CN114221573B - Cellulose-based nano friction generator with high output performance and preparation method thereof - Google Patents
Cellulose-based nano friction generator with high output performance and preparation method thereof Download PDFInfo
- Publication number
- CN114221573B CN114221573B CN202210025437.5A CN202210025437A CN114221573B CN 114221573 B CN114221573 B CN 114221573B CN 202210025437 A CN202210025437 A CN 202210025437A CN 114221573 B CN114221573 B CN 114221573B
- Authority
- CN
- China
- Prior art keywords
- cellulose
- friction
- bacterial cellulose
- electrode material
- hydroxyethyl cellulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 30
- 239000001913 cellulose Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229920002749 Bacterial cellulose Polymers 0.000 claims abstract description 68
- 239000005016 bacterial cellulose Substances 0.000 claims abstract description 68
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 55
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 55
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000007774 positive electrode material Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007772 electrode material Substances 0.000 claims abstract description 11
- 239000007773 negative electrode material Substances 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims description 23
- 239000002131 composite material Substances 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 239000008367 deionised water Substances 0.000 abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 abstract description 8
- 239000002783 friction material Substances 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 238000002464 physical blending Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 235000010980 cellulose Nutrition 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000000967 suction filtration Methods 0.000 description 7
- 239000002033 PVDF binder Substances 0.000 description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 6
- 239000010405 anode material Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000007385 chemical modification Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001132 ultrasonic dispersion Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention belongs to the field of materials, and particularly relates to a cellulose-based friction nano generator and a preparation method thereof. The invention provides a cellulose-based nano friction generator, which comprises a positive electrode material, a negative electrode material and an electrode material, wherein the components of the positive electrode material comprise bacterial cellulose and hydroxyethyl cellulose. The invention provides a cellulose-based positive electrode material for a friction nano generator for the first time, and also provides a method for improving the output performance of the friction nano generator by regulating and controlling the surface work function of the friction material by a simple physical blending method for the first time. The positive electrode film of the nano friction generator prepared by the invention is only dissolved by deionized water in the preparation process, and has good biocompatibility and degradability; the introduced hydroxyethyl cellulose can reduce the surface work function of the bacterial cellulose film, and can greatly improve the output performance of the prepared friction nano generator while maintaining the advantages of the bacterial cellulose.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a cellulose-based friction nano generator and a preparation method thereof.
Background
Friction nano-generators are devices that can convert tiny low frequency (< 5 Hz) mechanical energy, which is ubiquitous in life, into electrical energy, which has received extensive attention from the scientific community since it was first prepared in 2012. The friction nano generator can realize conversion from mechanical energy to electric energy based on two classical physical phenomena of friction electricity generation and electrostatic induction. Because different materials have different electron affinity, when the materials are in contact friction, a friction electricity generation phenomenon can be generated. Meanwhile, the larger the difference of the electron-withdrawing capability of the material, the more electrons are transferred in the contact and separation process of the material.
However, the existing friction nano-generator still faces many challenges, and how to improve the output performance thereof has been focused by researchers. At present, there is a lot of work in improving output performance: the surface contact area is increased by constructing a micro-nano structure on the surface of the friction material; the ability of the material to lose electrons is more differentiated through chemical modification; the conductive layer and the energy storage layer are introduced, so that charge loss in the friction process is reduced, and the like. However, these modification methods themselves have many problems to be solved. For example, specialized instruments or long-time solvent etching are required for constructing the micro-nano structure on the surface of the material; the chemical modification process is complex, and is not suitable for large-scale production; the introduction of the conductive layer and the energy storage layer easily causes delamination of the friction material, which is disadvantageous for long-term use. Therefore, in view of the problems of the existing modification methods, a simple and efficient method for improving the output performance needs to be provided.
