CN113736318A - Crosslinkable high-stability strong-adhesion Mxene conductive ink and preparation method and application thereof - Google Patents
Crosslinkable high-stability strong-adhesion Mxene conductive ink and preparation method and application thereof Download PDFInfo
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- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 11
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Life Sciences & Earth Sciences (AREA)
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Abstract
A crosslinkable high-stability strong-cohesiveness Mxene conductive ink and a preparation method and application thereof relate to a conductive ink and a preparation method and application thereof. The invention aims to solve the problems that an interdigital electrode prepared by using the existing MXene cannot have both strong adhesiveness and excellent electrical property, and a super capacitor prepared by using the existing MXene does not have strong adhesiveness and excellent area specific capacitance on a substrate. The cross-linkable high-stability strong-adhesion Mxene conductive ink comprises, by weight, 0.1-5.0 parts of Mxene, 0.01-0.5 part of a binder, 0.001-0.01 part of a cross-linking agent and chemical sintering agent and 96.361-99.785 parts of a solvent. The method comprises the following steps: firstly, weighing materials; and secondly, mixing. A crosslinkable high-stability strong-adhesion Mxene conductive ink is used for preparing an interdigital electrode.
Description
Technical Field
The invention relates to conductive ink, a preparation method and application thereof.
Background
The binary transition metal carbon/nitrogen compound (Mxene) has the advantages of high conductivity, large interlayer spacing, abundant surface functional groups and the like, so that the binary transition metal carbon/nitrogen compound plays a key role in the field of electrochemical energy storage. The material performance can be greatly improved by improving the interlayer spacing of the Mxene material, mainly because the modified Mxene layered structure is more stable, the ion absorption and desorption rate is faster, and the Mxene layered structure has higher ion storage performance. Various strategies have been reported to prevent agglomeration and re-stacking of two-dimensional materials, such as 1) electrostatic self-assembly based on surface charge (e.g.: graphene and carbon nanotubes);
2) polar or large organic molecules are inserted into the MXene surface, a process that involves a series of mechanical ultrasonication to create mono-and multi-layered MXene colloidal solutions. By subsequent filtration, isolated MXene can be obtained. Intercalation often leads to reduced conductivity and capacitance properties due to the introduction of organic or other non-conductive molecules at the MXene surface, and involves complex separation processes. Therefore, expanding the MXene interlayer spacing without affecting the capacitive performance remains a problem that is being addressed by many researchers at this stage.
At present, an interdigital electrode prepared by using single MXene cannot have strong adhesion and excellent electrical property on various substrates, and a super capacitor prepared by using the existing MXene does not have strong adhesion and excellent area specific capacitance on the substrate.
Disclosure of Invention
The invention aims to solve the problems that an interdigital electrode prepared by using the existing MXene cannot have strong adhesiveness and excellent electrical property, and a super capacitor prepared by using the existing MXene does not have strong adhesiveness and excellent area specific capacitance on a substrate, and provides strong-adhesion Mxene conductive ink with high cross-linking stability, a preparation method and application thereof.
The cross-linkable high-stability strong-adhesion Mxene conductive ink comprises, by weight, 0.1-5.0 parts of Mxene, 0.01-0.5 part of a binder, 0.001-0.01 part of a cross-linking agent and chemical sintering agent and 96.361-99.889 parts of a solvent.
A preparation method of cross-linkable high-stability strong-adhesiveness Mxene conductive ink is completed according to the following steps:
firstly, weighing materials:
weighing 0.1 to 5.0 parts of Mxene, 0.01 to 0.5 part of binder, 0.001 to 0.01 part of cross-linking agent and chemical sintering agent and 96.361 to 99.889 parts of solvent according to the parts by weight;
secondly, mixing:
and (2) uniformly mixing 0.1-5.0 parts of Mxene, 0.01-0.5 part of binder, 0.001-0.01 part of cross-linking agent and chemical sintering agent weighed in the step one and 96.361-99.889 parts of solvent to obtain the cross-linkable high-stability Mxene conductive ink.
A crosslinkable high-stability strong-adhesion Mxene conductive ink is used for preparing an interdigital electrode.
