CN106935813A - Graphene-based flexible combination electrode material and its preparation method and application - Google Patents
Graphene-based flexible combination electrode material and its preparation method and application Download PDFInfo
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Abstract
The invention provides a kind of graphene-based flexible combination electrode material and its preparation method and application.The graphene-based flexible combination electrode material is the fexible film that is made of Graphene and active material, wherein, the active material is the two-dimentional active material of nano-sheet, and the Graphene and the alternately laminated arrangement of two-dimentional active material.The preparation method of the graphene-based flexible combination electrode material, comprises the following steps：Graphene and two-dimentional active material are provided respectively；The Graphene and the two-dimentional active material dispersion form mixed dispersion liquid in a solvent；The mixed dispersion liquid is carried out into layer assembly treatment, graphene-based flexible combination electrode material is obtained；Or after the mixed dispersion liquid is carried out into layer assembly treatment, be heat-treated, obtain graphene-based flexible combination electrode material.
Description
Technical field
The invention belongs to electrode material field, more particularly to a kind of graphene-based flexible combination electrode material and its preparation side
Method and application.
Background technology
Graphene, one kind is by sp2The two dimensional surface unimolecule layer crystal of the hexagoinal lattice close-packed arrays of hydridization carbon composition
Body material, since being found from its unique physicochemical properties, has caused the extensive concern of whole world scientists.Due to stone
Black alkene has theoretical specific surface area very high, excellent electric conductivity and excellent mechanical performance.Therefore, it is a kind of preferable
Electrode material, has very big application potential in the energy storage such as ultracapacitor, lithium ion battery field.The high-ratio surface of Graphene
Product and high conductivity make it to be widely applied in the preparation of the electrode material of various energy storage devices as supporting substrate.
In the combination electrode material of these energy storage devices, on the one hand Graphene as conductive channel, can improve the electric conductivity of material；
On the other hand, Graphene can improve the dispersiveness of electrode material as supporting substrate, improve the performance of electrode material.Graphene
After area load active material, can effectively alleviate the volumetric expansion and contraction of active material charge and discharge process, holding structure
Stabilization, makes composite have excellent cyclical stability.Additionally, Graphene can be directly as double electric layers supercapacitor
Electrode material, with good capacitive property, and does not chemically react during discharge and recharge, and property is highly stable.
But the specific capacity of such carbon material is relatively low, its application in energy storage device field is constrained.
Fake capacitance material has specific capacity high, however, such material shows poor multiplying power property and low electric conductivity.
Researcher often answers electric double layer material with fake capacitance material to improve the energy storage density and stability of fake capacitance material
Conjunction prepares electrode material.But, be used in mixed way for polymeric binder, conductive agent and active material, most by traditional technology of preparing
, in collection liquid surface, preparation technology is complicated, is easily caused the reunion of active material for back loading.Additionally, prepared electrode material
Not the advantages of not possessing flexibility, lightweight.In recent years, the electrode material of binder free and conductive agent is increasingly paid attention to and is developed.Such as,
Xie Junfeng etc. are in " Layer-by-layer β-Ni (OH)2/graphene nanohybrids for
ultraflexible all-solid-state thin-film supercapacitors with high
electrochemical performance”(《Nano Energy》, 2013,2, pp.65-74) in a text in graphenic surface
Original position is prepared for nickel hydroxide hybrid particulates, obtains the self-supporting combination electrode thin-film material with good chemical property,
But its preparation technology is complicated, it is necessary to carry out secondary stripping to hybrid particulates, while yield is relatively low.Additionally, some composite hybridizations
Particle still needs binding agent, conductive agent to prepare electrode material.
The content of the invention
It is an object of the invention to provide a kind of flexible composite electrode material based on Graphene and preparation method thereof, it is intended to
Solving conventional electrode materials needs binding agent, conductive agent and active material mixing back loading on a current collector, the method technique
Complexity, and the electrode material for preparing is not the problems such as possess flexible, lightweight.
The present invention is achieved in that a kind of graphene-based flexible combination electrode material, and the graphene-based flexible is combined
Electrode material is the fexible film that Graphene and active material are made, wherein, the active material is living for the two dimension of nano-sheet
Property material, and the Graphene and the alternately laminated arrangement of two-dimentional active material.
