CN110504111A - A kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure - Google Patents

A kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure Download PDF

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CN110504111A
CN110504111A CN201910838104.2A CN201910838104A CN110504111A CN 110504111 A CN110504111 A CN 110504111A CN 201910838104 A CN201910838104 A CN 201910838104A CN 110504111 A CN110504111 A CN 110504111A
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paper base
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energy storing
electrode
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姜雪宁
刘冈
罗豪
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Dalian University of Technology
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/26Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/46Metal oxides
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/48Conductive polymers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/54Electrolytes
    • H01G11/56Solid electrolytes, e.g. gels; Additives therein
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

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Abstract

A kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure, belongs to energy storage material and technical field.Preparation step is as follows: preparing papery three-dimensional conductive substrate first, then laser engraving is carried out on conductive substrate, obtains three-dimensional structure electrod-array, finally carries out electrolyte double-coated and infiltration, by drying, the paper base flexible capacitor with three-dimensional energy storing structure is obtained.This method is by carrying out laser engraving to electrode material papery three-dimensional conductive substrate, it can simply, efficiently realize the preparation of different configuration paper base capacitor, preparation process is simple, at low cost, simultaneously because the capacitor of this method preparation has three-dimensional energy storing structure, device has good energy storage characteristic and flexibility.

Description

A kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure
Technical field
The paper base capacitor laser engraving preparation method with three-dimensional energy storing structure that the present invention relates to a kind of, belongs to energy storage material Material and technical field.
Background technique
Capacitor is also referred to as electrochemical capacitor, is a kind of novel energy storage device.The power density and energy of capacitor Density is between traditional capacitor and battery, and relative to battery and fuel cell, capacitor has high power density, quickly fills The advantage of electric discharge and long circulation life;Relative to traditional capacitor, capacitor has the advantage of high-energy density.Wherein, paper base Capacitor is due to its unique high-flexibility and Miniaturized advantage, it is considered to be wearable and portable electronic device novel Energy storage device.
The micromation paper base capacitor explored effective way and research and develop new technology preparation high quality is the weight in the current field Want developing direction.Zhaoyang Liu et al. (Advanced Materials 2016,28,2217) has prepared graphite first Then the combination electrode slurry that alkene and electro-chemical activity organic polymer PH1000 are constituted assists spraying printing, In by template Interdigitation planar capacitor is prepared in paper substrates;This method is conducive to prepare the series and parallel structure of capacitor, but needs spy Different lithographic equipment carries out electrode template preparation, and complex process is at high cost;And the capacitor obtained has planar structure, storage Charge active area is small, cause the energy-storage property of capacitor it is not high (under the sweep speed of 1mV/s area specific capacitance be 5.4mF/ cm2).Zhang Haixia et al. discloses a kind of free style button capacitor based on laser graphics and manufacturing method (patent application Number 201610953666.8), preparation step specifically includes that (1) prepares PVDF Nanowire by electrostatic spinning on back electrode Dimension;(2) carbon nanotube neopelex solution is added dropwise on PVDF nanofiber and is used as flexible electrode;It (3) will be electric Pole is transferred to PVA-H3On PO4 solid electrolyte;(4) Au electrode layer is sputtered on electrolyte-flexible electrode, as capacitor collection Fluid;(5) by laser graphics mode, metal collector layer, flexible electrode layer are cut into interdigitated electrode structure, and it is following Solid-state electrolyte layer remain unchanged, obtain free style button capacitor.This method preparation capacitor have high-flexibility and It is Miniaturized, but equally there is the deficiencies of preparation step is complicated, at high cost.Wenli Zhang et al. (Adv. Energy Mater. 2018,1801840) use laser etching method by lignin conversion for graphene, it then will be without laser spoke According to lignin carry out water dissolution and remove, to obtain the interdigital electrode with three-dimensional grapheme structure, and further coating electricity Xie Zhi obtains micromation capacitor.The preparation of Different electrodes pattern can be carried out on multiple polymers substrate using this method, But lignin is influenced to the carbonisation of graphene by many factors such as laser power density and irradiation time, is not allowed The grapheme material for easily obtaining high quality, on interdigital electrode surface, vapor deposition golden film can be improved the electric conductivity and capacitor of electrode Energy storage characteristic, but process complications and cost is caused to improve;In addition, using polymethyl methacrylate in this method (PMMA), the polymer matrix films such as poly terephthalic acid class plastics (PET) are as capacitor supporter, increase device volume and Without flexibility.