The principle of the invention is as follows:
according to the invention, the binder and the cross-linking agent are added into the Mxene conductive ink, and the binder, the Mxene and the base material form hydrogen bonds, so that the adhesion force of the Mxene and the base material is improved; the adhesive attaches the Mxene to the substrate by forming hydrogen bonds with the Mxene and the substrate; preferably, the adhesive is sodium alginate; the cross-linking agent (which is a chemical sintering agent) used in the invention is one or a mixture of more of calcium chloride, magnesium chloride, ferrous chloride, ferric chloride, cobalt chloride, nickel chloride and the like, on one hand, divalent metal ions in the agent can be complexed with the binder, so that the binder forms a continuous network structure, and the Mxene film forms an integral structure with a stable structure, thereby solving the problems of poor adhesion of the Mxene on a substrate and poor bending resistance; on the other hand, the divalent metal ions and the binder in the reagent increase the interlayer spacing between the Mxene sheets, inhibit the spontaneous stacking of the Mxene sheets, remarkably improve the stability of the Mxene ink, and are beneficial to the embedding/releasing of electrolyte ions, so that the transmission performance of the electrolyte ions is improved. Most preferably, the cross-linking and chemical sintering agent is ferrous chloride.
The invention has the advantages that:
compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, the binder, the cross-linking agent and the chemical sintering agent are added into the Mxene conductive ink, so that the adhesion, the conductivity and the area specific capacitance of the Mxene super capacitor prepared by the Mxene super capacitor on a substrate are obviously improved; the preparation method of the conductive film is simple and easy to implement, low in cost and capable of realizing batch production.
Drawings
FIG. 1 is a plot of cyclic voltammetry at different sweep rates for a Mxene supercapacitor made according to the first example, where sweep rate of 1 is 20mV/s, sweep rate of 2 is 50mV/s, sweep rate of 3 is 100mV/s, sweep rate of 4 is 200mV/s, and sweep rate of 5 is 400 mV/s;
FIG. 2 is a graph of the charge and discharge curves of the Mxene supercapacitor prepared in the first example under different current densities, wherein the current density of 1 is 0.2mA/cm2And 2 has a current density of 0.3mA/cm2And 3 has a current density of 0.4mA/cm2And 4 has a current density of 0.7mA/cm2And 5 has a current density of 0.8mA/cm2And 6 has a current density of 0.9mA/cm2；
FIG. 3 is an optical picture of a Mxene supercapacitor prepared in the first example;
FIG. 4 is a scanning electron micrograph and a surface scanning electron micrograph of a cross section of a Mxene supercapacitor made according to example one;
FIG. 5 shows Mxene supercapacitor prepared in example one at 20mV s-1Performing a bending cycle stability test under CV scanning;
FIG. 6 shows Mxene supercapacitor made at 0.9mA cm for example one-2A cyclic charge-discharge test pattern performed at the current density of (a);
FIG. 7 is an XRD pattern of the conductive ink after 3 months of standing, wherein 1 is a crosslinkable, highly stable, strongly adherent Mxene conductive ink, 2 is the Mxene conductive ink prepared in example five, and 3 is the Mxene/sodium alginate conductive ink prepared in example six;
FIG. 8 is a graph comparing capacitance of supercapacitors, wherein 1 is an Mxene supercapacitor made according to example one, 2 is an Mxene supercapacitor made according to example five, and 3 is an Mxene supercapacitor made according to example six;
FIG. 9 is a graph comparing electrochemical impedance of supercapacitors, wherein 1 is an Mxene supercapacitor made according to example one and 2 is an Mxene supercapacitor made according to example five;
fig. 10 is a graph comparing the electrical properties of the interdigital electrodes, in which fig. 1 is an interdigital electrode prepared in the first example, fig. 2 is an interdigital electrode prepared in the fifth example, and fig. 3 is an interdigital electrode prepared in the sixth example.
Detailed Description
The following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit of the invention.
