CN106067383B - A kind of pseudocapacitors anode and preparation method thereof based on cobalt sulfide nickel - Google Patents
A kind of pseudocapacitors anode and preparation method thereof based on cobalt sulfide nickel Download PDFInfo
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- CN106067383B CN106067383B CN201610708335.8A CN201610708335A CN106067383B CN 106067383 B CN106067383 B CN 106067383B CN 201610708335 A CN201610708335 A CN 201610708335A CN 106067383 B CN106067383 B CN 106067383B
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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
The invention discloses a kind of pseudocapacitors anodes and preparation method thereof based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure, it is described anode include foam nickel base 1, in foam nickel base 1 the cobalt sulfide nickel nano film 2 of array distribution, linking in 2 two sides of cobalt sulfide nickel nano film growth array distribution cobalt sulfide nickel blade 3, for the cobalt sulfide nickel nano film 2 perpendicular to foam nickel base 1, the cobalt sulfide nickel blade 3 is in 0~90 degree along 1 opposite direction of foam nickel base with cobalt sulfide nickel nano film 2.Anode structure cobalt sulfide nickel nano film array disclosed by the invention is grown directly upon in highly conductive foam nickel base, is made it have very high electron mobility, is advantageously implemented fast charging and discharging；Meanwhile on nano-chip arrays continue growth in situ cobalt sulfide nickel blade, can not only increase electrode using active surface, improve its energy density, and expand the speed of action of active material and electrolyte.
Description
Technical field
The invention belongs to electrode fields, and in particular to a kind of counterfeit electricity based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure
Capacitor positive electrode and preparation method thereof.
Background technique
Worldwide all suffers from serious energy crisis at present, and to solve this problem, researcher develops greatly
Measure the energy storage device based on electrochemical storage.Supercapacitor is because of its high power density, fast charging and discharging and stable circulation
The characteristics of property, not only in consumer electrical product field, but also in new-energy automobile, solar energy power generation, smart grid, electricity
The fields such as power, railway, communication, national defence, which all exist, to be widely applied.Not only in consumer electrical product field, but also in new energy
The fields such as automobile, solar energy power generation, smart grid, electric power, railway, communication, national defence, which all exist, to be widely applied.Electrode material
The exploitation of material is the Main way of current supercapacitor technologies research, and electrode material charge storage directly determines super
The capacitance of capacitor.It is compared to traditional carbon material class electrode material, the electrodes material such as transition metal oxide or hydroxide
Material has higher charge storage.However, in practical applications, it has been found that, due to transition metal oxide or hydrogen-oxygen
The electric conductivity that the electrode material of compound has its low, cyclical stability is poor, and energy density is small, due to the presence of these defects, very
Hardly possible meets higher application demand in reality.Therefore transient metal sulfide is as a kind of high conductivity, the electrode material of high capacity
Material has biggish application prospect.
The working principle of fake capacitance is obtained by the redox reaction that electrolyte participates in surface of active material Rapid reversible
The storage compared with the higher charge of electric double layer super capacitor and releasability are obtained, since quick faraday's reaction only occurs in activity
Material surface, therefore the electric conductivity of increase electrode, raising material and the effective contact area of electrolyte, increase medium and charge
Rate is transported, the ability that material efficiently stores charge can be improved, therefore higher quality specific capacity can be obtained.
Document [J.Xiao, Nano Lett., 2014,14,831] has been reported based on nickel cobalt hydroxide@nickel cobalt sulfide
The fake capacitance anode of nanometer tube composite materials, this article grow nickel cobalt carbonic acid hydroxide by hydro-thermal method in foam nickel base
Precursor obtains nickel cobalt sulfide nano-tube after high temperature vulcanized, acid etch, then by electric deposition nickel cobalt hydroxide, final to prepare
Nickel cobalt hydroxide nano piece@nickel cobalt sulfide nano-tube composite material out, in view of the high conductivity of cobalt sulfide nickel, its nanotube
Array can provide electronics quickly conduct required channel, simultaneously nickel cobalt hydroxide further increase as high capacity electroactive material
Add the face quality of active material.But this core-shell structure being made of nickel cobalt hydroxide and nickel cobalt sulfide nano-tube, it closes
High temperature vulcanized process that is various at step and needing 400 DEG C, higher cost；Further, since electric conductivity is poor in outside deposition
Nickel cobalt hydroxide, the electric conductivity and ionic mobility of electrode entirety are lowered, so as to cause poor cyclical stability
And the service life, do not have apparent industrialization and practical value.
