CN103531365A - Preparation method for cobalt-nickel oxide composite material as supercapacitor electrode material - Google Patents

Preparation method for cobalt-nickel oxide composite material as supercapacitor electrode material Download PDF

Info

Publication number
CN103531365A
CN103531365A CN201310476178.9A CN201310476178A CN103531365A CN 103531365 A CN103531365 A CN 103531365A CN 201310476178 A CN201310476178 A CN 201310476178A CN 103531365 A CN103531365 A CN 103531365A
Authority
CN
China
Prior art keywords
cobalt
nickel oxide
oxide composite
composite material
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310476178.9A
Other languages
Chinese (zh)
Other versions
CN103531365B (en
Inventor
刘锡建
肖稳发
王远强
孙彦刚
徐菁利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai University of Engineering Science
Original Assignee
Shanghai University of Engineering Science
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai University of Engineering Science filed Critical Shanghai University of Engineering Science
Priority to CN201310476178.9A priority Critical patent/CN103531365B/en
Publication of CN103531365A publication Critical patent/CN103531365A/en
Application granted granted Critical
Publication of CN103531365B publication Critical patent/CN103531365B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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 relates to a preparation method for a cobalt-nickel oxide composite material as a supercapacitor electrode material. The preparation method includes the following steps: (1) nickel acetate tetrahydrate and cobalt acetate tetrahydrate are dissolved into the mixture of glycol and water, glucose is added after stirring, stirring is then continued, and thereby mixed solution is prepared; (2) the mixed solution is poured into a hydrothermal reaction kettle to react under 100 DEG C to 200 DEG C for 2 to 48 hours, the hydrothermal reaction kettle is then cooled to room temperature, and thereby reaction product is obtained; (3) the reaction product obtained in step 2 is centrifuged, washed and dried, the dried sample is calcined, and thereby the cobalt-nickel oxide composite material is obtained. Compared with the prior art, the method is simple, environment-friendly and low-cost, and is suitable for mass production, and the prepared hydrangea-shaped cobalt-nickel oxide electrode material has high specific capacitance, and is an excellent supercapacitor electrode material.

Description

The preparation method of electrode material for super capacitor cobalt-nickel oxide composite material
Technical field
The present invention relates to a kind of preparation method of electrode material, especially relate to a kind of preparation method of electrode material for super capacitor cobalt-nickel oxide composite material.
Background technology
Along with social development, people are also more to energy demand, but because traditional fossil energy can not be regenerated, and bring serious pollution to environment, so people are seeking the new forms of energy eco-friendly, reproducible, utilance is high.Follow the exploitation of new forms of energy, also, in the urgent need to developing new efficient, low cost, environmental protection, high performance energy conversion and stocking system, therefore, ultracapacitor arises at the historic moment.Ultracapacitor also claims electrochemical capacitor, it is a kind of capacitor more excellent than traditional capacitor in performance, than traditional high hundreds of times of capacitor energy density, have again simultaneously power density high, can fast charging and discharging, the advantage such as long service life, maintenance be simple, be widely used in the fields such as electric automobile, information technology, mobile communication equipment, science and techniques of defence, thereby caused the extensive concern (China of standing in great numbers of researcher, Deng. application chemical industry, 2011,40 (6): 1095-1099; Pang Xu, etc. sufacing, 2009,38 (3): 77-79; Zhang Zhian, material Leader, 2004,18 (7): 30-33).
The electrode material of ultracapacitor mainly contains three kinds: material with carbon element, conducting polymer, transition metal oxide.Wherein transition metal oxide, owing to having high ratio electric capacity and excellent cyclic reversibility, is therefore considered to optimal electrode material.In transition metal oxide electrode material, because the oxide of cobalt and nickel has cheaply, chemical property is good, higher than electric capacity, the easy advantage such as preparation, thus cause people's concern widely.
Because cobalt/cobalt oxide and nickel oxide have different structures, can cuniculate existence by the material of two kinds of compound rear preparations of oxide, the electrode material after often compound has chemical property and improves significantly.Existing a lot of documents prove that compound cobalt-nickel oxide electrode can improve chemical property (Ye Lei. Jilin University, 2013 of electrode significantly; Mo Liping. Northwest Normal University, 2008; Former Changzhou. Xinjiang University, 2006), but the combination electrode electric capacity that the method for different preparations obtains differs larger, therefore still needs and further studies the preparation of cobalt-nickel oxide combination electrode, thus further improve the chemical property of electrode.
Chinese patent CN102874884A has announced a kind of preparation method of electrode material for super capacitor nickel oxide, comprising: Nickelous nitrate hexahydrate Ni (NO3) 26H2O and polyvinylpyrrolidone PVP are dissolved in first alcohol and water, and stir, make mixed solution; Then above-mentioned mixed solution is poured in polytetrafluoroethylene hydrothermal reaction kettle, under 150-200 ℃ of hydrothermal condition, reacted 3-24 hour, rear cooling reactor is to room temperature, and centrifugal resulting product, washs, dry; By dried sample calcining; Resulting sample is electrode material for super capacitor.Method of the present invention is simple, environmental protection, and low cost, is suitable for large-scale production, and the porous flower-shape Ni O electrode material preparing not only has compared with high specific capacitance, has good electrochemical stability simultaneously, is a kind of good electrode material for super capacitor.But the method has adopted methyl alcohol as reaction dissolvent, and methyl alcohol is a kind of volatile toxic solvent, because boiling point is lower, at high temperature reaction easily produces dangerous.
Summary of the invention
Object of the present invention is exactly that a kind of preparation method of electrode material for super capacitor cobalt-nickel oxide composite material is provided in order to overcome the defect that above-mentioned prior art exists, simultaneously can be simple, and fast, prepare on a large scale this material and meet practical application.
Nickel oxide electronic conductivity is poor, so utilance is not high, for improving its utilance and chemical property, need to adulterate and surface modification treatment to nickel oxide.Quantity research shows greatly, and Co is a kind of additive of effective raising nickel oxide chemical property.
Object of the present invention can be achieved through the following technical solutions:
A preparation method for electrode material for super capacitor cobalt-nickel oxide composite material, comprises the following steps:
(1) by nickel acetate tetrahydrate (C 4h 6niO 44H 2o) with four hydration cobalt acetate (C 4h 6coO 44H 2o) be dissolved in the mixed liquor of ethylene glycol and water, stir and add glucose after 5-60 minute, then continue to stir 5-60 minute, make mixed solution;
(2) above-mentioned mixed solution is poured in hydrothermal reaction kettle, hydrothermal reaction kettle is put into air dry oven, react 2-48 hour at 100-200 ℃, then cooling water heat reactor, to room temperature, obtains product;
(3) centrifugation step (2) gained product, and washing, dry, put into Muffle furnace by dried sample and calcine, and obtains cobalt-nickel oxide composite material.
In step (1), nickel acetate tetrahydrate and four mixtures of hydration cobalt acetate and the proportioning of glucose are 2～8mmol/0.001～0.05g.
In step (1), the mol ratio of nickel acetate tetrahydrate and four hydration cobalt acetates is 1:9～9:1.
In step (1), the volume ratio of ethylene glycol and water is 20:1～0.05:1.
Described hydrothermal reaction kettle is the hydrothermal reaction kettle of polytetrafluoroethylsubstrate substrate.
In step (2), the compactedness of mixed solution in hydrothermal reaction kettle is 80%.
Washing described in step (3) is for washing with deionized water and ethanol respectively.
The temperature of the calcining that step (3) is described is 300-500 ℃, and the time of calcining is 20-600 minute.
Compared with prior art, the present invention has the following advantages:
1, the cobalt-nickel oxide composite material preparing by method of the present invention is silk ball flower-like structure, not only have compared with high specific capacitance, than electric capacity up to 480F/g, there is good electrochemical stability simultaneously, after 2000 circulations, less than 5%, better than single nickel oxide cyclical stability than capacitance loss, be a kind of good electrode material for super capacitor.
2, simple, the environmental protection of the preparation method of cobalt-nickel oxide of the present invention, cost are low.The surfactant that reaction adopts is glucose, glucose has low price, the features such as raw material is easy to get, glucose mainly plays the pattern of controlling product in reaction, and glucose molecule is also one of constituent of laminated structure, after roasting, become carbon dioxide, therefore in cobalt-nickel oxide laminated structure, there are many pores, therefore improved greatly the specific surface of cobalt-nickel oxide composite material, thereby greatly improved it, compare electric capacity.The polyvinylpyrrolidone PVP adopting than Chinese patent CN102874884A is as surfactant, and glucose consumption is few, and low price.The reaction dissolvent that the present invention adopts is water and ethylene glycol, and ethylene glycol boiling point is high, and toxicity is low, has the features such as comparatively safe environmental protection.And Chinese patent CN102874884A has adopted water and methyl alcohol as reaction dissolvent, and methyl alcohol is a kind of volatile toxic solvent, because boiling point is lower, at high temperature reaction easily produces dangerous.
Accompanying drawing explanation
Fig. 1 is the low power SEM picture of the cobalt-nickel oxide composite material prepared in the present invention;
Fig. 2 is the high power SEM picture of the cobalt-nickel oxide composite material prepared in the present invention;
Fig. 3 is the cyclic voltammogram of the cobalt-nickel oxide composite material prepared in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
(1) take 2.5mmo1 nickel acetate tetrahydrate (C 4h 6niO 44H 2o) and 2.5mmol tetra-hydration cobalt acetate (C 4h 6coO 44H 2o) be dissolved in the mixed liquor of 10mL ethylene glycol and 36mL water composition, stir 20 minutes, nickel acetate dissolves completely, then adds 0.005g glucose, then continues to stir 10 minutes, makes mixed solution:
(2) above-mentioned mixed solution is poured in polytetrafluoroethylene hydrothermal reaction kettle, kept 80% compactedness, described hydrothermal reaction kettle is put into air dry oven, react 16 hours at 180 ℃, then cooling reactor is to room temperature.
(3) centrifugal resulting product, respectively with deionized water and ethanol washing, and dry; Dried sample is put into Muffle furnace 450 ℃ of calcinings 2 hours; Resulting final sample is ultracapacitor cobalt-nickel oxide electrode material.
The SEM figure of the cobalt-nickel oxide composite material that the present embodiment makes as shown in Figure 1 and Figure 2, cobalt-nickel oxide assembling has formed the flower of similar silk ball shape one by one, the diameter of flower is greatly about 5.5 μ m, and flower is that this structure can increase the specific area of active material greatly by mutual stacking the forming of nanometer sheet.
The cyclic voltammogram of the cobalt-nickel oxide composite material that the present embodiment makes as shown in Figure 3, as can be seen from the figure, in sweep speed, be 50mV/s, the ratio electric capacity of the cobalt-nickel oxide electrode material of preparation is up to 480F/g, therefore, adopt the inventive method, can greatly improve the ratio electric capacity of nickel oxide electrode material.And the surfactant adopting is cheap and easy to get, and consumption is few, the comparatively safe and environmental protection of reaction dissolvent.
Embodiment 2
(1) take 3mmol nickel acetate tetrahydrate (C 4h 6niO 44H 2o) and 4mmol tetra-hydration cobalt acetate (C 4h 6coO 44H 2o) be dissolved in the mixed liquor of 23mL ethylene glycol and 23mL water composition, stir 10 minutes, nickel acetate dissolves completely, then adds 0.010g glucose, then continues to stir 20 minutes, makes mixed solution;
(2) above-mentioned mixed solution is poured in polytetrafluoroethylene hydrothermal reaction kettle, kept 80% compactedness, described hydrothermal reaction kettle is put into air dry oven, react 24 hours at 160 ℃, then cooling reactor is to room temperature.
(3) centrifugal resulting product, respectively with deionized water and ethanol washing, and dry; Dried sample is put into Muffle furnace 450 ℃ of calcinings 1 hour; Resulting final sample is ultracapacitor cobalt-nickel oxide electrode material.
Embodiment 3
(1) take 2mmol nickel acetate tetrahydrate (C 4h 6niO 44H 2o) and 3mmol tetra-hydration cobalt acetate (C 4h 6coO 44H 2o) be dissolved in the mixed liquor of 30mL ethylene glycol and 16mL water composition, stir 30 minutes, nickel acetate dissolves completely, then adds 0.005g glucose, then continues to stir 20 minutes, makes mixed solution;
(2) above-mentioned mixed solution is poured in polytetrafluoroethylene hydrothermal reaction kettle, kept 80% compactedness, described hydrothermal reaction kettle is put into air dry oven, react 12 hours at 180 ℃, then cooling reactor is to room temperature.
(3) centrifugal resulting product, respectively with deionized water and ethanol washing, and dry; Dried sample is put into Muffle furnace 450 ℃ of calcinings 3 hours; Resulting final sample is ultracapacitor cobalt-nickel oxide electrode material.
Embodiment 4
A preparation method for electrode material for super capacitor cobalt-nickel oxide composite material, comprises the following steps:
(1) by 0.2mol nickel acetate tetrahydrate (C 4h 6niO 44H 2o) with 1.8mol tetra-hydration cobalt acetate (C 4h 6coO 44H 2o) be dissolved in the mixed liquor of 20ml ethylene glycol and 1ml water, stir after 5 minutes and add 0.001g glucose, then continue to stir 5 minutes, make mixed solution;
(2) above-mentioned mixed solution is poured in the hydrothermal reaction kettle of polytetrafluoroethylsubstrate substrate, the compactedness of mixed solution in hydrothermal reaction kettle is 80%, and hydrothermal reaction kettle is put into air dry oven, reacts 48 hours at 100 ℃, then cooling water heat reactor, to room temperature, obtains product;
(3) centrifugation step (2) gained product, and respectively with deionized water and ethanol washing, dry, dried sample is put into Muffle furnace and calcine, the temperature of calcining is 300 ℃, the time of calcining is 600 minutes, obtains cobalt-nickel oxide composite material.
Embodiment 5
A preparation method for electrode material for super capacitor cobalt-nickel oxide composite material, comprises the following steps:
(1) by 7.2mol nickel acetate tetrahydrate (C 4h 6niO 44H 2o) with 0.8mol tetra-hydration cobalt acetate (C 4h 6coO 44H 2o) be dissolved in the mixed liquor of 5ml ethylene glycol and 100ml water, stir after 60 minutes and add 0.05g glucose, then continue to stir 60 minutes, make mixed solution;
(2) above-mentioned mixed solution is poured in the hydrothermal reaction kettle of polytetrafluoroethylsubstrate substrate, the compactedness of mixed solution in hydrothermal reaction kettle is 80%, and hydrothermal reaction kettle is put into air dry oven, reacts 2 hours at 200 ℃, then cooling water heat reactor, to room temperature, obtains product;
(3) centrifugation step (2) gained product, and respectively with deionized water and ethanol washing, dry, dried sample is put into Muffle furnace and calcine, the temperature of calcining is 500 ℃, the time of calcining is 20 minutes, obtains cobalt-nickel oxide composite material.

Claims (9)

1. a preparation method for electrode material for super capacitor cobalt-nickel oxide composite material, is characterized in that, the method comprises the following steps:
(1) nickel acetate tetrahydrate and four hydration cobalt acetates are dissolved in the mixed liquor of ethylene glycol and water, after stirring, add glucose, then continue to stir, make mixed solution;
(2) above-mentioned mixed solution is poured in hydrothermal reaction kettle, reacted 2-48 hour at 100-200 ℃, then cooling water heat reactor, to room temperature, obtains product;
(3) centrifugation step (2) gained product, and washing, dry, by dried sample calcining, obtain cobalt-nickel oxide composite material.
2. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, it is characterized in that, in step (1), nickel acetate tetrahydrate and four mixtures of hydration cobalt acetate and the proportioning of glucose are 2～8mmol/0.001～0.05g.
3. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, in step (1), the mol ratio of nickel acetate tetrahydrate and four hydration cobalt acetates is 1:9～9:1.
4. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, in step (1), the volume ratio of ethylene glycol and water is 20:1～0.05:1.
5. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, the hydrothermal reaction kettle that described hydrothermal reaction kettle is polytetrafluoroethylsubstrate substrate.
6. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, in step (2), the compactedness of mixed solution in hydrothermal reaction kettle is 80%.
7. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, the described washing of step (3) is use deionized water and ethanol washing respectively.
8. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, the temperature of the calcining that step (3) is described is 300-500 ℃, and the time of calcining is 20-600 minute.
9. the preparation method of a kind of electrode material for super capacitor cobalt-nickel oxide composite material according to claim 1, is characterized in that, the cobalt-nickel oxide composite material that step (3) makes is the silk ball flower-like structure being assembled into by nanometer sheet.
CN201310476178.9A 2013-10-12 2013-10-12 The preparation method of electrode material for super capacitor cobalt-nickel oxide composite material Active CN103531365B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310476178.9A CN103531365B (en) 2013-10-12 2013-10-12 The preparation method of electrode material for super capacitor cobalt-nickel oxide composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310476178.9A CN103531365B (en) 2013-10-12 2013-10-12 The preparation method of electrode material for super capacitor cobalt-nickel oxide composite material

Publications (2)

Publication Number Publication Date
CN103531365A true CN103531365A (en) 2014-01-22
CN103531365B CN103531365B (en) 2016-04-27

Family

ID=49933299

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310476178.9A Active CN103531365B (en) 2013-10-12 2013-10-12 The preparation method of electrode material for super capacitor cobalt-nickel oxide composite material

Country Status (1)

Country Link
CN (1) CN103531365B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103887082A (en) * 2014-03-17 2014-06-25 湖州师范学院 Method for growing hexagonal Co(OH)2 on surface of metal foamed nickel
CN105513836A (en) * 2016-01-14 2016-04-20 河南师范大学 Preparation method of supercapacitor electrode material nickel and cobalt composite nanometer oxide
RU2624466C1 (en) * 2016-09-06 2017-07-04 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет" (СПбГУ) Method of synthesis of layer of electroactive substance for electrodes of supercondensors on basis of nanocomposites from metal-oxygenic compounds of cobalt and nickel
CN106971856A (en) * 2017-05-05 2017-07-21 商洛学院 A kind of preparation method of carbon coating amorphous nickel cobalt oxide nano-sheet electrode material
CN109742333A (en) * 2018-12-03 2019-05-10 阜阳师范学院 A kind of preparation method of the PEG auxiliary synthesis compound micro-flowers structural material of CoMoO4@NiMoO4
CN113023793A (en) * 2021-03-24 2021-06-25 浙江工业大学 Cobalt-nickel-vanadium-oxygen electrode material and preparation method thereof
CN114335472A (en) * 2021-12-30 2022-04-12 燕山大学 Cobalt-manganese bimetallic MOFs derivative material and preparation method and application thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106098414B (en) * 2016-07-27 2018-06-01 河南师范大学 The method of one step hydro thermal method synthesizing graphite alkene-nickel hydroxide compound electrode of super capacitor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102709060A (en) * 2012-06-18 2012-10-03 重庆大学 High-performance nickel-cobalt oxide composite nanowire film for super capacitor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102709060A (en) * 2012-06-18 2012-10-03 重庆大学 High-performance nickel-cobalt oxide composite nanowire film for super capacitor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LING WANG等: "Hydrothermal synthesis and electrochemical performance of NiO microspheres with different nanoscale building blocks", 《JOURNAL OF SOLID STATE CHEMISTRY》 *
陈旋: "《硕士研究生学位论文》", 31 December 2011 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103887082A (en) * 2014-03-17 2014-06-25 湖州师范学院 Method for growing hexagonal Co(OH)2 on surface of metal foamed nickel
CN105513836A (en) * 2016-01-14 2016-04-20 河南师范大学 Preparation method of supercapacitor electrode material nickel and cobalt composite nanometer oxide
CN105513836B (en) * 2016-01-14 2018-07-24 河南师范大学 A kind of preparation method of electrode material for super capacitor nickel, cobalt composite nanometer oxide
RU2624466C1 (en) * 2016-09-06 2017-07-04 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет" (СПбГУ) Method of synthesis of layer of electroactive substance for electrodes of supercondensors on basis of nanocomposites from metal-oxygenic compounds of cobalt and nickel
CN106971856A (en) * 2017-05-05 2017-07-21 商洛学院 A kind of preparation method of carbon coating amorphous nickel cobalt oxide nano-sheet electrode material
CN106971856B (en) * 2017-05-05 2019-01-08 商洛学院 A kind of preparation method of carbon coating amorphous nickel cobalt oxide nano-sheet electrode material
CN109742333A (en) * 2018-12-03 2019-05-10 阜阳师范学院 A kind of preparation method of the PEG auxiliary synthesis compound micro-flowers structural material of CoMoO4@NiMoO4
CN113023793A (en) * 2021-03-24 2021-06-25 浙江工业大学 Cobalt-nickel-vanadium-oxygen electrode material and preparation method thereof
CN113023793B (en) * 2021-03-24 2022-09-02 浙江工业大学 Cobalt-nickel-vanadium-oxygen electrode material and preparation method thereof
CN114335472A (en) * 2021-12-30 2022-04-12 燕山大学 Cobalt-manganese bimetallic MOFs derivative material and preparation method and application thereof

Also Published As

Publication number Publication date
CN103531365B (en) 2016-04-27

Similar Documents

Publication Publication Date Title
CN103531365B (en) The preparation method of electrode material for super capacitor cobalt-nickel oxide composite material
CN103219169B (en) A kind of preparation method of electrode material for super capacitor carbon cladding nickel oxide NiO/C
CN103594246A (en) Preparation method for electrode material of porous NiCo2O4 nanowire array supercapacitor
CN103107025A (en) Preparation method of supercapacitor electrode material NiCo2O4
CN102903533A (en) Method for preparing porous hybridization NiO/Co3O4 electrode material of super capacitor
CN103553151B (en) Preparation method of super capacitor electrode material nickel oxide,
CN108807001B (en) Spherical nickel cobaltate-cerium dioxide composite electrode material with multi-level structure and preparation method thereof
CN107221448B (en) A kind of high-performance super capacitor electrode material PANI/CeO2/Ni(OH)2Multistage microballoon and preparation method thereof
CN104167303B (en) Mesopore vanadium oxide/carbon composite nano material and preparation method thereof
CN105529472A (en) Co-N double-doped flaky porous two-dimensional carbon material and preparation method thereof
CN103811189A (en) Preparation method of cobalt molybdate and graphene nanocomposite
CN104821238A (en) Method for preparing electrode material molybdate for super capacitor and application thereof
CN105289433A (en) Method for large-scale preparation of transition metal oxide porous microsphere
CN107629215B (en) Method for preparing various metal organic frameworks by using aqueous solvent system
CN103887080B (en) Nanocomposite material of nitrogen doped with graphene/copper ferrite and preparation method thereof
CN109665525B (en) Preparation method of dumbbell-shaped iron-nitrogen double-doped porous carbon
CN106876682A (en) A kind of manganese oxide with loose structure/nickel micron ball and its preparation and application
CN104715936A (en) Hierarchical porous carbon electrode material for supercapacitor and preparation method
CN103107022A (en) Preparation method of supercapacitor electrode materials including nicklous hydroxide and graphene compound
CN105513836A (en) Preparation method of supercapacitor electrode material nickel and cobalt composite nanometer oxide
CN104599853A (en) Nickel-cobalt sulpho-spinel for super capacitor and preparation method of nickel-cobalt sulpho-spinel
CN107452512A (en) A kind of preparation method of hollow cobalt acid nickel for electrode material for super capacitor
CN103008015A (en) Preparation method of fuel battery catalyst carrier WO3 (Tungsten Trioxide)
CN104876276A (en) Preparation method of supercapacitor electrode material LaMnO3
CN103021678A (en) Preparation of super capacitor film electrode capable of charging and discharging at ultra-high rate

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant