CN109148828A - One kind includes straw cluster-shaped Co-Fe2O3Electrode of nanocomposite and preparation method thereof - Google Patents
One kind includes straw cluster-shaped Co-Fe2O3Electrode of nanocomposite and preparation method thereof Download PDFInfo
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- CN109148828A CN109148828A CN201810760517.9A CN201810760517A CN109148828A CN 109148828 A CN109148828 A CN 109148828A CN 201810760517 A CN201810760517 A CN 201810760517A CN 109148828 A CN109148828 A CN 109148828A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/626—Metals
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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
It include straw cluster-shaped Co-Fe the present invention relates to one kind2O3Electrode of nano-complex and preparation method thereof, wherein to include Co (NO3)2·6H2O and FeCl2·4H2O is raw material, using dehydrated alcohol and deionized water as solvent, prepares the cobalt doped ferric oxide nano composite material with compound characteristics by the method for hydrolysis and self assembly and high-temperature calcination.Preparation process of the invention is simple, environmentally protective, is easy to produce in batches.And preparing the application of electrode to be formed with the nanocomposite of acquisition has excellent chemical property in the negative electrode material of lithium ion battery.
Description
Technical field
It include straw cluster-shaped Co-Fe the present invention relates to lithium ion battery negative material field more particularly to one kind2O3
Electrode of nanocomposite and preparation method thereof.
Background technique
Currently, lithium ion battery has been widely used in mobile communication equipment, laptop computer, electronics with its excellent performance
The portable products such as video camera, as lithium ion battery technology is led in power vehicle, aerospace and Military Electronic Equipment etc.
Domain using increasing, people propose requirements at the higher level to the energy density of lithium ion battery.Negative electrode material be influence lithium from
One of the key factor of sub- battery performance, however, the lithium ion battery negative material of business is mainly graphite type material at present,
But its theoretical specific capacity only has 372mAh/g, is unable to satisfy the great demand of rapid development.Therefore novel capacity height, multiplying power are developed
Have excellent performance, negative electrode material that the service life is long it is extremely urgent.
Transition metal oxide Fe2O3Because of its theoretical specific capacity (1007mAh/g) with higher, cheap cost and nothing
Poison and environmental protection advantage and receive and widely pay close attention to.But Fe2O3When applied to lithium ion battery negative material, because of its conductivity
Difference is with volume expansion and by huge obstruction.Currently, for Fe2O3Research mainly have following three kinds of methods: (1) nanosizing:
The iron oxide material of nanostructure is prepared, volume expansion can be effectively inhibited, but the conductivity of material does not have still
To improvement；(2) it is supported in conductive current collector: being capable of effectively cushion factor by the way that iron oxide to be supported in conductive current collector
Secondary circulation bring Volumetric expansion, and the electrical conductance of material can be effectively improved, but since conductive current collector is high
Expensive price, therefore, this method cannot be applied widely；(3) ion doping: ion doping is current improvement iron oxide
Can more efficiently method, on the one hand: the electrical conductance that ion doping improves material can be passed through；On the other hand: nanosizing material
Volumetric expansion can effectively be mitigated.
It is a kind of as lithium ion battery negative material as disclosed in domestic patent application publication the CN106450189Ath
A kind of preparation method of the carbon coating ferric oxide nano composite material with N doping, by using high-temperature calcination after first hydrothermal growth
Method, then by heating, stirring, separation, dry and high-temperature calcination method prepare N doping with compound characteristics and
The nanocomposite of carbon coating iron oxide.The material is used as lithium ion battery negative material and presents excellent electrochemistry
Can, after current density is that 1C is recycled 100 times, capacity is maintained at 624mAh/g, and capacity retention ratio is up to 96.4%.Main attribution
In nano stick structure, periphery is the carbon coating layer of one layer of nanometer grade thickness, can effectively be buffered because multiple tape loop comes
Volumetric expansion, simultaneously because the introducing of nitrogen, there are the carbon nitrogen covalent bond effects in carbon coating layer, make it have excellent
Different chemical property, i.e., excellent cycle performance and high rate performance.But the preparation process of the invention is relatively complicated, and process is multiple
It is miscellaneous, it is higher to prepare cost of material, it is, thus, sought for a kind of preparation process is simple, low in cost, high production efficiency, is easy to advise
Modelling production, the lithium ion battery negative material with excellent electrochemical performance.
In conclusion the ferric oxide composite material for preparing ion doping can be effectively as lithium ion battery negative material
The chemical property of material is promoted, and in the prior art, prepared composite technology is complex, and capacity is relatively low.