Document [L.Mei, Nano Energy, 2014,3,36] is reporting the fake capacitance based on mushroom cobalt sulfide nickel just
Pole, the mushroom classification which directly prepares nanowire by hydro-thermal method in foam nickel base and nanometer sheet collectively forms
Nanostructure, in view of the high conductivity of cobalt sulfide nickel, its nano-wire array can provide electronics quickly conduct required channel and its
The nanometer chip architecture at top can play the role of increasing surface area and protect structural intergrity.But this mushroom cobalt sulfide nickel
Binding force between the nanometer sheet and nano-wire array on classification nanostructure surface is weaker, this causes close in increase charging and discharging currents
The performance of capacitor declines rapidly (i.e. poor high rate performance) when spending, and cyclical stability and service life are shorter, do not have
Apparent industrialization and practical value.
Document [R.Zou, Sci.Rep., 2015,5,7862.], which was reported, synthesizes cobalt sulfide nickel nano wire using hydro-thermal method,
Then continue hydrothermal growth on its surface and obtain nickel cobalt oxide nano wire, nickel cobalt oxide-cobalt sulfide nickel tree is obtained after calcining
Dendritic composite construction, by using cobalt sulfide nickel nano wire as electron-transport channel and active material, in addition nickel cobalt oxide nanometer
Line active material can be further improved the amount of active material, furthermore this by active sulfide nano wire and oxidate nano
The dendritic structure of line composition, is conducive to the migration of ion, has high face amount as fake capacitance anode.But this skill
The art nickel cobalt oxide poor by electric conductivity in outside deposition, reduces the electric conductivity and ionic mobility of electrode entirety, makes
It is poor at the high rate performance of electrode, it cannot achieve high power charging-discharging, hinder the raising of performance, and its complicated preparation work
Skill results in higher production cost, does not have practical value.
In conclusion a kind of transient metal sulfide as a kind of high conductivity, the electrode material of high capacity exploitation still
It is the research emphasis of those skilled in the art.
Summary of the invention
In view of this, one of the objects of the present invention is to provide one kind to be based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure
Pseudocapacitors anodes, the second object of the present invention is to provide a kind of based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure
The preparation method of pseudocapacitors anode.
In order to achieve the above objectives, the present invention specifically provides the following technical solution:
A kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure, the anode includes nickel foam
Substrate 1, in foam nickel base 1 the cobalt sulfide nickel nano film 2 of array distribution, linking in 2 two sides of cobalt sulfide nickel nano film
In the cobalt sulfide nickel blade 3 that array growth is distributed, the cobalt sulfide nickel nano film 2 is perpendicular to foam nickel base 1, the cobalt sulfide
Nickel blade (3) is in 0~90 degree along foam nickel base (1) opposite direction with cobalt sulfide nickel nano film (2).
Preferably, the foam nickel base (1) is in cellular, pore-size distribution in 0.2~0.4mm, surface density is 280 ±
25g/m2, with a thickness of 1.6mm.
Preferably, the cobalt sulfide nickel nano film (2) is with a thickness of 30-50nm, and the cobalt sulfide nickel blade (3) is with a thickness of 5-
10nm。
2, the preparation method of a kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure, packet
Include following steps:
1) nickel foam is impregnated with concentrated hydrochloric acid, then removes the oxygen of foam nickel surface with acetone, second alcohol and water and washing respectively
Compound and grease；
2) Co (NO is weighed3)2·6H2O、Ni(NO3)2·6H2O、Na2SO4It is added in the water containing ethyl alcohol, mixed liquor is made；
3) mixed liquor in step 2) is added to contain in the water heating kettle through the processed nickel foam of step 1) and is reacted,
The nickel foam containing cobalt hydroxide nickel nano film is made, the foam containing cobalt hydroxide nickel nano film as obtained by vulcanization processing
Nickel makes cobalt hydroxide nickel nano film be changed into cobalt sulfide nickel nano film, and the cobalt sulfide nickel nano film array distribution is in nickel foam
In substrate, the cobalt sulfide nickel nano film is perpendicular to foam nickel base:
4) continue growth in situ cobalt sulfide nickel blade directly on nano-chip arrays, the cobalt sulfide nickel blade is raw in array
In cobalt sulfide nickel nano film two sides, the cobalt sulfide nickel blade is in Ni-based along foam with cobalt sulfide nickel nano film for long distribution linking
Bottom opposite direction is in 0~90 degree.