Accordingly, a kind of preparation method of graphene-based flexible combination electrode material, comprises the following steps：
Graphene and two-dimentional active material are provided respectively；
The Graphene and the two-dimentional active material dispersion are formed into mixed dispersion liquid in organic solvent；
The mixed dispersion liquid is carried out into layer assembly treatment, graphene-based flexible combination electrode material is obtained；Or by institute
After stating mixed dispersion liquid and carrying out layer assembly treatment, it is heat-treated, is obtained graphene-based flexible combination electrode material.
And, a kind of application of above-mentioned graphene-based flexible combination electrode material in battery, ultracapacitor field.
It is different from the electrode of deposition or supported active material (including binding agent, conductive agent) on flexible substrate, the present invention
The graphene-based flexible combination electrode material of offer, it is not necessary to flexible substrate, it is not required that binding agent and conductive agent, it is simple to rely on
The grapheme material of active material and electric conductivity, you can obtain the thin-film electrode material of self-supporting.Specifically, the present invention is provided
Graphene-based flexible combination electrode material, formed by the laminated assembling technology of two-dimensional graphene and two-dimentional active material and replaced
The layer structure of stacked arrangement, makes both constitute an organic whole, plays the synergy of the two, while comprehensively utilizing graphite
The pseudocapacitors characteristic of the good flexibility of alkene, electric conductivity, double layer capacitor characteristic and two-dimentional active material specific capacitance high, assigns
Give the comprehensive electrochemical that combination electrode material is excellent.Thus obtained graphene-based flexible combination electrode material, not only has
There is high conduction performance, and film strength is higher, the characteristics of with self-supporting.Additionally, graphene-based flexible compound electric of the present invention
Pole material does not need extra collector, binding agent, conductive agent, can effective reduces cost, it is and easily prepared.
The preparation method of the graphene-based flexible combination electrode material that the present invention is provided, is lived by two-dimensional graphene and two dimension
Property material laminated assembling technology form the layer structure of alternately laminated arrangement, both is constituted an organic whole, play two
The synergy of person, while comprehensively utilizing the good flexibility of Graphene, electric conductivity, double layer capacitor characteristic and two dimension activity material
The pseudocapacitors characteristic of material specific capacitance high, assigns combination electrode material excellent comprehensive electrochemical.Thus obtained stone
Mertenyl flexible composite electrode material, not only with high conduction performance, and film strength is higher, the characteristics of with self-supporting.
It is the inventive method process is simple, easily operated.The application of the graphene-based flexible combination electrode material that the present invention is provided, can be very
Regulate and control the combination property of energy device well, and obtain the energy device of lightweight.
Brief description of the drawings
Fig. 1 is the electron microscope of the nickel hydroxide that the embodiment of the present invention 1 is prepared；
Fig. 2 is the electron microscope of nickel hydroxide/Graphene flexible composite electrode material that the embodiment of the present invention 1 is provided；
Fig. 3 is the bending pictorial diagram of nickel hydroxide/Graphene flexible composite electrode material that the embodiment of the present invention 1 is provided；
Fig. 4 is the nickel hydroxide/Graphene flexible composite electrode material of the offer of the embodiment of the present invention 1 in 20mVs-1Sweep under speed
Cyclic voltammetric contrast curve.
Specific embodiment
In order that the technical problem to be solved in the present invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention, is not intended to limit the present invention.
The embodiment of the invention provides a kind of graphene-based flexible combination electrode material, the graphene-based flexible compound electric
Pole material is the fexible film that Graphene and active material are made, wherein, the active material is the two dimension activity of nano-sheet
Material, and the Graphene and the alternately laminated arrangement of two-dimentional active material.
Specifically, in the embodiment of the present invention, the active material and the Graphene are two-dimensional material such that it is able to pass through
Alternately laminated arrangement is crossed, the controllable fexible film of thickness is formed.The graphene-based flexible combination electrode material structure being consequently formed
Stabilization, intensity are higher, inherently with independent self-supporting ability, therefore, there is no need to flexible carrier；And by alternately laminated arrangement
The composite of formation, is favorably improved the chemical property and stability of electrode material, and its electric conductivity is excellent, it is not required that
It is extra that collector is set.
Preferably, the two-dimentional active material thickness is less than 10nm.Preferably, the thickness of the Graphene is less than 10nm
(Graphene for single or multiple lift two-dimensional graphene, and Graphene thickness in 10nm).By the two dimension activity material
The thickness control of material and the Graphene is within the range, it is ensured that larger specific surface area, so as to improve material electrochemical
Performance；Meanwhile, prepared composite film electrode is flexible more preferably.If the thickness of the two-dimentional active material and/or the Graphene
Thickness is spent, specific surface area diminishes, the combination electrode material chemical property for obtaining is deteriorated, or even the electrode material of flexibility cannot be obtained
Material.Additionally, being also unfavorable for forming dispersed microcosmic stepped construction, chemical property is further influenceed.Certainly, the two dimension
The thickness of active material and the Graphene is the smaller the better, and its specific surface area is bigger, and chemical property is better.Further preferably
, the two-dimentional active material thickness is less than 5nm, and/or the thickness of the Graphene is less than 5nm.
In principle, the mass ratio of the Graphene and the two-dimentional active material is 1:(Graphene and two dimension between (0-1)
The mass ratio of active material is not 1:0) electrode composite material can be just obtained, but, if the Graphene is very few, THIN COMPOSITE membrane material
Material electric conductivity is poor, and mechanical performance is also poor；If the Graphene is excessive, the two-dimentional active material is very few, then the two dimension
The performance of active material cannot be brought into play.In order to obtain having the compound of preferable flexibility, electric conductivity and pseudocapacitors characteristic concurrently
Electrode material, it is preferred that the mass ratio of the two-dimentional active material and the Graphene is 1:1-1:10.As specific preferred real
Apply example, the mass ratio of the two-dimentional active material and the Graphene is 1:3, so as to obtain optimal two-dimentional active material and stone
Black alkene uniformly overlaps scattered stabilization microstructure, obtains chemical property and flexible optimal combination electrode material.
Specifically, during the two-dimentional active material is two-dimentional transition metal hydroxide, two-dimentional transition metal oxide
It is at least one.Further, the two-dimentional active material is at least in two-dimensional metallic hydroxide, two-dimensional metallic oxide
Kind；The two-dimensional metallic hydroxide includes two-dimentional monometallic hydroxide, two-dimentional double-metal hydroxide, the two-dimensional metallic
Oxide includes two-dimentional single metal oxides, two-dimentional bimetallic oxide；Wherein, the two-dimentional monometallic hydroxide includes two
Dimension nickel hydroxide, two-dimentional cobalt hydroxide；The two-dimentional single metal oxides include two dimensional oxidation nickel, two-dimentional cobaltosic oxide, when
So, not limited to this.
It should be appreciated that in the embodiment of the present invention, combination electrode material can be prepared using various two-dimentional active materials simultaneously.
When combination electrode material is prepared using various two-dimentional active materials, the ratio of various two-dimentional active materials is not limited strictly,
Can arbitrarily add according to actual needs.
It is different from the electrode of deposition or supported active material (including binding agent, conductive agent) on flexible substrate, the present invention
The graphene-based flexible combination electrode material that embodiment is provided, it is not necessary to flexible substrate, it is not required that binding agent and conductive agent, it is single
The grapheme material of pure dependence active material and electric conductivity, you can obtain the thin-film electrode material of self-supporting.Specifically, this hair
The graphene-based flexible combination electrode material that bright embodiment is provided, by the layer assembly of two-dimensional graphene and two-dimentional active material
Technology forms the layer structure of alternately laminated arrangement, both is constituted an organic whole, plays the synergy of the two, while
Comprehensively utilize the counterfeit of the good flexibility of Graphene, electric conductivity, double layer capacitor characteristic and two-dimentional active material specific capacitance high
Capacitor specific characteristics, assign combination electrode material excellent comprehensive electrochemical.Thus obtained graphene-based flexible compound electric
Pole material, not only with high conduction performance, and film strength is higher, the characteristics of with self-supporting.Additionally, the embodiment of the present invention
Graphene-based flexible combination electrode material does not need extra collector, binding agent, conductive agent, can effective reduces cost, and
It is easily prepared.
Graphene-based flexible combination electrode material provided in an embodiment of the present invention, can be prepared by following methods.
Accordingly, a kind of preparation method of graphene-based flexible combination electrode material is the embodiment of the invention provides, including
Following steps：
S01., Graphene and two-dimentional active material are provided respectively；
S02. the Graphene and the two-dimentional active material dispersion are formed into mixed dispersion liquid in a solvent；
S03. the mixed dispersion liquid is carried out into layer assembly treatment, obtains graphene-based flexible combination electrode material；Or
After the mixed dispersion liquid is carried out into layer assembly treatment, it is heat-treated, is obtained graphene-based flexible combination electrode material.
In above-mentioned steps S01, the Graphene is two-dimensional graphene, and the Graphene is prepared using electrochemical stripping and obtained
Obtain, or the preparation method of the Graphene is：Graphene oxide is prepared by chemical oxidation stripping, the graphene oxide is entered
Row electronation or thermal reduction, obtain Graphene.
The two-dimentional active material can be prepared by routine techniques, for example, directly chemical method can synthesize or block
Active material such as hydroxide is stripped to be prepared.
In above-mentioned steps S02, the Graphene and the two-dimentional active material dispersion are formed uniform in organic solvent
Scattered mixed dispersion liquid.Wherein, for the organic solvent of the embodiment of the present invention, being being capable of fine dispersion Graphene and two dimension work
The organic solvent of property material, it has larger surface tension larger, is conducive to the dispersed of material, and then by group layer by layer
Dress obtains microcosmic layer structure, is particularly preferred as DMF, NMP, isopropanol, but not limited to this.
The embodiment of the present invention configures mixed dispersion liquid, can directly disperse the Graphene and the two-dimentional active material
In organic solvent, sonicated preparation；Graphene dispersing solution and two-dimentional active material dispersion can also individually be configured
Liquid, it is then that both ultrasonic mixings are uniform, prepare dispersed mixed dispersion liquid.
In above-mentioned steps S03, including two kinds of implementation situations.
As the first implementation situation, the mixed dispersion liquid is carried out into layer assembly treatment, obtain Graphene/hydroxide
Thing flexible composite electrode material.
Wherein, prepared by the mode of the layer assembly treatment mode such as including vacuum filtration, spin coating, spraying, coating, dip-coating
Laminated film.Processed by suction filtration, spin coating etc., two-dimensional graphene and two-dimentional active material align assembling, form stratiform and hand over
The film for replacing.Processed by layer assembly, dispersed microstructure can be kept, be conducive to the raising of electric property, together
When, it is also beneficial to keep the flexibility of laminated film.
As second implementation situation, after the mixed dispersion liquid is carried out into layer assembly treatment, it is heat-treated, is obtained
Graphene/oxide flexible composite electrode material.
Wherein, prepared by the mode of the layer assembly treatment mode such as including vacuum filtration, spin coating, spraying, coating, dip-coating
Laminated film.Processed by suction filtration, spin coating etc., two-dimensional graphene and two-dimentional active material align assembling, form stratiform and hand over
The film for replacing.Processed by layer assembly, dispersed microstructure can be kept, be conducive to the raising of electric property, together
When, it is also beneficial to keep the flexibility of laminated film.
Further, through Overheating Treatment, two-dimentional hydroxide can be changed into derived material, such as two dimensional oxidation thing, from
And expanded application scope.Preferably, the temperature of the heat treatment is 300-600 DEG C, and the time is 1.5-2.5h, specific heat treatment
Condition is different because of specific two dimension active material.
The embodiment of the present invention is made after by changing the content of Graphene and two-dimentional active material both being controlled to mix
The thickness of standby combination electrode material film, it is usually preferred to, the thickness of combination electrode material film can control several microns
To hundreds of microns of thickness.
It is understood that flexible composite electrode material can assemble one or more different two-dimentional active material.When
When flexible composite electrode material introduces various different two-dimentional active materials, various different two-dimentional active materials can by layer according to
It is secondary to be assembled with the Graphene；Or after multiple different two-dimentional active material mixing, by mixed two dimension activity material
Material is assembled with the Graphene.
The preparation method of graphene-based flexible combination electrode material provided in an embodiment of the present invention, by two-dimensional graphene and
The laminated assembling technology of two-dimentional active material forms the layer structure of alternately laminated arrangement, both is constituted an organic whole,
The synergy of the two is played, while comprehensively utilizing the good flexibility of Graphene, electric conductivity, double layer capacitor characteristic and two dimension
The pseudocapacitors characteristic of active material specific capacitance high, assigns combination electrode material excellent comprehensive electrochemical.Thus
The graphene-based flexible combination electrode material for arriving, not only with high conduction performance, and film strength is higher, with self-supporting
Feature.Additionally, the preparation method process is simple of embodiment of the present invention graphene-based flexible combination electrode material, easily operated.
And, the embodiment of the present invention additionally provides a kind of above-mentioned graphene-based flexible combination electrode material in battery, super
The application of level capacitor area.
As a specific embodiment, using the graphene-based flexible combination electrode material as battery (such as lithium-ion electric
Pond etc.) electrode.
As another specific embodiment, by the graphene-based flexible combination electrode material and solid electrolyte, assembling
Into the ultracapacitor of symmetrically or non-symmetrically sandwich structure.
The application of graphene-based flexible combination electrode material provided in an embodiment of the present invention, can well regulate and control energy device
The combination property of part, and obtain the energy device of lightweight.
Illustrated with reference to specific embodiment.
Embodiment 1
A kind of preparation method of graphene-based flexible combination electrode material, comprises the following steps：
S11., Graphene and two-dimentional active material are provided respectively.
Electrochemical stripping graphite rod prepares Graphene：Using high purity graphite rod as working electrode, platinized platinum is to electrode, 0.1M
Na2SO4Aqueous solution is electrolyte, and operating voltage is 10V, and after peeling off completely, few layer graphene is collected in washing, ultrasound, centrifugation；
And in dispersing graphene in organic solvent DMF, solubility is 0.5mg/mL.
Chemical method prepares nickel hydroxide nano piece：1mL ammoniacal liquor (38%) is dissolved in 50mL water, 50mL is gradually added drop-wise to
0.04M NiCl2·6H2In O aqueous solutions, drying is collected after stirring 12h at 60 DEG C；And nickel hydroxide nano piece is scattered in has
In machine solvent DMF, solubility is 0.5mg/mL.The electron microscope of thus obtained nickel hydroxide is as shown in Figure 1.
S12. it is 1 by mass ratio:3 two-dimentional active material and graphene dispersion forms mixing dispersion in organic solvent
Liquid；
S13. the mixed dispersion liquid is carried out into vacuum filtration, layer assembly nickel hydroxide and Graphene film forming, 50 DEG C are done
After dry, you can obtain nickel hydroxide/graphene combination electrode material.
The electron microscope of the nickel hydroxide that embodiment 1 is prepared/Graphene flexible composite electrode material is as shown in Fig. 2 curved
Thing is reckoned the actual amount after a discount as shown in figure 3, the nickel hydroxide that will be obtained/Graphene flexible composite electrode material is in 20mVs-1Sweep the circulation volt under speed
Peace correlation curve is as shown in Figure 4.The graphene film of embodiment 1, two-dimentional nickel hydroxide and the flexible compound electricity for preparing
The electrical conductivity of pole material is as shown in table 1.
Table 1
Embodiment 2
A kind of preparation method of graphene-based flexible combination electrode material, prepares nickel hydroxide/Graphene multiple in embodiment 1
On composite electrode material foundation, the nickel hydroxide/graphene combination electrode material is carried out into situ heat treatment, under an ar atmosphere,
5 DEG C/min of heating rate, to 400 DEG C of insulation 2h, natural cooling obtains nickel oxide/graphene combination electrode material.Embodiment 2
Graphene film, nickel oxide and the flexible composite electrode material for preparing electrical conductivity it is as shown in table 2.
Table 2
Embodiment 3
A kind of preparation method of graphene-based flexible combination electrode material, comprises the following steps：
S31., Graphene and two-dimentional active material are provided respectively.
Electrochemical stripping graphite rod prepares Graphene：Used as electrode material, platinized platinum is to electrode, 0.1M to high purity graphite rod
(NH4)2SO4Aqueous solution is electrolyte, and operating voltage is 10V, and after peeling off completely, few layer graphite is collected in washing, ultrasound, centrifugation
Alkene.
Liquid phase ultrasound peels off nickel hydroxide particle and prepares nickel hydroxide nano piece：10mg/mL is configured in organic solvent NMP
Nickel hydroxide particle concentration, ultrasonic 2h, centrifugation collects few layer nickel hydroxide nano piece.
S32. disperse graphene in organic solvent NMP, solubility is 0.5mg/mL；Nickel hydroxide nano piece is scattered in
In organic solvent NMP, solubility is 0.5mg/mL.Adjustment nickel hydroxide is 1 with the mass ratio of Graphene:3, two kinds of dispersion liquids are mixed
Synthesis mixed dispersion liquid.
S33. the mixed dispersion liquid is carried out into vacuum filtration, layer assembly nickel hydroxide and Graphene film forming, 50 DEG C are done
After dry, you can obtain nickel hydroxide/graphene combination electrode material.
The conductance of the graphene film of embodiment 3, two-dimentional nickel hydroxide and the flexible composite electrode material for preparing
Rate is as shown in table 3.
Table 3
Embodiment 4
A kind of preparation method of graphene-based flexible combination electrode material, comprises the following steps：
S41., Graphene and two-dimentional active material are provided respectively.
Electrochemical stripping graphite rod prepares Graphene：Using high purity graphite rod as working electrode, platinized platinum is to electrode, 0.1M
Na2SO4Aqueous solution is electrolyte, and operating voltage is 10V, and after peeling off completely, few layer graphene is collected in washing, ultrasound, centrifugation.
Chemical method prepares cobalt hydroxide nanometer sheet：1mL ammoniacal liquor (38%) is dissolved in 50mL water, 50mL is gradually added drop-wise to
0.04M CoCl2·6H2In O aqueous solutions, drying is collected after 60 DEG C of stirring 12h.
S42. disperse graphene in organic solvent DMF, solubility is 0.5mg/mL；Cobalt hydroxide nanometer sheet is scattered in
In organic solvent DMF, solubility is 0.5mg/mL.Adjustment cobalt hydroxide is 1 with the mass ratio of Graphene:3, two kinds of dispersion liquids are mixed
Dispersion 2min is closed, mixed dispersion liquid is obtained.
S43. the mixed dispersion liquid is carried out into vacuum filtration, layer assembly cobalt hydroxide and Graphene film forming, 50 DEG C are done
After dry, you can obtain cobalt hydroxide/graphene combination electrode material.
The conductance of the graphene film of embodiment 4, two-dimentional cobalt hydroxide and the flexible composite electrode material for preparing
Rate is as shown in table 4.
Table 4
Embodiment 5
A kind of preparation method of graphene-based flexible combination electrode material, cobalt hydroxide/graphite is prepared in above-described embodiment 4
On the basis of alkene combination electrode material, the cobalt hydroxide/graphene combination electrode material is carried out into situ heat treatment, in Ar atmosphere
Under, 5 DEG C/min of heating rate, to 300 DEG C of insulation 2h, natural cooling obtains cobalt oxide/graphene combination electrode material.
The electrical conductivity of the graphene film, cobaltosic oxide and the flexible composite electrode material for preparing of embodiment 5
As shown in table 5.
Table 5
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of graphene-based flexible combination electrode material, it is characterised in that the graphene-based flexible combination electrode material is
The fexible film that Graphene and active material are made, wherein, the active material is the two-dimentional active material of nano-sheet, and institute
State Graphene and the alternately laminated arrangement of two-dimentional active material.
2. graphene-based flexible combination electrode material as claimed in claim 1, it is characterised in that the two-dimentional active material is thick
Degree is less than 10nm；And/or
The thickness of the Graphene is less than 10nm.
3. graphene-based flexible combination electrode material as claimed in claim 1, it is characterised in that the two-dimentional active material and
The mass ratio of the Graphene is 1:1-1:10.
4. graphene-based flexible combination electrode material as claimed in claim 1, it is characterised in that the Graphene is using electrification
Stripping is learned to prepare, or
The preparation method of the Graphene is：Graphene oxide is prepared by chemical oxidation stripping, the graphene oxide is entered
Row electronation or thermal reduction, obtain Graphene.
5. the graphene-based flexible combination electrode material as described in claim 1-4 is any, it is characterised in that the two dimension activity
Material is at least one in two-dimentional transition metal hydroxide, two-dimentional transition metal oxide.
6. graphene-based flexible combination electrode material as claimed in claim 5, it is characterised in that the two-dimentional active material is
At least one in two-dimensional metallic hydroxide, two-dimensional metallic oxide；The two-dimensional metallic hydroxide includes two dimension Dan Jin
Category hydroxide, two-dimentional double-metal hydroxide, the two-dimensional metallic oxide include the double gold of two-dimentional single metal oxides, two dimension
Category oxide；Wherein, the two-dimentional monometallic hydroxide includes two-dimentional nickel hydroxide, two-dimentional cobalt hydroxide；The two dimension is single
Metal oxide includes two dimensional oxidation nickel, two-dimentional cobaltosic oxide.
7. a kind of preparation method of graphene-based flexible combination electrode material, comprises the following steps：
Graphene and two-dimentional active material are provided respectively；
The Graphene and the two-dimentional active material dispersion are formed into mixed dispersion liquid in a solvent；
The mixed dispersion liquid is carried out into layer assembly treatment, graphene-based flexible combination electrode material is obtained；Or will be described mixed
After conjunction dispersion liquid carries out layer assembly treatment, it is heat-treated, is obtained graphene-based flexible combination electrode material.
8. the preparation method of graphene-based flexible combination electrode material as claimed in claim 7, it is characterised in that it is described layer by layer
The mode for assembling treatment includes vacuum filtration, spin coating, spraying, coating, dip-coating.
9. the preparation method of graphene-based flexible combination electrode material as claimed in claim 7 or 8, it is characterised in that described
The temperature of heat treatment is 300-600 DEG C, and the time is 1.5-2.5h.
10. a kind of graphene-based flexible combination electrode material as described in claim 1-6 is any is led in battery, ultracapacitor
The application in domain.
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| CN108390064A (en) * | 2018-01-19 | 2018-08-10 | 同济大学 | A kind of graphene-based flexible self-supporting mixed gel electrode and preparation method thereof |
| CN108899473A (en) * | 2018-06-14 | 2018-11-27 | 湘潭大学 | A kind of high-performance flexible cathode plate for lithium secondary battery and preparation method thereof |
| CN109686581A (en) * | 2019-01-11 | 2019-04-26 | 南昌航空大学 | A kind of cobalt hydroxide/rGO/ nickel hydroxide sandwich-like flexible electrode material and preparation method thereof |
| CN110299523A (en) * | 2019-06-27 | 2019-10-01 | 山东大学 | A kind of self-supporting two dimension MXene@ZnMn2O4The preparation and its application of combination electrode material |
| CN110517898A (en) * | 2019-08-14 | 2019-11-29 | 上海应用技术大学 | The preparation method of the graphene@CoAl-LDH combination electrode material of polyaniline-coated |
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| CN108390064A (en) * | 2018-01-19 | 2018-08-10 | 同济大学 | A kind of graphene-based flexible self-supporting mixed gel electrode and preparation method thereof |
| CN108899473A (en) * | 2018-06-14 | 2018-11-27 | 湘潭大学 | A kind of high-performance flexible cathode plate for lithium secondary battery and preparation method thereof |
| CN108899473B (en) * | 2018-06-14 | 2021-08-24 | 湘潭大学 | High-performance flexible lithium secondary battery positive electrode and preparation method thereof |
| CN109686581A (en) * | 2019-01-11 | 2019-04-26 | 南昌航空大学 | A kind of cobalt hydroxide/rGO/ nickel hydroxide sandwich-like flexible electrode material and preparation method thereof |
| CN112043868A (en) * | 2019-06-05 | 2020-12-08 | 中国科学院金属研究所 | Ceramic/resin composite material with micro-oriented structure for false tooth and preparation method thereof |
| CN110299523A (en) * | 2019-06-27 | 2019-10-01 | 山东大学 | A kind of self-supporting two dimension MXene@ZnMn2O4The preparation and its application of combination electrode material |
| CN110517898A (en) * | 2019-08-14 | 2019-11-29 | 上海应用技术大学 | The preparation method of the graphene@CoAl-LDH combination electrode material of polyaniline-coated |
| CN111348689A (en) * | 2020-02-12 | 2020-06-30 | 杭州电子科技大学 | A kind of Ni (OH)2Graphene composite material and preparation method thereof |
| CN111348689B (en) * | 2020-02-12 | 2022-06-07 | 杭州电子科技大学 | A kind of Ni (OH)2Graphene composite material and preparation method thereof |
| CN112117436A (en) * | 2020-09-24 | 2020-12-22 | 北京化工大学 | Novel two-dimensional carbon composite flexible electrode of sodium ion battery and preparation method thereof |
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