Summary of the invention
In order to overcome problems of the prior art, the present invention provides a kind of paper base capacitor with three-dimensional energy storing structure Device laser engraving preparation method, this method by carrying out laser engraving to electrode material papery three-dimensional conductive substrate, can it is easy, Efficiently realize the preparation of different configuration paper base capacitor, preparation process is simple, at low cost, simultaneously because the electricity of this method preparation Container has three-dimensional energy storing structure, and the energy storage characteristic of device is optimized.
The technical solution adopted by the present invention is that: a kind of paper base capacitor laser engraving preparation side with three-dimensional energy storing structure Method, specific preparation process is as follows:
Step 1: the preparation of papery three-dimensional conductive substrate
Electrode material slurry is prepared, using double-face vacuum suction filtration or dipping method, electrode material slurry is made to penetrate into porous flexible paper Matter base internal is attached to surface simultaneously, is then dried in 25-100 DEG C of vacuum drying oven 5-30 hours, forms papery Three-dimensional conductive substrate;
Step 2: prepared by the laser engraving of three-dimensional electrode arrays configuration
Using the three-dimensional electrode arrays configuration of computer software design, laser pattern engraving is carried out on papery conductive substrate, During laser scanning, laser power is 1-30 watts, laser scan rate 100-10000 mm/second, and in paper substrates Upper dropwise addition deionized water or distilled water are to reduce temperature;Iterative cycles scanning is carried out, until in laser-scanning position papery matrix Electrode material be carbonized or aoxidize removing, and paper substrates are retained, to obtain three-dimensional electrode arrays configuration;
Step 3: the dual coating of electrolyte and the formation of three-dimensional structure capacitor
Hydrogel electrolyte is prepared, then applies hydrogel electrolyte in the three-dimensional electrode arrays configuration tow sides prepared, Promote infiltration of the hydrogel electrolyte in paper substrates, is finally dried 5-30 hour at 25-50 DEG C in air, acquisition Paper base capacitor with three-dimensional energy storing structure.
The three-dimensional electrode arrays configuration includes interdigital electrode configuration and other shaped electrode structures, wherein special-shaped battery Pole structure including but not limited to S type, L-type, A type, H-type configuration electrode structure, and due to electrode material permeate in entire papery Base internal, so that electrode has three-dimensional conductive characteristic.
The paper base capacitor with three-dimensional energy storing structure includes the single paper base capacitor with three-dimensional energy storing structure, It also include cascaded structure, parallel-connection structure and the serial-parallel knot being made of multiple paper base capacitors with three-dimensional energy storing structure Structure.
The composition of the electrode material are as follows: the carbon materials powder and transition metal oxide powder that mass content is 40-95% The combination electrode material powder that body or conducting polymer materials powder are constituted;Wherein, the carbon materials powder is graphene, carbon The mixed powder of one or more of nanometer rods, carbon nanotube and activated carbon, transition metal oxide powder are vanadium oxide, oxygen Change cobalt, manganese oxide, nickel oxide or ferric oxide powder, conducting polymer materials powder is polyaniline, polypyrrole or polythiophene powder.
The preparation steps of the electrode material slurry are as follows: disperse combination electrode material powder in solvent, be placed in ice bath Middle sonic oscillation 30-90 minutes, then dispersion liquid is placed in and stands 5-24 hours at room temperature, finally extracts uniform and stable supernatant Liquid is as electrode material slurry;Wherein, solvent is dimethylformamide, ethyl alcohol, dimethyl sulfoxide, N-Methyl pyrrolidone, goes The mixed solvent of one or more of ionized water, isopropanol.
