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 PDF

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Publication number
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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mxene
mos
dispersion liquid
electrode
super capacitor
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CN109830381B (en
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刘卯成
张雨杉
张斌梅
孔令斌
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Hangzhou Realistic New Materials Technology Co.,Ltd.
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Lanzhou University of Technology
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    • 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

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

MXene/MoS for electrode of super capacitor2Composite material and preparation method thereof
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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