CN104752071B - A kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, preparation method and applications - Google Patents
A kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, preparation method and applications Download PDFInfo
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- CN104752071B CN104752071B CN201510153050.8A CN201510153050A CN104752071B CN 104752071 B CN104752071 B CN 104752071B CN 201510153050 A CN201510153050 A CN 201510153050A CN 104752071 B CN104752071 B CN 104752071B
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- Y02E60/13—Energy storage using capacitors
Abstract
The invention discloses a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, preparation method and applications.Provide a kind of two-step method and prepare cobaltosic oxide, the method for cobalt molybdate nucleocapsid heterogeneous structural nano linear array material, the cobaltosic oxide of preparation, cobalt molybdate nucleocapsid heterogeneous structural nano linear array are using cobaltosic oxide nano line as skeleton, cobalt molybdate nano thin-film material is coated outside it, structure vertical growth, marshalling, have well-regulated 3-D heterojunction structure, can be directly as the electrode material of ultracapacitor.Compared with prior art, preparation method product purity height of the present invention, good dispersion, good crystalline and controllable, production cost is low, favorable reproducibility.Electrode material as ultracapacitor realizes long cyclical stability, big specific electric capacity, high energy density and power density.
Description
Technical field
The invention belongs to technical field of nano material, and in particular to a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterojunction structure
Nano-wire array, preparation method and applications.
Background technology
With the rapid development of science and technology and electronic product update, electrode material for super capacitor
Research has caused the great interest of researchers.At present, traditional electrode material for super capacitor mainly has following a few classes：
Carbon material class electrode material, conducting polymer species electrode material, metal oxide-type electrode material.
However, in actual applications, it has been found that, respective lack more or less all be present in these traditional electrode materials
Fall into, such as：Active area is small, and poorly conductive, capacitance are low, and circulation time is short, and energy density and power density are small, because these are lacked
Sunken presence, it is difficult to meet application demand higher in reality.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano line
Array, using cobaltosic oxide nano line as skeleton, cobalt molybdate nano thin-film material is coated outside it.
Present invention also offers a kind of two-step method controllable preparation cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array
The method of row.
Present invention also offers a kind of cobaltosic oxide, the application of cobalt molybdate nucleocapsid heterogeneous structural nano linear array.
A kind of cobaltosic oxide provided by the invention, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, with cobaltosic oxide
Nano wire is skeleton, and cobalt molybdate nano thin-film material is coated outside it, structure vertical growth, marshalling, has rule
3-D heterojunction structure.
A kind of cobaltosic oxide provided by the invention, the preparation method of cobalt molybdate nucleocapsid heterogeneous structural nano linear array, bag
Include following steps：
A, nickel foam is cleaned；
B, CoCL2 6H2O, ammonium fluoride, urea are dissolved in redistilled water and are well mixed, obtained mixed liquor, be put into
In reactor, the nickel foam after cleaning is immersed in mixed liquor, sealing reaction, cooling, cleaning, is dried, calcining, is grown four
The nickel foam of Co 3 O nano-wire array；
C, Sodium Molybdate Dihydrate, urea are dissolved in redistilled water and obtain mixed liquor, be put into reactor, grow four
The nickel foam of Co 3 O nano-wire array is immersed in mixed liquor, sealing reaction, cooling, cleaning, is dried, calcining, is obtained four oxygen
Change three cobalts, cobalt molybdate nucleocapsid heterogeneous structural nano linear array.
Cleaning method is in step a：The nickel foam that there is impurity on surface is sequentially placed into watery hydrochloric acid, ethanol, redistilled water
In be cleaned by ultrasonic, be cleaned by ultrasonic the time be respectively 10-20min.
Further, step b is：CoCL2 6H2O, ammonium fluoride, urea is well mixed in redistilled water by adding,
Mixed liquor is obtained, is added in reactor, the nickel foam of clean surface after cleaning is immersed in mixed liquor, reactor is closed, heating
Reaction, is cooled to room temperature, is rinsed well successively with ethanol, redistilled water, drying at room temperature, then in 300-400 DEG C of air atmosphere
Lower calcining 3h, that is, cobaltosic oxide nano linear array is made；
Ammonium fluoride concentration >=0.008mol L in mixed liquor in step b-1, concentration >=0.002mol of CoCL2 6H2O
L-1, concentration >=0.01mol L of urea-1, volume >=35mL of redistilled water；The heating response condition is at 100 DEG C
React 8h.
Further, step c is：By Sodium Molybdate Dihydrate, urea by being stirred in redistilled water, formed uniformly, must mixed
Solution, the nickel foam for growing cobaltosic oxide nano linear array prepared by step b are immersed in mixed solution, are together put into anti-
Answer in kettle, reactor is closed, heating response, is cooled to room temperature, ethanol cleaning, drying at room temperature, is then forged under 300 DEG C of air atmospheres
3h is burnt, obtains cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array.