The composition of the hydrogel electrolyte are as follows: deionized water includes carboxymethyl cellulose, polyvinyl alcohol or polyoxyethylene The high-molecular organic material of alkene and the inorganic matter comprising phosphoric acid, sulfuric acid, sodium sulphate, potassium hydroxide, lithium sulfate or lithium perchlorate, institute State deionized water: high-molecular organic material: the mass ratio of inorganic matter is 8-16:1-3:1;By the mixture matched above in 60- Magnetic agitation is carried out in 100 DEG C of water-baths, until solution becomes clear, obtains hydrogel electrolyte.
The beneficial effects of the present invention are:
1. in the preparation process of the paper base capacitor with three-dimensional energy storing structure described in, electrode material papery conductive substrate is adopted It can be realized, do not need using common commercialization laser with vacuum filtration or dipping method preparation, the engraving of electrod-array Instrument and equipment costly;In addition, prepared electrode conductivuty containing carbon materials is good, do not need additionally to prepare metal afflux Body, entire device preparation technology is simple, low in cost;
2. in the paper base capacitor with three-dimensional energy storing structure described in, electrode material, which is impregnated with, to be distributed in entire paper substrates Portion and surface, laser engraving runs through entire paper substrates, while realizing electrolyte in substrate by the coating of face electrolyte anyway It is fully penetrated, therefore the capacitor prepared has three-dimensional energy storing structure, for common two-dimentional paper base capacitor, storage Energy characteristic is optimized and is improved;
3. micromation and the special-shaped preparation of capacitor and its preparation of series and parallel structure, energy can be conveniently realized using this method Enough meet portable, wearable electronic application demand.
Detailed description of the invention
Fig. 1 is the interdigitation Graphene electrodes three-dimensional energy storing structure paper base capacitor for preparing in embodiment one in different electric currents Constant current charge-discharge curve under density, current density are respectively 0.3mA/cm2And 0.5mA/cm2
Fig. 2 be the interdigitation Graphene electrodes three-dimensional energy storing structure paper base capacitor that is prepared in embodiment one 0.5 mA/ cm2Under current density in closed loop folding process area specific capacitance with folding times variation diagram.
Specific embodiment
With reference to the accompanying drawing, it is described further by specific embodiment.
Embodiment one
The preparation of interdigitation Graphene electrodes three-dimensional energy storing structure paper base capacitor is carried out, it is poly- using Graphene electrodes material, sulfuric acid- Polyvinyl alcohol hydrogel electrolyte and use for laboratory qualitative filter paper are as substrate.
One, the vacuum filtration preparation of graphene papery three-dimensional conductive substrate:
The preparation of Graphene electrodes slurry: weighing 0.1g graphene powder, is scattered in 500ml solvent dimethylformamide, sets Sonic oscillation 30-60 minutes in ice bath, then solution is put in and stands 24 hours at room temperature, is finally extracted uniform and stable Supernatant is as Graphene electrodes slurry.
Electrode slurry vacuum filtration: using use for laboratory qualitative filter paper as substrate, by ready Graphene electrodes slurry into Row vacuum filtration, to realize that electrode material is fully penetrated in paper substrates, carrying out filter paper, face is filtered anyway, until filter paper is anyway Face blackening and filtrate become clarification.
The drying process of conductive substrate: two-sided filtered substrate is 5 hours dry in 80 DEG C of vacuum drying ovens, obtain graphite Alkene papery three-dimensional conductive substrate.
Two, the laser engraving preparation of interdigitation graphene three-dimensional electrode arrays
Interdigitated electrodes array configuration is designed using computer software AutoCAD, controls CO using computer2It is prepared by laser engraving machine Pattern engraving is carried out on good graphene papery conductive substrate, the laser power used is 3W, 5000 milli of laser scan rate Meter per second;During laser scanning, deionized water, which is added dropwise, in paper substrates reduces temperature;It is repeatedly scanned with, until laser The intracorporal graphene of scan position base is completely removed, and paper substrates are retained, and finally obtains designed graphene fork Refer to electrod-array.Refer to electrode including 5 finger electrodes on every set comb electrode in prepared graphene interdigital electrode array structure Length 10mm, width 1.0mm, electrode gap 0.5mm.