Summary of the invention
For shortcoming and deficiency in the prior art, the present invention at least the following technical schemes are provided:
One kind includes straw cluster-shaped Co-Fe2O3The preparation method of the electrode of nanocomposite, the preparation method
The following steps are included:
To include Co (NO3)2·6H2O、FeCl2·4H2The process of the raw material of O and precipitating reagent configuration suspension；
Above-mentioned suspension is placed in high-pressure hydrothermal reaction kettle, reaction and self assembly is hydrolyzed；
Sediment collecting process；
High-temperature calcination process；
Pole piece drying process, so that obtaining includes straw cluster-shaped Co-Fe2O3The electrode of nanocomposite.
Further, the process of the configuration suspension specifically includes, and takes dehydrated alcohol and deionized water as solvent, will
Precipitating reagent 1 is added the solvent and forms solution, by the Co (NO3)2·6H2O is dispersed in above-mentioned solution, is cleaned by ultrasonic simultaneously magnetic
After power stirring, precipitating reagent 2 and FeCl is added2·4H2O, magnetic agitation.
Further, the precipitating reagent 1 includes urea, and the precipitating reagent 2 includes NH4F。
Further, the hydro-thermal reaction includes that the suspension of acquisition is transferred in high-pressure hydrothermal reaction kettle, described anti-
Answering loading in kettle is 60-80%, 100~140 DEG C at a temperature of kept for 10~14 hours.
Further, the high-temperature calcination process includes that will collect products therefrom to forge in 400~500 DEG C of air atmospheres
It burns 150~250 minutes.
Further, the Co (NO3)2·6H2The O and FeCl2·4H2The mass ratio of O is 0.6-0.9:1.
Further, the Co (NO3)2·6H2The mass ratio of O and the precipitating reagent 1 is 1.4-1.8:1, above-mentioned
FeCl2·4H2The mass ratio of O and the precipitating reagent 2 is 2.5-3.0:1.
Further, the mass ratio of the precipitating reagent 1 and the precipitating reagent 2 is 1.1-1.4:1.
Further, the pole piece drying process includes that the product obtained to the high-temperature calcination process is successively adjusted
Slurry, coating and drying.
It include straw cluster-shaped Co-Fe the present invention also provides one kind2O3The electrode of nanocomposite, the electrode packet
Active material is included, the active material includes straw cluster-shaped Co-Fe2O3Nanocomposite.
Compared with prior art, the present invention at least has the advantages that
(1) the used raw material of the present invention is cheap, and no pollution to the environment can promote the sustainable development of ecological environment, and
Preparation process of the present invention is simple, easy to operate, and cost is relatively low, is easy to large-scale production.
(2) present invention can be obtained by simple technique comprising straw cluster-shaped Co-Fe2O3The electrode of nano material, one
The doping of aspect, cobalt ions can increase spacing of lattice, to be conducive to effectively buffer huge by repeatedly recycling bring
Volume expansion can guarantee the integrality of electrode, increase the electric conductivity of electrode, to accelerate the diffusion rate of lithium ion；Separately
On the one hand, the nano material of straw cluster-shaped of the present invention is made of many nanometer rods, which can increase electrode and electrolyte
Contact area, accelerate the transmission rate of ion and electronics, nanometer rods are made of nano particle not of uniform size, can be further
Improve material electric conductivity, effectively buffer because of multiple charge and discharge bring enormousness effect, thus enhance cycle performance and
High rate performance, and electrochemical property test shows when current density is 200mA/g, after 350 charge and discharge cycles still
The reversible specific capacity of 1200mAh/g can so be kept；And it is averagely put under the current density of 1A/g, 2A/g, 4A/g and 6A/g
Electric specific capacity still can achieve 736.4,537.1,376.3 and 213.1mAh/g, which is used as negative electrode of lithium ion battery material
Material presents excellent chemical property.
Detailed description of the invention
Fig. 1 is straw cluster-shaped Co-Fe in the embodiment of the present invention2O3The XRD diagram of nanocomposite.
Fig. 2 is straw cluster-shaped Co-Fe in the embodiment of the present invention2O3The XPS of nanocomposite schemes.
Fig. 3 is straw cluster-shaped Co-Fe in the embodiment of the present invention2O3The SEM of nanocomposite schemes.
Fig. 4 is straw cluster-shaped Co-Fe in the embodiment of the present invention2O3The TEM of nanocomposite schemes.
Fig. 5 is in the embodiment of the present invention comprising straw cluster-shaped Co-Fe2O3The cycle performance of the electrode of nanocomposite
Curve (200mA/g).