Preferably, in step 2), Ni (NO3)2·6H2O and Co (NO3)2·6H2The molar ratio of O is 0.1:1~1:0.1；Ni
(NO3)2·6H2O and Co (NO3)2·6H2The mixture and Na of O2SO4Molar ratio be 1:0.5~1:4, the second alcohol and water
Volume ratio is 0.1~1:10.
Preferably, the step 3) vulcanization is specially and the nickel foam containing cobalt hydroxide nickel nano film is placed in containing sulphur
It is reacted in water heating kettle in the aqueous solution of agent.
Preferably, the vulcanizing agent is one of vulcanized sodium, thiocarbamide, thioacetamide.
The beneficial effects of the present invention are: the present invention provides one kind to be based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure
Pseudocapacitors anode and preparation method thereof, anode structure cobalt sulfide nickel nano film array disclosed by the invention is grown directly upon height
In conductive foam nickel base, very high electron mobility is made it have, fast charging and discharging is advantageously implemented；Meanwhile in nanometer
On chip arrays continue growth in situ cobalt sulfide nickel blade, can not only increase electrode using active surface, improve its energy
Density, and expand the speed of action of active material and electrolyte；Moreover, this surface, which has vaned multilevel structure, increases sky
Between utilization rate, electrode active material mass surface density；Furthermore the multilevel structure of this direct one-step method preparation, core nanometer sheet with
Shell nanometer impeller structure is same structure between each other, and phase interface is not present, forms highly stable structure, and final obtain has both height
Specific discharge capacity, area specific capacity and good high rate performance and cyclical stability pseudocapacitors anode.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing:
Fig. 1 shows the pseudocapacitors anode schematic diagrames based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure；
Fig. 2 indicates to be located at the cobalt sulfide nickel nano film of rectangular array distribution in foam nickel base 1；
The partial enlarged view of pseudocapacitors anode of Fig. 3 expression based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure；
Fig. 4 indicates the electron-microscope scanning figure of the cobalt sulfide nickel nucleocapsid multi-level nano-structure of different leaf density；
Fig. 5 indicates the microstructure of cobalt sulfide nickel nucleocapsid multi-level nano-structure under a scanning electron microscope；
Fig. 6 indicates that cobalt sulfide nickel nano film-leaf nucleocapsid three-dimensional multistage structure electrode cyclic voltammetric and charge and discharge electrical property are surveyed
Try curve；
Fig. 7 indicates cobalt sulfide nickel nano film-specific capacity of the leaf nucleocapsid three-dimensional multistage structure electrode under different current densities.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.Specific item is not specified in embodiment
The experimental method of part, usually according to conventional conditions or according to the manufacturer's recommendations.
A kind of pseudocapacitors anode structure based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure of Examples 1 to 4 is such as
Shown in Fig. 1, Fig. 2, Fig. 3: wherein Fig. 1 shows the pseudocapacitors anode signals based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure
Figure；Wherein Fig. 2 indicates to be located at the cobalt sulfide nickel nano film 2 in foam nickel base 1 in array distribution, and wherein Fig. 3 indicates to be based on sulphur
Change cobalt nickel nucleocapsid three-dimensional multistage nanostructure pseudocapacitors anode partial enlarged view, it is described anode including foam nickel base 1,
In foam nickel base 1 in array distribution cobalt sulfide nickel nano film 2, linking in 2 two sides of cobalt sulfide nickel nano film be in battle array
The cobalt sulfide nickel blade 3 of column distribution, the cobalt sulfide nickel nano film 2 is perpendicular to foam nickel base 1, the cobalt sulfide nickel blade 3
With cobalt sulfide nickel nano film 2 along 1 opposite direction of foam nickel base in 0~90 degree.
Embodiment 1
A kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure of the present embodiment presses such as lower section
Method is made:
1) nickel foam is impregnated with concentrated hydrochloric acid, then removes the oxygen of foam nickel surface with acetone, second alcohol and water and washing respectively
Compound and grease；
2) 1mol Co (NO is weighed respectively3)2·6H2O、0.1mol Ni(NO3)2·6H2O、4.4mol Na2SO4Addition contains
Have in the water of ethyl alcohol, mixed liquor is made, the volume ratio of second alcohol and water is 1:10.
