial array grows, so that the degradable solution completely covers the piezoelectric biomaterial array, and forming a degradable film coating the piezoelectric biomaterial array after drying.
In one embodiment of the present invention, the material of the degradable film and the degradable substrate layer is one of polylactic acid, silk fibroin, polyglycolic acid, polyepsilon caprolactone or polyhydroxybutyrate.
In one embodiment of the invention, the thickness of the degradable substrate layer is 0.2-0.4mm.
The invention also provides a degradable piezoelectric energy collector prepared by the preparation method according to any one of the above embodiments, comprising: a first degradable electrode, a degradable piezoelectric layer and a second degradable electrode which are sequentially arranged from bottom to top,
the first degradable electrode and the second degradable electrode comprise a degradable substrate layer and a metal layer which are arranged in a stacked manner, and the metal layer is positioned on one side close to the degradable piezoelectric layer;
the degradable piezoelectric layer comprises a piezoelectric biomaterial array and a degradable film coating the piezoelectric biomaterial array, wherein the piezoelectric biomaterial array has a single growth direction and polarization direction.
In one embodiment of the present invention, the material of the piezoelectric biomaterial array is one or more of peptide, amino acid and cellulose;
the degradable film and the degradable substrate layer are made of one of polylactic acid, silk fibroin, polyglycolic acid, poly epsilon-caprolactone or polyhydroxybutyrate.
Compared with the prior art, the invention has the beneficial effects that:
according to the preparation method of the degradable piezoelectric energy collector, the piezoelectric biological material array with the single growth direction and the polarization direction is peeled off from the hard substrate, and the degradable and biocompatible materials are used as the electrode and the packaging material of the degradable piezoelectric energy collector, so that the prepared piezoelectric energy collector has degradability and biocompatibility, and the application range of the piezoelectric energy collector is greatly expanded, and the application range of the piezoelectric energy collector is especially in the biomedical field.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a method for manufacturing a degradable piezoelectric energy collector according to an embodiment of the present invention;
FIGS. 2 a-2 f are flow process diagrams of a method for manufacturing a degradable piezoelectric energy collector according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a degradable piezoelectric energy collector according to an embodiment of the present invention;
FIG. 4 is an electrical diagram of a degradable piezoelectric energy harvester according to an embodiment of the invention;
fig. 5 is a degradation process image of a degradable piezoelectric energy collector according to an embodiment of the present invention.
Detailed Description
In order to further illustrate the technical means and effects adopted by the invention to achieve the preset aim, the invention provides a degradable electric energy collector and a preparation method thereof, which are described in detail below with reference to the accompanying drawings and the detailed description.
The foregoing and other features, aspects, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments when taken in conjunction with the accompanying drawings. The technical means and effects adopted by the present invention to achieve the intended purpose can be more deeply and specifically understood through the description of the specific embodiments, however, the attached drawings are provided for reference and description only, and are not intended to limit the technical scheme of the present invention.
Example 1
Referring to fig. 1, fig. 1 is a schematic diagram of a method for manufacturing a degradable piezoelectric energy collector according to an embodiment of the invention. As shown in the figure, the preparation method of the embodiment includes:
s1: growing an array of piezoelectric biological materials on a substrate;
in this embodiment, the piezoelectric biomaterial array has a single growth direction and polarization direction, and the material of the piezoelectric biomaterial array is one or more of peptide, amino acid and cellulose. The substrate is typically a rigid substrate, such as a silicon wafer.
In this embodiment, the hard substrate is selected, the piezoelectric biomaterial array is prepared on the hard substrate, and then peeled off, instead of directly preparing the piezoelectric biomaterial array on the degradable film, because the surface of the hard substrate is smoother, the piezoelectric biomaterial array is beneficial to growth, the surface of the degradable film is uneven, the array in a single direction cannot be grown, and then the solvent used in the growth process can corrode the degradable film.
Specifically, S1 includes:
s11: growing a biological material array on the substrate, the biological material array being perpendicular to the substrate;
alternatively, an array of biological materials perpendicular to the substrate is grown on the substrate by epitaxial growth.
S12: and applying an electric field parallel to the growth direction of the biological material array to realize a single polarization direction to obtain the piezoelectric biological material array.
In this embodiment, the direction of the applied electric field is the vertical direction, and the electric field strength is-10 KV.