The first embodiment is as follows: the cross-linkable high-stability strong-adhesion Mxene conductive ink comprises, by weight, 0.1-5.0 parts of Mxene, 0.01-0.5 part of a binder, 0.001-0.01 part of a cross-linking and chemical sintering agent and 96.361-99.889 parts of a solvent.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: the binder is one or a mixture of more of sodium alginate, polyvinyl alcohol, polyurethane and chitosan. Other steps are the same as in the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the cross-linking agent and chemical sintering agent is one or a mixture of more of calcium chloride, magnesium chloride, ferrous chloride, ferric chloride, cobalt chloride and nickel chloride. The other steps are the same as in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is as follows: the solvent is one or a mixture of more of deionized water, methanol, ethanol and isopropanol. The other steps are the same as those in the first to third embodiments.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: the Mxene is Ti3C2Tx、Mo2CTxOr Nb2CTx(ii) a The thickness of the Mxene sheet layer is 2 nm-20 nm, and the length is 1 μm-4 μm. Other steps and embodimentsThe formulae one to four are the same.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is as follows: the preparation method of the cross-linkable high-stability strong-adhesiveness Mxene conductive ink is completed by the following steps:
firstly, weighing materials:
weighing 0.1 to 5.0 parts of Mxene, 0.01 to 0.5 part of binder, 0.001 to 0.01 part of cross-linking agent and chemical sintering agent and 96.361 to 99.889 parts of solvent according to the parts by weight;
secondly, mixing:
and (2) uniformly mixing 0.1-5.0 parts of Mxene, 0.01-0.5 part of binder, 0.001-0.01 part of cross-linking agent and chemical sintering agent weighed in the step one and 96.361-99.889 parts of solvent to obtain the cross-linkable high-stability Mxene conductive ink. The other steps are the same as those in the first to fifth embodiments.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is: a crosslinkable high-stability strong-adhesion Mxene conductive ink is used for preparing an interdigital electrode. The other steps are the same as those in the first to sixth embodiments.
The specific implementation mode is eight: the difference between this embodiment and one of the first to seventh embodiments is: the cross-linkable high-stability strong-adhesion Mxene conductive ink used for preparing the interdigital electrode comprises the following specific processes: preparing an interdigital electrode on a base material by adopting a spraying, direct writing or screen printing method; the base material is paper, PET, PI, LDPE, glass or silicon chip; the thickness of the interdigital electrode is 0.5-0.8 μm, and the finger spacing is 0.2-0.4 μm. The other steps are the same as those in the first to seventh embodiments.
The specific implementation method nine: the difference between this embodiment and the first to eighth embodiments is: the preparation of the interdigital electrode on the paper substrate by adopting the spraying method is specifically completed by the following steps:
firstly, flatly placing an A4 paper on an ink-jet printing operation table, and enabling the paper to be tightly attached to the operation table top through negative pressure;
secondly, selecting a 0.25-micrometer injection needle, and filling crosslinkable high-stability strong-cohesiveness Mxene conductive ink into a needle tube which is arranged above the A4 printing paper;
setting the spraying speed to be 10-60 mm/s, setting the temperature of an ink-jet printing operation table to be 50-100 ℃, spraying the crosslinkable high-stability strong-cohesiveness Mxene conductive ink on the A4 paper, wherein the spraying pressure is 1-10 MPa, the spraying times are 10-40 times, and finally, carrying out heat treatment at 50-100 ℃ for 2min to obtain the interdigital electrode. The other steps are the same as those in the first to eighth embodiments.
The detailed implementation mode is ten: the difference between this embodiment and one of the first to ninth embodiments is as follows: and (3) adopting a gel electrolyte pouring technology to pour the electrolyte on the interdigital electrode to obtain the Mxene supercapacitor. The other steps are the same as those in the first to ninth embodiments.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The first embodiment is as follows: a preparation method of crosslinkable high-stability strong-adhesion Mxene conductive ink comprises the following steps:
firstly, weighing materials:
weighing 2.5 parts of Mxene, 0.15 part of sodium alginate, 0.002 part of ferrous chloride and 97.348 parts of deionized water in parts by weight;
the thickness of the Mxene sheet layer in the step one is 2nm, and the length of the Mxene sheet layer is 2.95 mu m;
and secondly, uniformly mixing 2.5 parts of Mxene, 0.15 part of sodium alginate, 0.002 part of ferrous chloride and 97.348 parts of deionized water weighed in the step one to obtain the crosslinkable high-stability strong-adhesiveness Mxene conductive ink.