3) mixed liquor in step 2) is added to contain in the water heating kettle through the processed nickel foam of step 1) and is reacted,
The nickel foam containing cobalt hydroxide nickel nano film is made,
4) nickel foam containing cobalt hydroxide nickel nano film will be made in step (3) to be placed in sodium sulfide solution in water heating kettle
In reacted, so that cobalt hydroxide nickel nano film is changed into cobalt sulfide nickel nano film, be made the bubble containing cobalt sulfide nickel nano film
Foam nickel, the cobalt sulfide nickel nano film rectangular array are distributed in foam nickel base:
5) continue growth in situ cobalt sulfide nickel blade directly on nano-chip arrays, the cobalt sulfide nickel blade is in rectangle battle array
In cobalt sulfide nickel nano film two sides, the cobalt sulfide nickel blade and cobalt sulfide nickel nano film are in 0-90 ° for column distribution linking.
Embodiment 2
A kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure of the present embodiment presses such as lower section
Method is made:
1) nickel foam is impregnated with concentrated hydrochloric acid, then removes the oxygen of foam nickel surface with acetone, second alcohol and water and washing respectively
Compound and grease；
2) 1mol Co (NO is weighed respectively3)2·6H2O、1mol Ni(NO3)2·6H2O、4mol Na2SO4Addition contains second
In the water of alcohol, mixed liquor is made, the volume ratio of second alcohol and water is 0.5:10.
3) mixed liquor in step 2) is added to contain in the water heating kettle through the processed nickel foam of step 1) and is reacted,
The nickel foam containing cobalt hydroxide nickel nano film is made,
4) nickel foam containing cobalt hydroxide nickel nano film will be made in step (3) to be placed in thiourea solution in water heating kettle
It is reacted, cobalt hydroxide nickel nano film is made to be changed into cobalt sulfide nickel nano film, the foam containing cobalt sulfide nickel nano film is made
Nickel, the cobalt sulfide nickel nano film rectangular array are distributed in foam nickel base:
5) continue growth in situ cobalt sulfide nickel blade directly on nano-chip arrays, the cobalt sulfide nickel blade is in rectangle battle array
In cobalt sulfide nickel nano film two sides, the cobalt sulfide nickel blade and cobalt sulfide nickel nano film are in 0-90 ° for column distribution linking.
Embodiment 3
A kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure of the present embodiment presses such as lower section
Method is made:
1) nickel foam is impregnated with concentrated hydrochloric acid, then removes the oxygen of foam nickel surface with acetone, second alcohol and water and washing respectively
Compound and grease；
2) 0.2mol Co (NO is weighed respectively3)2·6H2O、1mol Ni(NO3)2·6H2O、1.2mol Na2SO4Addition contains
Have in the water of ethyl alcohol, mixed liquor is made, the volume ratio of second alcohol and water is 0.8:10.
3) mixed liquor in step 2) is added to contain in the water heating kettle through the processed nickel foam of step 1) and is reacted,
The nickel foam containing cobalt hydroxide nickel nano film is made,
4) nickel foam containing cobalt hydroxide nickel nano film will be made in step (3) to be placed in thiourea solution in water heating kettle
It is reacted, cobalt hydroxide nickel nano film is made to be changed into cobalt sulfide nickel nano film, the foam containing cobalt sulfide nickel nano film is made
Nickel, the cobalt sulfide nickel nano film rectangular array are distributed in foam nickel base；
5) continue cobalt sulfide nickel blade rectangular array described in growth in situ cobalt sulfide nickel blade point on nano-chip arrays
In cobalt sulfide nickel nano film two sides, the cobalt sulfide nickel blade and cobalt sulfide nickel nano film are in 0-90 ° for cloth linking.
Embodiment 4
A kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure of the present embodiment presses such as lower section
Method is made:
1) nickel foam is impregnated with concentrated hydrochloric acid, then removes the oxygen of foam nickel surface with acetone, second alcohol and water and washing respectively
Compound and grease；
2) 0.1mol Co (NO is weighed respectively3)2·6H2O、1mol Ni(NO3)2·6H2O、0.55mol Na2SO4Addition contains
Have in the water of ethyl alcohol, mixed liquor is made, the volume ratio of second alcohol and water is 0.6:10.
