CN109979760A - A kind of preparation method and applications of cobalt-nickel oxide/carbon ball nanocomposite - Google Patents
A kind of preparation method and applications of cobalt-nickel oxide/carbon ball nanocomposite Download PDFInfo
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- CN109979760A CN109979760A CN201910315238.6A CN201910315238A CN109979760A CN 109979760 A CN109979760 A CN 109979760A CN 201910315238 A CN201910315238 A CN 201910315238A CN 109979760 A CN109979760 A CN 109979760A
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- cobalt
- carbon ball
- nickel oxide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/36—Nanostructures, e.g. nanofibres, nanotubes or fullerenes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/46—Metal oxides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 cobalt-nickel oxide/carbon ball nanocomposite preparation method and applications.Firstly, preparing carbon ball using hydrothermal carbonization method using glucose as carbon source；Then cobalt nickel hydroxide/carbon ball composite material is prepared using in-situ growth technology；Later, by obtained composite material 300 under air atmosphereoC calcines 3 hours to get cobalt-nickel oxide/carbon ball nanocomposite is arrived.Preparation method of the present invention is easily achieved, and obtained cobalt-nickel oxide/carbon ball nanocomposite can be good in terms of being applied to electrode material for super capacitor.Pass through electrochemical property test, the results showed that with the composite material specific capacitance with higher and cyclical stability of preparation method of the present invention preparation.
Description
Technical field
The present invention relates to a kind of preparation method of electrode material for super capacitor, in particular to a kind of cobalt-nickel oxide/carbon
The preparation method and applications of ball nanocomposite.
Background technique
In recent years, with the pollution of the consumption of traditional fossil energy and environment, demand of the people to the clean and effective energy is
It needs urgently to solve the problems, such as at present.Supercapacitor is as a kind of energy storage device, because its energy density and power density are big, fill
The features such as velocity of discharge is fast, have extended cycle life, no pollution to the environment, receives people and largely pays close attention to.
Electrode material is the principal element for influencing supercapacitor chemical property.Currently, metal oxide electrode material
It mainly include ruthenium-oxide, cobalt oxide, nickel oxide, manganese dioxide etc..Wherein, cobalt oxide, nickel oxide have abundant raw material, without dirt
The advantages that dye, high theoretical specific capacitance, be a kind of very potential electrode material for super capacitor.But cobalt oxide, nickel oxide
There are poorly conductive, specific surface area is small, easy to reunite the problems such as, thus by compound with carbon material, electrode material can be improved well
Electric conductivity, structural stability and service life of material etc..
Summary of the invention
The purpose of the invention is to improve electric conductivity and electricity of the metal oxide as electrode material for super capacitor
Capacitive energy expands it as electrode material in the application range of supercapacitor, it is multiple to provide a kind of cobalt-nickel oxide/carbon ball nanometer
The preparation method and applications of condensation material.
Prepare cobalt-nickel oxide/carbon ball nanocomposite specific steps are as follows:
(1) 4.0 g glucose, 4.0 g urea and 80 mL distilled water are successively added into beaker and stirring keeps solid sufficiently molten
Mixed solution is made in solution.
(2) mixed solution made from step (1) is transferred in 100 mL reaction kettles, is reacted 6 hours at 180 DEG C.To
Reaction terminates after being cooled to room temperature, and products therefrom is centrifugated, and is alternately washed 3 ~ 5 times with distilled water and dehydrated alcohol, institute
It obtains product and is placed at 80 DEG C 6 hours dry, obtained carbon ball.
(3) 0.24 g nickel chloride, 0.48 g cobalt chloride, 0.28 g hexamethylenetetramine and 80 are successively added into beaker
ML distilled water, stirring are completely dissolved up to solid, and carbon ball made from 0.01 g step (2) is then added will after stirring 15 minutes
Solution is transferred in 250 mL round-bottomed flasks, condensing reflux is stirred at low speed under conditions of 95 DEG C 6 hours, to after reaction
Cooled to room temperature, then be centrifuged, it is alternately washed 3 ~ 5 times with distilled water and dehydrated alcohol, and dry at 80 DEG C
It after 6 hours, is placed in the middle part of tube furnace, is calcined 3 hours for 300 DEG C under air atmosphere, reaction terminates to be cooled to room temperature, and obtains
Cobalt-nickel oxide/carbon ball nanocomposite.
Cobalt-nickel oxide of the invention/carbon ball nanocomposite can be answered as the electrode material of supercapacitor
With.
Compared with prior art, the beneficial effects are mainly reflected as follows:
Preparation method of the invention is simple, easy to accomplish, low in cost, during the preparation process by compound with carbon material, utilization
The fake capacitance behavior of nickel oxide, cobalt oxide realizes two oxides and has complementary advantages, substantially improves the capacitive character of electrode material
Can, it is able to solve traditional cobalt-nickel oxide poorly conductive, the problem that specific surface area is small, easy to reunite, to improve the electrification of material
Learn performance.
Detailed description of the invention
Fig. 1 is cobalt-nickel oxide/carbon ball nanocomposite specific capacitance made from the embodiment of the present invention with current density
Variation relation figure.
