CN115295328A - Method for preparing self-supporting MXene composite membrane by metal reduction - Google Patents

Method for preparing self-supporting MXene composite membrane by metal reduction Download PDF

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Publication number
CN115295328A
CN115295328A CN202211151781.5A CN202211151781A CN115295328A CN 115295328 A CN115295328 A CN 115295328A CN 202211151781 A CN202211151781 A CN 202211151781A CN 115295328 A CN115295328 A CN 115295328A
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mxene
composite membrane
mxene composite
self
metal
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刘现玉
赵磊
姚淑霞
魏云霞
孙看军
谢明勋
刘媛媛
马俊杰
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Lanzhou City University
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Lanzhou City University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite

Abstract

The invention discloses a method for preparing a self-supporting MXene composite membrane by metal reduction. The uniform mixed solution of the electrode material and MXene is reduced by using the metal foil to prepare the self-supporting MXene composite membrane with the continuous three-dimensional porous conductive network structure. The size of the composite film is determined by the area of the metal foil, and thus, this method facilitates scale-up preparation. The MXene composite membrane has high conductivity, large specific surface area, porous structure, no binder and no current collector, so that the electrode material based on the MXene composite membrane has excellent electrochemical performance. The method has the advantages of simplicity and convenience in operation, strong applicability, excellent performance and the like, and has wide application prospects in the fields of green energy, smart power grids, transportation and the like.

Description

Method for preparing self-supporting MXene composite membrane by metal reduction
Technical Field
The invention belongs to the field of electrochemistry, and particularly relates to a method for preparing a self-supporting MXene composite membrane by metal reduction.
Background
Fossil fuels (petroleum, coal, etc.) have always led to the energy supply of human demand. However, the use of fossil fuels can lead to a number of environmental problems, particularly air pollution caused by the emission of sulfur dioxide, nitrous oxide, carbon dioxide and other volatile organic compound-containing gases. In order to relieve the environmental pressure caused by energy crisis, the development of clean renewable energy sources (such as solar energy, wind energy, tidal energy and the like) is urgent. However, these clean renewable energy sources suffer from the drawbacks of intermittency, dispersability and unpredictability, which prevents their efficient use. Large-scale energy storage devices need to be adapted for efficient use of renewable energy sources, and the most promising large-scale energy storage device is an electrochemical cell. Electrochemical cells, as an efficient energy conversion and storage device, are a major concern because of their advantages of being environmentally friendly, not limited by natural factors, and low cost. At present, most of electrode materials used for electrochemical cells are non-conductive compounds, and when the electrode materials are used, conductive carbon needs to be added to improve the conductivity of the electrode materials, and meanwhile, a binder is added to coat the electrode materials on a current collector. However, the use of a binder and a current collector affects the exposure of active sites of electrode materials, increases the weight of the entire interior of the battery, and thus does not allow the preparation of high-performance electrochemical cells.
MXene is used as transition metal carbon/nitride with a two-dimensional sheet structure, and has metal conductivity, good mechanical property and excellent electrochemical property. MXene has the expression M n+1 X n T x It is obtained by selective etching of MAX phase ceramic materials.In the phase, M represents a transition metal (Ti, V, cr, mn, zr, etc.), A represents a main group element (Al, si, etc.), X represents an inorganic element (C, N, etc.), and T is a surface-attached active group (-OH, -O-, -F, etc.). Selectively etching the A layer in the MAX phase by adopting hydrofluoric acid to obtain the MXene with a two-dimensional structure. The MXene has the advantages of high conductivity, large specific surface area, good mechanical property and the like, and meanwhile, the MXene sheet structure is easy to assemble to form a conductive network structure, thereby being beneficial to realizing the preparation of the self-supporting electrode material without a current collector and a binder. The preparation methods of the MXene composite film are various, and include a vacuum filtration method, a layer-by-layer self-assembly method, an electrochemical deposition method, a hot pressing method and the like. Wherein, the preparation process of the vacuum filtration method is convenient and has small requirements on experimental equipment, thereby being widely used. However, since the vacuum filtration equipment is limited, it is difficult to produce a thin film having a large area, and the industrialization thereof is limited. The hot pressing method has the best industrialization prospect as a method for preparing the film on a large scale, but has higher requirements on equipment. Therefore, it is urgent to develop a method for conveniently preparing an MXene composite film on a large scale.
