CN108376614A - A kind of NiCo2O4/ carbon nano-tube combination electrode material and preparation method thereof - Google Patents

A kind of NiCo2O4/ carbon nano-tube combination electrode material and preparation method thereof Download PDF

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CN108376614A
CN108376614A CN201810170727.2A CN201810170727A CN108376614A CN 108376614 A CN108376614 A CN 108376614A CN 201810170727 A CN201810170727 A CN 201810170727A CN 108376614 A CN108376614 A CN 108376614A
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carbon nano
pipe array
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nickel
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CN108376614B (en
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徐靖才
洪波
王攀峰
王新庆
彭晓领
金红晓
葛洪良
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China Jiliang University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/24Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • H01G11/36Nanostructures, e.g. nanofibres, nanotubes or fullerenes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • YGENERAL 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
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    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E60/13Energy storage using capacitors

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Abstract

A kind of NiCo2O4/ carbon nano-tube combination electrode material and preparation method thereof, it is related to a kind of monomer using carbon nanotube as core, NiCo2O4Nanotube is the nucleocapsid of shell, the generally NiCo of high-sequential nano-tube array2O4/ carbon nano-tube combination electrode material, preparation process include:One, the alumina formwork that aperture is 200nm bilaterals is chosen, the copper film for being 1 μm in its back side magnetron sputtering a layer thickness is dried after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic successively;Two, using the Woelm Alumina handled well as template, nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell;Three, using chemical vapour deposition technique in nickel-cobalt alloy nano pipe deposition of carbon nanotubes;Four, alumina formwork is removed with NaOH, NiCo is obtained after calcining2O4/ carbon nano tube compound material.The NiCo that this method obtains2O4/ carbon nano tube compound material is applied to have higher specific capacitance value and good stable electrochemical property when electrode material for super capacitor.