3) mixed liquor in step 2) is added to contain in the water heating kettle through the processed nickel foam of step 1) and is reacted,
The nickel foam containing cobalt hydroxide nickel nano film is made,
4) nickel foam containing cobalt hydroxide nickel nano film will be made in step (3) to be placed in thiourea solution in water heating kettle
It is reacted, cobalt hydroxide nickel nano film is made to be changed into cobalt sulfide nickel nano film, the foam containing cobalt sulfide nickel nano film is made
Nickel, the cobalt sulfide nickel nano film rectangular array are distributed in foam nickel base:
5) continue growth in situ cobalt sulfide nickel blade, the cobalt sulfide nickel blade rectangular array point on nano-chip arrays
In cobalt sulfide nickel nano film two sides, the cobalt sulfide nickel blade and cobalt sulfide nickel nano film are in 0-90 ° for cloth linking.
The cobalt sulfide nickel nucleocapsid multi-level nano-structure of the different piece leaf density further prepared to implementation 1 carries out electron microscopic
Scarnning mirror, obtains electron-microscope scanning figure as shown in Figure 4, and a, b, c respectively indicate the electron-microscope scanning figure of different leaf density；
Fig. 5 indicates the microstructure of cobalt sulfide nickel nucleocapsid multi-level nano-structure under a scanning electron microscope, wherein arrow
Indicate classification cobalt sulfide nickel nanometer blade.
Fig. 6 indicates that cobalt sulfide nickel nano film-leaf nucleocapsid three-dimensional multistage structure electrode cyclic voltammetric and charge and discharge electrical property are surveyed
Trying curve, Fig. 6 a, which is electrode, sweeps cyclic voltammetry curves under speed in difference, and all curves show the feature of fake capacitance, and from
2mV s-1To 30mV s-1More consistent shape is kept, illustrates that it has the characteristic of good capacitor；Fig. 6 b is different electric currents
There is discharge platform and illustrate its redox capacitive characteristics in the charge and discharge curve under density, from current density 1A g-1To 20A
g-1Preferable symmetry is kept, illustrates its good capacitance characteristic.
Fig. 7 indicates cobalt sulfide nickel nano film-specific capacity of the leaf nucleocapsid three-dimensional multistage structure electrode under different current densities,
The specific capacity of electrode under different current densities, in 1A g-1Quality capability value is in 3000F g-1More than, and face specific capacity
In 7F cm-2More than, show high capability value；Even if furthermore current density increases to 20A g-1Capability value remains at one
High level shows superior electrochemical capacitance performance.
It can to sum up further illustrate, the present invention provides a kind of based on the counterfeit of cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure
Capacitor anode and preparation method thereof, anode structure cobalt sulfide nickel nano film array disclosed by the invention are grown directly upon highly conductive
Foam nickel base on, make it have very high electron mobility, be advantageously implemented fast charging and discharging；Meanwhile in nanometer sheet battle array
On column continue growth in situ cobalt sulfide nickel blade, can not only increase electrode using active surface, improve its energy density,
And expand the speed of action of active material and electrolyte；Moreover, this surface, which has vaned multilevel structure, increases space benefit
With rate, electrode active material mass surface density；Furthermore the multilevel structure of this direct one-step method preparation, core nanometer sheet are received with shell
Rice impeller structure is same structure between each other, and phase interface is not present, forms highly stable structure, and final obtain has both high matter
Measure the pseudocapacitors anode of specific capacity, area specific capacity and good high rate performance and cyclical stability.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (5)
1. a kind of preparation method of the pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure, the anode packet
It includes foam nickel base (1), be located at the cobalt sulfide nickel nano film (2) of array distribution on foam nickel base (1), linking in cobalt sulfide nickel
The cobalt sulfide nickel blade (3) in array growth distribution of nanometer sheet (2) two sides, the cobalt sulfide nickel nano film (2) is perpendicular to bubble