The invention utilizes the metal foil to reduce MXene solution to prepare the self-supporting MXene film with a continuous three-dimensional porous conductive network structure. If the functional electrode material is mixed in the MXene solution, the binderless self-supporting MXene composite membrane can be obtained. The size of the composite film is determined by the area of the metal foil, and thus, this method facilitates scale-up preparation. The MXene film has high conductivity, large specific surface area and a porous structure, so that the electrode material based on the MXene composite film has excellent electrochemical performance. The method has the advantages of simplicity and convenience in operation, strong applicability, excellent performance and the like, and has wide application prospects in the fields of green energy, smart power grids, transportation and the like.
Disclosure of Invention
The invention develops a method for preparing a self-supporting MXene composite membrane by metal reduction, and the method has the advantages of simplicity, easiness in amplification, strong applicability, good performance and the like.
A method for preparing a self-supporting MXene composite membrane by metal reduction and an application thereof comprise the following steps:
s1: and mixing the electrode material solution with the MXene solution, stirring for 10-300 minutes, and performing ultrasonic treatment for 10-300 minutes to form a uniform composite material mixed solution.
Wherein the electrode material is active carbon, carbon nano tube, graphite, graphene and MnO 2 、RuO 2 、Co 3 O 4 、V 2 O 5 、Si、Sn、Ge、TiO 2 、NiCo 2 O 4 Polyacetylene, polypyrrole, polyaniline, lithium iron phosphate or lithium titanate.
MXene has a representative formula of M n+1 X n T x Wherein M represents a transition metal Ti, V, cr, mn or Zr, X represents an inorganic element C or N, and T is a surface-attached active group-OH, -O-or-F. The mass ratio of the electrode material to MXene is 10.
S2: and (3) putting the metal foil into the mixed solution, and reducing the mixed solution at room temperature for 0.5-24 hours to form an MXene composite film on the surface of the metal foil. Wherein the metal foil is a foil of metal iron, nickel, zinc, aluminum or tin, and the thickness of the metal foil is 1 to 500 micrometers.
S3: and putting the obtained metal foil and the MXene composite film on the surface into an acid solution to peel the MXene composite film from the surface of the metal foil, and polishing the peeled metal foil for reuse. Wherein the acid solution is an acid solution capable of reacting with the metal foil, and comprises a sulfuric acid solution, a hydrochloric acid solution, a nitric acid solution or an acetic acid solution, and the concentration of the acid solution is 0.1 to 3mol L -1 。
S4: and washing the stripped MXene composite membrane with deionized water to be neutral, and drying to obtain the MXene composite membrane. Wherein the drying is freeze drying, heating drying or naturally drying.
Compared with the prior art, the method for preparing the self-supporting MXene composite membrane by metal reduction has the following beneficial effects:
1. the MXene composite membrane is prepared by reducing the metal foil, and the method has the advantages of simple operation, no need of heating and no need of complex equipment.
2. The MXene composite membrane prepared by the method does not need to add a binder, does not need to be coated on a current collector, improves the conductivity of the electrode, reduces the weight of the electrode by self-supporting the MXene composite membrane, and is beneficial to the performance of an electrochemical cell.
3. The area of the MXene composite film prepared by the method is determined by the size of the metal foil, the large-area MXene composite film can be prepared by only amplifying the area of the metal foil, and meanwhile, the stripped metal foil can be repeatedly utilized after being polished.
4. The MXene composite membrane prepared by the method has wide applicability, the material only needs to be uniformly dispersed into MXene solution so as to meet the requirements of different types of electrochemical cells, and the material has strong universality.
Drawings
Fig. 1a is a cross-sectional view of an MXene film prepared in example 1 of the present invention.
Fig. 1b is an enlarged cross-sectional view of an MXene film prepared in example 1 of the present invention.
Fig. 2a is a graph of rate capability of an MXene film prepared in example 1 of the present invention.
FIG. 2b shows 1 ag of MXene film prepared in example 1 of the present invention -1 And (4) a cycle performance graph.
FIG. 2c shows 10 ag of MXene film prepared in example 1 of the present invention -1 And (4) a cycle performance graph.
FIG. 3a is a cross-sectional view of MXene @ nickel cobaltate composite membrane prepared in example 2 of the present invention.
Fig. 3b is an enlarged cross-sectional view of the mxene @ nickel cobaltate composite membrane prepared in example 2 of the present invention.
FIG. 4a is a graph of rate capability of MXene @ nickel cobaltate composite membrane prepared in example 2 of the present invention.
FIG. 4b shows 1A g of MXene @ nickel cobaltate composite membrane prepared in example 2 of the present invention -1 And (4) a cycle performance graph.
FIG. 4c shows 10A g of MXene @ nickel cobaltate composite membrane prepared in example 2 of the present invention -1 And (4) a cycle performance diagram.
Fig. 5a is a cross-sectional view of an mxene @ polyaniline composite membrane prepared in example 3 of the present invention.
FIG. 5b is an enlarged cross-sectional view of MXene @ polyaniline composite membrane prepared in example 3 of the present invention.
FIG. 6 shows 1A g of MXene @ polyaniline composite membrane prepared in example 3 of the present invention -1 And (4) a cycle performance graph.
FIG. 7a is a cross-sectional view of MXene @ titanium oxide composite membrane prepared in example 4 of the present invention.
FIG. 7b is an enlarged cross-sectional view of MXene @ titanium oxide composite membrane prepared in example 4 of the present invention.
FIG. 8 shows 1A g of MXene @ titanium oxide composite membrane prepared in example 4 of the present invention -1 And (4) a cycle performance diagram.
Detailed Description
The invention will be further explained and illustrated with reference to specific examples.
Example 1
(1) Preparation of MXene solution: MXene is considered to be an ideal electrode material or conductive substrate due to its high specific surface area, high conductivity and excellent mechanical properties. The invention can be similarly illustrated by preparing a pure MXene film as a comparative example without adding any other electrode material. Commercial or laboratory prepared MXene solution diluted to 8 mg mL -1 After 60 minutes of stirring and 60 minutes of ultrasonication, a uniformly dispersed MXene solution was formed.
S2: and (3) putting a zinc foil with the thickness of 200 microns into the MXene solution, reducing the zinc foil at room temperature for 2 hours to form an MXene film on the surface of the zinc foil, and washing the unreacted MXene solution by using deionized water.
S3: putting 1mol L of zinc foil and MXene film on the surface -1 And (3) stripping the MXene film from the surface of the zinc foil in the hydrochloric acid solution, and polishing the stripped zinc foil for reuse.
S4: and washing the stripped MXene film with deionized water to be neutral, and freeze-drying to obtain the self-supporting MXene electrode material. Fig. 1a is a cross-sectional view of a MXene film prepared with a thickness of about 320 microns. Fig. 1b is an enlarged cross-sectional view of the prepared MXene film exhibiting a three-dimensional porous conductive network structure that facilitates the transport of ions and electrons.
