CN104882298A - Method for preparing NiCo2O4/graphene supercapacitor material with microwave method - Google Patents

Method for preparing NiCo2O4/graphene supercapacitor material with microwave method Download PDF

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Publication number
CN104882298A
CN104882298A CN201510213300.2A CN201510213300A CN104882298A CN 104882298 A CN104882298 A CN 104882298A CN 201510213300 A CN201510213300 A CN 201510213300A CN 104882298 A CN104882298 A CN 104882298A
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microwave
super capacitor
dispersion liquid
graphene
nico
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蔡晓庆
沈小平
马连波
季振源
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Jiangsu University
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Jiangsu University
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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
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • 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 belongs to the field of preparation of nano composite materials, and relates to a method for preparing a NiCo2O4/graphene supercapacitor material with a microwave method. The main steps includes: using natural graphite as a raw material, oxidizing with a Hummers method to obtain graphite oxide, ultrasonically dispersing the graphite oxide in water, then adding cobalt chloride and nickel chloride, stirring and then adding urea, continuing to stir, then heating the mixed solution in a microwave reactor to 100 DEG C and carrying out a reflux reaction for 5 to 25 min, thereby obtaining a precursor, and calcining the precursor in an air atmosphere at 300 DEG C for 2h, thereby obtaining a porous flaky NiCo2O4/graphene supercapacitor material. The prepared composite supercapacitor material is synthesized through the microwave method, the preparation method is simple in technology, convenient to operate, high in feasibility, and rapid and efficient, and is easy to realize industrial implementation. The synthesized NiCo2O4 is tightly attached to the graphene, and excellent electrochemical performance is represented.