The preparation of the interdigital electrode on the paper substrate by using the crosslinkable high-stability strong-adhesion Mxene conductive ink prepared in the first embodiment as a raw material and adopting a spraying method is specifically completed according to the following steps:
firstly, flatly placing an A4 paper on an ink-jet printing operation table, and enabling the paper to be tightly attached to the operation table top through negative pressure;
secondly, selecting a 0.25-micrometer injection needle, and filling crosslinkable high-stability strong-cohesiveness Mxene conductive ink into a needle tube which is arranged above the A4 printing paper;
thirdly, setting the spraying speed to be 10mm/s, setting the temperature of an ink-jet printing operation table to be 50 ℃, spraying the crosslinkable high-stability strong-cohesiveness Mxene conductive ink on the A4 paper, wherein the spraying air pressure is 2MPa, the spraying times are 40 times, and finally carrying out heat treatment at 50 ℃ for 2min to obtain the interdigital electrode;
fourthly, pouring the electrolyte on the interdigital electrode by adopting a gel electrolyte pouring technology to obtain the Mxene super capacitor;
the electrolyte is PVA/H2SO4。
Example two: the present embodiment is different from the first embodiment in that: in the first step, 5 parts of Mxene, 0.15 part of sodium alginate, 0.002 part of ferrous chloride and 94.848 parts of deionized water are weighed according to parts by weight. Other steps and parameters are the same as those in the first embodiment.
Example three: the present embodiment is different from the first embodiment in that: in the first step, 5 parts of Mxene, 0.45 part of sodium alginate, 0.006 part of ferrous chloride and 94.544 parts of deionized water are weighed according to parts by weight. Other steps and parameters are the same as those in the first embodiment.
Example four: the present embodiment is different from the first embodiment in that: in the first step, 3 parts of Mxene, 0.45 part of sodium alginate, 0.006 part of ferrous chloride and 96.544 parts of deionized water are weighed according to parts by weight. Other steps and parameters are the same as those in the first embodiment.
Example five: the present embodiment is different from the first embodiment in that: in step one, 3 parts of Mxene and 97 parts of deionized water are weighed in parts by weight. Other steps and parameters are the same as those in the first embodiment.
Example six: the present embodiment is different from the first embodiment in that: in step one, 3 parts of Mxene, 0.45 part of sodium alginate and 96.55 parts of deionized water are weighed according to parts by weight. Other steps and parameters are the same as those in the first embodiment.
Table 1 shows the design parameters of the interdigital electrodes prepared in examples one to eight;
| setting printing parameters | Actual printing parameters | |
| Electrode length L (mm) | 17 | 17 |
| Electrode width W (mm) | 0.2 | 0.22 |
| Electrode finger spacing I (mum) | 0.5 | 0.37 |
FIG. 1 is a plot of cyclic voltammetry at different sweep rates for a Mxene supercapacitor made according to the first example, where sweep rate of 1 is 20mV/s, sweep rate of 2 is 50mV/s, sweep rate of 3 is 100mV/s, sweep rate of 4 is 200mV/s, and sweep rate of 5 is 400 mV/s;
as can be seen from FIG. 1, when the supercapacitor made based on example one Mxene ink was subjected to cyclic voltammetry tests at a sweep rate of 20-400mV/s, it can be seen that the CV curve appears rectangular and maintains a certain electric double layer behavior at 400mV/s, and thus the paper-based supercapacitor has rapid charge and discharge characteristics.
