CN108878803A - A kind of Prussian blue similar object electrode material of hollow core-shell structure and its preparation method and application - Google Patents
A kind of Prussian blue similar object electrode material of hollow core-shell structure and its preparation method and application Download PDFInfo
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- CN108878803A CN108878803A CN201810501853.1A CN201810501853A CN108878803A CN 108878803 A CN108878803 A CN 108878803A CN 201810501853 A CN201810501853 A CN 201810501853A CN 108878803 A CN108878803 A CN 108878803A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
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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 present invention relates to Prussian blue similar object electrode materials of a kind of hollow core-shell structure and its preparation method and application.The preparation method includes the following steps：S1：Manganese salt and polypyrrole alkanone PVP are sufficiently mixed and dissolve to obtain mixed solution；Manganese salt and the molar ratio of PVP are 1 in the mixed solution:5~200；S2：Ferrocyanide salting liquid is added into mixed solution, is aged, washing, up to the Prussian blue similar object electrode material of the hollow core-shell structure after drying；The manganese salt and the molar ratio of ferrocyanide salt are 2:1~5.Provided by the invention preparation method is simple, reproducible, and raw materials are cheap and easy to get, and product is stablized；The Prussian blue similar object electrode material size uniformity for the hollow core-shell structure that this method prepares is uniformly dispersed, electrochemical performance, when as anode material for lithium-ion batteries, its specific capacitance is up to 166mAh/g under 25mA/g current density, under 50mA/g current density after cycle charge-discharge 200 times, its specific capacity is still maintained at 90% of initial specific capacities or so, and coulombic efficiency is almost 100%, it was demonstrated that the good cycling stability of the electrode material.
Description
Technical field
The invention belongs to field of inorganic material preparing technology, and in particular to a kind of Prussian blue similar object electricity of hollow core-shell structure
Pole material and its preparation method and application.
Background technique
The energy is the material base of the activities of the mankind.At the same time, the climate change due to caused by traditional energy
And the cost inefficiencies of fossil fuel, have become the most significant problem in the whole world.Now there is an urgent need to develop efficient, clearly
Clean and sustainable development alternative energy source conversion and storing technology.The one kind of lithium ion battery as metal ion battery is
The most common rechargeable battery, due to its high-energy and high power density, so that it is widely used in portable electronic product,
And gradually it is applied to hybrid electric vehicle, plug-in hybrid-power electric vehicle and large industry equipment
Open frame and open aperture position of the Prussian blue similar object due to its rigidity, allow them to provide enough
Space and 3 D pore canal guarantee Li+、Na+、K+The quick diffusion of plasma, therefore this kind of material is got in energy storage field
More to attract attention.In addition, it is contemplated that its simple synthesis technology, low cost, the characteristic of nonhazardous, so that such material is big
Sizable application becomes possibility.It is reported that prussian blue material is not suitable for the positive electrode applied to lithium ion battery
In, because of Li+Prussian blue lattice structure can be destroyed when interting in Prussian blue structure, and in oxidation-reduction process
The high-dissolvability of intermediate and to difficulties such as the controls of material moisture content in coprecipitation, further increases Prussian blue
And its challenge of the derivative as anode material for lithium-ion batteries.
It is compound with other materials for improving the cycle performance of battery and improving a promising strategy of chemical property
To improve its chemical property.Such as Zhou et al. has coated one layer with height by simple coprecipitation on CuFe-PBA
The NiFe-PBA of stability forms the composite material of a core-shell structure, and CuFe-PBA@NiFe-PBA nanoparticle is as lithium
For ion battery positive electrode when charging and discharging currents density is 10 mA/g, reversible specific capacity has reached 99 mAh/g.
Zhumabay Bakenov seminar synthesizes NiHCF nano particle by a simple co-precipitation method, shows
Initial specific capacities be 52 mAh/g.Ying et al. has synthesized a kind of LiPB-PPy-PSS composite material by In-situ reaction, benefit
With with conducting polymer is compound improves the Prussian blue chemical property in anode material for lithium-ion batteries.These research shows that
Prussian blue and its derivative appearance structure has a great impact to its chemical property.Controlledly synthesis nanostructure, such as
Nucleocapsid architecture can provide advantage for various applications.As far as we know, this be for the first time report about using controllable shape
State structure synthesizes a kind of hollow core-shell structure prussian blue like object.
Therefore, develop that a kind of cyclical stability is high and electrochemical performance, the hollow core-shell structure that can should make electrode material are general
Shandong scholar's indigo plant analog has important research significance and application value.
Summary of the invention
It is an object of the invention to overcome Prussian blue in the prior art and its derivative be not suitable for being applied to as lithium from
Destructurized defect and deficiency so as to cause chemical property decline, mentions during the positive electrode circulating battery of sub- battery
For a kind of Prussian blue similar object electrode material and preparation method thereof of hollow core-shell structure.Hollow nucleocapsid knot provided by the invention
A kind of the Prussian blue of hollow core-shell structure can be successfully prepared in the preparation method of the Prussian blue similar object electrode material of structure
Analog electrode material, the electrode material size uniformity are uniformly dispersed, electrochemical performance, as lithium ion cell positive
When material, its specific capacitance is up to 166mAh/g under 25mA/g current density, the cycle charge discharge under 50mA/g current density
After electricity 200 times, specific capacity is still maintained at 90% of initial specific capacities or so, and coulombic efficiency is almost 100%, it was demonstrated that the electrode
The good cycling stability of material；Preparation method is simple for this, and reproducible, raw materials are cheap and easy to get, and product is stablized.
The hollow core-shell structure being prepared another object of the present invention is to provide above-mentioned preparation method it is Prussian blue
Analog electrode material.
Another object of the present invention is to provide the Prussian blue similar object electrode materials of above-mentioned hollow core-shell structure to make
Application in the positive electrode of standby battery.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of preparation method of the Prussian blue similar object electrode material of hollow core-shell structure, includes the following steps：
S1：Manganese salt and polypyrrole alkanone PVP are sufficiently mixed and dissolve to obtain mixed solution；Manganese salt and PVP's rubs in the mixed solution
You are than being 1:5~200；
S2：Ferrocyanide salting liquid is added into mixed solution, is aged, washing, up to the hollow core-shell structure after drying
Prussian blue similar object electrode material；The manganese salt and the molar ratio of ferrocyanide salt are 2:1~5.
The present invention provides a kind of new methods for preparing Prussian blue similar object electrode material, and this method is simple and easy,
Reproducible, raw materials are cheap and easy to get, and product is stablized.The electrode material size uniformity that is prepared by this method, point
It dissipates uniformly, electrochemical performance, when as anode material for lithium-ion batteries, its specific capacitance under 25mA/g current density
Up to 166mAh/g, under 50mA/g current density after cycle charge-discharge 200 times, specific capacity is still maintained at initial specific capacities
90% or so, coulombic efficiency is almost 100%, it was demonstrated that the good cycling stability of the electrode material.
Preferably, the manganese salt is manganese acetate, manganese chloride or manganese sulfate.
Preferably, the ferrocyanide salt is potassium ferrocyanide.
Preferably, the manganese salt and the molar ratio of PVP are 1:100.
Preferably, the manganese salt and the molar ratio of potassium ferrocyanide are 1:1.
Preferably, the temperature of the ageing is 20~30 DEG C, and the time is 6h~48h.
Preferably, the solution of the washing is water and ethyl alcohol, and the temperature of the drying is 60~80 DEG C, the drying when
Between for 12~for 24 hours.
The Prussian blue similar object electrode material for the hollow core-shell structure that above-mentioned preparation method obtains is also claimed in the present invention
Material.
Prussian blue similar application of the object electrode material in the positive electrode for preparing battery of above-mentioned hollow core-shell structure
Also within the scope of the present invention.
Preferably, the battery is lithium ion battery.
Compared with prior art, the present invention has the advantages that：
Provided by the invention preparation method is simple, reproducible, and raw materials are cheap and easy to get, and product is stablized；This method
Prepare the Prussian blue similar object electrode material size uniformity of obtained hollow core-shell structure, be uniformly dispersed, chemical property is excellent
Different, when as anode material for lithium-ion batteries, its specific capacitance is up to 166mAh/g under 25mA/g current density,
Under 50mA/g current density after cycle charge-discharge 200 times, specific capacity is still maintained at 90% of initial specific capacities or so, coulomb
Efficiency is almost 100%, it was demonstrated that the good cycling stability of the electrode material.
Detailed description of the invention
Fig. 1 is X-ray diffractogram of the hollow core-shell structure prussian blue prepared by the present invention like object electrode material；
Fig. 2 is scanning electron microscope (SEM) photograph of the hollow core-shell structure prussian blue prepared by the present invention like object electrode material；
Fig. 3 is transmission electron microscope picture of the hollow core-shell structure prussian blue prepared by the present invention like object electrode material；
Fig. 4 is for hollow core-shell structure prussian blue prepared by the present invention like object electrode material as lithium ion cell positive material
The constant current charge-discharge performance map of material；
Fig. 5 is for hollow core-shell structure prussian blue prepared by the present invention like object electrode material as lithium ion cell positive material
The cycle life performance figure of material.
Specific embodiment
Below with reference to embodiment, the present invention is further explained.These embodiments are merely to illustrate the present invention rather than limitation
The scope of the present invention.Test method without specific conditions in lower example embodiment usually according to this field normal condition or is pressed
The condition suggested according to manufacturer；Used raw material, reagent etc., unless otherwise specified, being can be from the business such as conventional market
The raw materials and reagents that approach obtains.The variation for any unsubstantiality that those skilled in the art is done on the basis of the present invention
And replacement belongs to scope of the present invention.
Embodiment 1
The present embodiment provides a kind of Prussian blue similar object electrode material of hollow core-shell structure, preparation method is as follows.
（1）Preparation
0.6mmol manganese acetate and 60mmol PVP K-30 are dissolved in 300mL deionized water, solution A is formed.Solution B is
0.3mmol potassium ferrocyanide is dissolved in 60mL deionized water.Then solution B is slowly added dropwise in solution A, at room temperature
It after continuously stirring 90 minutes, is placed at 25 DEG C and is aged for 24 hours, obtain white precipitate, be centrifugated, with deionized water and ethyl alcohol
It is cleaned, dry 12h obtains lightpink powder at 60 DEG C, and as hollow core-shell structure prussian blue is like object micron box.
（2）Performance test：
The hollow core-shell structure prussian blue of gained passes through X-ray diffraction phenetic analysis like object electrode material, as a result such as Fig. 1 institute
Show.Fig. 2 is stereoscan photograph of the hollow core-shell structure prussian blue manufactured in the present embodiment like object.As can be seen from Figure 2
Prussian blue similar object pattern is uniform, is spherical shape, illustrates the hollow core-shell structure prussian blue prepared by this method
There is preferable homogeneity like object.Fig. 3 is transmission electron microscope picture of the hollow core-shell structure prussian blue manufactured in the present embodiment like object.
The internal structure of Prussian blue similar object is hollow core-shell structure as seen from Figure 3.Fig. 4 is hollow core manufactured in the present embodiment
Constant current charge-discharge performance map of the Prussian blue similar object electrode material of shell structure as anode material for lithium-ion batteries（For the first time）.From
It is found that hollow core-shell structure prussian blue has reached 166mAh/g in the specific capacity discharged for the first time like object in Fig. 4.From Fig. 5
It is found that specific capacity is still maintained at 90% of initial specific capacities or so under 50mA/g current density after cycle charge-discharge 200 times,
Its coulombic efficiency is almost 100%, illustrates to benefit from unique hollow core-shell structure, Prussian blue as lithium ion cell positive
Analog presents high specific capacity and good cyclical stability.
Embodiment 2
The present embodiment provides a kind of Prussian blue similar object electrode material of hollow core-shell structure, preparation method is as follows.
0.6mmol manganese acetate and 60mmol PVP K-30 are dissolved in 300 mL deionized waters, solution A is formed.Solution
B is that 0.6mmol potassium ferrocyanide is dissolved in 60mL deionized water.Then solution B is slowly added dropwise in solution A, in room temperature
Under continuously stir 90 minutes after, be placed at 30 DEG C and be aged 18h, obtain white precipitate, be centrifugated, with deionized water and second
Alcohol is cleaned, and dry 12h obtains hollow core-shell structure prussian blue like object at 60 DEG C.
Embodiment 3
The present embodiment provides a kind of Prussian blue similar object electrode material of hollow core-shell structure, preparation method is as follows.
0.6mmol manganese chloride and 60mmol PVP K-30 are dissolved in 300 mL deionized waters, solution A is formed.Solution
B is that 0.6mmol potassium ferrocyanide is dissolved in 60mL deionized water.Then solution B is slowly added dropwise in solution A, in room temperature
Under continuously stir 90 minutes after, be placed at 25 DEG C and be aged 18h, obtain white precipitate, be centrifugated, with deionized water and second
Alcohol is cleaned, and is dried overnight to obtain hollow core-shell structure prussian blue at 60 DEG C like object.
Embodiment 4
The present embodiment provides a kind of Prussian blue similar object electrode material of hollow core-shell structure, preparation method is as follows.
0.6mmol manganese sulfate and 30mmol PVP K-30 are dissolved in 300 mL deionized waters, solution A is formed.Solution
B is that 0.6mmol potassium ferrocyanide is dissolved in 60mL deionized water.Then solution B is slowly added dropwise in solution A, in room temperature
Under continuously stir 90 minutes after, be placed at 20 DEG C and be aged 48h, obtain white precipitate, be centrifugated, with deionized water and second
Alcohol is cleaned, and dry 12h obtains hollow core-shell structure prussian blue like object at 80 DEG C.
Embodiment 5
The present embodiment provides a kind of Prussian blue similar object electrode material of hollow core-shell structure, preparation method is as follows.
0.6mmol manganese acetate and 6mmol PVP K-30 are dissolved in 300 mL deionized waters, solution A is formed.Solution B
It is dissolved in 60mL deionized water for 1.5mmol potassium ferrocyanide.Then solution B is slowly added dropwise in solution A, in room temperature
Under continuously stir 90 minutes after, be placed at 25 DEG C and be aged 36h, obtain white precipitate, be centrifugated, with deionized water and second
Alcohol is cleaned, and drying obtains hollow core-shell structure prussian blue like object for 24 hours at 60 DEG C.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitution, combination and simplify,
It should be equivalent substitute mode, be included within the scope of the present invention.
Reference examples 1
This reference examples provides a kind of electrode material.The preparation method of the electrode material except the PVP K-30 of selection be 0.6mmol in addition to,
Remaining condition is consistent with embodiment 1.
The electrode material that this method is prepared as anode material for lithium-ion batteries constant current charge-discharge performance for the first time
The specific capacity of electric discharge has reached 96mAh/g.Under 50mA/g current density after cycle charge-discharge 200 times, specific capacity is still maintained
65% or so of initial specific capacities, coulombic efficiency is close to 95%, as lithium ion cell positive, the specific volume of the electrode material
It is poor to measure lower and cyclical stability.
Reference examples 2
This reference examples provides a kind of electrode material.The preparation method of the electrode material except the potassium ferrocyanide of selection be 6mmol in addition to,
Remaining condition is consistent with embodiment 1
Electrode material prepared by the above method as anode material for lithium-ion batteries constant current charge-discharge performance for the first time
The specific capacity of electric discharge has reached 80mAh/g.Under 50mA/g current density after cycle charge-discharge 200 times, specific capacity is still maintained
70% or so of initial specific capacities, coulombic efficiency is close to 90%, as lithium ion cell positive, the specific volume of the electrode material
It is poor to measure low and cyclical stability.
Claims (10)
1. a kind of preparation method of the Prussian blue similar object electrode material of hollow core-shell structure, which is characterized in that including as follows
Step：
S1：Manganese salt and polypyrrole alkanone PVP are sufficiently mixed and dissolve to obtain mixed solution；Manganese salt and PVP's rubs in the mixed solution
You are than being 1:5~200；
S2：Ferrocyanide salting liquid is added into mixed solution, is aged, washing, up to the hollow core-shell structure after drying
Prussian blue similar object electrode material；The manganese salt and the molar ratio of ferrocyanide salt are 2:1~5.
2. preparation method according to claim 1, which is characterized in that the manganese salt is manganese acetate, manganese chloride or manganese sulfate.
3. preparation method according to claim 1, which is characterized in that the ferrocyanide salt is potassium ferrocyanide.
4. preparation method according to claim 1, which is characterized in that the manganese salt and the molar ratio of PVP are 1:100.
5. preparation method according to claim 1, which is characterized in that the manganese salt and the molar ratio of potassium ferrocyanide are 1:1.
6. preparation method according to claim 1, which is characterized in that the temperature of the ageing is 20~30 DEG C, time 6h
~48h.
7. preparation method according to claim 1, which is characterized in that the solution of the washing is water and ethyl alcohol, the drying
Temperature be 60~80 DEG C, time of the drying is 12~for 24 hours.
8. the Prussian blue similar object electrode material for the hollow core-shell structure that any preparation method of claim 1 ~ 7 obtains.
9. the Prussian blue similar object electrode material of hollow core-shell structure described in claim 8 is in the positive electrode for preparing battery
Application.
10. applying according to claim 9, which is characterized in that the battery is lithium ion battery.
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Cited By (8)
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| CN109742398A (en) * | 2019-01-07 | 2019-05-10 | 中国矿业大学 | The synthesis and application method of a kind of lithium ion battery with manganese systems Prussian blue analogue material |
| CN110085833A (en) * | 2019-04-28 | 2019-08-02 | 武汉工程大学 | Coat hollow cubic materials preparation method and its product and application |
| CN110148763A (en) * | 2019-04-24 | 2019-08-20 | 南京师范大学 | A kind of Fe doping Mn with hollow nanometer frame structure3O4The preparation method and application of carbon-nitrogen material |
| CN110342585A (en) * | 2019-07-12 | 2019-10-18 | 大连恒超锂业科技有限公司 | Four sides hollow out CoFe2O4Nano material and its preparation method and application |
| CN110571439A (en) * | 2019-08-16 | 2019-12-13 | 五邑大学 | Preparation method and application of carbon nanotube-coated cobalt simple substance composite material |
| CN112174167A (en) * | 2020-08-13 | 2021-01-05 | 国网浙江省电力有限公司电力科学研究院 | Prussian blue material with core-shell structure and preparation method and application thereof |
| CN113206224A (en) * | 2021-04-08 | 2021-08-03 | 华南理工大学 | Core-shell structure Prussian blue potassium ion battery positive electrode material modified by polymeric organic matters and preparation method thereof |
| CN114899367A (en) * | 2022-03-24 | 2022-08-12 | 中国计量大学 | Spherical material with cobalt glycerol core @ iron cobalt Prussian blue analogue shell and preparation and application thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109742398A (en) * | 2019-01-07 | 2019-05-10 | 中国矿业大学 | The synthesis and application method of a kind of lithium ion battery with manganese systems Prussian blue analogue material |
| CN110148763A (en) * | 2019-04-24 | 2019-08-20 | 南京师范大学 | A kind of Fe doping Mn with hollow nanometer frame structure3O4The preparation method and application of carbon-nitrogen material |
| CN110148763B (en) * | 2019-04-24 | 2021-06-11 | 南京师范大学 | Preparation method and application of Fe-doped Mn3O4 carbon-nitrogen material with hollow nano-framework structure |
| CN110085833A (en) * | 2019-04-28 | 2019-08-02 | 武汉工程大学 | Coat hollow cubic materials preparation method and its product and application |
| CN110342585A (en) * | 2019-07-12 | 2019-10-18 | 大连恒超锂业科技有限公司 | Four sides hollow out CoFe2O4Nano material and its preparation method and application |
| CN110571439A (en) * | 2019-08-16 | 2019-12-13 | 五邑大学 | Preparation method and application of carbon nanotube-coated cobalt simple substance composite material |
| CN112174167A (en) * | 2020-08-13 | 2021-01-05 | 国网浙江省电力有限公司电力科学研究院 | Prussian blue material with core-shell structure and preparation method and application thereof |
| CN113206224A (en) * | 2021-04-08 | 2021-08-03 | 华南理工大学 | Core-shell structure Prussian blue potassium ion battery positive electrode material modified by polymeric organic matters and preparation method thereof |
| CN113206224B (en) * | 2021-04-08 | 2022-07-01 | 华南理工大学 | Core-shell structure Prussian blue potassium ion battery positive electrode material modified by polymeric organic matters and preparation method thereof |
| CN114899367A (en) * | 2022-03-24 | 2022-08-12 | 中国计量大学 | Spherical material with cobalt glycerol core @ iron cobalt Prussian blue analogue shell and preparation and application thereof |
| CN114899367B (en) * | 2022-03-24 | 2023-08-18 | 中国计量大学 | Spherical material of cobalt glycerol core @ iron cobalt Prussian blue analogue shell, and preparation and application thereof |
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