Three, sulfuric acid-polyvinyl alcohol hydrogel electrolyte dual coating preparation has the paper base capacitor of three-dimensional energy storing structure
The preparation of sulfuric acid-polyvinyl alcohol hydrogel electrolyte: concentrated sulfuric acid 0.3g is weighed, polyvinyl alcohol 0.3g is put in 3ml deionization In water, magnetic agitation is carried out in 85 DEG C of water-baths, until solution becomes clear, obtains sulfuric acid-polyvinyl alcohol hydrogel electricity Xie Zhi;
Hydrogel electrolyte double-coated: a small amount of prepared sulfuric acid-polyvinyl alcohol hydrogel electrolyte is dipped with glass bar, The even surface coated in good Graphene electrodes array configuration made above, after being dried at room temperature for 1 hour, according still further to same Operation carries out electrolyte coating in electrode reverse side;Finally capacitor is placed in 35 DEG C of drying boxes and is dried 24 hours, is obtained Interdigitation Graphene electrodes paper base three-dimensional capacitor.The paper base three-dimensional capacitor area prepared in the present embodiment is 1.5cm2, it is thick Degree is 0.2mm, volume 0.3cm3, have the characteristics that light weight, small in size.
Four, the performance characterization of the paper base capacitor of interdigitation Graphene electrodes three-dimensional energy storing structure
Fig. 1 is the interdigitation Graphene electrodes three-dimensional energy storing structure paper base capacitor for preparing in 0.3mA/cm2And 0.5mA/cm2Electricity Constant current charge-discharge curve under current density, the symmetrical triangle shape of curve illustrate that capacitor manufactured in the present embodiment has very Good electric double layer energy storage characteristic and charge and discharge invertibity;The capacitor prepared in the present embodiment is calculated by the curve to exist 0.3mA/cm2And 0.5mA/cm2Specific area capacitor under current density is 8.20mF/cm2And 7.81mF/cm2, illustrate that device has There is good energy storage characteristic.
Fig. 2 is the interdigitation Graphene electrodes three-dimensional energy storing structure paper base capacitor for preparing in 0.5 mA/cm2Current density In lower closed loop folding process area specific capacitance with folding times variation, the results showed that capacitor is protected after 1000 closed loops fold Holdup is still up to 90%, it was demonstrated that using the height of paper base capacitor flexibility prepared by this method, can satisfy flexible electronic device Application requirement.
Embodiment two
The preparation of L-type three-dimensional energy storing structure paper base capacitor is carried out using the method for the invention, wherein use carbon nanotube-two Manganese oxide composite electrodes material, sodium sulphate-carboxymethyl cellulose hydrogel electrolyte and use for laboratory lens wiping paper are papery base Bottom.It is described that specific preparation process is as follows.
One, prepared by carbon nanotube-manganese dioxide papery three-dimensional conductive substrate dipping:
1. prepared by carbon nanotube-manganese dioxide composite electrode material hydro-thermal method:
It is dissolved in 60mL deionized water firstly, measuring the 0.5mL concentrated sulfuric acid, adds 0.2g carbon nanotube, ultrasound is carried out to solution Processing 3 hours;Then 0.6g potassium permanganate is added into solution, magnetic agitation 3h is carried out to solution at room temperature;It then will be molten Liquid is fitted into autoclave, is reacted 6 hours at 150 DEG C, is after the reaction was completed taken out solution, and it is small to stand cooling 24 at room temperature When;Finally solution is filtered by vacuum, obtained atrament is put into drying 12 hours in 100 DEG C of vacuum ovens, is obtained To carbon nanotube-manganese dioxide composite powder of black.The mass content of carbon nanotube is 65%, titanium dioxide in the composite granule The mass content of manganese is 35%.
2. the preparation of carbon nanotube-manganese dioxide composite electrode material slurry: weighing carbon nanotube-titanium dioxide of synthesis 20 milliliters of dimethylformamides-deionized water in the mixed solvent, mixed solvent is added in 0.2 milligram of manganese combination electrode material powder The volume ratio of middle dimethylformamide and deionized water is 4:1, and solution is carried out sonic oscillation 60 minutes, is then put in solution 5 hours are stood at room temperature, finally extracts uniform and stable supernatant as electrode slurry.
3. carbon nanotube-manganese dioxide composite electrode material slurry dipping and drying: use for laboratory lens wiping paper is impregnated In above prepared carbon nanotube-manganese dioxide composite electrode material slurry, dipping takes out after 1-5 minutes, does at room temperature It is 5-30 minutes dry;To realize that electrode material is fully penetrated in paper substrates, dipping-drying process is repeated, until wiping mirror The complete blackening of paper;It is finally that the substrate of complete blackening is 10 hours dry in 60 DEG C of vacuum drying ovens, obtain carbon nanotube-manganese dioxide Papery three-dimensional conductive substrate.
Two, prepared by L-type carbon nanotube-manganese oxide three-dimensional electrode arrays laser engraving
L-type electrod-array configuration is designed using computer software AutoCAD, controls CO using computer2Laser engraving machine is preparing Carbon nanotube-manganese oxide three-dimensional conductive substrate on carry out pattern engraving, the laser power used is 5W, laser scan rate 8000 mm/seconds;During laser scanning, distilled water, which is added dropwise, in paper substrates reduces temperature;It is repeatedly scanned with, until Intracorporal carbon nanotube-the manganese bioxide electrode material of laser-scanning position base is completely removed, and paper substrates are retained, most Designed L-type carbon nanotube-manganese dioxide three-dimensional electrod-array is obtained afterwards.Prepared L-type carbon nanotube-manganese dioxide three Tie up electrode length 15mm, electrode width 0.8mm, electrode gap 0.2mm in electrode array configurations.
Three, sodium sulphate-carboxymethyl cellulose hydrogel electrolyte dual coating prepares three-dimensional paper base capacitor
1. the preparation of sodium sulphate-carboxymethyl cellulose hydrogel electrolyte: it is molten to weigh carboxymethyl cellulose 1g, sodium sulphate 0.72g In 15ml deionized water, magnetic agitation 3 hours becomes clear until solution at 80 DEG C, obtains sodium sulphate-carboxymethyl Cellulose aquagel electrolyte;
2. sodium sulphate-carboxymethyl cellulose hydrogel electrolyte double-coated: dipping a small amount of prepared sulfuric acid with glass bar Sodium-carboxymethyl cellulose hydrogel electrolyte, even application is in good L-type carbon nanotube made above-manganese dioxide three-dimensional electricity The surface of pole array configuration is put in after drying 2 hours at room temperature, according still further to same operation in three-dimensional electrode arrays configuration reverse side Carry out electrolyte coating;Finally capacitor is placed in 40 DEG C of drying boxes and is dried 20 hours, L-type carbon nanotube-two is obtained Manganese oxide electrode has the paper base capacitor of three-dimensional energy storing structure.
There is the paper base capacitor of three-dimensional energy storing structure to have good technique as L-type for above-mentioned S type, A type, H-type Property and excellent performance, specific preparation process and L-type three-dimensional structure paper base capacitor preparation process are similar, repeat no more.

Claims (6)

1. a kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure, it is characterized in that: specific preparation step It is as follows:
Step 1: the preparation of papery three-dimensional conductive substrate
Electrode material slurry is prepared, using double-face vacuum suction filtration or dipping method, electrode material slurry is made to penetrate into porous flexible paper Matter base internal is attached to surface simultaneously, is then dried in 25-100 DEG C of vacuum drying oven 5-30 hours, forms papery Three-dimensional conductive substrate;
Step 2: prepared by the laser engraving of three-dimensional electrode arrays
Using the three-dimensional electrode arrays configuration of computer software design, laser pattern engraving is carried out on papery conductive substrate, During laser scanning, laser power is 1-30 watts, laser scan rate 100-10000 mm/second, and in paper substrates Upper dropwise addition deionized water or distilled water are to reduce temperature;Iterative cycles scanning is carried out, until in laser-scanning position papery matrix Electrode material be carbonized or aoxidize removing, and paper substrates are retained, to obtain three-dimensional electrode arrays configuration;
Step 3: the dual coating of electrolyte and the formation with three-dimensional energy storing structure paper base capacitor
Hydrogel electrolyte is prepared, then applies hydrogel electrolyte in the three-dimensional electrode arrays configuration tow sides prepared, Promote infiltration of the hydrogel electrolyte in paper substrates, is finally dried 5-30 hour at 25-50 DEG C in air, acquisition Paper base capacitor with three-dimensional energy storing structure.
2. a kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure according to claim 1, Be characterized in: the three-dimensional electrode arrays configuration includes interdigital electrode configuration and other shaped electrode structures, wherein special-shaped battery Pole structure includes but is not limited to S type, L-type, A type, H-type electrode structure, and since electrode material is permeated in entire paper substrates Inside, so that electrode has three-dimensional conductive characteristic.
3. a kind of three-dimensional structure paper base capacitor laser engraving preparation method according to claim 1, it is characterized in that: described Paper base capacitor with three-dimensional energy storing structure includes the single paper base capacitor with three-dimensional energy storing structure, also includes by multiple Cascaded structure, parallel-connection structure and the serial-parallel structure that paper base capacitor with three-dimensional energy storing structure is constituted.
4. a kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure according to claim 1, It is characterized in: the composition of the electrode material are as follows: the carbon materials powder and transition metal oxide powder that mass content is 40-95% The combination electrode material powder that body or conducting polymer materials powder are constituted;Wherein, the carbon materials powder is graphene, carbon The mixed powder of one or more of nanometer rods, carbon nanotube and activated carbon, transition metal oxide powder are vanadium oxide, oxygen Change cobalt, manganese oxide, nickel oxide or ferric oxide powder, conducting polymer materials powder is polyaniline, polypyrrole or polythiophene powder.
5. a kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure according to claim 1, It is characterized in: the preparation steps of the electrode material slurry are as follows: disperse combination electrode material powder in solvent, be placed in ice bath Sonic oscillation 30-90 minutes, then dispersion liquid is placed in and stands 5-24 hours at room temperature, finally extracts uniform and stable supernatant As electrode material slurry;Wherein, solvent be dimethylformamide, ethyl alcohol, dimethyl sulfoxide, N-Methyl pyrrolidone, go from The mixed solvent of one or more of sub- water, isopropanol.
6. a kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure according to claim 1, It is characterized in: the composition of the hydrogel electrolyte are as follows: deionized water includes carboxymethyl cellulose, polyvinyl alcohol or polyoxyethylene The high-molecular organic material of alkene and the inorganic matter comprising phosphoric acid, sulfuric acid, sodium sulphate, potassium hydroxide, lithium sulfate or lithium perchlorate, institute State deionized water: high-molecular organic material: the mass ratio of inorganic matter is 8-16:1-3:1;By the mixture matched above in 60- Magnetic agitation is carried out in 100 DEG C of water-baths, until solution becomes clear, obtains hydrogel electrolyte.
CN201910838104.2A 2019-09-05 2019-09-05 A kind of paper base capacitor laser engraving preparation method with three-dimensional energy storing structure Pending CN110504111A (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN111354576A (en) * 2020-03-03 2020-06-30 华东理工大学 Fabric-based flexible supercapacitor and manufacturing method thereof
CN111430155A (en) * 2020-03-03 2020-07-17 南京邮电大学 graphene/CoOxPreparation method and application of composite electrode
CN111934030A (en) * 2020-07-25 2020-11-13 浙江理工大学 Flexible planar micro energy storage device and preparation method thereof
CN114659619A (en) * 2022-03-22 2022-06-24 浙江大学 Full-soft self-driven vibration sensor and preparation method thereof

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