S2: preparing a degradable film on a substrate, so that the degradable film coats the piezoelectric biomaterial array;
specifically, the method comprises the following steps: and spin-coating a degradable solution on the substrate on which the piezoelectric biomaterial array grows, so that the degradable solution completely covers the piezoelectric biomaterial array, and forming a degradable film coating the piezoelectric biomaterial array after drying.
In this embodiment, the material of the degradable film is one of polylactic acid, silk fibroin, polyglycolic acid, poly epsilon-caprolactone or polyhydroxybutyrate.
The preparation of the degradable solution will be described by taking polylactic acid as an example, specifically, polylactic acid is put into a chloroform solution and stirred for 30 minutes by a magnetic stirrer to prepare a polylactic acid solution with a concentration of 50mg/mL.
Alternatively, the spin-coating speed of the degradable solution is 2000rad +. s -4000rad/ s 。
S3: stripping the degradable film coated with the piezoelectric biomaterial array from the substrate to obtain a degradable piezoelectric layer;
in this example, the degradable film coating the piezoelectric biomaterial array was slowly peeled off from the substrate manually.
S4: preparing two degradable electrodes, wherein the degradable electrodes comprise a degradable substrate layer and a metal layer which are arranged in a laminated manner;
in this embodiment, the material of the degradable substrate layer is one of polylactic acid, silk fibroin, polyglycolic acid, poly epsilon-caprolactone or polyhydroxybutyrate. The material of the metal layer is one of magnesium, molybdenum, zinc or titanium.
Optionally, the thickness of the degradable substrate layer is 0.2-0.4mm.
The method specifically comprises the following steps: firstly, preparing a degradable solution, pouring the degradable solution into a container to form a film, obtaining a degradable substrate layer, and then thermally evaporating metal on the degradable substrate layer to prepare the degradable electrode.
S5: the degradable piezoelectric layer is placed between two degradable electrodes, and the degradable piezoelectric energy collector is formed by bonding, and the metal layer is positioned on one side close to the degradable piezoelectric layer.
In this embodiment, the degradable solution serves as an adhesive to bond the degradable piezoelectric layer and the two degradable electrodes together to form a sandwich structure. The degradable substrate layer serves as an encapsulation layer for the degradable piezoelectric energy collector.
It should be noted that, since the degradable piezoelectric layer and the degradable electrode are separately prepared, the preparation sequence is not limited herein, and the degradable electrode may be prepared first and then the degradable piezoelectric layer may be prepared.
According to the preparation method of the degradable piezoelectric energy collector, the piezoelectric biological material array with the single growth direction and the polarization direction is peeled off from the hard substrate, and the degradable and biocompatible materials are used as the electrode and the packaging material of the degradable piezoelectric energy collector, so that the prepared piezoelectric energy collector has degradability and biocompatibility, and the application range of the piezoelectric energy collector is greatly expanded, and the application range of the piezoelectric energy collector is particularly in the biomedical field.
Example two
Taking polylactic acid as a degradable film and a degradable substrate layer as an example to specifically describe the preparation method in the first embodiment, please refer to fig. 2 a-2 f, fig. 2 a-2 f are process charts of the preparation method of the degradable piezoelectric energy collector provided in the embodiment of the invention, the method comprises the following steps:
step 1: growing an array 202 of phenylalanine dipeptides perpendicular to the silicon wafer on the silicon wafer 201 by epitaxial growth, as shown in fig. 2 a;
step 2: applying an electric field parallel to the growth direction of the phenylalanine dipeptide array 202, the applied electric field having a strength of 8.5KV, as shown in fig. 2 b;
step 3: spin-coating a degradable solution on the silicon slice 201, so that the degradable solution completely covers the phenylalanine dipeptide array, and forming a degradable film 203 coating the phenylalanine dipeptide array after drying, as shown in fig. 2 c;
specifically, the spin coating speed is 2000rad/s, and the degradable solution preparation method is that polylactic acid is put into chloroform solution, and stirred for 30min by a magnetic stirrer, and the concentration of the degradable polylactic acid solution is 50mg/mL.
Step 4: slowly peeling the degradable film 203 coated with the phenylalanine dipeptide array 202 from the silicon substrate 201 to obtain a degradable piezoelectric layer, as shown in fig. 2 d;
the prepared degradable film can completely wrap the phenylalanine dipeptide array, so that the structure of the phenylalanine dipeptide array cannot be damaged in the peeling process.
Step 5: pouring the degradable polylactic acid solution into a container to form a film, obtaining a degradable substrate layer 204, and thermally evaporating a metal molybdenum layer 205 on the degradable substrate layer to obtain a degradable electrode, as shown in fig. 2 e;
step 6: the degradable piezoelectric layer is placed in the middle, the upper part and the lower part of the degradable piezoelectric layer are degradable electrodes plated with metal molybdenum, polylactic acid is used as an adhesive, and the upper degradable electrode and the lower degradable electrode are bonded with the degradable piezoelectric layer together to obtain the degradable piezoelectric energy collector, as shown in figure 2 f.
Example III
The embodiment provides a degradable piezoelectric energy collector, which is prepared by adopting the preparation method described in the embodiment, please refer to fig. 3, fig. 3 is a schematic structural diagram of the degradable piezoelectric energy collector provided in the embodiment of the invention. As shown, the degradable piezoelectric energy harvester includes: a first degradable electrode 301, a degradable piezoelectric layer 302 and a second degradable electrode 303 are arranged in sequence from bottom to top.
Wherein the first degradable electrode 301 and the second degradable electrode 303 each comprise a degradable substrate layer 30 and a metal layer 31 which are arranged in a stacked manner, and the metal layer 31 is positioned on one side close to the degradable piezoelectric layer 302. The degradable piezoelectric layer 302 includes a piezoelectric biomaterial array 3021 and a degradable film 3022 coating the piezoelectric biomaterial array 3021, the array 3021 of the piezoelectric biomaterial array having a single growth direction and polarization direction.
In this embodiment, the material of the piezoelectric biomaterial array 3021 is one or more of peptide, amino acid, and cellulose. The material of the degradable film 3022 and the degradable substrate layer 30 is one of polylactic acid, silk fibroin, polyglycolic acid, poly epsilon-caprolactone, or polyhydroxybutyrate.
It should be noted that the degradable substrate layer 30 also serves as an encapsulation layer of the degradable piezoelectric energy collector.
The degradable piezoelectric energy collector of the embodiment uses degradable and biocompatible materials as electrodes and packaging materials of the degradable piezoelectric energy collector, so that the piezoelectric energy collector has degradability and biocompatibility, and the application range of the piezoelectric energy collector is greatly expanded, and the application of the piezoelectric energy collector is particularly applied to the biomedical field.
Referring to fig. 4, fig. 4 is an electrical performance diagram of a degradable electric energy collector according to an embodiment of the present invention, wherein the degradable film 3022 and the degradable substrate layer 30 of the degradable electric energy collector are made of polylactic acid, wherein (a) is an open circuit voltage diagram generated by the degradable electric energy collector under the action of an external force, and (b) is a short circuit current diagram generated by the degradable electric energy collector under the action of an external force, and as can be seen from the diagrams, the open circuit voltage and the short circuit current generated by the degradable electric energy collector under the action of an external force are respectively 1.2V and 40nA.
Further, referring to fig. 5, fig. 5 is a degradation process image of a degradable piezoelectric energy collector according to an embodiment of the present invention. The degradable film 3022 and the degradable substrate layer 30 of the degradable electric energy collector are made of polylactic acid, and the degradable electric energy collector is completely soaked in the phosphate buffer solution and placed in a constant temperature oven at 37 ℃ to observe degradation characteristics, as shown in the figures, the degradable electric energy collector of the embodiment is basically completely degraded on the 180 th day as shown in the photographs of the 1 st day (fig. 5 (a)) and the 180 th day (fig. 5 (b)) of the degradable electric energy collector soaked in the phosphate buffer solution.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in an article or apparatus that comprises the element. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The orientation or positional relationship indicated by "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description and to simplify the description, and is not indicative or implying that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (5)
1. A method of making a degradable piezoelectric energy harvester comprising:
growing an array of piezoelectric biological materials on a substrate; comprising the following steps:
growing an array of biological materials on a substrate, the array of biological materials being perpendicular to the substrate;
applying an electric field parallel to the growth direction of the biological material array to realize a single polarization direction to obtain a piezoelectric biological material array;
the piezoelectric biological material array has a single growth direction and polarization direction, the material of the piezoelectric biological material array is one or more of peptide, amino acid and cellulose, and the substrate is a hard substrate;
preparing a degradable film on the substrate, so that the degradable film coats the piezoelectric biomaterial array;
peeling the degradable film coated with the piezoelectric biomaterial array from the substrate to obtain a degradable piezoelectric layer;
preparing two degradable electrodes, wherein the degradable electrodes comprise a degradable substrate layer and a metal layer which are arranged in a laminated manner;
placing the degradable piezoelectric layer between two degradable electrodes, and bonding to form a degradable piezoelectric energy collector, wherein the metal layer is positioned at one side close to the degradable piezoelectric layer, and a degradable solution is used as an adhesive to bond the degradable piezoelectric layer and the two degradable electrodes together to form a sandwich structure;
wherein the degradable film and the degradable substrate layer are made of one of polylactic acid, silk fibroin, polyglycolic acid, poly epsilon-caprolactone or polyhydroxybutyrate.
2. The method of claim 1, wherein the electric field strength is-10 KV.
3. The method of manufacturing a degradable piezoelectric energy harvester of claim 1 wherein manufacturing a degradable film on the substrate such that the degradable film encapsulates the array of piezoelectric biological materials comprises:
and spin-coating a degradable solution on the substrate on which the piezoelectric biomaterial array grows, so that the degradable solution completely covers the piezoelectric biomaterial array, and forming a degradable film coating the piezoelectric biomaterial array after drying.
4. The method of manufacturing a degradable piezoelectric energy harvester of claim 1 wherein the thickness of the degradable substrate layer is 0.2-0.4mm.
5. A degradable piezoelectric energy harvester prepared by the method of any one of claims 1-4, comprising: a first degradable electrode, a degradable piezoelectric layer and a second degradable electrode which are sequentially arranged from bottom to top,
the first degradable electrode and the second degradable electrode comprise a degradable substrate layer and a metal layer which are arranged in a stacked manner, and the metal layer is positioned on one side close to the degradable piezoelectric layer;
the degradable piezoelectric layer comprises a piezoelectric biological material array and a degradable film coating the piezoelectric biological material array, and the piezoelectric biological material array has a single growth direction and polarization direction;
the piezoelectric biological material array is made of one or more of peptide, amino acid and cellulose;
the degradable film and the degradable substrate layer are made of one of polylactic acid, silk fibroin, polyglycolic acid, poly epsilon-caprolactone or polyhydroxybutyrate.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015109720A1 (en) * | 2014-01-21 | 2015-07-30 | 西安交通大学 | Manufacturing method for energy harvester based on piezoelectric polymer microstructure array |
| CN107706301A (en) * | 2017-10-31 | 2018-02-16 | 深圳市柔纬联科技有限公司 | Degradable nano sequence arthrogryposis collection of energy device |
| WO2018170132A1 (en) * | 2017-03-14 | 2018-09-20 | University Of Connecticut | Biodegradable pressure sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140073201A (en) * | 2012-12-06 | 2014-06-16 | 한국전자통신연구원 | Piezoelectric Energy Harvesting Device and Method of Fabricating the Same |
| US11826495B2 (en) * | 2019-03-01 | 2023-11-28 | University Of Connecticut | Biodegradable piezoelectric ultrasonic transducer system |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015109720A1 (en) * | 2014-01-21 | 2015-07-30 | 西安交通大学 | Manufacturing method for energy harvester based on piezoelectric polymer microstructure array |
| WO2018170132A1 (en) * | 2017-03-14 | 2018-09-20 | University Of Connecticut | Biodegradable pressure sensor |
| CN107706301A (en) * | 2017-10-31 | 2018-02-16 | 深圳市柔纬联科技有限公司 | Degradable nano sequence arthrogryposis collection of energy device |
Non-Patent Citations (2)
| Title |
|---|
| Jun Li等."Degradable piezoelectric biomaterials for wearable and implantable bioelectronics".《Current Opinion in Solid State & Materials Science》.2020,第24卷1-16页. * |
| Kory Jenkinsa,等."Piezoelectric diphenylalanine peptide for greatly improved flexible nanogenerators".《Nano Energy》.2018,第51卷第321页第1栏第1行-第321页第2栏第22行、附图4. * |
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