Fig. 6 is in the embodiment of the present invention comprising straw cluster-shaped Co-Fe2O3The high rate performance of the electrode of nanocomposite
Curve graph.
Fig. 7 is in the embodiment of the present invention comprising straw cluster-shaped Co-Fe2O3The electrode of nanocomposite is followed by 350 times
Scanning shape appearance figure and diffraction ring after ring.
Specific embodiment
It is next below that the present invention will be further described in detail.
The present invention is made below by attached drawing and specific implementation step and further being elaborated, and this hair is described in detail
Bright selectable other embodiments.But it is noted that specific implementation step of the invention be not limited to it is presently described
Specific steps, can be by those skilled in the art according to specific experiment under the premise of without departing from the spirit and scope of the invention
Condition and facility realize other trials.
Embodiment 1
One kind includes straw cluster-shaped Co-Fe2O3The preparation method of nanocomposite, specifically comprises the following steps:
Solution is prepared: taking dehydrated alcohol and deionized water, being that 1:7 is uniformly mixed according to volume ratio by it is used as solvent, takes
Urea is added in its solvent as precipitating reagent 1 and forms solution by urea, by Co (NO3)2·6H2O is dispersed in above-mentioned solution, and
At room temperature, it is configured to suspension within temperature constant magnetic stirring 1 hour after being ultrasonically treated 35 minutes in supersonic cleaning machine；Take NH4F makees
For precipitating reagent 2, then by FeCl2·4H2O and NH4F is added in above-mentioned suspension, is continued temperature constant magnetic stirring 1.5 hours, is obtained
New suspension, the purpose of temperature constant magnetic stirring are to allow Co2+More uniform is distributed in solution, by precipitating reagent effect more
Add activation.
Wherein, Co (NO3)2·6H2O and FeCl2·4H2The selection of the mass ratio of O is mainly guaranteeing that high capacity and height are steady
Under qualitative precondition, there are enough Co2+It is doped in the pore structure of iron oxide, guarantees its enough embedding lithium site；It is heavy
Shallow lake agent 1 and Co (NO3)2·6H2The selection of the mass ratio of O is primary concern is that Co2+Hydrolysis rate；Precipitating reagent 2 and FeCl2·
4H2The selection of the mass ratio of O is primary concern is that Fe2+Hydrolysis rate；The selection of solvent ratios determines Co-Fe2O3Presoma
The formation of straw cluster-shaped structure.Above-mentioned Co (NO3)2·6H2The mass ratio of O and urea is 1.6:1, above-mentioned FeCl2·4H2O with
NH4The mass ratio of F is 2.75:1；Above-mentioned Co (NO3)2·6H2O and FeCl2·4H2The mass ratio of O be 0.72:1, above-mentioned urea with
Above-mentioned NH4The mass ratio of F is 1.25:1.
High-pressure hydrothermal reaction kettle is can to decompose indissoluble substance, can build a kind of environment that high-temperature high-pressure anti-corrosive is high-purity
Hydro-thermal reaction occurs, changes the pattern of nano material by temperature, time and the solvent of control reaction, obtains presoma, from
And achieve the purpose that experiment.The present invention selects high-pressure hydrothermal reaction kettle to carry out hydro-thermal reaction and self assembly.
Hydrolysis and self assembly: above-mentioned obtained suspension being transferred in high-pressure hydrothermal reaction kettle, is sealed,
12h is kept the temperature at 120 DEG C, then cooled to room temperature, the hydrothermal reaction kettle filler ratio is 65%；
Precipitating is collected: when reaction kettle cooled to room temperature, the reaction product of above-mentioned steps filtered, obtains sediment,
Water and ethyl alcohol is used to filter respectively 3 times its sediment, after being then centrifuged 2 times with water and ethyl alcohol, dry 10 is small under the conditions of 85 DEG C
When；
Calcining: it will collect after products therefrom is calcined 200 minutes in 450 DEG C of air atmosphere and obtain final product, to remove
The volatile impurities such as chemically combined water of crystallization and carbon dioxide are removed, at a higher temperature, so that solid phase reaction occurs for oxide, are formed
The product of active chemical combination form, to obtain Co-Fe2O3Nanocomposite.
SEM test is carried out to calcined product, test results are shown in figure 3 by SEM, calcines it can be seen from its figure
Product obtained shows straw cluster-shaped pattern afterwards, is made of many nanometer rods, and every nanometer rods are by being permitted
More little particle compositions.
Pole piece is dry: sizing mixing to products therefrom, i.e., by products therefrom and PVDF and conductive black according to the ratio of 8:1:1
Example, is mixed 6 hours in nmp solvent and obtains slurry, and the slurry of acquisition is coated, i.e., uniformly applies slurry on coating machine
It overlays on copper foil, thickness is about 1mm, coated material is placed in a vacuum drying oven drying by the drying after coating, dry
Temperature be 80 DEG C, the dry time be 12 hours, thus the electrode slice after being dried.
Fig. 1 is straw cluster-shaped Co-Fe in the embodiment of the present invention2O3Nanocomposite and undoped Fe2O3Nano material
XRD diagram, can be seen that the Co-Fe in the present invention from the peak value of (b) figure of (a) figure and Fig. 1 of Fig. 12O3Nanocomposite
Compared to the peak undoped with cobalt, it will be apparent that be moved to the left, this is mainly due to increasing the spacing of lattice of iron oxide after doping；Figure
2 be straw cluster-shaped Co-Fe in the embodiment of the present invention2O3The XPS of nanocomposite schemes, can be obvious from (a) figure in Fig. 2
Ground sees, Co-Fe2O3Nanocomposite contains Fe, Co and O element.(b) figure in Fig. 2 is Fe3+Energy spectrum diagram, can from figure
To see, two peaks are located at 710.6eV and 724.1eV, correspond respectively to Fe2p3/2And Fe2p1/2, it was demonstrated that iron oxide
Successful synthesis；(c) figure in Fig. 2 is Co2+Feature energy spectrum diagram, it can be seen that two peaks are located at 780.6eV
And 796.0eV, correspond to Co2p3/2And Co2p1/2, in conjunction with XRD spectrum, it was demonstrated that Co2+Successful doping；Fig. 3 is that the present invention is real
Apply Co-Fe in example2O3The SEM of nanocomposite schemes, it can be seen that prepared Co-Fe2O3Nano material shows straw group
Tufted pattern is made of many nanometer rods, and every nanometer rods are made of many little particles；Fig. 4 is that the present invention is real
Apply Co-Fe in example2O3The TEM of nanocomposite schemes, from the figure, it can be seen that TEM result is consistent with SEM result, and prepare
Polycrystalline structure is presented in composite material, has apparent diffraction ring；Can be seen that between nano particle from (c) figure in Fig. 4 has perhaps
More gaps, the volume expansion that the presence in these gaps can effectively during buffer cycles, and increase electrode and electrolyte
Contact area be conducive to the raising of high rate performance to increase the active site of electrochemical reaction；(e) figure in Fig. 4 is
Co-Fe2O3The lattice fringe map of nanocomposite, it is 0.272nm that spacing of lattice can be clearly observed from figure, right
Ying Yu (104) crystal face, further illustrates the successful synthesis of iron oxide.(f) figure in Fig. 4 is Co-Fe2O3Nanocomposite
Electronics selected diffraction map, from the figure, it can be seen that the crystal face of (104), (116), (113), (110) and (024) is completely
Clearly, this is consistent with the analysis of XRD and XPS.Fig. 5 is in the embodiment of the present invention comprising straw cluster-shaped Co-Fe2O3Nanometer is multiple
The cycle performance curve of the electrode of condensation material, wherein to include straw cluster-shaped Co-Fe2O3The electrode conduct of nanocomposite
Lithium ion battery negative material carries out the charge and discharge of 350 circulations, can be seen by its curve under the current density of 200mA/g
The nanocomposite still can keep the specific discharge capacity of 1200mAh/g after 350 circulations out, show to stablize and
Excellent cycle performance；Fig. 6 is in the embodiment of the present invention comprising straw cluster-shaped Co-Fe2O3Times of the electrode of nanocomposite
Rate curve graph, as can be seen from the figure the electrode material is averaged discharge ratio under 1A/g, 2A/g, 4A/g and 6A/g in current density
Capacity still can achieve 736.4mAh/g, 537.1mAh/g, 376.3mAh/g and 213.1mAh/g, and work as current density weight
When newly returning to 200mA/g, averaged discharge specific capacity still can maintain 1040.9mAh/g, present outstanding electrochemistry
Energy；Fig. 7 is in the embodiment of the present invention comprising Co-Fe2O3Scanning pattern of the electrode of nanocomposite after 350 circulations
Figure and diffraction ring, by (a) figure in Fig. 7 it is found that the material is still kept after up to 350 circulations and rush of current
Good pattern.It is compared with (f) figure in Fig. 4, (104), (116), (113), (110) and (024) in Fig. 7 in (b) figure are brilliant
Face is still completely clear, illustrates that material by prolonged circulation, the collapsing of structure does not occur, still maintains stable knot
Structure sufficiently demonstrates Co-Fe2O3Nanocomposite possesses excellent chemical property.It can be seen that the present invention is using simple
Process obtain the electrode material of special appearance, and the electrode shows excellent chemical property.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not limited to above-mentioned implementation
It is other any to change, modification, substitute, combine and should be equivalent with made under principle without departing from essence of the invention in example
Substitute mode is included within the scope of the present invention.
Claims (10)
1. one kind includes straw cluster-shaped Co-Fe2O3The preparation method of the electrode of nanocomposite, which is characterized in that described
Preparation method the following steps are included:
To include Co (NO3)2·6H2O、FeCl2·4H2The process of the raw material of O and precipitating reagent configuration suspension；
Above-mentioned suspension is placed in high-pressure hydrothermal reaction kettle, reaction and self assembly is hydrolyzed；
Sediment collecting process；
High-temperature calcination process；
Pole piece drying process, so that obtaining includes straw cluster-shaped Co-Fe2O3The electrode of nanocomposite.
2. the preparation method according to claim 1, which is characterized in that the process of the configuration suspension specifically includes, and takes
Precipitating reagent 1 is added the solvent and forms solution, by the Co (NO by dehydrated alcohol and deionized water as solvent3)2·6H2O
It is dispersed in above-mentioned solution, after being cleaned by ultrasonic simultaneously magnetic agitation, precipitating reagent 2 and FeCl is added2·4H2O, magnetic agitation.
3. the preparation method according to claim 2, which is characterized in that the precipitating reagent 1 includes urea, the precipitating reagent 2
Including NH4F。
4. the preparation method according to claim 1, which is characterized in that the hydro-thermal reaction includes, by the suspension of acquisition
Be transferred in high-pressure hydrothermal reaction kettle, the loading in the reaction kettle be 60-80%, 100~140 DEG C at a temperature of keep
10~14 hours.
5. the preparation method according to claim 1, which is characterized in that the high-temperature calcination process includes that will collect gained
Product is calcined 150~250 minutes in 400~500 DEG C of air atmospheres.
6. according to the preparation method of Claims 2 or 3, which is characterized in that the Co (NO3)2·6H2The O and FeCl2·
4H2The mass ratio of O is 0.6-0.9:1.
7. according to the preparation method of Claims 2 or 3, which is characterized in that the Co (NO3)2·6H2O and the precipitating reagent
1 mass ratio is 1.4-1.8:1, above-mentioned FeCl2·4H2The mass ratio of O and the precipitating reagent 2 is 2.5-3.0:1.
8. according to the preparation method of Claims 2 or 3, which is characterized in that the matter of the precipitating reagent 1 and the precipitating reagent 2
Amount is than being 1.1-1.4:1.
9. the preparation method according to claim 1, which is characterized in that the pole piece drying process includes, to the high temperature
The product that calcination process obtains successively is sized mixing, coated and is dried.
10. one kind includes straw cluster-shaped Co-Fe2O3The electrode of nanocomposite, which is characterized in that the electrode includes
Active material, the active material include straw cluster-shaped Co-Fe2O3Nanocomposite.
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| CN110416527A (en) * | 2019-08-16 | 2019-11-05 | 济南大学 | A kind of method that plant Zea mays stalk prepares combination electrode material as template growth |
| CN111495368A (en) * | 2020-03-10 | 2020-08-07 | 江苏大学 | Co cluster/SiO2Composite material, preparation method and application |
| CN113275015A (en) * | 2021-05-25 | 2021-08-20 | 天津大学 | Biodiesel acid-base bifunctional magnetic nano catalyst, and preparation method and application thereof |
| CN114927676A (en) * | 2022-05-06 | 2022-08-19 | 益阳生力材料科技股份有限公司 | Three-dimensional cluster antimony material and preparation method and application thereof |
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| CN111495368B (en) * | 2020-03-10 | 2023-02-17 | 江苏大学 | Co cluster/SiO 2 Composite material, preparation method and application |
| CN113275015A (en) * | 2021-05-25 | 2021-08-20 | 天津大学 | Biodiesel acid-base bifunctional magnetic nano catalyst, and preparation method and application thereof |
| CN114927676A (en) * | 2022-05-06 | 2022-08-19 | 益阳生力材料科技股份有限公司 | Three-dimensional cluster antimony material and preparation method and application thereof |
| CN114927676B (en) * | 2022-05-06 | 2023-08-29 | 益阳生力材料科技股份有限公司 | Three-dimensional clustered antimony material and preparation method and application thereof |
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