CN109205671A - One kind is by VS2The preparation method and application of the graded structure ball of nanometer sheet composition - Google Patents

One kind is by VS2The preparation method and application of the graded structure ball of nanometer sheet composition Download PDF

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Publication number
CN109205671A
CN109205671A CN201811264825.9A CN201811264825A CN109205671A CN 109205671 A CN109205671 A CN 109205671A CN 201811264825 A CN201811264825 A CN 201811264825A CN 109205671 A CN109205671 A CN 109205671A
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graded structure
nanometer sheet
structure ball
sodium
preparation
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CN201811264825.9A
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CN109205671B (en
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魏明灯
王建标
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Fuzhou University
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Fuzhou University
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • 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
    • 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
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention provides one kind by VS2The preparation and application as anode material of lithium-ion battery of the graded structure ball of nanometer sheet composition, are prepared using simple one step hydro thermal method by VS2Nanometer sheet group Ingredient Grade ball.Due to VS2With metallic character, and ultra-thin nanometer sheet can effectively shorten the transmission road of ion.Electrochemical research the result shows that, current density be 2 A/g under, circulation 1000 circle after, specific capacity maintains 560 mAh/g, have good cyclical stability and high rate performance.

Description

One kind is by VS2The preparation method and application of the graded structure ball of nanometer sheet composition
Technical field
The invention belongs to sodium-ion battery fields, and in particular to one kind is by VS2The graded structure ball of nanometer sheet composition Preparation and as anode material of lithium-ion battery application.
Background technique
So far, lithium ion battery, which has been obtained, is widely applied, however lithium resource is deficient, in contrast, metal Sodium rich reserves and cheap.Therefore sodium-ion battery becomes a kind of novel battery of potential substitution lithium battery.So And the radius of sodium ion is larger in sodium-ion battery, and biggish volume expansion and lower energy density etc. can be caused to ask Topic.Suitable sodium ion negative electrode material is developed accordingly, already has become the top priority of researcher and compeling for modern society It is essential and wants.
The VS not having also at present2The related patents report of the preparation of the graded structure ball of nanometer sheet composition.
Summary of the invention
The purpose of the present invention is to provide one kind by VS2Nanometer sheet composition graded structure ball preparation and as sodium from The application of sub- cell negative electrode material is prepared using simple one step hydro thermal method by VS2Nanometer sheet group Ingredient Grade ball.Due to VS2 With metallic character, and ultra-thin nanometer sheet can effectively shorten the transmission road of ion.Electrochemical research the result shows that, Current density is under 2 A/g, and after 1000 circle of circulation, specific capacity maintains 560 mAh/g.Meanwhile in the high rate performance of Fig. 3 In, when electric current comes back to 0.2 A/g, capacity come back to before capacity, show stable electrochemical property.
To achieve the above object, the present invention adopts the following technical scheme:
By VS2The VS of nanometer sheet composition2The preparation method of graded structure ball: by 0.35g VO (acac)2, 0.2g CH3CSNH235ml (CH is successively put into 0.1g glucose2OH)2In and stir 1 hour.Then it puts into 200 DEG C of baking ovens Reaction is taken out after 24 hours, is cooled to room temperature to it.Centrifugation, and washed several times with ethyl alcohol and deionized water, put 70 DEG C of vacuum into Baking oven drying, obtains final product.It thus obtains by VS2The VS of nanometer sheet composition2Graded structure ball.
The assembling of sode cell: in mass ratio: VS2Graded structure ball: acetylene black: hydroxymethyl cellulose=7:2:1 mixing It is coated on copper foil after uniformly and does cathode, reference electrode and be sodium to electrode, electrolyte is 1 M NaSO3CF3Diethylene glycol (DEG) Dimethyl ether solution, all operations of sode cell assembling carry out in glove box.
Remarkable advantage of the invention is: due to VS2With metallic character, and ultra-thin nanometer sheet can effectively contract The transmission road of short ion.Electrochemical research the result shows that, current density be 2 A/g under, circulation 1000 circle after, specific capacity Maintain 560 mA h/g.Meanwhile in the high rate performance of Fig. 3, when electric current comes back to 0.2 A/g, capacity is come back to Capacity before, the stable electrochemical property shown.Due to VS2Graded structure ball be by ultrathin nanometer piece (< 5 nm) from What assembling was formed, three-dimensional porous structure characteristic facilitates the diffusion of electrolyte and inhibits nanometer sheet in charge and discharge process Reunite, maintains the stabilization of chemical property, and its ultra-thin nanometer sheet is also beneficial to shorten the transmission path of sodium ion.
Detailed description of the invention
Fig. 1 is VS2The scanning electron microscope (SEM) photograph of graded structure ball；As shown in Figure 1, VS2Spherical shape with graded structure Looks.
Fig. 2 is VS2Long circulating performance map of the graded structure ball under the current density of 2 A/g；As shown in Figure 2, in electricity Current density is under 2 A/g, and after 1000 circle of circulation, specific capacity maintains 560 mA h/g.
Fig. 3 is VS2The high rate performance figure of graded structure ball；From the figure 3, it may be seen that holding when electric current comes back to 0.2 A/g The capacity before having come back to is measured, VS is shown2The stable electrochemical property of graded structure ball.
Specific embodiment
The present invention is further illustrated by the following examples, but protection scope of the present invention is not limited to following reality Apply example.
Embodiment 1
One kind is by VS2The preparation method of the graded structure ball of nanometer sheet composition, comprising the following steps:
By 0.35g VO (acac)2, 0.2g CH3CSNH235ml (CH is successively put into 0.1g glucose2OH)2In and stir It mixes 1 hour, then puts into and taken out after being reacted 24 hours in 200 DEG C of baking ovens, is cooled to room temperature to it, be centrifuged, and with ethyl alcohol and go Ion water washing several times, is put 70 DEG C of vacuum drying oven drying into, is obtained by VS2The VS of nanometer sheet composition2Graded structure ball.
The VS2Application of the graded structure ball as negative electrode material in sodium-ion battery, the group of the sodium-ion battery Dress: in mass ratio: VS2Graded structure ball: acetylene black: hydroxymethyl cellulose=7:2:1 is coated on copper foil after mixing Do cathode, reference electrode and be sodium to electrode, electrolyte is 1 M NaSO3CF3Diethylene glycol dimethyl ethereal solution, sodium ion All operations of battery assembly carry out in glove box.
Fig. 1 is VS2The scanning electron microscope (SEM) photograph of graded structure ball；As shown in Figure 1, VS2Spherical shape with graded structure Looks.Fig. 2 is VS2Long circulating performance map of the graded structure ball under the current density of 2 A/g；As shown in Figure 2, in current density For under 2 A/g, after 1000 circle of circulation, specific capacity maintains 560 mA h/g.Fig. 3 is VS2The multiplying power of graded structure ball Performance map；From the figure 3, it may be seen that when electric current comes back to 0.2 A/g, capacity come back to before capacity, show VS2Point The stable electrochemical property of hierarchical organization ball.Fig. 2 and Fig. 3 show VS2Graded structure ball has good cyclical stability And high rate performance.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with Modification, is all covered by the present invention.

Claims (2)

1. one kind is by VS2The preparation method of the graded structure ball of nanometer sheet composition, which comprises the following steps:
By 0.35g VO (acac)2, 0.2gCH3CSNH235ml (CH is successively put into 0.1g glucose2OH)2In and stir 1 hour, then put into and taken out after being reacted 24 hours in 200 DEG C of baking ovens, is cooled to room temperature to it, be centrifuged, and with ethyl alcohol and go from Sub- water washing several times, is put 70 DEG C of vacuum drying oven drying into, is obtained by VS2The VS of nanometer sheet composition2Graded structure ball.
2. VS made from preparation method as described in claim 12The application of graded structure ball, which is characterized in that the VS2 Application of the graded structure ball as negative electrode material in sodium-ion battery, the assembling of the sodium-ion battery: in mass ratio: VS2 Graded structure ball: acetylene black: hydroxymethyl cellulose=7:2:1 is coated on copper foil after mixing does cathode, reference electrode Be sodium to electrode, electrolyte is 1 M NaSO3CF3Diethylene glycol dimethyl ethereal solution, sodium-ion battery assembles all operations It is carried out in glove box.
CN201811264825.9A 2018-10-29 2018-10-29 From VS2Preparation method and application of graded-structure ball composed of nanosheets Active CN109205671B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113929144A (en) * 2021-10-15 2022-01-14 福州大学 Metallic phase 1T-WS2Hollow sphere and preparation method and application thereof
CN114975963A (en) * 2022-06-28 2022-08-30 陕西科技大学 VS for synergistically promoting high-capacity high-pseudocapacitance sodium storage 2 /S composite material and preparation method and application thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819507A (en) * 2016-04-29 2016-08-03 陕西科技大学 Preparation method and application of nanosheet self-assembled microflower-shaped VS2

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819507A (en) * 2016-04-29 2016-08-03 陕西科技大学 Preparation method and application of nanosheet self-assembled microflower-shaped VS2

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113929144A (en) * 2021-10-15 2022-01-14 福州大学 Metallic phase 1T-WS2Hollow sphere and preparation method and application thereof
CN114975963A (en) * 2022-06-28 2022-08-30 陕西科技大学 VS for synergistically promoting high-capacity high-pseudocapacitance sodium storage 2 /S composite material and preparation method and application thereof

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