Description

A kind of microwave method prepares NiCo 2o 4the method of/Graphene super capacitor material
Technical field
The invention belongs to Nano-composite materials field, particularly a kind of microwave method prepares NiCo 2o 4the method of/Graphene super capacitor material.
Background technology
Due to the generation of energy crisis and going from bad to worse of biological environment, people are to Novel clean, and the demand of regenerative resource continues to increase.But these energy often have fluctuation and intermittence, to utilize these energy just to need the high performance energy storage device of development and Design with ensureing stability and high efficiency.Ultracapacitor has higher power density, fast charge-discharge performance, the cycle life of overlength, the features such as wider serviceability temperature scope and environmental protection, has become one of focus of research energy storage device.Ultracapacitor can be divided into two classes according to energy storage mechnism.One class is double electric layer capacitor, also has a class to be fake capacitance capacitor.The electrode material of double electric layer capacitor is mainly porous carbon materials, but amasss compared with small specific surface and double electric layer capacitor that porosity causes carbon based material to be prepared has less ratio capacitance value, therefore can not meet actual utilization.And fake capacitance capacitor is by redox reaction occurs at electrode and electrolyte liquor interface, thus obtain larger specific capacitance.Common fake capacitance electrode material has metal oxide and conducting polymer.Metal oxide and conducting polymer also exist the defect such as conductivity and cyclical stability difference, make the application of this two classes electrode material receive certain restriction.In recent years, research finds electrode active material and material with carbon element compound is improve the effective ways of super capacitor material electrochemical performance.
Graphene is that one forms two cellular new carbon by carbon atom.Compared with other material with carbon elements, Graphene has higher specific area and more excellent electric conductivity, makes Graphene become optimal nanomaterial loadings body.Therefore, by Graphene and electrode active material compound, the chemical property of electrode material can effectively be improved.Cobalt acid nickel, due to containing abundant valence state, has the fake capacitance performance larger than single transition metal oxide.At present, be there is minority report in the preparation of super capacitor material of cobalt acid nickel and Graphene compound.Mainly comprise hydro thermal method, bath oiling, primary reconstruction method etc.But these method complicated process of preparation, the reaction time is long, and temperature is high, and energy consumption is many, and production cost is high, is unfavorable for that actual scale is used.And microwave method prepares electrochemical active material synthesis technique simply, easy to operate, feasibility is high, and the reaction time is short, and efficiency is high, is easy to suitability for industrialized production.The present invention utilizes microwave method by cobalt acid nickel and Graphene compound, prepares porous flake composite material.This porous flake NiCo 2o 4/ Graphene super capacitor material, shows excellent chemical property.
Summary of the invention
The present invention has considered produced problem in prior art, and object is to provide a kind of microwave method to prepare NiCo 2o 4the method of/Graphene super capacitor material, adopts following technical scheme:
(1) take native graphite as raw material, be oxidized by the Hummers method improved and obtain graphite oxide;
(2) by graphite oxide ultrasonic dissolution in water, form homogeneous dispersion liquid, add nickel source and cobalt source subsequently, fully stir until dissolve; Add urea again, stir, obtain mixed dispersion liquid;
(3) by the mixed dispersion liquid of step (2) gained, be placed in microwave reactor, microwave heating back flow reaction, after reaction terminates, naturally cool;
(4) mixture of step (3) gained is carried out centrifugal treating, products therefrom deionized water and absolute ethyl alcohol wash respectively, dry, and calcining, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
In above-mentioned steps (2), in described dispersion liquid, the concentration of graphite oxide is 0.3 ~ 0.8 g/L;
Described nickel source is nickel chloride, and in mixed dispersion liquid, the concentration of nickel chloride is 2.5 ~ 7.5 g/L;
Described cobalt source is cobalt chloride, and in mixed dispersion liquid, the concentration of cobalt chloride is 5.0 ~ 15.0 g/L;
Cobalt chloride is 2:1 with the ratio of the amount of substance of nickel chloride;
In mixed dispersion liquid, the concentration of urea is 40 ~ 50 g/L.
In above-mentioned steps (3), microwave heating power is 400 W, the temperature 100 DEG C of described microwave heating reaction, reflux time 5-25min.
In above-mentioned steps (4), the mode of described calcining is: in air atmosphere, calcine 2h at 300 DEG C; The mode of described drying is: vacuumize 24h at 45 DEG C.
Beneficial effect of the present invention is:
The present invention mainly improves traditional technique preparing cobalt acid nickel/graphene composite material from mode of heating.Microwave heating is different from traditional heating, and be the body heating that material is caused by dielectric loss at elect magnetic field, speed is fast, homogeneous heating, and without heating hysteresis effect
The invention solves the deficiency existed in traditional handicraft, technique is simple, and easy to operate, feasibility is high, rapidly and efficiently, is easy to industrializing implementation.The NiCo of preparation 2o 4/ Graphene super capacitor material list reveals excellent chemical property, is applicable to electrode material for super capacitor.
Accompanying drawing explanation
Fig. 1 is NiCo prepared by the embodiment of the present invention 1 2o 4x-ray diffraction (XRD) collection of illustrative plates of/Graphene super capacitor material, wherein abscissa is the angle of diffraction (2 θ), and unit is degree, and ordinate is diffracted intensity, and unit is cps.
Fig. 2 is NiCo prepared by the embodiment of the present invention 1 2o 4/ Graphene super capacitor material power spectrum (EDS) figure.Wherein abscissa is energy, and unit is KeV, and ordinate is intensity, and unit is cps.
Fig. 3 is NiCo prepared by the embodiment of the present invention 1 2o 4transmission electron microscope (TEM) photo of/Graphene super capacitor material.Fig. 4 is NiCo prepared by the embodiment of the present invention 1 2o 4/ Graphene super capacitor material is 10 A g in current density -1time
Cyclical stability figure.Wherein abscissa is cycle-index, and ordinate is ratio capacitance, and unit is F g -1.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
Embodiment 1:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Mixed liquor is transferred in microwave reactor, back flow reaction 15 min at microwave heating to 100 DEG C.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Fig. 1 is the XRD figure of product, except observing NiCo in figure 2o 4diffraction maximum outside, there is no other diffraction maximum, illustrate target product synthesized and no coupling product produce.
Fig. 2 is the EDS collection of illustrative plates of product, and containing Co, Ni, C, O element in sample, wherein C element derives from Graphene, and oxygen element derives from the oxygen-containing functional group of redox graphene remnants.
As can be seen from Figure 3, the NiCo of porous flake 2o 4be attached to the surface of graphene film uniformly, independent NiCo is not observed in periphery 2o 4nanometer sheet exists, and porous flake NiCo is described 2o 4adhere to well with Graphene, successfully prepared combination electrode material.
Fig. 4 is NiCo 2o 4/ Graphene super capacitor material current density in 3M KOH solution is 10 A g -1time cyclical stability figure.After discharge and recharge 1000 times, ratio capacitance is 846 F g -1, only lose 6.3%, illustrate that this composite material has more excellent stable circulation performance.
Embodiment 2:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 0.50 mmol NiCl is added 2 .6H 2o and 1.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Mixed liquor is transferred in microwave reactor, back flow reaction 15 min at microwave heating to 100 DEG C.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 3:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 0.75 mmol NiCl is added 2 .6H 2o and 1.50 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Mixed liquor is transferred in microwave reactor, back flow reaction 15 min at microwave heating to 100 DEG C.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 4:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.25 mmol NiCl are added 2 .6H 2o and 2.50 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 100 DEG C reaction response 15 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 5:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 80 DEG C reaction response 15 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 6:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 140 DEG C reaction response 15 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 7:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 180 DEG C reaction response 15 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 8:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 100 DEG C reaction response 5 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 9:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 100 DEG C reaction response 10 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize 24h at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 10:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1 h, then adds the urea of 30 mmol wherein, stir 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 100 DEG C reaction response 20 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Embodiment 11:
20 mg graphite oxides are disperseed in 40 mL deionized waters, the uniform dispersion liquid of ultrasonic formation.Then 1.00 mmol NiCl are added 2 .6H 2o and 2.00 mmol CoCl 2 .6H 2o, fully stirs 1h, then adds the urea of 30 mmol wherein, stirs 1 h in addition.Be transferred to by mixed liquor in microwave reactor, reflux at microwave heating to 100 DEG C reaction response 25 min.The product of centrifugation gained, and with deionized water and absolute ethanol washing 3 times, finally vacuumize at 45 DEG C.Using dried material as presoma, in air atmosphere, calcine 300 DEG C, 2 h, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned execution mode; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.