In terms of material selection, considering that the friction nano generator may need to be used in a large scale, the friction nano generator cannot be recycled simply by manpower after failure, so that a naturally degradable friction material needs to be considered. Cellulose is a main component of plant cell walls, and is widely distributed in nature and widely available. Meanwhile, the cellulose has good biocompatibility, can be degraded in the nature, and has wide application range and application prospect. Bacterial cellulose is a general name for synthesizing cellulose under specific environments by various microorganisms such as acetic acid bacteria, has been industrially produced, has better guaranteed yield and performance, and has been used in the fields of medical materials and cosmetics.
Although bacterial cellulose has good mechanical properties and can be degraded in nature, the relatively high surface work function of the bacterial cellulose makes the bacterial cellulose difficult to lose electrons in the friction process as a friction positive electrode material, so that the bacterial cellulose needs to be modified to improve the electron losing capability of the bacterial cellulose.
In the prior art, no report on the application of a composite membrane prepared by compositing bacterial cellulose and hydroxyethyl cellulose to a friction nano-generator anode material exists.
Disclosure of Invention
Aiming at the existing problems of friction nano generators and bacterial cellulose, the invention provides a preparation method of a pure cellulose-based friction nano generator.
The technical scheme of the invention is as follows:
the first technical problem to be solved by the invention is to provide a cellulose-based nano friction generator, which comprises a positive electrode material, a negative electrode material and an electrode material, wherein the components of the positive electrode material comprise bacterial cellulose and hydroxyethyl cellulose.
Further, in the friction generator, the ratio of bacterial cellulose to hydroxyethyl cellulose is: 40-90 parts by weight of bacterial cellulose and 10-60 parts by weight of hydroxyethyl cellulose.
Further, the positive electrode material is a bacterial cellulose/hydroxyethyl cellulose composite film obtained by compounding bacterial cellulose and hydroxyethyl cellulose and then forming a film.
Further, the thickness of the bacterial cellulose/hydroxyethyl cellulose composite film is 0.015-0.060 mm; the finally obtained friction nano generator has good output performance and good mechanical property.
Further, the bacterial cellulose/hydroxyethyl cellulose composite membrane is prepared by the following method: uniformly stirring and mixing hydroxyethyl cellulose, bacterial cellulose and water to obtain a mixture aqueous solution; the obtained mixture aqueous solution is formed into a film to obtain the bacterial cellulose/hydroxyethyl cellulose composite film.
Further, the preparation method of the bacterial cellulose/hydroxyethyl cellulose composite membrane comprises the following steps: firstly, uniformly stirring and mixing an aqueous solution of hydroxyethyl cellulose and an aqueous solution of bacterial cellulose to obtain a mixture aqueous solution; filtering the mixture water solution to prepare a composite membrane; finally, drying to obtain the bacterial cellulose/hydroxyethyl cellulose composite membrane.
Further, the mass concentration of the hydroxyethyl cellulose aqueous solution is 0.5g/L to 3.0g/L.
Further, the mass concentration of the bacterial cellulose aqueous solution is 0.57g/L to 1.29g/L.
Further, the aqueous solution of hydroxyethyl cellulose and the aqueous solution of bacterial cellulose are uniformly mixed by ultrasonic agitation.
In the friction generator, the anode material and the electrode material are selected from the anode material and the electrode material of the existing friction generator, for example, the anode material can be a polyvinylidene fluoride film, and the electrode material can be a copper adhesive tape.
The second technical problem to be solved by the invention is to provide a preparation method of the cellulose-based nano friction generator, which comprises the following steps: the positive electrode material and the negative electrode material are respectively connected with the electrode material to obtain a friction positive electrode film and a friction negative electrode film; then the front surfaces of the friction positive electrode film and the friction negative electrode film are oppositely stuck; finally, the packaging is carried out by using an insulating material.
The third technical problem to be solved by the invention is to provide a method for improving the work function of the surface of bacterial cellulose, which comprises the following steps: hydroxyethyl cellulose is added to the bacterial cellulose.
Further, in the method for improving the surface work function of the bacterial cellulose, the ratio of the bacterial cellulose to the hydroxyethyl cellulose is as follows: 40-90 parts by weight of bacterial cellulose and 10-60 parts by weight of hydroxyethyl cellulose.
In the invention, the surface work function is a physical quantity for measuring the difficulty of electrons at the fermi level on the surface of the solid to escape from the solid, when the surface work function is larger, the surface of the solid can show the attraction capability to electrons, and when the surface work function is smaller, the electrons on the surface of the solid are more easily separated;
the invention has the beneficial effects that:
the invention provides a cellulose-based positive electrode material for a friction nano generator for the first time, and also provides a method for improving the output performance of the friction nano generator by regulating and controlling the surface work function of the friction material by a simple physical blending method for the first time. The positive electrode film of the nano friction generator prepared by the invention is only dissolved by deionized water in the preparation process, and has good biocompatibility and degradability; the introduced hydroxyethyl cellulose can reduce the surface work function of the bacterial cellulose film, and can greatly improve the output performance of the prepared friction nano generator while maintaining the advantages of the bacterial cellulose.
In addition, the preparation method of the pure cellulose-based friction nano generator is simple, the preparation process is environment-friendly and pollution-free, and as the friction positive electrode film layer is prepared by dissolving only deionized water, no other organic solvent is added in the whole process; therefore, the biocompatibility and the degradability of the bacterial cellulose are reserved to a great extent, the degradability of the composite membrane is also very good, the composite membrane can be widely used in the nature, the environment cannot be polluted, and the composite membrane has the potential of being applied to the surface of a human body and even in vivo and has extremely high application value.
Description of the drawings:
fig. 1 is a schematic diagram of the preparation process of cellulose-based friction nano-generators of examples 1 to 4 and comparative examples 1 to 2 of the present invention.
Fig. 2 is a graph showing the change in work function of the cellulose-based positive electrode materials obtained in examples 1 to 4 and comparative examples 1 to 2 of the present invention.
Fig. 3a, 3b, 3c and 3d are graphs showing the short-circuit current output performance of the cellulose-based friction nano-generators according to examples 1 to 4 and comparative examples 1 to 2, the open-circuit voltage output performance, the output performance of the transferred charge amount per friction process, and the output power of example 4 under different external resistances, respectively.
Fig. 4 is a graph showing tensile mechanical properties of the cellulose-based positive electrode materials obtained in examples 1 to 4 and comparative examples 1 to 2 according to the present invention.
Detailed Description
According to the invention, the hydroxyethyl cellulose (HEC) is introduced into the Bacterial Cellulose (BC) for the first time, and the surface work function of the bacterial cellulose can be obviously reduced by adding the hydroxyethyl cellulose, so that the output performance of the friction nano generator prepared by the composite membrane obtained by suction filtration is obviously improved.
The following describes the invention in further detail with reference to examples, which are not intended to limit the invention thereto.
Examples 1 to 4:
1) weighing the bacterial cellulose dispersion (the bacterial cellulose dispersion is purchased in Qijing technology, the actual bacterial cellulose content in the bacterial cellulose dispersion is 0.55%, the dispersing agent is water) 16.36g (example 1), 14.55g (example 2), 10.91g (example 3), 7.27g (example 4) in a beaker, and adding 70ml deionized water respectively;
2) 10mg (example 1), 20mg (example 2), 40mg (example 3), 60mg (example 4) of hydroxyethylcellulose powder were weighed into a beaker, and after adding 20ml of deionized water for dissolution, the dissolution process was performed in a 50 ℃ water bath;
3) Respectively adding the hydroxyethyl cellulose aqueous solution obtained in the step 2) into the bacterial cellulose aqueous solution obtained in the step 1) according to the mass ratio, stirring for 10min by using a magnetic stirrer on a stirring table, and then performing ultrasonic dispersion in an ultrasonic cleaner for 20min; the mass ratio of the actual bacterial cellulose to the hydroxyethyl cellulose powder in the bacterial cellulose dispersion liquid is respectively as follows: 90:10 (example 1, labeled BH 10), 80:20 (example 2, labeled BH 20), 60:40 (example 3, labeled BH 40), 40:60 (example 4, noted BH 60), which corresponds to the mass of bacterial cellulose dispersion and cellulose powder, respectively: 16.36g and 10mg (example 1), 14.55g and 20mg (example 2), 10.91g and 40mg (example 3), 7.27g and 60mg (example 4); ensuring that the total mass of the actual bacterial cellulose and hydroxyethyl cellulose in the aqueous solutions of each set of mixtures is 100mg;
4) Carrying out suction filtration on the mixture water solution obtained in the step (3), and carrying out vacuum suction filtration by adopting a PVDF filter membrane with the diameter of 5cm and the aperture of 0.22 mu m; carrying out suction filtration for each time by dividing 30ml of the mixed solution, namely 90ml of the mixed aqueous solution into 3 times;
5) Drying the suction filtration film obtained in the step (4) at the room temperature of 25 ℃;
6) Cutting the dried film obtained in the step (5) into square with the length of 2cm and the length of 2cm, and directly attaching the square to a copper adhesive tape to prepare a friction positive electrode film;
7) The other electrode material is a polyvinylidene fluoride film, and is also cut into square with the length of 2cm and the length of 2cm, and is directly stuck on a copper adhesive tape to prepare a friction negative electrode film;
8) And (3) oppositely sticking the front sides of the friction positive electrode film and the friction negative electrode film, wherein the distance between the front sides is 2cm, packaging the outer layers by using polyimide films, and preparing the mixed cellulose friction nano generator.
Comparative example 1
1) 18.18g of a bacterial cellulose dispersion (the bacterial cellulose dispersion is purchased in Qihong technology, the actual bacterial cellulose content in the bacterial cellulose dispersion is 0.55%, and the dispersing agent is water) is weighed in a beaker, and 90ml of deionized water is added; then stirring for 10min on a stirring table by using a magnetic stirrer, and then performing ultrasonic dispersion in an ultrasonic cleaner for 20min;
2) Taking 30ml of the bacterial cellulose aqueous solution in the step (1) for vacuum suction filtration, namely dividing 90ml of the mixture aqueous solution into 3 times for suction filtration, and selecting a PVDF filter membrane with the diameter of 5cm and the aperture of 0.22 mu m;
3) Drying the extraction filter membrane obtained in the step (2) at the room temperature of 25 ℃;
4) Cutting the dried extraction filter membrane obtained in the step (3) into squares with the size of 2cm x 2cm, and then directly attaching the squares to a copper adhesive tape to prepare a friction positive electrode membrane, namely BH0;
5) The other electrode material is a polyvinylidene fluoride film, and is also cut into square with the length of 2cm and the length of 2cm, and is directly stuck on a copper adhesive tape to prepare a friction negative electrode film;
6) And (3) oppositely sticking the friction positive electrode film obtained in the step (4) and the friction negative electrode film obtained in the step (5), wherein the distance between the friction positive electrode film and the friction negative electrode film is 2cm, and packaging the outer layer by using a polyimide film, so that the preparation of the pure bacterial cellulose friction nano generator is completed.
Comparative example 2
1) Weighing 100mg of hydroxyethyl cellulose powder, adding the powder into a beaker, adding 18ml of deionized water for dissolution, and performing the dissolution process in a water bath kettle at 50 ℃;
2) Pouring the hydroxyethyl cellulose aqueous solution obtained in the step (1) into a surface dish for pouring and film forming;
3) Placing the surface dish in the step (2) into a high-temperature oven at 60 ℃ for drying;
4) Cutting the pure hydroxyethyl cellulose film dried in the step (3) into square with the length of 2cm and the length of 2cm, directly attaching the square to a copper adhesive tape, preparing a friction positive electrode film, and marking the friction positive electrode film as HEC;
5) The other electrode material is a polyvinylidene fluoride film, and is also cut into square with the length of 2cm and the length of 2cm, and is directly stuck on a copper adhesive tape to prepare a friction negative electrode film;
6) And (3) oppositely sticking the front sides of the friction positive electrode film obtained in the step (4) and the friction negative electrode film obtained in the step (5), wherein the distance between the front sides is 2cm, and packaging the outer layers by using a polyimide film, so that the preparation of the pure hydroxyethyl cellulose friction nano generator is completed.