FIG. 2 is a graph of the charge and discharge curves of the Mxene supercapacitor prepared in the first example under different current densities, wherein the current density of 1 is 0.2mA/cm2And 2 has a current density of 0.3mA/cm2And 3 has a current density of 0.4mA/cm2And 4 has a current density of 0.7mA/cm2And 5 has a current density of 0.8mA/cm2And 6 has a current density of 0.9mA/cm2；
As can be seen from fig. 2; the current density is 0.2mA/cm2，0.3mA/cm2，0.4mA/cm2，0.7mA/cm2，0.8mA/cm2And 0.9mA/cm2The area specific capacitances of the supercapacitors prepared from the example one Mxene ink were 613mF/cm, respectively2，383mF/cm2，275mF/cm2，129mF/cm2，97mF/cm2And 74mF/cm2. The Mxene composite material with high specific area is favorable for the entering of electrolyte and is H+The storage of (2) provides sufficient embedding sites, thereby improving the rate capability.
FIG. 3 is an optical picture of a Mxene supercapacitor prepared in the first example;
as can be seen from FIG. 3, the Mxene interdigital electrode surface Mxene is uniformly distributed, the edge is smooth and no coffee ring phenomenon occurs.
FIG. 4 is a scanning electron micrograph and a surface scanning electron micrograph of a cross section of a Mxene supercapacitor made according to example one;
FIG. 4 shows that the surface of the Mxene film has more folds to form a cross-linked conductive network with an integrated structure, which is beneficial to the absorption and desorption of electrolyte ions.
FIG. 5 shows Mxene supercapacitor prepared in example one at 20mV s-1Performing a bending cycle stability test under CV scanning;
as can be seen from fig. 5, after the Mxene supercapacitor is repeatedly bent 10000 times, the capacitance change is less than 10%, which indicates that the conductive film formed by applying the Mxene conductive ink has a very good adhesion effect on the substrate.
FIG. 6 shows Mxene supercapacitor made at 0.9mAcm for example one-2A cyclic charge-discharge test pattern performed at the current density of (a);
as can be seen from FIG. 6, after the Mxene supercapacitor is repeatedly charged and discharged 10000 times, the capacitance change is less than 10%, which indicates that the supercapacitor formed by the Mxene conductive ink coating has good electrochemical stability.
FIG. 7 is an XRD pattern of the conductive ink after 3 months of standing, wherein 1 is a crosslinkable, highly stable, strongly adherent Mxene conductive ink, 2 is the Mxene conductive ink prepared in example five, and 3 is the Mxene/sodium alginate conductive ink prepared in example six;
as can be seen from fig. 7, the small angle diffraction peak intensity and width of the crosslinkable strong adhesive Mxene conductive ink with high stability prepared in example one are not greatly changed, confirming that it has long-term stability.
FIG. 8 is a graph comparing capacitance of supercapacitors, wherein 1 is an Mxene supercapacitor made according to example one, 2 is an Mxene supercapacitor made according to example five, and 3 is an Mxene supercapacitor made according to example six;
as can be seen from FIG. 8, the Mxene supercapacitor prepared in example five, the Mxene supercapacitor prepared in example six and the Mxene supercapacitor prepared in example one all had a current density of 0.2mA/cm2The capacitance is 75mF/cm respectively-2，76mF/cm-2And 383mF/cm-2Therefore, the supercapacitor prepared by the crosslinking high-stability strong-adhesion Mxene conductive ink provided by the embodiment of the invention has high area specific capacitance.
Fig. 9 is a graph comparing electrochemical impedance of supercapacitors, wherein 1 is the Mxene supercapacitor prepared in example one, and 2 is the Mxene supercapacitor prepared in example five.
As can be seen from fig. 9, the equivalent series resistances of the Mxene supercapacitor made in example six and the Mxene supercapacitor made in example one were 9 Ω and 22 Ω, respectively, when the frequency was 1 MHz.
Fig. 10 is a graph comparing the electrical properties of the interdigital electrodes, in which fig. 1 is an interdigital electrode prepared in accordance with example one, 2 is an interdigital electrode prepared in accordance with example five, and 3 is an interdigital electrode prepared in accordance with example six;
as can be seen from fig. 10, the Mxene interdigital electrodes prepared in example five, the Mxene interdigital electrodes prepared in example six and the Mxene interdigital electrode coating 40 prepared in example one have the following conductivities of 2653S/cm, 2653S/cm and 5081S/cm, respectively, and thus, the interdigital electrodes prepared by the crosslinked, highly stable, strongly adhesive Mxene conductive ink provided by the examples of the present invention have excellent electrical properties.
Claims (10)
1. The cross-linkable high-stability strong-adhesion Mxene conductive ink is characterized by comprising 0.1 to 5.0 parts by weight of Mxene, 0.01 to 0.5 part by weight of a binder, 0.001 to 0.01 part by weight of a cross-linking agent and chemical sintering agent and 96.361 to 99.889 parts by weight of a solvent.
2. The Mxene conductive ink with cross-linkable high stability and strong adhesiveness according to claim 1, wherein the binder is one or a mixture of sodium alginate, polyvinyl alcohol, polyurethane and chitosan.
3. The Mxene conductive ink with cross-linking property and high stability as claimed in claim 1, wherein said cross-linking agent and chemical sintering agent is one or more of calcium chloride, magnesium chloride, ferrous chloride, ferric chloride, cobalt chloride and nickel chloride.
4. The Mxene conductive ink with cross-linking and high stability and strong adhesiveness according to claim 1, wherein the solvent is one or a mixture of deionized water, methanol, ethanol and isopropanol.
5. A crosslinkable, highly stable, strongly adherent Mxene conductive ink according to claim 1, characterized in that said Mxene is Ti3C2Tx、Mo2CTxOr Nb2CTx(ii) a The thickness of the Mxene sheet layer is 2 nm-20 nm, and the length is 1 μm-4 μm.
6. The method for preparing the crosslinkable high-stability strong-adhesion Mxene conductive ink according to claim 1, characterized in that the method for preparing the crosslinkable high-stability strong-adhesion Mxene conductive ink is completed by the following steps:
firstly, weighing materials:
weighing 0.1 to 5.0 parts of Mxene, 0.01 to 0.5 part of binder, 0.001 to 0.01 part of cross-linking agent and chemical sintering agent and 96.361 to 99.889 parts of solvent according to the parts by weight;
secondly, mixing:
and (2) uniformly mixing 0.1-5.0 parts of Mxene, 0.01-0.5 part of binder, 0.001-0.01 part of cross-linking agent and chemical sintering agent weighed in the step one and 96.361-99.889 parts of solvent to obtain the cross-linkable high-stability Mxene conductive ink.
7. The use of a crosslinkable high-stability strong adhesive Mxene conductive ink according to claim 1 in the preparation of interdigital electrodes.
8. The application of the crosslinkable high-stability strong-adhesiveness Mxene conductive ink according to claim 7, which is characterized in that the crosslinkable high-stability strong-adhesiveness Mxene conductive ink is used for preparing interdigital electrodes by the following specific processes: preparing an interdigital electrode on a base material by adopting a spraying, direct writing or screen printing method; the base material is paper, PET, PI, LDPE, glass or silicon chip; the thickness of the interdigital electrode is 0.5-0.8 μm, and the finger spacing is 0.2-0.4 μm.
9. The application of the cross-linkable high-stability strong-adhesiveness Mxene conductive ink according to claim 8, characterized in that the preparation of the interdigital electrode on the paper substrate by the spraying method is specifically completed by the following steps:
firstly, flatly placing an A4 paper on an ink-jet printing operation table, and enabling the paper to be tightly attached to the operation table top through negative pressure;
secondly, selecting a 0.25-micrometer injection needle, and filling crosslinkable high-stability strong-cohesiveness Mxene conductive ink into a needle tube which is arranged above the A4 printing paper;
setting the spraying speed to be 10-60 mm/s, setting the temperature of an ink-jet printing operation table to be 50-100 ℃, spraying the crosslinkable high-stability strong-cohesiveness Mxene conductive ink on the A4 paper, wherein the spraying pressure is 1-10 MPa, the spraying times are 10-40 times, and finally, carrying out heat treatment at 50-100 ℃ for 2min to obtain the interdigital electrode.
10. The application of the crosslinkable high-stability strong-adhesiveness Mxene conductive ink according to claim 7, which is characterized in that a gel electrolyte casting technology is adopted to cast the electrolyte on the interdigital electrode, so as to obtain the Mxene supercapacitor.
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