Description

A kind of NiCo2O4/ carbon nano-tube combination electrode material and preparation method thereof
Technical field
The present invention relates to a kind of NiCo2O4/ carbon nano-tube combination electrode material and preparation method thereof belongs to material preparation neck Domain.
Background technology
In recent years, ultracapacitor because of it with high power density, charge short time and many advantages, such as of having extended cycle life, It is widely used in communication, aerospace, large scale industry equipment, the fields for requiring abrupt release super-large current such as many such as microelectronic component It closes, is especially had broad application prospects in new-energy automobile field.Electrode material is the pass for influencing performance of the supercapacitor Key factor, with RuO2Equal metal oxide containing precious metals have larger specific capacitance value, but expensive price and toxicity because of its fake capacitance principle Limit its commercial applications.Some cheap metal oxides replace noble metal to become research as electrode material for super capacitor Hot spot.NiCo2O4It is a kind of typical spinel structure metal composite oxide, there are Co3+/Co2+And Ni3+/Ni2+Oxidation is also Former electricity is right, can obtain higher operating voltage window and specific capacitance value, while because its non-toxic inexpensive shows as great potential Electrode material, therefore the NiCo of different structure, form, size2O4Preparation receive the concern of numerous researchers(Such as CN102259936B; CN102092797B; CN102745752A; CN103107025A; CN103594246A; CN103318978B; CN104003455B; CN104659358A).However compared with metal oxide containing precious metals, NiCo2O4Due to it Electric conductivity is poor, causes specific capacitance relatively low, and cycle impulse electricity is filled under high current density and is not sufficiently stable.Therefore, people's consideration will NiCo2O4With carbon material or conducting polymer carry out it is compound improve the electric conductivity of material, enhance its chemical property to reach Purpose(Such as CN103117389B; CN104143450A).
Carbon nanotube(CNTs)Nanostructure with special one-dimensional hollow, it is mainly by the carbon of hexagonal arrangement original Son constitute single layer or several layers coaxial pipe constitute, have excellent heat-resisting, corrosion-resistant, impact resistance, and conduct heat and It conducts electricity very well, it is made to have the potential advantages for preparing large capacity ultracapacitor.But CNTs is separately as electrode of super capacitor Material specific capacitance is worth too low, generally only 40F/g.In view of the complementarity between transition oxide and carbon nanotube, usually consider Its is compound, make the combination product that not only there is fake capacitance characteristic, but also there is double layer characteristic, there is high ratio electricity to prepare The electrode material for super capacitor that appearance, high conductivity, cycle charge-discharge are stablized.Leela etc.(Asymmetric Flexible Supercapacitor Stack, Nonoscale Research Letters, 2008)Metal is prepared using sol-gal process Oxide/multi-wall carbon nano-tube combination electrode material shows excellent chemical property, but sol-gal process is added surface and lives Property agent, is readily incorporated impurity, and cost is higher;Kuan etc.(Electrodeposition of Nickel and Cobalt Mixed Oxide/Carbon Nanotube Thin Films and Their Charge Storage Properties, J. Electorchem. soc., 2006), Fan etc.(Preparation and capacitive properties of cobalt-nickel oxides/carbon nanotube coposites,Electrochim. Acta. 2007)And Wen Deng(A three dimensional vertically aligned multiwall carbon nanotube-NiCo2O4 core-shell structure for novel high-performance supercapacitors, J. Mater. Chem. A, 2014)It is prepared for cobalt-nickel oxide/carbon nano tube compound material, this method reaction using electrochemical deposition method Time is long, and energy consumption is high;Chinese patent(CN1315139C)Provide a kind of carbon nanotube and the compound approach of transition oxide, profit With binder that carbon nanotube and transition metal oxide is compound, the addition of binder can increase the internal resistance of material, be unfavorable for this Composite material is as electrode material for super capacitor.
Invention content
The purpose of the present invention is to provide a kind of NiCo2O4/ carbon nano-tube combination electrode material, while one kind being also provided and is adopted Nickel-cobalt alloy nano pipe array is prepared with square-wave pulse electrodeposition process, and then by chemical vapour deposition technique in nickel-cobalt alloy nano Deposition of carbon nanotubes in pipe obtains NiCo by removing alumina formwork and calcining2O4The system of/carbon nano-tube combination electrode material Preparation Method.
The present invention the specific steps are:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:It gets out aluminium oxide with the first step Template is to electrode as working electrode, platinized platinum, and saturated calomel electrode is auxiliary electrode, and square-wave pulse is carried out after deposition liquid is added Electro-deposition, deposition is after the completion wash with distilled water to neutral;
The deposition liquid ingredient is:1 part of NiSO4•6H2O, 2 parts of CoSO4•7H2O, H3BO3(NH4)2SO4
The condition of the square-wave pulse electro-deposition is:Continue 30 s in 0 V, then moment add 5 s of potential duration of -2.5 V Square-wave pulse electro-deposition certain time;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 500 ~ 800 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 10 ~ 60min, continue to be passed through Ar and be cooled to room Temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
Advantages of the present invention:One, the NiCo that the present invention obtains2O4/ carbon nano-tube combination electrode material has novel and unique Structure(Monomer is using carbon nanotube as core, NiCo2O4Nanotube is the nucleocapsid of shell, generally high-sequential nanotube battle array Row);Two, the NiCo obtained2O4/ carbon nano-tube combination electrode material is used to have when electrode of super capacitor higher than electricity Capacitance and good stable electrochemical property.
Specific implementation mode
Here is that the present invention will be described in detail in conjunction with the embodiments, to more fully understand the purpose of the present invention, feature And advantage.Although the present invention is described in conjunction with the specific embodiment, it is not intended that the invention be limited to described tool Body embodiment.On the contrary, to may include in the claims in the present invention defined by embodiment in protection domain replace Generation, improvement and equivalent embodiment, belong to protection scope of the present invention.It can be by normal for the technological parameter not marked especially Rule technology carries out.
The present invention the specific steps are:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:It gets out aluminium oxide with the first step Template is to electrode as working electrode, platinized platinum, and saturated calomel electrode is auxiliary electrode, and square-wave pulse is carried out after deposition liquid is added Electro-deposition, deposition is after the completion wash with distilled water to neutral;
The deposition liquid ingredient is:1 part of NiSO4•6H2O, 2 parts of CoSO4•7H2O, H3BO3(NH4)2SO4
The condition of the square-wave pulse electro-deposition is:Continue 30 s in 0 V, then moment add 5 s of potential duration of -2.5 V Square-wave pulse electro-deposition certain time;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 500 ~ 800 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 10 ~ 60min, continue to be passed through Ar and be cooled to room Temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
Embodiment 1:
Step is:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:Prepare deposition liquid, formula is: 262 g/L NiSO4•6H2O and 562 g/L CoSO4•7H2O, 40 g/L H3BO3With 40 g/L (NH4)2SO4;With first step standard Alumina formwork is got ready as working electrode, platinized platinum is to electrode, and saturated calomel electrode is auxiliary electrode, is added after depositing liquid Square wave is that 0 V continues 30 s, and -2.5 V continue to carry out 50 cycles of pulse electrodeposition under 5 s, clear with distilled water after the completion of deposition It is washed till neutrality;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 500 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 10min, continue to be passed through Ar and be cooled to room temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
XRD and TEM characterizations are carried out to the sample prepared by embodiment 1, detect NiCo2O4With carbon nanotube object phase, NiCo2O4/ carbon nano tube compound material is core-shell nano array structure;To NiCo2O4/ carbon nano-tube combination electrode material carries out Constant current charge-discharge test, the specific capacitance value in the case where current density is 1A/g ask 1046.8F/g respectively.
Embodiment 2:
Step is:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:Prepare deposition liquid, formula is: 262 g/L NiSO4•6H2O and 562 g/L CoSO4•7H2O, 40 g/L H3BO3With 40 g/L (NH4)2SO4;With first step standard Alumina formwork is got ready as working electrode, platinized platinum is to electrode, and saturated calomel electrode is auxiliary electrode, is added after depositing liquid Square wave is that 0 V continues 30 s, and -2.5 V continue to carry out 100 cycles of pulse electrodeposition under 5 s, and distilled water is used after the completion of deposition It cleans to neutrality;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 800 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 10min, continue to be passed through Ar and be cooled to room temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
XRD and TEM characterizations are carried out to the sample prepared by embodiment 2, detect NiCo2O4With carbon nanotube object phase, NiCo2O4/ carbon nano tube compound material is core-shell nano array structure;To NiCo2O4/ carbon nano-tube combination electrode material carries out Constant current charge-discharge test, the specific capacitance value in the case where current density is 1A/g ask 1153.9F/g respectively.
Embodiment 3:
Step is:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:Prepare deposition liquid, formula is: 262 g/L NiSO4•6H2O and 562 g/L CoSO4•7H2O, 40 g/L H3BO3With 40 g/L (NH4)2SO4;With first step standard Alumina formwork is got ready as working electrode, platinized platinum is to electrode, and saturated calomel electrode is auxiliary electrode, is added after depositing liquid Square wave is that 0 V continues 30 s, and -2.5 V continue to carry out 100 cycles of pulse electrodeposition under 5 s, and distilled water is used after the completion of deposition It cleans to neutrality;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 600 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 60min, continue to be passed through Ar and be cooled to room temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
XRD and TEM characterizations are carried out to the sample prepared by embodiment 3, detect NiCo2O4With carbon nanotube object phase, NiCo2O4/ carbon nano tube compound material is core-shell nano array structure;To NiCo2O4/ carbon nano-tube combination electrode material carries out Constant current charge-discharge test, the specific capacitance value in the case where current density is 1A/g ask 977.8F/g respectively.
Embodiment 4:
Step is:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:Prepare deposition liquid, formula is: 262 g/L NiSO4•6H2O and 562 g/L CoSO4•7H2O, 40 g/L H3BO3With 40 g/L (NH4)2SO4;With first step standard Alumina formwork is got ready as working electrode, platinized platinum is to electrode, and saturated calomel electrode is auxiliary electrode, is added after depositing liquid Square wave is that 0 V continues 30 s, and -2.5 V continue to carry out 200 cycles of pulse electrodeposition under 5 s, and distilled water is used after the completion of deposition It cleans to neutrality;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 700 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 30min, continue to be passed through Ar and be cooled to room temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
XRD and TEM characterizations are carried out to the sample prepared by embodiment 4, detect NiCo2O4With carbon nanotube object phase, NiCo2O4/ carbon nano tube compound material is core-shell nano array structure;To NiCo2O4/ carbon nano-tube combination electrode material carries out Constant current charge-discharge test, the specific capacitance value in the case where current density is 1A/g ask 1334.2F/g respectively.

