CN114853065A - W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material - Google Patents

W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material Download PDF

Info

Publication number
CN114853065A
CN114853065A CN202210582240.1A CN202210582240A CN114853065A CN 114853065 A CN114853065 A CN 114853065A CN 202210582240 A CN202210582240 A CN 202210582240A CN 114853065 A CN114853065 A CN 114853065A
Authority
CN
China
Prior art keywords
self
doped
electrode material
nano
assembled
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.)
Pending
Application number
CN202210582240.1A
Other languages
Chinese (zh)
Inventor
高林
李彪阳
陶华超
颜波
张露露
杨学林
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.)
China Three Gorges University CTGU
Original Assignee
China Three Gorges University CTGU
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 China Three Gorges University CTGU filed Critical China Three Gorges University CTGU
Priority to CN202210582240.1A priority Critical patent/CN114853065A/en
Publication of CN114853065A publication Critical patent/CN114853065A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium
    • C01G31/02—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • 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
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C01P2004/34—Spheres hollow
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C01P2004/36—Spheres fragmented
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/50—Agglomerated particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention provides a WCl 6 Doping with V 2 O 5 A preparation method of self-assembly nano-sheet balls. Dispersing ammonium metavanadate in isopropanol solution, adding WCl after completely and uniformly dispersing 6 And stirring and then preparing the product by a hydrothermal method. Finally, preparing W-doped V by high-temperature oxidation in a muffle furnace 2 O 5 Nanosheet spheres. The W is doped with V 2 O 5 The self-assembly nano-sheet ball electrode material takes ammonium metavanadate as a raw material, the ammonium metavanadate is uniformly dispersed in an isopropanol solution through magnetic stirring, and then WCl is added 6 Stirring for four hours, transferring the mixture into a high-pressure kettle to perform chemical reaction under the condition of high temperature and high pressure,finally annealing in the air to obtain W-doped V 2 O 5 Self-assembled nanosheet spheres. The electrode material has simple synthesis method. Doping V with W 2 O 5 The zinc ion half-cell assembled by the self-assembled nano-sheet ball positive plate has the advantages of obviously improved capacity and stable cycle performance, and has potential application value in a water system zinc ion cell.