Foam nickel substrate (1), the cobalt sulfide nickel blade (3) and cobalt sulfide nickel nano film (2) along foam nickel base (1) opposite direction in 0 ~
90 degree, which is characterized in that described method includes following steps:
1) nickel foam is impregnated with concentrated hydrochloric acid, then removes the oxide of foam nickel surface with acetone, second alcohol and water and washing respectively
And grease；
2) Co (NO is weighed3)2•6H2O、 Ni(NO3)2•6H2O、Na2SO4It is added in the water containing ethyl alcohol, mixed liquor is made；Ni
(NO3)2·6H2O and Co (NO3)2·6H2The molar ratio of O is 0.1:1 ~ 1:0.1；Ni(NO3)2·6H2O and Co (NO3)2·6H2O
Mixture and Na2SO4Molar ratio be 1:0.5 ~ 1:4, the volume ratio of the second alcohol and water is 0.1 ~ 1:10；
3) mixed liquor in step 2 is added containing reacting in the water heating kettle through the processed nickel foam of step 1), is made
Nickel foam containing cobalt hydroxide nickel nano film, the nickel foam containing cobalt hydroxide nickel nano film as obtained by vulcanization processing,
Cobalt hydroxide nickel nano film is set to be changed into cobalt sulfide nickel nano film, the cobalt sulfide nickel nano film array distribution is in foam nickel base
On, the cobalt sulfide nickel nano film is perpendicular to foam nickel base:
4) continue growth in situ cobalt sulfide nickel blade directly on nano-chip arrays, the cobalt sulfide nickel blade is in array growth point
In cobalt sulfide nickel nano film two sides, the cobalt sulfide nickel blade is in anti-along foam nickel base with cobalt sulfide nickel nano film for cloth linking
Direction is in 0 ~ 90 degree.
2. a kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure according to claim 1
Preparation method, which is characterized in that the foam nickel base (1) is in cellular, and pore-size distribution is in 0.2 ~ 0.4 mm, surface density
280±25 g/m2, with a thickness of 1.6 mm.
3. a kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure according to claim 1
Preparation method, which is characterized in that for the cobalt sulfide nickel nano film (2) with a thickness of 30-50 nm, the cobalt sulfide nickel blade (3) is thick
Degree is 5-10 nm.
4. a kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure according to claim 1
Preparation method, which is characterized in that vulcanization described in step 3) is specially to be placed in the nickel foam containing cobalt hydroxide nickel nano film
It is reacted in water heating kettle in aqueous solution containing vulcanizing agent.
5. a kind of pseudocapacitors anode based on cobalt sulfide nickel nucleocapsid three-dimensional multistage nanostructure according to claim 4
Preparation method, which is characterized in that the vulcanizing agent is one of vulcanized sodium, thiocarbamide, thioacetamide.
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| CN107045945B (en) * | 2017-05-04 | 2018-12-21 | 重庆中科超容科技有限公司 | It is a kind of directly to grow nitrogen-doped carbon-cobalt compound microplate array super capacitor anode and preparation method thereof based on conductive substrates |
| CN107337190B (en) * | 2017-07-10 | 2020-02-07 | 佛山市利元合创科技有限公司 | Preparation method of nanometer flower-shaped cobalt nickel phosphate growing on foam nickel |
| CN107492657B (en) * | 2017-07-12 | 2019-12-10 | 三峡大学 | preparation method of cobalt-nickel sulfide positive and negative electrode batteries and application of cobalt-nickel sulfide positive and negative electrode batteries in alkaline recyclable batteries |
| CN108054019B (en) * | 2017-07-26 | 2019-12-24 | 青岛科技大学 | NiCo of laminated structure2S4@NixCo(1-x)(OH)2Preparation method and application of composite material |
| CN107265521B (en) * | 2017-08-08 | 2018-10-16 | 卢荣红 | A kind of preparation method of the CoxNiyS nano materials as lithium sky battery |
| CN109126825B (en) * | 2018-09-20 | 2021-10-01 | 山东师范大学 | Nickel doped Co9S8Nano-sheet dual-functional electrocatalyst and preparation method thereof |
| CN111128561A (en) * | 2019-12-31 | 2020-05-08 | 武汉工程大学 | Flexible asymmetric solid-state supercapacitor with nanostructure and preparation method thereof |
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| CN103887082A (en) * | 2014-03-17 | 2014-06-25 | 湖州师范学院 | Method for growing hexagonal Co(OH)2 on surface of metal foamed nickel |
| CN104240972B (en) * | 2014-09-11 | 2018-12-14 | 江苏大学 | A kind of porous flake NiCo2O4The preparation method of/graphene complex capacitance material |
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