Claims (6)

1. a microwave method prepares NiCo 2o 4the method of/Graphene super capacitor material, is characterized in that, comprise the steps:
(1) take native graphite as raw material, be oxidized by the Hummers method improved and obtain graphite oxide;
(2) by graphite oxide ultrasonic dissolution in water, form homogeneous dispersion liquid, add nickel source and cobalt source subsequently, fully stir until dissolve; Add urea again, stir, obtain mixed dispersion liquid;
(3) by the mixed dispersion liquid of step (2) gained, be placed in microwave reactor, microwave heating back flow reaction, after reaction terminates, naturally cool;
(4) mixture of step (3) gained is carried out centrifugal treating, products therefrom deionized water and absolute ethyl alcohol wash respectively, dry, and calcining, can obtain porous flake NiCo 2o 4/ Graphene super capacitor material.
2. a kind of microwave method as claimed in claim 1 prepares NiCo 2o 4the method of/Graphene super capacitor material, is characterized in that, in step (2), in described dispersion liquid, the concentration of graphite oxide is 0.3 ~ 0.8 g/L.
3. a kind of microwave method as claimed in claim 1 prepares NiCo 2o 4the method of/Graphene super capacitor material, it is characterized in that, described nickel source is nickel chloride, in mixed dispersion liquid, the concentration of nickel chloride is 2.5 ~ 7.5 g/L, described cobalt source is cobalt chloride, in mixed dispersion liquid, the concentration of cobalt chloride is 5.0 ~ 15.0 g/L, and cobalt chloride is 2:1 with the ratio of the amount of substance of nickel chloride, and in mixed dispersion liquid, the concentration of urea is 40 ~ 50 g/L.
4. a kind of microwave method as claimed in claim 1 prepares NiCo 2o 4the method of/Graphene super capacitor material, is characterized in that, in step (3), microwave heating power is 400 W, the temperature 100 DEG C of described microwave heating reaction, reflux time 5-25min.
5. a kind of microwave method as claimed in claim 1 prepares NiCo 2o 4the method of/Graphene super capacitor material, is characterized in that, in step (4), the mode of described calcining is: in air atmosphere, calcine 2h at 300 DEG C.
6. a kind of microwave method as claimed in claim 1 prepares NiCo 2o 4the method of/Graphene super capacitor material, is characterized in that, in step (4), the mode of described drying is: vacuumize 24h at 45 DEG C.
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106169384A (en) * 2016-08-30 2016-11-30 江苏大学 A kind of three-dimensional meso-hole NiCo2o4the preparation method of/nitrogen-doped graphene combination electrode material
CN106683901A (en) * 2016-12-20 2017-05-17 四川大学 Preparation method of supercapacitor electrode material NixCo3-xO4
CN106898493A (en) * 2017-02-06 2017-06-27 江苏大学 Hollow nucleocapsid NiCo2O4The preparation method of the flexible super electric materials of RGO
CN106910647A (en) * 2017-04-24 2017-06-30 武汉科技大学 Compound cobalt acid nickel nano-wire array material of graphene aerogel and preparation method thereof
CN107393725A (en) * 2017-06-20 2017-11-24 中国科学院福建物质结构研究所 A kind of carbon material supported NiCo of porous, electrically conductive2O4Composite and its preparation method and application
CN107591255A (en) * 2017-09-08 2018-01-16 南陵县生产力促进中心 A kind of ultracapacitor graphene/CuFe2O4Composite nano materials and preparation method thereof
CN107680831A (en) * 2017-08-23 2018-02-09 江苏大学 A kind of hollow corn shape Co3O4@NiCo2O4The preparation method of/nitrogen-doped graphene flexible electrode material
CN108380238A (en) * 2018-02-07 2018-08-10 大连工业大学 A kind of cobalt acid Raney nickel and preparation method thereof for sodium borohydride hydrolysis
CN108387631A (en) * 2018-01-22 2018-08-10 中国科学院兰州化学物理研究所 A kind of graphene-supported cobalt acid nanosized nickel rods compound and its application
CN108558369A (en) * 2018-05-18 2018-09-21 郦璋 A kind of preparation method of composite ceramics capacitance material
CN110227514A (en) * 2019-06-28 2019-09-13 江西理工大学 It is a kind of to grow the method for metal phosphide and its product of preparation and application on the surface of graphene using microwave method
CN112133568A (en) * 2020-08-11 2020-12-25 威海广泰空港设备股份有限公司 Super capacitor capable of being used for airport ferry vehicle and manufacturing method of electrode of super capacitor
CN113213555A (en) * 2021-05-19 2021-08-06 国网天津市电力公司电力科学研究院 Needle-like NiCo2O4Preparation method of super-electric material