Description

W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material
Technical Field
The invention relates to a novel W-doped V 2 O 5 The self-assembled nano-sheet ball electrode material is used as a positive electrode material of a zinc ion battery, and belongs to the field of electrochemistry and new energy materials.
Background
With the rapid development of social economy, Lithium Ion Batteries (LIBs) have been rapidly developed as efficient energy storage devices in various application fields such as portable electronic products and electric vehicles. In addition, some innovative battery technologies, such as Sodium Ion Batteries (SIBs) and Potassium Ion Batteries (PIBs), are also being gradually explored due to the problems of limited reserves and rising lithium prices. However, all of these batteries still face great challenges in terms of safety and environmental issues due to the widespread use of organic electrolytes. Based on this, aqueous zinc ion batteries (azebs) are gaining more and more attention and, by virtue of their unique advantages, are considered to be one of the most promising energy storage devices. On one hand, the raw material resource is rich, the global distribution is wide, and the price is low, thereby meeting the requirement of large-scale application. On the other hand, the use of aqueous electrolytes allows to completely avoid the common risks of leakage, combustion and toxicity of conventional organic electrolytes, which is in large part in line with the expectations of rechargeable batteries that are safe for the consumer to use. Layered transition metal oxides, in which V is a focus of research in the field of energy, have been the focus of research 2 O 5 The lithium ion battery is widely applied to super capacitors, lithium ion batteries and sodium ion batteries, but the sodium ion battery is rarely used as a positive electrode of a water-based zinc ion battery. V 2 O 5 The method has the advantages of low cost, rich resources and high safety, and has a stable layered structure of an open frame, thereby attracting great interest of researchers. However, V 2 O 5 In practical application, the further application of the method is limited by the delayed reaction kinetics caused by low conductivity and weak structural stability. The W-doped V is synthesized by a hydrothermal method 2 O 5 The self-assembly nano-sheet ball material obviously improves the conductivity and the cycling stability of the electrode material by doping metal cations. The zinc ion battery positive electrode shows high capacity and good cycle performance and has great potential application value.
Disclosure of Invention
The invention aims to obtain W-doped V by taking ammonium metavanadate as a raw material, utilizing the high-temperature and high-pressure environment reaction of the ammonium metavanadate through a hydrothermal reaction and further annealing in air 2 O 5 Self-assembled nanosheet spheres. The raw materials of the invention are ammonium metavanadate, isopropanol and tungsten hexachloride. In the preparation process of the material, firstly, ammonium metavanadate is placed in a container, isopropanol solution is added and placed on a magnetic stirrer for stirring, tungsten hexachloride is added after the ammonium metavanadate is completely dispersed, the mixture is continuously stirred to form uniform solution, and then the uniform solution is transferred into a high-pressure reaction kettle and is stirred at 180 DEG and 240 DEG o C hydrothermal reaction for 10-24 h, and then further in air 350- o Annealing to obtain W-doped V 2 O 5 Self-assembled nanosheet spheres.
W doping V of the invention of this patent 2 O 5 The self-assembled nano-sheet spherical zinc ion negative electrode material and the preparation method thereof have the following characteristics:
(1) the preparation method is low in preparation cost, simple in experimental process and easy to operate.
(2) The W-doped V obtained by the invention 2 O 5 The diameter of the self-assembled nano-sheet sphere is about 5-6 μm, the interior of the self-assembled nano-sheet sphere is of a hollow structure, and the sphere is formed by self-assembling the nano-sheets.
(3) Preparation of the resulting W-doped V 2 O 5 The mass of the active substance of the self-assembled nano-sheet ball material is about 1.5 mg, and the electrode still has stable electrochemical cycle performance under the condition of the loading of the active substance.
(4) Preparation of the resulting W-doped V 2 O 5 The self-assembled nano-sheet spherical material has good electrochemical performance when tungsten hexachloride is selected as a tungsten source, and the nano-sheet spherical material has complete appearance and uniform distribution.
(5) Preparation of the resulting W-doped V 2 O 5 Self-assembled nano-sheet sphereThe solution shows better electrochemical performance when isopropanol is used.
(6) Preparation of the resulting W-doped V 2 O 5 The self-assembly nano-sheet ball material uses isopropanol solution and is doped with 4 percent WCl 6 The nano-sheet has the best electrochemical performance, and the nano-sheet has complete spherical appearance and uniform distribution.
(7) Preparation of the resulting W-doped V 2 O 5 Self-assembled nanosheet sphere material using isopropanol solution as the best choice and WCl 6 The nano-sheet is an optimal tungsten source and shows the best electrochemical performance when doped with 4%, and the nano-sheet has complete spherical appearance and uniform distribution.
Description of the drawings:
fig. 1 is an XRD pattern of the samples prepared in example 1, example 2, example 3, and example 4.
Fig. 2 is an SEM image of the sample prepared in example 1.
FIG. 3 is a graph showing the charge and discharge performance of the samples prepared in example 1 (a) and (b) cycle performance
Fig. 4 is an SEM image of the sample prepared in example 2.
Fig. 5 is a graph of charge and discharge performance (a) and (b) cycle performance of the sample prepared in example 2.
Fig. 6 is an SEM image of the sample prepared in example 3.
Fig. 7 is a graph of charge and discharge performance (a) and (b) cycle performance of the sample prepared in example 3.
Fig. 8 is an SEM image of the sample prepared in example 4.
Fig. 9 is a graph of charge and discharge performance (a) and (b) cycle performance of the sample prepared in example 4.
Fig. 10 is a graph of the cycle performance of the samples prepared in example 5.
FIG. 11 is a graph of the cycle performance of the samples prepared in example 6.
FIG. 12 is a graph of the cycle performance of the samples prepared in example 7.
FIG. 13 is a graph of the cycle performance of the samples prepared in example 8.
FIG. 14 is a graph of the cycle performance of the samples prepared in example 9.
The specific implementation mode is as follows:
example 1
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of isopropanol solution are added and placed on a magnetic stirrer and stirring is continued for 1 h. The above solution was transferred to a 100 mL autoclave at 200 deg.C o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain pure phase V 2 O 5 Nanosheet ball, denoted V 2 O 5 FIG. 1 shows the pure phase V obtained by the preparation 2 O 5 XRD pattern of nanospheres. The XRD pattern and V can be seen 2 O 5 (JCPDS number 72-0598) cards. FIG. 2 for synthesized V 2 O 5 SEM characterization of nanospheres. The V produced can be seen from FIG. 2(a) 2 O 5 Is nanosphere with radius of 0.2-0.4 μm. V 2 O 5 The nanospheres are uniformly distributed, and the inner part of the nanospheres is in a hollow structure as can be seen from the broken nanospheres in fig. 2 (b). The zinc-ion battery is assembled as a positive electrode material in 1A g -1 The charge and discharge test was carried out at current density, the first fifty cycles causing the active material to progressively open more active sites by self-activation, having 257.2 mAh g after 200 cycles of long cycle -1 (FIG. 3b), showing better electrochemical performance.
Example 2
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of isopropanol solution are added and placed on a magnetic stirrer and stirring is continued for 1 h. Adding 0.1 mmoleWCl 6 (2%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Nanosheet, denoted V 2 O 5 W2, FIG. 1 shows the W doping V obtained 2 O 5 XRD pattern of the nano-sheet. The XRD pattern and V can be seen 2 O 5 (JCPDSNo. 72-0598) card consistent. FIG. 4 shows the resultant W is doped with V 2 O 5 SEM characterization of nanoplatelets. The W-doped V prepared can be seen from FIG. 4 2 O 5 Nanosheets, assembled as a zinc-ion half cell using the same as the positive electrode material, in 1Ag -1 The charge and discharge test was performed at current density, and the first fifty cycles gradually opened more active sites by the active material through self-activation, still having 314.6 mAh g after 200 cycles of long cycle -1 . Although W doping provides some capacity improvement, hollow nanosheet spheres are not formed at this doping level and therefore performance is not optimal.
Example 3
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of isopropanol solution are added and placed on a magnetic stirrer and stirring is continued for 1 h. Adding 0.2 mmol WCl 6 (4%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Self-assembled nanosheet ball, denoted V 2 O 5 W4, FIG. 1 shows the W doping V obtained 2 O 5 XRD pattern of self-assembled nano-sheet sphere. The XRD pattern and V can be seen 2 O 5 (JCPDSNo. 72-0598) card. Doping the resultant W with V as shown in FIG. 6 2 O 5 SEM characterization of self-assembled nanosheet spheres. The W-doped V prepared can be seen from FIG. 6(a) 2 O 5 The radius of the self-assembly nano-sheet ball is 2-3 μm. V 2 O 5 The nanosheet balls formed by the nanosheets through self-assembly are uniform in distribution and complete in shape, and the nanosheet balls broken in the figure 6(b) can be seen to be internally hollow and have the best capacity increasing effect under the doping amount. The zinc-ion battery is assembled as a positive electrode material in 1A g -1 The charge and discharge test was performed at current density, and the first fifty cycles gradually opened more active sites for the active material by self-activation, still having 423.5 mAh g after 200 cycles of long cycle -1 Coulombic efficiency was close to 100% (fig. 7b), showing the best electrochemical performance.
Example 4
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of isopropanol solution are added and placed on a magnetic stirrer and stirring is continued for 1 h. Adding 0.3 mmol WCl 6 (6%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Self-assembled nanosheet ball, denoted V 2 O 5 W6, FIG. 1 shows the W doping V obtained 2 O 5 XRD pattern of self-assembled nano-sheet sphere. The XRD pattern and V can be seen 2 O 5 (JCPDSNo. 72-0598) card. Doping the resultant W with V as shown in FIG. 8 2 O 5 SEM characterization of self-assembled nanosheet spheres. The W-doped V prepared can be seen from FIG. 8(a) 2 O 5 The radius of the self-assembled nano-sheet ball is 1-3 μm. At this doping level V 2 O 5 The nano-sheet balls are broken more and the shapes are not uniform and complete any more, and the broken nano-sheet balls in the graph of fig. 8(b) can be seen to have hollow structures inside. The zinc-ion battery is assembled as a positive electrode material in 1A g -1 The charge and discharge test was performed at current density, the first fifty cycles causing the active material to progressively open more active sites by self-activation, with 293.6 mAh g after 200 cycles of long circulation -1 (FIG. 9b), although the W doping increases the capacity, the spherical shape of the hollow nanosheets at this doping level is severely broken and therefore the performance is not optimal.
Example 5
Placing 5 mmol ammonium metavanadate powder in a beaker, adding 60 mL ethylene glycol solution, placing the beaker on a magnetic stirrer, continuously stirring for 1h, transferring the solution into a 100 mL high-pressure reaction kettle, and reacting at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain pure phase V 2 O 5 Is marked as V 2 O 5 The positive electrode material was assembled into a zinc ion half cell at 1A g -1 The charge and discharge test was performed at current density, with the first thirty cycles causing the active material to progressively open more active sites by self-activation, with 280 mAh g after 200 cycles -1 (FIG. 10).
Example 6
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of ethylene glycol solution are added and the mixture is placed on a magnetic stirrer and stirred for 1 h. Adding 0.1 mmol of Na 2 WO 4 (2%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Is marked as V 2 O 5 -W2 assembled as a positive electrode material into a zinc ion half cell at 1A g -1 The charge and discharge test was performed at current density, with the first thirty cycles causing the active material to progressively open more active sites by self-activation, with 256 mAh g after 200 cycles -1 It can be seen that ethylene glycol is not the optimal solvent choice, Na 2 WO 4 Nor is it the optimum tungsten source choice.
Example 7
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of ethylene glycol solution are added and the mixture is placed on a magnetic stirrer and stirred for 1 h. Adding 0.2 mmol of Na 2 WO 4 (4%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Is marked as V 2 O 5 -W4 assembled as a positive electrode material into a zinc ion half cell at 1A g -1 The charge and discharge test was performed at current density, with the first thirty cycles causing the active material to progressively open more active sites by self-activation, with 247 mAh g after 200 cycles -1 。
Example 8
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of ethylene glycol solution are added and the mixture is placed on a magnetic stirrer and stirred for 1 h. Adding 0.3 mmol of Na 2 WO 4 (6%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Is marked as V 2 O 5 -W6 assembled as a positive electrode material into a zinc ion half cell at 1A g -1 The charge and discharge test was performed at current density, with the first thirty cycles causing the active material to progressively open more active sites by self-activation, with 319 mAh g after 200 cycles -1 。
Example 9
5 mmol of ammonium metavanadate powder are placed in a beaker and 60 mL of ethylene glycol solution are added and the mixture is placed on a magnetic stirrer and stirred for 1 h. Adding 0.4mmol of Na 2 WO 4 (8%) and stirring was continued for 4h and the above solution was transferred to a 100 mL autoclave at 200% o C carrying out hydrothermal reaction for 24 hours, and further carrying out 350 hours in air o C annealing for 2 h to obtain W-doped V 2 O 5 Is marked as V 2 O 5 -W8 assembled as a positive electrode material into a zinc ion half cell at 1A g -1 The charge and discharge test was performed at current density, with the first thirty cycles causing the active material to progressively open more active sites by self-activation, with 295 mAh g after 200 cycles -1 。

Claims (7)

1. W-doped V 2 O 5 The self-assembly nanometer sheet ball electrode material is characterized in that: the W is doped with V 2 O 5 The self-assembly nano-sheet ball is a nano-sheet ball formed by self-assembly of nano-sheets, the diameter of the nano-sheet ball is 5-6 mu m, and the interior of the nano-sheet ball is of a hollow structure.
2. W doped V according to claim 1 2 O 5 The self-assembly nanometer sheet ball electrode material is characterized in that: w doping with V 2 O 5 The mass of the active substance of the self-assembled nano-sheet ball material is 1-1.5 mg/cm 2 。
3. W doped V according to any one of claims 1 to 2 2 O 5 The preparation method of the self-assembly nanosheet ball electrode material is characterized by comprising the following steps of:
weighing a certain amount of ammonium metavanadate, adding the ammonium metavanadate into an isopropanol solution, stirring the solution into a uniform solution, and adding a certain amount of WCl into the solution 6 Then, the mixture is continuously magnetically stirred until a uniform solution is formed, the uniform solution is transferred into a high-pressure kettle for hydrothermal reaction, and then the mixture is annealed in the air to obtain W-doped V 2 O 5 Self-assembled nanosheet spheres.
4. According to the claimsW doping V of claim 3 2 O 5 The preparation method of the self-assembly nanosheet ball electrode material is characterized by comprising the following steps of: WCl 6 The addition amount of the (B) is 2-10% of the ammonium metavanadate, and the isopropanol is excessive.
5. W doped V according to claim 3 2 O 5 The preparation method of the self-assembly nanosheet ball electrode material is characterized by comprising the following steps of: the hydrothermal reaction temperature in the step is 180- o And C, hydrothermal heating for 10-24 h.
6. W doped V according to claim 3 2 O 5 The preparation method of the self-assembly nanosheet ball electrode material is characterized by comprising the following steps of: the annealing in the step is carried out in air at the temperature of 350- o C, the heating rate is 1-3 ℃/min, and the annealing is carried out for 1-5 h.
7. W doped V according to claim 1 or 2 2 O 5 The self-assembled nano-sheet ball electrode material is applied to the preparation of the positive electrode material of the zinc ion battery.
CN202210582240.1A 2022-05-26 2022-05-26 W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material Pending CN114853065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210582240.1A CN114853065A (en) 2022-05-26 2022-05-26 W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210582240.1A CN114853065A (en) 2022-05-26 2022-05-26 W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material

Publications (1)

Publication Number Publication Date
CN114853065A true CN114853065A (en) 2022-08-05

Family

ID=82642079

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210582240.1A Pending CN114853065A (en) 2022-05-26 2022-05-26 W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material

Country Status (1)

Country Link
CN (1) CN114853065A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104485442A (en) * 2014-12-05 2015-04-01 陕西科技大学 Preparation method of self-assembled ball-flower type cathode material for lithium ion battery
CN104779382A (en) * 2015-02-06 2015-07-15 武汉理工大学 Three-dimensional hierarchical heterostructure nano-material, and gradient hydro-thermal preparation method and application thereof
WO2017036069A1 (en) * 2015-09-02 2017-03-09 武汉理工大学 V2o5 hollow micron wire ball with nanowire three-dimensional winding structure and preparation method therefor and use thereof
CN106784777A (en) * 2017-02-20 2017-05-31 武汉理工大学 Alkaline earth metal vanadate electrode material and its preparation method and application
CN107069020A (en) * 2017-02-17 2017-08-18 武汉理工大学 A kind of preparation method of lithium ion battery nickel doping vanadic anhydride nano-sheet positive electrode
CN110518202A (en) * 2019-08-05 2019-11-29 三峡大学 A kind of V of self-supporting2O5/ rGO nano-array sodium-ion battery material and preparation method thereof
CN111153436A (en) * 2019-12-31 2020-05-15 中国地质大学（武汉） Self-assembly NaV6O15Nanosheet microsphere and preparation method and application thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104485442A (en) * 2014-12-05 2015-04-01 陕西科技大学 Preparation method of self-assembled ball-flower type cathode material for lithium ion battery
CN104779382A (en) * 2015-02-06 2015-07-15 武汉理工大学 Three-dimensional hierarchical heterostructure nano-material, and gradient hydro-thermal preparation method and application thereof
WO2017036069A1 (en) * 2015-09-02 2017-03-09 武汉理工大学 V2o5 hollow micron wire ball with nanowire three-dimensional winding structure and preparation method therefor and use thereof
CN107069020A (en) * 2017-02-17 2017-08-18 武汉理工大学 A kind of preparation method of lithium ion battery nickel doping vanadic anhydride nano-sheet positive electrode
CN106784777A (en) * 2017-02-20 2017-05-31 武汉理工大学 Alkaline earth metal vanadate electrode material and its preparation method and application
CN110518202A (en) * 2019-08-05 2019-11-29 三峡大学 A kind of V of self-supporting2O5/ rGO nano-array sodium-ion battery material and preparation method thereof
CN111153436A (en) * 2019-12-31 2020-05-15 中国地质大学（武汉） Self-assembly NaV6O15Nanosheet microsphere and preparation method and application thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JIQI ZHENG ET AL.: "Improvement of the specific capacitance of V2O5 nanobelts as supercapacitor electrode by tungsten doping", 《MATERIALS CHEMISTRY AND PHYSICS》, vol. 186, pages 5 - 10, XP029837433, DOI: 10.1016/j.matchemphys.2016.11.027 *
代于婷等: "钨掺杂V2O5的制备及其超级电容器性能", 《广州化工》, vol. 49, no. 23, pages 47 *
梁健等: "溶剂热法制备α-V2O5空心纳米微球及其电化学性能研究", 《化工新型材料》, vol. 45, no. 9, pages 121 *

Similar Documents

Publication Publication Date Title
CN105742602B (en) A kind of sodium-ion battery cathode Sn/MoS2/ C composite and preparation method thereof
CN107863485A (en) A kind of water system Zinc ion battery positive electrode
CN103326007B (en) The preparation method of three-dimensional graphite thiazolinyl tin dioxide composite material and application thereof
CN104733708B (en) A kind of preparation method of the nickle cobalt lithium manganate composite of Surface coating LiFePO4
CN109659544B (en) Preparation method of graphene-coated bimetallic sulfide lithium/sodium ion battery negative electrode material
CN105185989B (en) A kind of sodium-ion battery conducting polymer/SnSexNano flower anode material and preparation method thereof
CN103594694A (en) Preparation method of spherical lithium titanate ion battery cathode material
CN107895789A (en) Micron ball nano material of redox graphene cladding vanadium phosphate sodium and its preparation method and application
CN105609769A (en) Preparation method for multi-level structured molybdenum disulfide microsphere negative electrode material of lithium battery
CN105836800A (en) Synthetic method for dimension-controllable vanadium dioxide nano material, and lithium ion battery
CN109942024A (en) A kind of mangano-manganic oxide-graphene film nano-complex and the preparation method and application thereof
CN111933942A (en) Sodium ion battery Na meeting high-rate discharge cycle performance2/3Mn1/2Fe1/4Co1/4O2Controllable regulation and control method of anode material
CN108400296A (en) Heterogeneous element doped ferroferric oxide/graphene negative material
CN107910541A (en) A kind of preparation method of the spherical composite material of negative electrode of lithium ion battery
CN111320206A (en) 2D-CaV for lithium ion and sodium ion battery4O9Nano sheet material and preparation method thereof
CN108899520B (en) Globose Na3V2O2(PO4)2F-GO nano composite material and preparation method and application thereof
CN102275996A (en) Preparation method for nano spinel lithium manganate of lithium ion battery anode material
CN109346717A (en) A kind of self-supporting NaxMnO2Array sodium-ion battery positive material and preparation method thereof
CN107039643B (en) A kind of anode material for lithium ion battery and preparation method thereof
CN108258204A (en) Lithium-sulfur battery composite cathode material, preparation method and lithium-sulfur cell
CN107628639A (en) The preparation method of inner porosity spherical lithium titanate ion battery cathode material
CN107910525A (en) A kind of preparation method of N doping manganese carbonate and its compound
CN107331831A (en) A kind of sijna nano composite material and preparation method thereof
CN114031125B (en) Preparation method of ternary nano sheet@carbon nano tube anode material, product and application thereof
CN114853065A (en) W-doped V 2 O 5 Preparation method of self-assembled nano-sheet ball electrode material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination