CN101635354A - Method for preparing amorphous phase nickel hydroxide doped electrode active material of carbon nano tube - Google Patents
Method for preparing amorphous phase nickel hydroxide doped electrode active material of carbon nano tube Download PDFInfo
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- CN101635354A CN101635354A CN200910114321A CN200910114321A CN101635354A CN 101635354 A CN101635354 A CN 101635354A CN 200910114321 A CN200910114321 A CN 200910114321A CN 200910114321 A CN200910114321 A CN 200910114321A CN 101635354 A CN101635354 A CN 101635354A
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- carbon nano
- active material
- nickel
- electrode active
- amorphous phase
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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
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a method for preparing an amorphous phase nickel hydroxide doped electrode active material of a carbon nano tube. The amorphous phase nickel hydroxide doped electrode active material of the carbon nano tube is prepared by a rapid freezing chemical coprecipitation process through using nickel salt, strong base and the carbon nano tube as major materials, and surface active agent isooctyl phenol polyethoxylate (TX-100) and ethanol as auxiliary materials. The prepared electrode active material is prepared into a nickel electrode to form a hydrogen-nickel battery, and has high discharge specific capacity and favorable circulation performance. The method is simple and convenient to operate and the condition is easy to control; the prepared chemical material is stable in the electrochemical performance and is suitable for being used as the anode active material of an alkaline secondary battery.
Description
Technical field
The present invention relates to a kind of preparation method of battery material, particularly relate to a kind of preparation method of amorphous phase nickel hydroxide doped electrode active material of carbon nano tube.
Background technology
But Ni-H cell is described as first-selected electric vehicle power accumulator because of its high-energy-density, long-life fast charging and discharging, excellent comprehensive characteristic such as pollution-free.In the Ni-H cell, the performance of positive active material is the key that cell integrated combination property improves, and especially as the electric motor car power accumulator, the specific capacity of nickel electrode and electric conductivity also need further to improve.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of amorphous phase nickel hydroxide doped electrode active material of carbon nano tube.
Concrete steps are as follows:
(1) calculates the consumption of nickel salt, alkali and carbon nano-tube according to the amount of required preparation target product;
(2) with above-mentioned raw materials weighing in proportion, and wiring solution-forming;
(3) in the nickel salt solution for preparing, add surfactant isooctylphenol APEO (TX-100), ethanol and carbon nano-tube sequentially, ultrasonic concussion 30-60 minute, form the mixed liquor that even carbon nanotube is disperseed;
(4) control reaction temperature is 50-60 ℃, and adding is 2: 1 strong base solutions with the mol ratio of nickel salt in the mixed liquor that step (3) makes, and reaction is 2-3 hour under strong agitation;
(5) step (4) product snap frozen, filtration, washing, drying, grinding are disperseed, can obtain amorphous phase nickel hydroxide doped electrode active material of carbon nano tube.
Described highly basic is a kind of in NaOH and the potassium hydroxide; The concentration of NaOH and potassium hydroxide is respectively 1-4mol/L and 1-5mol/L.
Described nickel salt is a kind of in nickelous sulfate and the nickel nitrate; The concentration of nickelous sulfate and nickel nitrate is respectively 0.5-1mol/L and 0.1-1mol/L.
Described carbon nano-tube is that caliber is the multi-walled carbon nano-tubes of 30-50nm.
Advantage of the present invention is:
1. adopt the method to the product snap frozen, the nickel hydroxide that system is equipped with has noncrystalline structure, and structural disorder and a large amount of faults of construction of height make material have the active material utilization of more electro-chemical activity center and Geng Gao.
2. carbon nano-tube conductive network inner at amorphous phase nickel hydroxide and that the surface forms not only can improve the inner and intergranular conductivity of nickel hydroxide particle, and can also suppress the efflorescence of nickel electrode active material in the charge and discharge cycles process effectively.
3. have the high and good characteristic of cyclic reversibility of specific capacity with this material as the alkaline secondary cell of positive electrode, and the preparation method is simple, condition is easy to control.
Embodiment
Embodiment 1:
By the mass percent of carbon nano-tube in the target product nickel hydroxide is 1% to take by weighing carbon nano-tube and join in the nickel sulfate solution of 0.5mol/L, carbon nano-tube is that caliber is the multi-walled carbon nano-tubes of 30-40nm, add surfactant isooctylphenol APEO (TX-100) and the absolute ethyl alcohol that volume ratio is respectively above-mentioned solution 1% and 2% simultaneously and make dispersant, ultrasonic concussion 30 minutes forms the mixed liquor that even carbon nanotube is disperseed.Above-mentioned mixed liquor is placed reactor, 60 ℃ of control bath temperatures, the mol ratio of adding and nickel salt is that the sodium hydroxide solution strong agitation of 2: 1 1mol/L was reacted 2 hours.After reaction finishes, the gained precipitation was transferred in 0 ℃ of frozen water snap frozen rapidly 5 minutes, suction filtration is washed with distilled water to neutrality, is dried to constant weight in 60 ℃, grinds and disperses to be the finished product amorphous phase nickel hydroxide doped electrode active material of carbon nano tube.Products therefrom is indicated as amorphous phase nickel hydroxide through X-ray diffraction analysis.Products obtained therefrom is made simulated battery discharge and recharge under the 0.1C multiplying power, its discharge capacity is 316mAhg
-1
Embodiment 2:
By the mass percent of carbon nano-tube in the target product nickel hydroxide is 2% to take by weighing carbon nano-tube and join in the nickel nitrate solution of 1mol/L, carbon nano-tube is that caliber is the multi-walled carbon nano-tubes of 40-50nm, add surfactant isooctylphenol APEO (TX-100) and the absolute ethyl alcohol that volume ratio is respectively above-mentioned solution 2% and 5% simultaneously and make dispersant, ultrasonic concussion 50 minutes forms the mixed liquor that even carbon nanotube is disperseed.Above-mentioned mixed liquor is placed reactor, 50 ℃ of control bath temperatures, the mol ratio of adding and nickel salt is that the potassium hydroxide solution strong agitation of 2: 1 3mol/L was reacted 3 hours.After reaction finishes, the gained precipitation was transferred in 0 ℃ of frozen water snap frozen rapidly 8 minutes, suction filtration is washed with distilled water to neutrality, is dried to constant weight in 80 ℃, grinds and disperses to be the finished product amorphous phase nickel hydroxide doped electrode active material of carbon nano tube.Products therefrom is indicated as amorphous phase nickel hydroxide through X-ray diffraction analysis.Products obtained therefrom is made simulated battery discharge and recharge under the 0.1C multiplying power, its discharge capacity is 305mAhg
-1
Claims (2)
1. the preparation method of an amorphous phase nickel hydroxide doped electrode active material of carbon nano tube is characterized in that concrete steps are:
(1) calculates the consumption of nickel salt, alkali and carbon nano-tube according to the amount of required preparation target product;
(2) with above-mentioned raw materials weighing in proportion, and wiring solution-forming;
(3) in the nickel salt solution for preparing, add surfactant isooctylphenol APEO, ethanol and carbon nano-tube sequentially, ultrasonic concussion 30-60 minute, form the mixed liquor that even carbon nanotube is disperseed;
(4) control reaction temperature is 50-60 ℃, and adding is 2: 1 strong base solutions with the mol ratio of nickel salt in the mixed liquor that step (3) makes, and reaction is 2-3 hour under strong agitation;
(5) step (4) product snap frozen, filtration, washing, drying, grinding are disperseed, can obtain amorphous phase nickel hydroxide doped electrode active material of carbon nano tube;
Described highly basic is a kind of in NaOH and the potassium hydroxide; The concentration of NaOH and potassium hydroxide is respectively 1-4mol/L and l-5mol/L;
Described nickel salt is a kind of in nickelous sulfate and the nickel nitrate; The concentration of nickelous sulfate and nickel nitrate is respectively 0.5-1mol/L and 0.1-1mol/L.
2. preparation method according to claim 1 is characterized in that described carbon nano-tube is that caliber is the multi-walled carbon nano-tubes of 30-50nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101143213A CN101635354B (en) | 2009-08-19 | 2009-08-19 | Method for preparing amorphous phase nickel hydroxide doped electrode active material of carbon nano tube |
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| CN2009101143213A CN101635354B (en) | 2009-08-19 | 2009-08-19 | Method for preparing amorphous phase nickel hydroxide doped electrode active material of carbon nano tube |
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| CN101635354A true CN101635354A (en) | 2010-01-27 |
| CN101635354B CN101635354B (en) | 2011-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943372A (en) * | 2014-05-08 | 2014-07-23 | 扬州大学 | Nickel hydroxide/multi-walled carbon nanotube composite material and preparation method thereof |
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2009
- 2009-08-19 CN CN2009101143213A patent/CN101635354B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943372A (en) * | 2014-05-08 | 2014-07-23 | 扬州大学 | Nickel hydroxide/multi-walled carbon nanotube composite material and preparation method thereof |
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Granted publication date: 20110511 Termination date: 20110819 |