CN109830381A - MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof - Google Patents
MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof Download PDFInfo
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- CN109830381A CN109830381A CN201910268631.4A CN201910268631A CN109830381A CN 109830381 A CN109830381 A CN 109830381A CN 201910268631 A CN201910268631 A CN 201910268631A CN 109830381 A CN109830381 A CN 109830381A
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- 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
Abstract
It for the MXene/MoS2 composite material and preparation method thereof of electrode of super capacitor, the steps include: that single layer MXene powder ultrasonic is dispersed in water to obtain MXene dispersion liquid, polyethylene imine is added, i.e. PEI solution obtains positively charged MXene dispersion liquid;By single layer MoS2Powder dispersion is in deionized water and ultrasonic, obtains single layer MoS2Dispersion liquid;By positively charged MXene and negatively charged MoS2Dispersion liquid is successively sprayed at polyethylene terephthalate, i.e., in PET base, obtains the MXene/MoS for electrode material for super capacitor after dry2Laminar composite.
Description
Technical field
The present invention relates to the MXene/MoS for electrode of super capacitor2The technology of preparing of composite material.
Background technique
Supercapacitor has power density as a kind of energy storage device between secondary cell and traditional capacitor
High, the advantages that charge/discharge speed is fast, good cycling stability.Electrode material be directly affect performance of the supercapacitor it is primary because
Element.MXene and MoS2Due to its unique two-dimensional layered structure, the channel quickly spread can be provided for electrolyte ion,
Electrode material for super capacitor as great development prospect.But the phenomenon that MXene will appear in use from stacking, make
Its surface cannot be fully utilized, and hinder the quick transmission of electrolyte ion, cause its theoretical capacity relatively low.MoS2
Although specific capacity is high, conductivity is low compared with MXene, keeps its high rate performance limited.Therefore it is prepared by electrostatic self-assembled method
MXene/MoS2Laminar composite can have both MXene and MoS2The advantages of, it is a kind of ideal fake capacitance electrode material.So
And the self-assembling method reported at present is mainly by the MoS with opposite charges2It is mixed with MXene dispersion liquid, makes MoS2With
MXene is combined by electrostatic interaction, to form MXene/MoS2Laminar composite.The self-assembling method controllability compared with
Difference, it is difficult to accurately control MXene/MoS2The number of plies and thickness of laminar composite.Therefore, the present invention proposes to use spraying from group
Dress method prepares MXene/MoS2Laminar composite will have the MoS of opposite charges by using spray gun2With MXene dispersion liquid
Successively it is sprayed on substrate.
Summary of the invention
The object of the present invention is to provide a kind of MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof.
The present invention is the MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof the steps include: list
Layer MXene powder ultrasonic is dispersed in water to obtain MXene dispersion liquid, and polyethylene imine, i.e. PEI solution is added, obtains positively charged
The MXene dispersion liquid of lotus;By single layer MoS2Powder dispersion is in deionized water and ultrasonic, obtains single layer MoS2Dispersion liquid;Just by band
The MXene of charge and negatively charged MoS2Dispersion liquid is successively sprayed at polyethylene terephthalate, i.e., in PET base, does
The MXene/MoS for electrode material for super capacitor is obtained after dry2Laminar composite.
Usefulness of the present invention is: compared to traditional liquid phase electrostatic self-assembled, this method is efficiently avoided from group
Randomness when dress has good controllability, is not only able to make two kinds of stratified material alternating intercalation distributions, and can be accurate
The number of plies and thickness for controlling composite material are important innovation and supplement to current existing self-assembling technique.
Specific embodiment
The present invention is the MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof the steps include: list
Layer MXene powder ultrasonic is dispersed in water to obtain MXene dispersion liquid, and polyethylene imine, i.e. PEI solution is added, obtains positively charged
The MXene dispersion liquid of lotus;By single layer MoS2Powder dispersion is in deionized water and ultrasonic, obtains single layer MoS2Dispersion liquid;Just by band
The MXene of charge and negatively charged MoS2Dispersion liquid is successively sprayed at polyethylene terephthalate, i.e., in PET base, does
The MXene/MoS for electrode material for super capacitor is obtained after dry2Laminar composite.
The above-described MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof, specific steps
Are as follows:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
It (5) will be with spray gun by MXene and MoS obtained by step (3) and step (4)2Dispersion liquid is successively sprayed on pet substrate, and 60
Pet substrate removing, can be obtained the MXene/MoS for being used for electrode material for super capacitor by DEG C dry 24 h2Lamellar composite material
Material.
The above-described MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof, described MXene
For Ti3C2TX,Or Ti2CTxOr V2CTxOr Mo3C2Tx。
The above-described MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof, described stirring are
Magnetic agitation.
The above-described MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof uses Germany
Schutze KA-2 automatic spray gun, the nozzle diameter using spray gun are 0.2 mm and 0.3 mm.
The above-described MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof, the atomization pressure of spray gun
Power is 4 bar perhaps 4.5 bar perhaps 5 bar perhaps 5.5 bar or 6 bar.
The above-described MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof, when spraying, are used
Pet substrate with a thickness of 0.5 mm.
Embodiment 1:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
(5) Germany's schutze KA-2 automatic spray gun is used, nozzle diameter is 0.2 mm, and adjusting atomizing pressure is 4 bar, will be walked
Suddenly (3) and step (4) gained MXene and MoS2Dispersion liquid is successively sprayed on pet substrate, 60 DEG C of 24 h of drying, by PET base
The MXene/MoS for electrode material for super capacitor can be obtained in plate removing2Laminar composite.
Embodiment 2:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
(5) Germany's schutze KA-2 automatic spray gun is used, nozzle diameter is 0.2 mm, and adjusting atomizing pressure is 4.5 bar, will
MXene and MoS obtained by step (3) and step (4)2Dispersion liquid is successively sprayed on pet substrate, 60 DEG C of 24 h of drying, by PET
The MXene/MoS for electrode material for super capacitor can be obtained in strippable substrate2Laminar composite.
Embodiment 3:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
(5) Germany's schutze KA-2 automatic spray gun is used, nozzle diameter is 0.2 mm, and adjusting atomizing pressure is 5 bar, will be walked
Suddenly (3) and step (4) gained MXene and MoS2Dispersion liquid is successively sprayed on pet substrate, 60 DEG C of 24 h of drying, by PET base
The MXene/MoS for electrode material for super capacitor can be obtained in plate removing2Laminar composite.
Embodiment 4:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
(5) Germany's schutze KA-2 automatic spray gun is used, nozzle diameter is 0.3 mm, and adjusting atomizing pressure is 5.5 bar, will
MXene and MoS obtained by step (3) and step (4)2Dispersion liquid is successively sprayed on pet substrate, 60 DEG C of 24 h of drying, by PET
The MXene/MoS for electrode material for super capacitor can be obtained in strippable substrate2Laminar composite.
Embodiment 5:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
(5) Germany's schutze KA-2 automatic spray gun is used, nozzle diameter is 0.3 mm, and adjusting atomizing pressure is 6 bar, will be walked
Suddenly (3) and step (4) gained MXene and MoS2Dispersion liquid is successively sprayed on pet substrate, 60 DEG C of 24 h of drying, by PET base
The MXene/MoS for electrode material for super capacitor can be obtained in plate removing2Laminar composite.
The above is the embodiment of the present invention, is not intended to limit the scope of the invention, all to be said using the present invention
Equivalent structure or equivalent flow shift made by bright book content is applied directly or indirectly in other relevant field technologies,
It similarly include in the invention patent protection scope.
Claims (7)
1. being used for the MXene/MoS of electrode of super capacitor2Composite material and preparation method thereof, which is characterized in that the steps include: list
Layer MXene powder ultrasonic is dispersed in water to obtain MXene dispersion liquid, and polyethylene imine, i.e. PEI solution is added, obtains positively charged
The MXene dispersion liquid of lotus;By single layer MoS2Powder dispersion is in deionized water and ultrasonic, obtains single layer MoS2Dispersion liquid;Just by band
The MXene of charge and negatively charged MoS2Dispersion liquid is successively sprayed at polyethylene terephthalate, i.e., in PET base, does
The MXene/MoS for electrode material for super capacitor is obtained after dry2Laminar composite.
2. the MXene/MoS according to claim 1 for electrode of super capacitor2Composite material and preparation method thereof, feature
It is, the specific steps are that:
(1) 30 mg MXene powder are added in 120 mL deionized waters, 1 h of ultrasound obtains MXene dispersion liquid;
(2) taking 120 mL concentration is the PEI aqueous solution of 8 mg/mL, and MXene points that step (1) obtains are added under stirring
Dispersion liquid, 60 DEG C of 12 h of water-bath;
(3) by dispersion liquid obtained by step (2), the centrifuge washing at 4000 rad/min, 5 min every time, until supernatant PH=7,
Obtain positively charged MXene dispersion liquid;
(4) 100 mg single layer MoS are taken2Powder is scattered in 50 mL deionized waters, and 1 h of ultrasound obtains MoS2Dispersion liquid;
(5) with spray gun by MXene and MoS obtained by step (3) and step (4)2Dispersion liquid is successively sprayed on pet substrate, and 60 DEG C
The MXene/MoS for being used for electrode material for super capacitor can be obtained in pet substrate removing by dry 24 h2Laminar composite.
3. the MXene/MoS according to claim 1 for electrode of super capacitor2Composite material and preparation method thereof, feature
Be: described MXene is Ti3C2TX,Or Ti2CTxOr V2CTxOr Mo3C2Tx。
4. the MXene/MoS according to claim 2 for electrode of super capacitor2Composite material and preparation method thereof, feature
Be: described stirring is magnetic agitation.
5. the MXene/MoS according to claim 2 for electrode of super capacitor2Composite material and preparation method thereof, feature
Be: the nozzle diameter using spray gun is 0.2 mm and 0.3 mm.
6. the MXene/MoS according to claim 2 for electrode of super capacitor2Composite material and preparation method thereof, feature
Be: the atomizing pressure of spray gun is 4 bar perhaps 4.5 bar perhaps 5 bar perhaps 5.5 bar or 6 bar.
7. the MXene/MoS according to claim 1 for electrode of super capacitor2Composite material and preparation method thereof, feature
It is: used pet substrate with a thickness of 0.5 mm when spraying.
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