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CN106169384A (en) * 2016-08-30 2016-11-30 江苏大学 A kind of three-dimensional meso-hole NiCo2o4the preparation method of/nitrogen-doped graphene combination electrode material
CN106683901A (en) * 2016-12-20 2017-05-17 四川大学 Preparation method of supercapacitor electrode material NixCo3-xO4
CN106898493B (en) * 2017-02-06 2019-01-08 江苏大学 The preparation method of the hollow super electric material of nucleocapsid NiCo2O4-RGO flexibility
CN106898493A (en) * 2017-02-06 2017-06-27 江苏大学 Hollow nucleocapsid NiCo2O4The preparation method of the flexible super electric materials of RGO
CN106910647A (en) * 2017-04-24 2017-06-30 武汉科技大学 Compound cobalt acid nickel nano-wire array material of graphene aerogel and preparation method thereof
CN107393725A (en) * 2017-06-20 2017-11-24 中国科学院福建物质结构研究所 A kind of carbon material supported NiCo of porous, electrically conductive2O4Composite and its preparation method and application
CN107393725B (en) * 2017-06-20 2019-08-20 中国科学院福建物质结构研究所 A kind of carbon material supported NiCo of porous, electrically conductive2O4Composite material and its preparation method and application
CN107680831A (en) * 2017-08-23 2018-02-09 江苏大学 A kind of hollow corn shape Co3O4@NiCo2O4The preparation method of/nitrogen-doped graphene flexible electrode material
CN107591255A (en) * 2017-09-08 2018-01-16 南陵县生产力促进中心 A kind of ultracapacitor graphene/CuFe2O4Composite nano materials and preparation method thereof
CN108387631A (en) * 2018-01-22 2018-08-10 中国科学院兰州化学物理研究所 A kind of graphene-supported cobalt acid nanosized nickel rods compound and its application
CN108380238A (en) * 2018-02-07 2018-08-10 大连工业大学 A kind of cobalt acid Raney nickel and preparation method thereof for sodium borohydride hydrolysis
CN108558369A (en) * 2018-05-18 2018-09-21 郦璋 A kind of preparation method of composite ceramics capacitance material
CN110227514A (en) * 2019-06-28 2019-09-13 江西理工大学 It is a kind of to grow the method for metal phosphide and its product of preparation and application on the surface of graphene using microwave method
CN110227514B (en) * 2019-06-28 2021-12-10 江西理工大学 Method for growing metal phosphide on surface of graphene by microwave method, product prepared by method and application of product
CN112133568A (en) * 2020-08-11 2020-12-25 威海广泰空港设备股份有限公司 Super capacitor capable of being used for airport ferry vehicle and manufacturing method of electrode of super capacitor
CN113213555A (en) * 2021-05-19 2021-08-06 国网天津市电力公司电力科学研究院 Needle-like NiCo2O4Preparation method of super-electric material

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Application publication date: 20150902