Sodium Molybdate Dihydrate concentration in mixed solution is 0.001-0.2mol L in step c-1, the concentration of urea >=
0.001mol L-1；The heating response condition is to react 2-20h at 100-200 DEG C.
A kind of cobaltosic oxide provided by the invention, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor
The application of the electrode material of device.
A kind of two-step method provided by the invention prepares cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array material
Method, be in closed high-temperature high-pressure reaction kettle, using redistilled water as reaction dissolvent, add CoCL2 6H2O,
Ammonium fluoride, urea are well mixed, and by heating response system, are produced a hyperbaric environment and are prepared cobaltosic oxide nano wire rod
Material, then, reaction dissolvent is used as using redistilled water, addition Sodium Molybdate Dihydrate, urea are well mixed, by containing four oxidations
The nickel foam of three cobalt nanowire materials immerses mixed solution, and produce hyperbaric environment by heating response system aoxidizes to prepare cobalt four
A kind of effective ways of three cobalts, cobalt molybdate nucleocapsid heterogeneous structural nano linear array material.
Compared with prior art, preparation method product purity height of the present invention, good dispersion, good crystalline and controllable, production
Cost is low, favorable reproducibility.Prepared cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array are grown in nickel foam
On, long cyclical stability, big specific electric capacity, high energy can be realized directly as the electrode material of ultracapacitor
Density and power density, and flexible Asymmetric Supercapacitor is assembled into porous nickel cobalt double-metal hydroxide, enter
One step increases voltage range, improves energy density and power density, it is easy to the LED of commercial use is lighted,
There is potential application value in terms of energy stores.
Brief description of the drawings
Fig. 1 is the electron scanning micrograph (SEM) of cobaltosic oxide nano wire material prepared by embodiment 1；
Fig. 2 is cobaltosic oxide, the scanning electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 1
Sub- microphotograph (SEM)；
Fig. 3 is cobaltosic oxide, the X ray of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 1
Diffraction images (XRD)；
Fig. 4 is cobaltosic oxide, the transmission electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 1
Mirror photo (TEM)；
Fig. 5 is cobaltosic oxide, the scanning electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 2
Sub- microphotograph (SEM)；
Fig. 6 is cobaltosic oxide, the scanning electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 3
Sub- microphotograph (SEM)；
Fig. 7 is cobaltosic oxide, the scanning electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 4
Sub- microphotograph (SEM)；
Fig. 8 is cobaltosic oxide, the scanning electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 5
Sub- microphotograph (SEM)；
Fig. 9 is cobaltosic oxide, the scanning electricity of cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 6
Sub- microphotograph (SEM)；
Figure 10 is the scanning of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 7
Electron micrograph (SEM)；
Figure 11 is the circulation of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array material prepared by embodiment 1
Volt-ampere curve (CV)；
Figure 12 is cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array material and four oxygen prepared by embodiment 1
Change the charging and discharging curve comparison diagram of three cobalt nano materials；
Figure 13 is cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array material and four oxygen prepared by embodiment 1
Change energy density-current density plot comparison diagram of three cobalt nanowire materials.
Embodiment
Embodiment 1
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into watery hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, after 40mL redistilled waters, 2mmol CoCL2 6H2Os, 4mmol ammonium fluorides and 10mmol urea being well mixed
Add in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
8h is reacted, reactor is taken out and naturally cools to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature, 400
3h is calcined under DEG C air atmosphere, that is, cobaltosic oxide nano wire material is made.
C, 1mmol Sodium Molybdate Dihydrates and 10mmol urea are dissolved in 40mL redistilled waters, magnetic agitation 20min,
Uniform mixed solution is formed, the nickel foam with the cobaltosic oxide nano linear array forerunner not calcined of above-mentioned preparation is soaked
Enter mixed solution, pour into reactor, reactor is closed, 10h is reacted at 100 DEG C, is cooled to room temperature, ethanol cleans, so
3h is calcined at 300 DEG C afterwards, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Prepared cobaltosic oxide, the pattern of cobalt molybdate nucleocapsid heterogeneous structural nano line composite was as shown in Fig. 2 should
Heterojunction structure composite vertical-growth is arranged uniformly, in 3-D heterojunction structure on the surface of nickel foam.
10mL 3M NaOH solutions are taken to be put into as electrolyte solution in electrolytic cell, four oxidations that will be prepared in embodiment 1
Three cobalts, cobalt molybdate nucleocapsid heterogeneous structural nano line composite are 5mV s sweeping speed as working electrode-1When survey cyclic voltammetric
Curve, it is then 10mV s sweeping speed-1When survey cyclic voltammetry curve, the like to obtain sweeping speed be 20mV s-1、50mV s-1、
100mV s-1, such as Fig. 9, be can be seen that from obtained CV figures with the increase voltage linear relation for sweeping speed.
10mL 3M NaOH solutions are taken to be put into as electrolyte solution in electrolytic cell, four oxidations that will be prepared in embodiment 1
Three cobalts, cobalt molybdate nucleocapsid heterogeneous structural nano line composite and cobaltosic oxide nano line are as working electrode, in 1A g-1When
Charging and discharging curve, such as Figure 10 are obtained, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano pipe can be drawn from charging and discharging curve
Composite is very big compared to other materials capacity as electrode, is 1A g by calculating in current density-1When, maximum specific electricity
Hold for 1112.51F g-1。
Embodiment 2
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into watery hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, after 40mL redistilled waters, 2mmol CoCL2 6H2Os, 4mmol ammonium fluorides and 10mmol urea being well mixed
Add in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
8h is reacted, reactor is taken out and naturally cools to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature, 400
3h is calcined under DEG C air atmosphere, that is, cobaltosic oxide nano wire material is made.
C, by 1mmol Sodium Molybdate Dihydrates and the dissolving of 10mmol urea and in 40mL redistilled waters, magnetic agitation
20min, uniform mixed solution is formed, by the bubble with the cobaltosic oxide nano linear array forerunner not calcined of above-mentioned preparation
Foam nickel immerses mixed solution, pours into reactor, and reactor is closed, reacts 2h at 100 DEG C, is cooled to room temperature, ethanol is clear
Wash, 3h is then calcined at 300 DEG C, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Embodiment 3
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into watery hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, after 40mL redistilled waters, 2mmol CoCL2 6H2Os, 4mmol ammonium fluorides and 10mmol urea being well mixed
Add in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
8h is reacted, reactor is taken out and naturally cools to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature, 300
3h is calcined under DEG C air atmosphere, that is, cobaltosic oxide nano wire material is made.
C, by 1mmol Sodium Molybdate Dihydrates and the dissolving of 10mmol urea and in 40mL redistilled waters, magnetic agitation
20min, uniform mixed solution is formed, by the bubble with the cobaltosic oxide nano linear array forerunner not calcined of above-mentioned preparation
Foam nickel immerses mixed solution, pours into reactor, and reactor is closed, reacts 5h at 100 DEG C, is cooled to room temperature, ethanol is clear
Wash, 3h is then calcined at 300 DEG C, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Embodiment 4
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into watery hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, after 40mL redistilled waters, 2mmol CoCL2 6H2Os, 4mmol ammonium fluorides and 10mmol urea being well mixed
Add in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
8h is reacted, reactor is taken out and naturally cools to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature, 300
3h is calcined under DEG C air atmosphere, that is, cobaltosic oxide nano wire material is made.
C, by 1mmol Sodium Molybdate Dihydrates and the dissolving of 10mmol urea and in 40mL redistilled waters, magnetic agitation
20min, form uniform mixed solution, by by above-mentioned preparation with the cobaltosic oxide nano linear array forerunner's not calcined
Nickel foam immerses mixed solution, pours into reactor, and reactor is closed, reacts 15h at 100 DEG C, is cooled to room temperature, ethanol
Cleaning, then calcines 3h at 300 DEG C, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Embodiment 5
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into watery hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, after 40mL redistilled waters, 2mmol CoCL2 6H2Os, 4mmol ammonium fluorides and 10mmol urea being well mixed
Add in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
8h is reacted, reactor is taken out and naturally cools to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature, 300
3h is calcined under DEG C air atmosphere, that is, cobaltosic oxide nano wire material is made.
C, by 1mmol Sodium Molybdate Dihydrates and the dissolving of 10mmol urea and in 40mL redistilled waters, magnetic agitation
20min, form uniform mixed solution, by by above-mentioned preparation with the cobaltosic oxide nano linear array forerunner's not calcined
Nickel foam immerses mixed solution, pours into reactor, and reactor is closed, reacts 20h at 100 DEG C, is cooled to room temperature, ethanol
Cleaning, then calcines 3h at 300 DEG C, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano pipe array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Embodiment 6
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, 40mL redistilled waters, 10mmol CoCL2 6H2Os, 20mmol ammonium fluorides and 10mmol urea are well mixed
Add afterwards in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
Lower reaction 8h, take out reactor and naturally cool to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature,
3h is calcined under 300 DEG C of air atmospheres, that is, cobaltosic oxide nano wire material is made.
C, by 1mmol Sodium Molybdate Dihydrates and the dissolving of 10mmol urea and in 40mL redistilled waters, magnetic agitation
20min, form uniform mixed solution, by by above-mentioned preparation with the cobaltosic oxide nano linear array forerunner's not calcined
Nickel foam immerses mixed solution, pours into reactor, and reactor is closed, reacts 10h at 100 DEG C, is cooled to room temperature, ethanol
Cleaning, then calcines 3h at 300 DEG C, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Embodiment 7
The preparation method of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, comprises the following steps：
A, the nickel foam that there is impurity on surface is sequentially placed into hydrochloric acid, ethanol, redistilled water and be cleaned by ultrasonic
20min；
B, 40mL redistilled waters, 10mmol CoCL2 6H2Os, 20mmol ammonium fluorides and 10mmol urea are well mixed
Add afterwards in 60mL reactors, treated nickel foam is immersed in mixed liquor, pours into reactor, tightens kettle cover, at 100 DEG C
Lower reaction 8h, take out reactor and naturally cool to room temperature, rinsed well successively with ethanol, redistilled water, drying at room temperature,
3h is calcined under 300 DEG C of air atmospheres, that is, cobaltosic oxide nano wire material is made.
C, by 5mmol Sodium Molybdate Dihydrates and the dissolving of 10mmol urea and in 40mL redistilled waters, magnetic agitation
20min, form uniform mixed solution, by by above-mentioned preparation with the cobaltosic oxide nano linear array forerunner's not calcined
Nickel foam immerses mixed solution, pours into reactor, and reactor is closed, reacts 10h at 100 DEG C, is cooled to room temperature, ethanol
Cleaning, then calcines 3h at 300 DEG C, that is, cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array is made.
The application of a kind of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, as super capacitor material
Using.
Claims (6)
- A kind of 1. preparation method of cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array, it is characterised in that the system Preparation Method comprises the following steps：A, nickel foam is cleaned；B, CoCL2 6H2O, ammonium fluoride, urea are dissolved in redistilled water and are well mixed, obtained mixed liquor, be put into reaction In kettle, the nickel foam after cleaning is immersed in mixed liquor, sealing reaction, cooling, cleaning, is dried, calcining, is grown four oxidations The nickel foam of three cobalt nanowire arrays；C, Sodium Molybdate Dihydrate, urea are dissolved in redistilled water and obtain mixed liquor, be put into reactor, grow four oxidations The nickel foam of three cobalt nanowire arrays is immersed in mixed liquor, sealing reaction, cooling, cleaning, is dried, calcining, is obtained four oxidations three Cobalt, cobalt molybdate nucleocapsid heterogeneous structural nano linear array；Ammonium fluoride mol L of concentration >=0.008 in mixed liquor in step b-1, the mol L of the concentration of CoCL2 6H2O >=0.002-1, The concentration of urea >=0.01mol L-1；Step c is：Sodium Molybdate Dihydrate, urea are dissolved in redistilled water and stirred, is formed uniformly, is obtained mixed solution, will walk The nickel foam for growing cobaltosic oxide nano linear array prepared by rapid b is immersed in mixed solution, is together put into reactor, instead Answer kettle closed, heating response, be cooled to room temperature, ethanol cleaning, drying at room temperature, then calcine 3h under 300 DEG C of air atmospheres, obtain Cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array；Sodium Molybdate Dihydrate concentration in mixed solution is 0.001-0.2mol L in step c-1, the mol of the concentration of urea >=0.001 L-1；The cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array are using cobaltosic oxide nano line as skeleton, at it Outside cladding cobalt molybdate nano thin-film material.
- 2. preparation method according to claim 1, it is characterised in that step b is：By CoCL2 6H2O, ammonium fluoride, urea It is dissolved in redistilled water and is well mixed, obtain mixed liquor, add in reactor, the nickel foam of clean surface after cleaning is soaked Enter in mixed liquor, reactor is closed, heating response, is cooled to room temperature, is rinsed well successively with ethanol, redistilled water, room temperature Dry, 3h is then calcined under 300-400 DEG C of air atmosphere, that is, cobaltosic oxide nano linear array is made.
- 3. preparation method according to claim 2, it is characterised in that heating response described in step b, condition are 100 8 h are reacted at DEG C.
- 4. preparation method according to claim 1, it is characterised in that heating response condition described in step c is in 100- 2-20 h are reacted at 200 DEG C.
- 5. preparation method according to claim 1, it is characterised in that cleaning method is in step a：Surface there is into impurity Nickel foam, which is sequentially placed into watery hydrochloric acid, ethanol, redistilled water, to be cleaned by ultrasonic, and it is 10-20 min to be cleaned by ultrasonic the time.
- 6. the application of the cobaltosic oxide, cobalt molybdate nucleocapsid heterogeneous structural nano linear array prepared by a kind of claim 1, it is special Sign is, the application as the electrode material of ultracapacitor.
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| CN111564319B (en) * | 2020-05-06 | 2021-07-06 | 电子科技大学 | Preparation method of three-dimensional nanostructure material with porous core-shell heterostructure |
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| 镍钴复合氧化物的制备及其电化学性能研究;马雪婧;《中国优秀硕士论文全文数据库》;20141031;第11-23页 * |
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