Specific embodiment
Embodiment:
(1) 4.0 g glucose, 4.0 g urea and 80 mL distilled water are successively added into beaker and stirring keeps solid sufficiently molten
Mixed solution is made in solution.
(2) mixed solution made from step (1) is transferred in 100 mL reaction kettles, is reacted 6 hours at 180 DEG C.To
Reaction terminates after being cooled to room temperature, and products therefrom is centrifugated, and is alternately washed 4 times with distilled water and dehydrated alcohol, gained
Product is placed at 80 DEG C 6 hours dry, obtained carbon ball.
(3) 0.24 g nickel chloride, 0.48 g cobalt chloride, 0.28 g hexamethylenetetramine and 80 are successively added into beaker
ML distilled water, stirring are completely dissolved up to solid, and carbon ball made from 0.01 g step (2) is then added will after stirring 15 minutes
Solution is transferred in 250 mL round-bottomed flasks, condensing reflux is stirred at low speed under conditions of 95 DEG C 6 hours, to after reaction
Cooled to room temperature, then be centrifuged, it is alternately washed 3 ~ 5 times with distilled water and dehydrated alcohol, and dry at 80 DEG C
It after 6 hours, is placed in the middle part of tube furnace, is calcined 3 hours for 300 DEG C under air atmosphere, reaction terminates to be cooled to room temperature, and obtains
Cobalt-nickel oxide/carbon ball nanocomposite.
By cobalt-nickel oxide/carbon ball nanocomposite obtained in the present embodiment: polyvinylidene fluoride: carbon black is according to matter
Then amount is added a small amount of n-methyl-2-pyrrolidone solvent, is applied to nickel foam after grinding uniformly than being that 85:5:10 is mixed
On, holding application area is 1.0 cm2, in 10 MPa pressure lower sheetings to get electric to cobalt-nickel oxide/carbon ball work after drying
Pole；Working electrode obtained is placed in the KOH electrolyte of 2.0 mol/L, it is enterprising in CHI660E electrochemical workstation under room temperature
Row electrochemical property test.
Electrochemical results show that cobalt-nickel oxide/carbon ball nanocomposite has preferable capacitive property.Sample
Specific capacitance value under different current densities is as shown in Figure 1.
Claims (2)
1. a kind of cobalt-nickel oxide/carbon ball nanocomposite preparation method, it is characterised in that specific steps are as follows:
(1) 4.0 g glucose, 4.0 g urea and 80 mL distilled water are successively added into beaker and stirring keeps solid sufficiently molten
Mixed solution is made in solution；
(2) mixed solution made from step (1) is transferred in 100 mL reaction kettles, is reacted 6 hours at 180 DEG C；Wait react
After end is cooled to room temperature, products therefrom is centrifugated, and is alternately washed 3 ~ 5 times with distilled water and dehydrated alcohol, gained produces
Object is placed at 80 DEG C 6 hours dry, obtained carbon ball；
(3) 0.24 g nickel chloride, 0.48 g cobalt chloride, 0.28 g hexamethylenetetramine and 80 mL are successively added into beaker to steam
Distilled water, stirring are completely dissolved up to solid, carbon ball made from 0.01 g step (2) are then added, after stirring 15 minutes, by solution
It is transferred in 250 mL round-bottomed flasks, condensing reflux is stirred at low speed under conditions of 95 DEG C 6 hours, to natural after reaction
It is cooled to room temperature, then is centrifuged, alternately washed 3 ~ 5 times with distilled water and dehydrated alcohol, and drying 6 is small at 80 DEG C
Shi Hou is placed in the middle part of tube furnace, is calcined 3 hours for 300 DEG C under air atmosphere, and reaction terminates to be cooled to room temperature, and obtains cobalt nickel
Oxide/carbon ball nanocomposite.
2. a kind of cobalt-nickel oxide/carbon ball nanocomposite application of preparation method preparation as described in claim 1,
It is characterized in that the composite material can be used as the electrode material of supercapacitor.
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| CN201910315238.6A CN109979760A (en) | 2019-04-18 | 2019-04-18 | A kind of preparation method and applications of cobalt-nickel oxide/carbon ball nanocomposite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498990A (en) * | 2019-09-23 | 2019-11-26 | 徐曦 | A kind of preparation method and electromagnetic wave shield film of C@Ni composite material |
| CN114291853A (en) * | 2021-12-10 | 2022-04-08 | 西安理工大学 | Biomass carbon/nanograss-like CoNiO2Method for preparing composite material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498990A (en) * | 2019-09-23 | 2019-11-26 | 徐曦 | A kind of preparation method and electromagnetic wave shield film of C@Ni composite material |
| CN110498990B (en) * | 2019-09-23 | 2021-07-27 | 徐曦 | Preparation method of C @ Ni composite material and electromagnetic shielding film |
| CN114291853A (en) * | 2021-12-10 | 2022-04-08 | 西安理工大学 | Biomass carbon/nanograss-like CoNiO2Method for preparing composite material |
| CN114291853B (en) * | 2021-12-10 | 2024-03-19 | 西安理工大学 | Biomass carbon/nano grass-like CoNiO 2 Preparation method of composite material |
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Application publication date: 20190705 |