Subsequent electrochemical cycling performance of MXene membraneTesting by selecting 3mol L -1 The potassium hydroxide is used as electrolyte, the platinum sheet is used as a counter electrode, the calomel electrode is used as a reference electrode, and the MXene membrane is used as a working electrode. FIG. 2a shows the rate capability of MXene film prepared by the present invention as electrode at 1, 2, 3, 5 and 10 Ag -1 Under the current density, the electrode capacity of the MXene film can reach 73.6, 65.8, 63.0, 60.2 and 56.9 Cg respectively -1 . Even if the current density is from 1 ag -1 Increased to 10 ag -1 The capacity retention rate remains 77%. FIG. 2b 1 Ag of MXene film prepared by the present invention as electrode -1 Cycle performance, capacity after 1000 cycles of operation 68.6 Cg -1 The capacity retention rate can reach 93%. FIG. 2c 10A g of MXene film prepared by the present invention as electrode -1 Cycle performance, capacity of 56.0 cg remaining after 1000 cycles of operation -1 The capacity retention rate can reach 98%, and the MXene film prepared by the method has excellent multiplying power and cycle performance.
Example 2
(1) Preparing a composite material mixed solution: nickel cobaltate is used as a binary metal oxide, and is often used as an electrode material of a super capacitor and an ion battery. Commercial or laboratory prepared nickel cobaltate electrode material was configured to 2 mg mL -1 A suspension of (2). 20 mL nickel cobaltate suspension and 20 mL8 mg mL -1 Mixing the MXene solution, stirring for 60 minutes, and performing ultrasonic treatment for 60 minutes to form a uniform composite material mixed solution.
S2: and (3) putting the zinc foil with the thickness of 200 microns into the obtained mixed solution, reducing the zinc foil for 2 hours at room temperature to form an MXene @ nickel cobaltate composite membrane on the surface of the zinc foil, and washing the unreacted mixed solution by using deionized water.
S3: adding 1mol L of zinc foil and MXene @ nickel cobaltate composite membrane on the surface -1 In the hydrochloric acid solution, the MXene @ nickel cobaltate composite film is stripped from the surface of the zinc foil, and the stripped zinc foil can be reused after being polished.
S4: washing the stripped MXene @ nickel cobaltate composite membrane with deionized water to neutrality, and freeze drying to obtain the self-supporting MXene @ nickel cobaltate electrode material. FIG. 3a is a cross-sectional view of a prepared MXene @ nickel cobaltate composite membrane, which has a thickness of about 510 μm. Fig. 3b is a cross-sectional enlarged view of the prepared MXene @ nickel cobaltate composite membrane, the MXene @ nickel cobaltate composite membrane shows a three-dimensional porous conductive network structure, and nickel cobaltate is uniformly dispersed in a framework of the MXene membrane in a micron mode, and the three-dimensional porous conductive network structure is beneficial to transmission of ions and electrons.
Then, carrying out electrochemical cycle performance test on the MXene @ nickel cobaltate film by selecting 3mol L -1 The potassium hydroxide is used as electrolyte, the platinum sheet is used as a counter electrode, the calomel electrode is used as a reference electrode, and the MXene @ nickel cobaltate film is used as a working electrode. FIG. 4a is the rate capability of MXene @ nickel cobaltate film prepared by the present invention as electrode at 1, 2, 3, 5 and 10A g -1 Under the current density, the electrode capacity of MXene @ nickel cobaltate film can reach 134.5, 123.4, 113.5, 100.3 and 84.9C g -1 . Even if the current density is from 1 ag -1 Increased to 10 ag -1 The capacity retention rate is still maintained at 63%. FIG. 4b 1A g of MXene @ nickel cobaltate film prepared by the present invention as electrode -1 Cycle performance, capacity of 121.4 Cg after 1000 times of recycling -1 The capacity retention rate can reach 90%. FIG. 4c 10A g of MXene @ nickel cobaltate film prepared by the present invention as electrode -1 Cycle performance, capacity of 81.0 cg remaining after 1000 cycles of operation -1 The capacity retention rate can reach 95%, and the MXene @ nickel cobaltate film prepared by the method has excellent multiplying power and cycle performance.
Example 3
(1) Preparing a composite material mixed solution: polyaniline is used as a conductive polymer, and is often used as an electrode material of a super capacitor and an ion battery. Commercially or laboratory prepared polyaniline electrode material was configured to 2 mg mL -1 A suspension of (a). 20 mL polyaniline suspension and 20 mL8 mg mL -1 Mixing the MXene solution, stirring for 60 minutes, and performing ultrasonic treatment for 60 minutes to form a uniform composite material mixed solution.
S2: and (3) putting the zinc foil with the thickness of 200 microns into the obtained mixed solution, reducing the zinc foil for 2 hours at room temperature to form an MXene @ polyaniline composite membrane on the surface of the zinc foil, and washing the unreacted mixed solution by using deionized water.
S3: adding 1mol L of zinc foil and MXene @ polyaniline composite membrane on the surface -1 In the hydrochloric acid solution, the MXene @ polyaniline composite membrane is stripped from the surface of the zinc foil, and the stripped zinc foil is polished for reuse.
S4: and washing the peeled MXene @ polyaniline composite membrane with deionized water to be neutral, and freeze-drying to obtain the self-supporting MXene @ polyaniline electrode material. FIG. 5a is a cross-sectional view of MXene @ polyaniline composite membrane prepared to a thickness of about 60 μm. Fig. 5b is a cross-sectional enlarged view of the prepared MXene @ polyaniline composite membrane, the MXene @ polyaniline composite membrane shows a three-dimensional porous conductive network structure, and the polyaniline material is uniformly dispersed in the skeleton of the MXene membrane, and the three-dimensional porous conductive network structure is favorable for transmission of ions and electrons. Then, carrying out electrochemical cycle performance test on the MXene @ polyaniline film by selecting 1mol L -1 The sulfuric acid is used as electrolyte, the platinum sheet is used as a counter electrode, the calomel electrode is used as a reference electrode, and the MXene @ polyaniline film is used as a working electrode. FIG. 6 1A g of MXene @ polyaniline film prepared by the invention as electrode -1 Cycle performance, initial capacity 109.4 Cg -1 After 1000 times of recycling operation, the container still has a capacity of 101.7 Cg -1 The capacity retention rate can reach 93%, and MXene @ polyaniline prepared by the method has excellent cycle performance.
Example 4
(1) Preparing a composite material mixed solution: titanium oxide is an inexpensive oxide, and is often used as an electrode material for supercapacitors and ion batteries. Commercially or laboratory prepared titanium oxide electrode material was configured to 2 mg mL -1 A suspension of (2). 20 mL titanium oxide suspension was mixed with 20 mL8 mg mL -1 Mixing the MXene solution, stirring for 60 minutes, and performing ultrasonic treatment for 60 minutes to form a uniform composite material mixed solution.
S2: and (3) putting the zinc foil with the thickness of 200 microns into the obtained mixed solution, reducing the zinc foil for 2 hours at room temperature to form an MXene @ titanium oxide composite membrane on the surface of the zinc foil, and washing the unreacted mixed solution by using deionized water.
S3: m of zinc foil and surfaceXene @ titanium oxide composite film added with 1mol L -1 In the hydrochloric acid solution, the MXene @ titanium oxide composite membrane is stripped from the surface of the zinc foil, and the stripped zinc foil is polished for reuse.
S4: washing the stripped MXene @ titanium oxide composite membrane with deionized water to be neutral, and freeze-drying to obtain the self-supporting MXene @ titanium oxide electrode material. FIG. 7a is a cross-sectional view of a prepared MXene @ titanium oxide composite membrane having a thickness of about 180 μm. FIG. 7b is a cross-sectional enlarged view of the prepared MXene @ titanium oxide composite membrane, wherein the MXene @ titanium oxide composite membrane shows a three-dimensional porous conductive network structure, and the titanium oxide nanoparticles are uniformly dispersed in the framework of the MXene membrane, and the three-dimensional porous conductive network structure is beneficial to the transmission of ions and electrons. Then, carrying out electrochemical cycle performance test on the MXene @ titanium oxide film by selecting 3mol L -1 The potassium hydroxide is used as electrolyte, the platinum sheet is used as a counter electrode, the calomel electrode is used as a reference electrode, and the MXene @ titanium oxide film is used as a working electrode. FIG. 8 shows 1 Ag of MXene @ polyaniline film prepared by the present invention as an electrode -1 Cycle Performance, initial capacity 117.1 Cg -1 After 1000 times of recycling work, the product still has a capacity of 112.7 Cg -1 The capacity retention rate can reach 96%, and the MXene @ polyaniline film prepared by the method has excellent cycle performance.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims (7)

1. A method for preparing a self-supporting MXene composite membrane by metal reduction is characterized by comprising the following steps: the method comprises the following steps:
s1: mixing the electrode material solution with the MXene solution, stirring and ultrasonically treating to form a uniform composite material mixed solution;
s2: putting a metal foil into the obtained mixed solution, and reducing the mixed solution at room temperature for 0.5 to 24 hours to form an MXene composite film on the surface of the metal foil;
s3: putting the obtained metal foil and the MXene composite film on the surface into an acid solution to strip the MXene composite film from the surface of the metal foil;
s4: and washing the stripped MXene composite membrane with deionized water to be neutral, and drying to obtain the MXene composite membrane.
2. The method for preparing the self-supporting MXene composite membrane by metal reduction according to claim 1, wherein: in step S1, the electrode material is activated carbon, carbon nano tube, graphite, graphene, mnO 2 、RuO 2 、Co 3 O 4 、V 2 O 5 、Si、Sn、Ge、TiO 2 、NiCo 2 O 4 Polyacetylene, polypyrrole, polyaniline, lithium iron phosphate, or lithium titanate.
3. The method for preparing the self-supporting MXene composite membrane by metal reduction according to claim 1, wherein: in step S1, MXene has a representative formula of M n+1 X n T x Wherein M represents a transition metal Ti, V, cr, mn or Zr, X represents an inorganic element C or N, and T is a surface-attached active group-OH, -O-or-F.
4. The method for preparing the self-supporting MXene composite membrane by metal reduction according to claim 1, wherein: in the step S1, the mass ratio of the electrode material to MXene is 10.
5. The method for preparing the self-supporting MXene composite membrane by metal reduction according to claim 1, wherein: in the step S2, the metal foil is a foil of metal iron, nickel, zinc, aluminum or tin, and the thickness of the metal foil is 1 to 500 micrometers.
6. The method for preparing the self-supporting MXene composite membrane by metal reduction according to claim 1, wherein: in step S3, the acid solution is an acid solution capable of reacting with the metal foil, and includes a sulfuric acid solution, a hydrochloric acid solution, and a nitric acid solutionLiquid or acetic acid solution, the concentration of the acid solution is 0.1 to 3mol L -1 。
7. The method for preparing the self-supporting MXene composite membrane by metal reduction according to claim 1, wherein: in the step S4, the drying is freeze drying, heating drying or natural drying.
CN202211151781.5A 2022-09-21 2022-09-21 Method for preparing self-supporting MXene composite membrane by metal reduction Pending CN115295328A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110660970A (en) * 2019-10-09 2020-01-07 山东大学 Flexible self-supporting MXene/zinc composite electrode and preparation method and application thereof
CN110993375A (en) * 2019-12-02 2020-04-10 山东理工大学 Method for preparing compact-structure RGO/MXene-sulfuric acid supercapacitor flexible electrode in one step and application thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110660970A (en) * 2019-10-09 2020-01-07 山东大学 Flexible self-supporting MXene/zinc composite electrode and preparation method and application thereof
CN110993375A (en) * 2019-12-02 2020-04-10 山东理工大学 Method for preparing compact-structure RGO/MXene-sulfuric acid supercapacitor flexible electrode in one step and application thereof

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