Claims (2)

1. a kind of NiCo2O4/ carbon nano-tube combination electrode material, which is characterized in that NiCo2O4/ carbon nano-tube combination electrode material Monomer using carbon nanotube as core, NiCo2O4Nanotube is the nucleocapsid of shell, generally high-sequential nano-tube array.
2. a kind of NiCo as described in claim 12O4/ carbon nano-tube combination electrode material, it is characterised in that preparation process is:
The first step:Porous alumina formwork prepares
The alumina formwork that aperture is 200nm bilaterals is chosen, is 1 μm of copper film in its back side magnetron sputtering a layer thickness, successively Drying is with spare after trimethylsilyl cyanide, ethyl alcohol, distilled water are cleaned by ultrasonic;
Second step:It is prepared by nickel-cobalt alloy nano pipe array
Nickel-cobalt alloy nano pipe array is prepared using square-wave pulse electrodeposition process in electrolytic cell:It gets out aluminium oxide with the first step Template is to electrode as working electrode, platinized platinum, and saturated calomel electrode is auxiliary electrode, and square-wave pulse is carried out after deposition liquid is added Electro-deposition, deposition is after the completion wash with distilled water to neutral;
The deposition liquid ingredient is:1 part of NiSO4•6H2O, 2 parts of CoSO4•7H2O, H3BO3(NH4)2SO4
The condition of the square-wave pulse electro-deposition is:Continue 30 s in 0 V, then moment add 5 s of potential duration of -2.5 V Square-wave pulse electro-deposition certain time;
Third walks:It is prepared by nickel cobalt/carbon nano pipe array
Nickel-cobalt alloy nano pipe array is put into tube furnace, air pressure in tube furnace is repeatedly adjusted to 10KPa after displacement Ar, then 500 ~ 800 DEG C are warming up to, the C of 50ml/min is passed through2H2, stop heating after reacting 10 ~ 60min, continue to be passed through Ar and be cooled to room Temperature;
4th step:NiCo2O4It is prepared by/carbon nano pipe array
Nickel cobalt/carbon nano pipe array is taken out, removal alumina formwork is soaked for a period of time with the NaOH of 1M/L, then uses ethyl alcohol It cleans to neutrality with distilled water, is placed in Muffle furnace after drying, 300 DEG C of heat preservation 2h are warming up to the heating rate of 1 DEG C/min, NiCo is obtained after cooling2O4/ carbon nano pipe array.
CN201810170727.2A 2018-03-01 2018-03-01 A kind of NiCo2O4/ carbon nano-tube combination electrode material and preparation method thereof Expired - Fee Related CN108376614B (en)

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CN110863226A (en) * 2019-11-18 2020-03-06 南通大学 SERS substrate with composite gold and silver nano array structure and preparation method thereof
CN110862078A (en) * 2019-10-16 2020-03-06 江苏镭明新材料科技有限公司 Preparation method of 1D structure carbon nanotube NiCoOOH composite material
CN111307897A (en) * 2020-02-27 2020-06-19 广州钰芯传感科技有限公司 NiCo for enzyme-free detection of glucose2O4/Ni-P composite electrode and preparation method and application thereof
CN111575761A (en) * 2020-05-26 2020-08-25 苏州凌威新能源科技有限公司 Alumina template, highly vertical ordered antimony nanowire array and preparation method thereof
CN113564559A (en) * 2021-07-28 2021-10-29 福州大学 Rapid in-situ preparation method of CNTs @ TC4 composite powder

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