The preparation process of the cellulose-based friction positive electrode films of examples 1 to 4 and comparative examples 1 to 2 is shown in fig. 1, and it can be seen that the solvent used in the whole preparation process is only deionized water without introducing other organic solvents, and no environmental pollution is generated in the preparation process.
FIG. 2 shows the results of the surface work functions of the cellulose-based friction positive electrode films of examples 1 to 4 and comparative examples 1 to 2 having different amounts of hydroxyethyl cellulose, and it is apparent from FIG. 2 that the surface work functions of the films gradually decrease as the amount of hydroxyethyl cellulose added increases; therefore, when the composite film is used as a positive electrode material, the transfer of charges in the friction process is facilitated due to the decrease of the surface work function.
Fig. 3 shows the output performance results of the friction nano-generators prepared by using the cellulose-based friction positive electrode films of examples 1 to 4 and comparative examples 1 to 2 with different hydroxyethyl cellulose contents, and it can be seen from fig. 3 that the output performance of the nano-friction generator increases with the increase of the hydroxyethyl cellulose content, and reaches the maximum when 60% hydroxyethyl cellulose is added.
FIG. 4 is a graph showing the mechanical properties of the cellulose-based friction positive electrode films of examples 1-4 and comparative examples 1-2 with different hydroxyethylcellulose content; as can be seen from fig. 4, the tensile properties of the system show a tendency to gradually decrease as the content of HEC in the film increases.
In addition, in the experiment, the friction positive electrode film is prepared by respectively introducing carboxymethyl cellulose and hydroxypropyl methyl cellulose into bacterial cellulose; however, it was found that the addition of these celluloses did not lower the work function of the surface thereof, and thus the output performance of the friction generator produced when it was used as a positive electrode material was not good.
The foregoing is merely a specific implementation method of the present invention, but the scope of the present invention is not limited thereto, and any equivalent modifications and substitutions made by those skilled in the relevant art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (7)
1. A cellulose-based nano friction generator comprising a positive electrode material, a negative electrode material and an electrode material, wherein the components of the positive electrode material comprise bacterial cellulose and hydroxyethyl cellulose; the positive electrode material is a bacterial cellulose/hydroxyethyl cellulose composite film, and the bacterial cellulose/hydroxyethyl cellulose composite film is prepared by the following method: uniformly stirring and mixing hydroxyethyl cellulose, bacterial cellulose and water to obtain a mixture aqueous solution; the obtained mixture aqueous solution is formed into a film to obtain a bacterial cellulose/hydroxyethyl cellulose composite film; the ratio of bacterial cellulose to hydroxyethyl cellulose is: 40-90 parts of bacterial cellulose and 10-60 parts of hydroxyethyl cellulose.
2. The cellulose-based nano-friction generator according to claim 1, wherein the bacterial cellulose/hydroxyethyl cellulose composite membrane has a thickness of 0.015-0.060 mm.
3. The cellulose-based nano-friction generator according to claim 1, wherein the preparation method of the bacterial cellulose/hydroxyethyl cellulose composite membrane comprises the following steps: firstly, uniformly stirring and mixing an aqueous solution of hydroxyethyl cellulose and an aqueous solution of bacterial cellulose to obtain a mixture aqueous solution; filtering the mixture water solution to prepare a composite membrane; finally, drying to obtain the bacterial cellulose/hydroxyethyl cellulose composite membrane.
4. A cellulose-based nano-friction generator according to claim 3, wherein the mass concentration of the aqueous solution of hydroxyethyl cellulose is 0.5g/L to 3.0g/L.
5. The cellulose-based nano-friction generator as set forth in claim 4, wherein the mass concentration of the bacterial cellulose aqueous solution is 0.57g/L to 1.29g/L.
6. A method of manufacturing the cellulose-based nano-friction generator of any one of claims 1 to 5, the method comprising: the positive electrode material and the negative electrode material are respectively connected with the electrode material to obtain a friction positive electrode film and a friction negative electrode film; then the front surfaces of the friction positive electrode film and the friction negative electrode film are oppositely stuck; finally, the packaging is carried out by using an insulating material.
7. A method for increasing the work function of a bacterial cellulose surface, the method comprising: adding hydroxyethyl cellulose into bacterial cellulose; the ratio of bacterial cellulose to hydroxyethyl cellulose is: 40-90 parts of bacterial cellulose and 10-60 parts of hydroxyethyl cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210025437.5A CN114221573B (en) | 2022-01-11 | 2022-01-11 | Cellulose-based nano friction generator with high output performance and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210025437.5A CN114221573B (en) | 2022-01-11 | 2022-01-11 | Cellulose-based nano friction generator with high output performance and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114221573A CN114221573A (en) | 2022-03-22 |
| CN114221573B true CN114221573B (en) | 2024-01-30 |
Family
ID=80708003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210025437.5A Active CN114221573B (en) | 2022-01-11 | 2022-01-11 | Cellulose-based nano friction generator with high output performance and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114221573B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201280A (en) * | 2014-08-04 | 2014-12-10 | 北京科技大学 | Preparation methods of nanometer piezoelectric film and nanometer composite piezoelectric generator |
| CN104356620A (en) * | 2014-11-19 | 2015-02-18 | 国网河南省电力公司濮阳供电公司 | Degradable electric-insulation material |
| CN105316373A (en) * | 2014-08-03 | 2016-02-10 | 浙江理工大学 | Method of utilizing bacterial fermentation to prepare bacterial cellulose with three-dimensional grid structure |
| CN110128695A (en) * | 2019-05-07 | 2019-08-16 | 武汉大学 | A kind of conduction composite sponge and conductive composite sponge sensor and its application |
| CN111174945A (en) * | 2018-11-12 | 2020-05-19 | 北京纳米能源与系统研究所 | Pressure sensor based on friction nano generator |
| CN111355401A (en) * | 2020-02-28 | 2020-06-30 | 广西大学 | Oxygen-enriched group modified cellulose nanofibril-based friction nano-generator |
| CN113054866A (en) * | 2021-04-09 | 2021-06-29 | 华南理工大学 | Application of modified lignin nanocellulose film in friction nanogenerator |
| CN113794396A (en) * | 2021-07-20 | 2021-12-14 | 浙江大学 | Friction nanometer generator with slit effect for efficiently collecting wind energy |
-
2022
- 2022-01-11 CN CN202210025437.5A patent/CN114221573B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105316373A (en) * | 2014-08-03 | 2016-02-10 | 浙江理工大学 | Method of utilizing bacterial fermentation to prepare bacterial cellulose with three-dimensional grid structure |
| CN104201280A (en) * | 2014-08-04 | 2014-12-10 | 北京科技大学 | Preparation methods of nanometer piezoelectric film and nanometer composite piezoelectric generator |
| CN104356620A (en) * | 2014-11-19 | 2015-02-18 | 国网河南省电力公司濮阳供电公司 | Degradable electric-insulation material |
| CN111174945A (en) * | 2018-11-12 | 2020-05-19 | 北京纳米能源与系统研究所 | Pressure sensor based on friction nano generator |
| CN110128695A (en) * | 2019-05-07 | 2019-08-16 | 武汉大学 | A kind of conduction composite sponge and conductive composite sponge sensor and its application |
| CN111355401A (en) * | 2020-02-28 | 2020-06-30 | 广西大学 | Oxygen-enriched group modified cellulose nanofibril-based friction nano-generator |
| CN113054866A (en) * | 2021-04-09 | 2021-06-29 | 华南理工大学 | Application of modified lignin nanocellulose film in friction nanogenerator |
| CN113794396A (en) * | 2021-07-20 | 2021-12-14 | 浙江大学 | Friction nanometer generator with slit effect for efficiently collecting wind energy |
Non-Patent Citations (2)
| Title |
|---|
| Hua Yu等."Bacterial cellulose nanofiber triboelectric nanogenerator based on dielectric particles hybridized system".《Composites Part A》.2021,第151卷论文第2-3. * |
| Jieyu Huang等."Biomass-based wearable and Self-powered pressure sensor for human motion detection".《Composites Part A》.2021,第146卷论文第2-7页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114221573A (en) | 2022-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kirubasankar et al. | In situ grown nickel selenide on graphene nanohybrid electrodes for high energy density asymmetric supercapacitors | |
| Zeng et al. | Metal–organic-framework-derived ZnO@ C@ NiCo 2 O 4 core–shell structures as an advanced electrode for high-performance supercapacitors | |
| CN100492721C (en) | Lithium ion battery pole piece with high multiplying power and production thereof | |
| CN102024996B (en) | High-performance rechargeable magnesium battery and manufacturing method thereof | |
| JP5667309B2 (en) | Electrode plate and method for preparing the same, super capacitor and lithium ion battery | |
| WO2012055095A1 (en) | Composite electrode material, manufacturing method and application thereof | |
| Huang et al. | Ni 3 S 4 supported on carbon cloth for high-performance flexible all-solid-state asymmetric supercapacitors | |
| Jiang et al. | In situ growth of (NH 4) 2 V 10 O 25· 8H 2 O urchin-like hierarchical arrays as superior electrodes for all-solid-state supercapacitors | |
| CN103466603A (en) | Preparation method of graphene dispersion liquid, and preparation method of graphene film | |
| CN103113625B (en) | Cyano-containing cellulose derivative and graphene composite material and preparation method thereof | |
| CN110136986A (en) | MnO2/ MXene/CC flexible composite electrode material and preparation method thereof | |
| Li et al. | Polypyrrole-coated hierarchical porous composites nanoarchitectures for advanced solid-state flexible hybrid devices | |
| CN111403184A (en) | Nano carbon doped MnO2Preparation method of heterojunction flexible electrode | |
| CN111302402A (en) | Hydroxyl ferric oxide/two-dimensional carbide crystal MXene negative electrode material and preparation method and application thereof | |
| KR20120032286A (en) | Supercatpacitor electrode based on mno2/cnt/papers and the synthesis of the electrode | |
| CN112701268B (en) | Flexible integrated carbon-coated tungsten oxide/carbon nanotube film composite electrode and preparation method thereof | |
| CN111333119A (en) | Two-dimensional carbide crystal MXene-based iron oxide negative electrode material and preparation method and application thereof | |
| CN106450245A (en) | Flexible cathode material of chargeable/dischargeable lithium-sulfur battery and preparation method thereof | |
| CN104362885B (en) | A kind of can the electric capacity type electric power generator that improve energy conversion efficiency and preparation method thereof | |
| CN110444752A (en) | Extended-life lithium ion battery tertiary cathode material and its preparation method and application | |
| CN107611410A (en) | V2o5/ graphene composite materials preparation method and anode | |
| CN110752348A (en) | Method for preparing self-supporting flexible electrode by solvent-nonsolvent method and self-supporting flexible electrode | |
| CN109786725A (en) | Independent self-supporting positive electrode and preparation method thereof and aluminium ion battery and preparation method thereof | |
| CN114221573B (en) | Cellulose-based nano friction generator with high output performance and preparation method thereof | |
| Yu et al. | A cobalt-based metal–organic framework electrodeposited on nickel foam as a binder-free electrode for high-performance supercapacitors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |