CN107311119B - Hollow nanometer prism material of nickel cobalt diselenide, preparation method and application thereof - Google Patents

Hollow nanometer prism material of nickel cobalt diselenide, preparation method and application thereof Download PDF

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CN107311119B
CN107311119B CN201710502823.8A CN201710502823A CN107311119B CN 107311119 B CN107311119 B CN 107311119B CN 201710502823 A CN201710502823 A CN 201710502823A CN 107311119 B CN107311119 B CN 107311119B
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selenide
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麦立强
陈成
朱少华
安琴友
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Wuhan University of Technology WUT
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    • C01B19/00—Selenium; Tellurium; Compounds thereof
    • C01B19/002—Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions
    • 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
    • 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
    • H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • 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
    • H01M4/581—Chalcogenides or intercalation compounds thereof
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    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
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    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
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    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
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    • C—CHEMISTRY; METALLURGY
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    • 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
    • C01P2004/40—Particle morphology extending in three dimensions prism-like
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    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention belongs to the technical field of nano materials and electrochemistry, and particularly relates to a hollow nano prismatic material of nickel cobaltosic selenide and a preparation method thereof. The method comprises the following steps: 1) weighing 125mg and 0.111g of selenium dioxide powder from a nickel-cobalt precursor, dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature; 2) transferring the solution obtained in the step 1) into a reaction kettle, and heating to perform a solvothermal reaction; 3) and (3) centrifugally filtering the product obtained in the step 3), repeatedly washing the obtained precipitate, and drying. When the hollow nano prism material is used as an active material of a lithium ion battery cathode material, the hollow nano prism material has excellent cycle stability and high capacity, and is a potential application material of a high-power and long-life sodium ion battery.

Description

Hollow nanometer prism material of nickel cobalt diselenide, preparation method and application thereof
Technical Field
The invention belongs to the technical field of nano materials and electrochemistry, and particularly relates to a hollow nano prismatic material of nickel cobaltosic selenide and a preparation method thereof.
Background
With the rapid growth of global economy and population, environmental pollution and excessive consumption of fossil energy have increased the demand for green energy. Lithium ion batteries have been widely used in portable devices such as mobile phones, digital cameras, and notebook computers due to their high energy density and long cycle life, and are most expected to become power mobile power sources and are receiving much attention. At present, as a negative electrode material of a lithium ion battery which is commercialized, the theoretical capacity of graphite is low, and the low capacity limits the application of the lithium ion battery in hybrid electric vehicles and pure electric vehicles, so that the development of the negative electrode material of the lithium ion battery with high capacity and long service life is one of the frontiers and hotspots of the lithium ion battery research in the current environment-friendly resource-saving low-carbon economic era. The nano material has small volume, large specific surface area and high activity, is fully contacted with electrolyte when being used as an electrode material of a lithium ion battery, has short desorption distance of lithium ions and electrons, and has obvious advantages when being used as the electrode material of the lithium ion battery at high speed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hollow nickel cobaltosic selenide nanoprism material and a preparation method thereof aiming at the prior art, the process is simple, and the obtained hollow nickel cobaltosic selenide nanoprism material has excellent electrochemical performance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the hollow nickel cobaltosic selenide nano prism material is of a hollow structure, and the nano prism is 1-1.5 microns long and 150-250 nanometers wide.
The preparation method of the hollow nickel cobaltosic selenide nanoprism material is characterized by comprising the following steps:
1) weighing 125mg and 0.111g of selenium dioxide powder from a nickel-cobalt precursor, dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
2) transferring the solution obtained in the step 1) into a reaction kettle, and heating to perform a solvothermal reaction;
3) and (3) centrifugally filtering the product obtained in the step 3), repeatedly washing the obtained precipitate, and drying.
According to the scheme, the preparation method of the nickel-cobalt precursor comprises the following steps:
a) weighing 5g of polyvinylpyrrolidone (PVP) powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder in a mass ratio of 1:2, mixing, dissolving in an organic solution, and fully stirring at room temperature;
b) heating the solution obtained in the step a) for reaction under a condensation reflux device;
c) and c) centrifugally filtering the product obtained in the step b), washing the obtained precipitate, and drying to obtain the nickel-cobalt precursor.
According to the scheme, the polyvinylpyrrolidone PVP is PVP-K13, PVP-K17 or PVP-K30, wherein the MW of the PVP-K13 and the MW of the PVP-K17 are 10000.
According to the scheme, the reaction temperature in the step b) is 80-90 ℃, and the reaction time is 3-6 hours.
According to the scheme, the reaction temperature in the step 2) is 120-160 ℃, and the reaction time is 8-24 hours.
The hollow nickel cobaltosic selenide nanoprism material is applied as a negative electrode active material of a lithium ion or sodium ion battery.
The hollow nano prism of the invention presents a plurality of advantages in energy storage application due to novel and unique electrochemistry and structural characteristics, and in the lithium ion battery, the hollow structure provides effective buffer space for volume expansion of an electrode material in the charge-discharge cycle process, and the collapse and rupture of the structure are slowed down, so that the cycle stability and the cycle life of the electrode material are improved. Therefore, the hollow nano-prism structure is very suitable for being applied to electrode materials of lithium ion batteries.
The invention utilizes the space effect of the nickel cobaltoside selenide hollow nano prism material and the good mechanical property and thermal stability thereof, and utilizes the hollow structure to buffer the volume expansion brought by the charging and discharging processes, thereby improving the comprehensive electrochemical properties of the material, such as the cycling stability, the capacity and the like.
The invention has the beneficial effects that: based on the Kenkard effect, the shape of the hollow nano-prism is skillfully designed, and the hollow cobaltosic oxide nano-prism material is obtained by a simple solvothermal method. When the hollow nano prism material is used as an active material of a negative electrode material of a lithium ion battery, the hollow nano prism material has excellent cycle stability and high capacity, is a potential application material of a high-power and long-life sodium ion battery, and is used as the active material of the negative electrode material of the lithium ion battery at 100mA g-1The first capacity can reach 2011mAh g under the current density-1The capacity can still reach 1200mAh g after 30 times of circulation-1At 2000mA g-1The first capacity can still reach 1110mAh g under high current density-1And the discharge capacity can still reach 600mAh g after the circulation for 400 times-1The method has the advantages of simple process, low requirement on equipment by adopting a simple solvothermal method, capability of controlling the shape and size of the material by changing the concentration of reactants, the reaction temperature and the reaction time, high purity and good dispersibility of the prepared material, easiness in expanded industrial production and great contribution to market popularization.
Drawings
FIG. 1 is an XRD pattern of a hollow nickel cobaltosic selenide nanoprism material of example 1 of the present invention;
FIG. 2 is a scanning electron microscope image of a hollow nickel cobaltosic selenide nanoprism material of example 1 of the present invention;
FIG. 3 is a TEM image of a hollow nickel cobaltoside nanoprism material of example 1 of the present invention;
FIG. 4 shows the hollow cobaltosic oxide/nickel selenide nanoprism material of example 1 at 100mA g-1Battery cycle performance curve under current density;
FIG. 5 shows that the hollow cobaltosic oxide/nickel selenide nanoprism material of example 1 is 2000mA g-1Battery cycle performance curve under current density;
FIG. 6 is a transmission electron micrograph of a hollow nickel cobaltosic selenide nanosphere material of example 6 of the present invention.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1:
the preparation method of the hollow cobaltosic nickel selenide nano prism material comprises the following steps:
1) weighing 5g of polyvinylpyrrolidone PVP-K17 powder (MW-10000), 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder (the ratio is 1:2) and dissolving in 200mL of ethanol solution;
2) fully stirring the solution obtained in the step 1) at room temperature to obtain a solution;
3) heating the solution obtained in the step 2) to 85 ℃ in an oil bath kettle under a condensation reflux device for reacting for 4 hours;
4) centrifugally filtering the product obtained in the step 3), washing the obtained precipitate for at least 10 times by using absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain a nickel-cobalt precursor;
5) weighing 125mg and 0.111g of selenium dioxide powder of the precursor obtained in the step 4), dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
6) transferring the solution obtained in the step 5) into a reaction kettle, and fully reacting for 12 hours at the temperature of 160 ℃;
7) centrifugally filtering the product obtained in the step 6), repeatedly washing the obtained precipitate with absolute ethyl alcohol, and drying in a 70 ℃ drying oven;
taking the product of the nickel cobaltoside hollow nanoprism material of the example as an example, the structure of the material is determined by an X-ray diffractometer, and as shown in figure 1, an X-ray diffraction pattern (XRD) shows that no other impurity phase exists. As shown in FIG. 2, a Field Emission Scanning Electron Microscope (FESEM) test shows that the material is a hollow nano prism material, and the hollow nano prism material has a length of 1-1.5 microns and a width of 150-250 nanometers. As shown in fig. 3, Transmission Electron Microscopy (TEM) and High Resolution Transmission Electron Microscopy (HRTEM) tests showed that the nanostructure was a hollow structure and had a good crystal structure. The process of the invention is that the hollow cobaltosic oxide nano prism material is formed by the synergistic effect of the surfactant and the reducing agent (PVP and benzyl alcohol) and the kirkendall effect.
The hollow nickel cobaltoside nanoprism material prepared in the example is used as a negative active material of a lithium ion battery, and the rest steps of the preparation method of the lithium ion battery are the same as those of a common preparation method. The preparation method of the electrode slice comprises the following steps of adopting a cobaltosic oxide selenide hollow nano prism material as an active material, acetylene black as a conductive agent, carboxymethyl cellulose as a binder, wherein the mass ratio of the active material to the acetylene black to the carboxymethyl cellulose is 60:30: 10; mixing them according to a certain proportion, ultrasonic treating for 30 min, uniformly mixing them, uniformly coating them on the copper foil, and its active material loading quantity is 1.2-1.5g cm-1Filling the mixture into a wafer by using a punching machine, and drying the prepared negative plate in an oven at 60 ℃ for 24 hours for later use. 1M lithium hexafluorophosphate is dissolved in Ethylene Carbonate (EC) and dimethyl carbonate (DMC) to be used as electrolyte, a lithium sheet is used as a positive electrode, Celgard 2325 is used as a diaphragm, and CR 2016 type stainless steel is used as a battery shell to assemble the button type lithium ion battery.
Taking the hollow nickel cobaltoside nanoprism material prepared in the example as an active material as a lithium ion battery cathode active material, as shown in fig. 4, the amount of the hollow nickel cobaltoside nanoprism material is 100mA g-1The primary capacitance can reach 2011mAh g under the current density-1The capacity is still 1062m after 30 times of circulationAh g-1. As shown in FIG. 5, at 2000mA g-1Under the high current density, the first capacity can reach 1110mAh g-1After circulating for 400 times, the reversible capacity can reach 595mAh g-1. The result shows that the nickel cobaltoside selenide hollow nano prism material has excellent high-capacity characteristics and is a potential application material of a lithium ion battery with high power, high capacity and long service life.
Example 2:
the preparation method of the hollow cobaltosic nickel selenide nano prism material comprises the following steps:
1) weighing 5g of polyvinylpyrrolidone PVP-K17 powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder (the proportion is 1:2), and dissolving in 200mL of ethanol solution;
2) fully stirring the solution obtained in the step 1) at room temperature to obtain a solution;
3) heating the solution obtained in the step 2) to 83 ℃ in an oil bath kettle under a condensation reflux device for reacting for 4 hours;
4) centrifugally filtering the product obtained in the step 3), washing the obtained precipitate for at least 10 times by using absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain a nickel-cobalt precursor;
5) weighing 125mg and 0.111g of selenium dioxide powder of the precursor obtained in the step 4), dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
6) transferring the solution obtained in the step 5) into a reaction kettle, and fully reacting for 15 hours at the temperature of 160 ℃;
7) centrifugally filtering the product obtained in the step 6), repeatedly washing the obtained precipitate with absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain the hollow nickel cobaltoside nanoprism material;
taking the product of the example as an example, the material is a hollow nano prism material, and the length of the hollow nano prism is 1-1.5 micrometers, and the width of the hollow nano prism is 150-250 nanometers.
Taking the hollow cobaltosic oxide nickel selenide nanoprism nano material prepared by the embodiment as an example of the active material of the cathode of the lithium ion battery, the amount of the hollow cobaltosic oxide nickel selenide nanoprism nano material is 2000mA g-1The first discharge specific capacity can reach 1140mAh g under the current density-1The reversible specific capacity can still reach 585 after the cycle is repeated for 400 timesmAh g-1。
Example 3:
the preparation method of the hollow cobaltosic nickel selenide nano prism material comprises the following steps:
1) weighing 5g of polyvinylpyrrolidone PVP K-30 powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder (the proportion is 1:2), and dissolving in 200mL of ethanol solution;
2) fully stirring the solution obtained in the step 1) at room temperature to obtain a solution;
3) heating the solution obtained in the step 2) to 83 ℃ in an oil bath kettle under a condensation reflux device for reacting for 4 hours;
4) centrifugally filtering the product obtained in the step 3), washing the obtained precipitate for at least 10 times by using absolute ethyl alcohol, and drying in an oven at 60 ℃ to obtain a nickel-cobalt precursor;
5) measuring 125mg of the precursor obtained in the step 4), dissolving the precursor and 0.111g of selenium dioxide powder in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
6) transferring the solution obtained in the step 5) into a reaction kettle, and fully reacting for 12 hours at the temperature of 140 ℃;
7) centrifugally filtering the product obtained in the step 6), repeatedly washing the obtained precipitate with absolute ethyl alcohol, and drying in a 60 ℃ oven
Drying to obtain the hollow nickel cobaltosic selenide nanoprism material;
taking the product of the example as an example, the material is a hollow nano prism material, and the length of the hollow nano prism is 1-1.5 micrometers, and the width of the hollow nano prism is 150-250 nanometers.
Taking the hollow cobaltosic oxide nickel selenide nanoprism nano material prepared by the embodiment as an example of the active material of the cathode of the lithium ion battery, the amount of the hollow cobaltosic oxide nickel selenide nanoprism nano material is 2000mA g-1Under the current density, the first discharge specific capacity can reach 1151mAh g-1The reversible specific capacity can still reach 593mAh g after the circulation for 400 times-1。
Example 4:
the preparation method of the hollow cobaltosic nickel selenide nano prism material comprises the following steps:
1) weighing 5g of polyvinylpyrrolidone PVP-K13 powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder (the proportion is 1:2), and dissolving in 200mL of ethanol solution;
2) fully stirring the solution obtained in the step 1) at room temperature to obtain a solution;
3) heating the solution obtained in the step 2) to 84 ℃ in an oil bath kettle under a condensation reflux device for reacting for 5 hours;
4) centrifugally filtering the product obtained in the step 3), washing the obtained precipitate for at least 10 times by using absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain a nickel-cobalt precursor;
5) measuring 125mg of the precursor obtained in the step 4), dissolving the precursor and 0.111g of selenium dioxide powder in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
6) transferring the solution obtained in the step 5) into a reaction kettle, and fully reacting for 20 hours at the temperature of 140 ℃;
7) centrifugally filtering the product obtained in the step 6), repeatedly washing the obtained precipitate with absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain the hollow nickel cobaltoside nanoprism material;
taking the product of the example as an example, the material is a hollow nano prism material, and the length of the hollow nano prism is 1-1.5 micrometers, and the width of the hollow nano prism is 150-250 nanometers.
Taking the hollow cobaltosic oxide nickel selenide nanoprism nano material prepared by the embodiment as an example of the active material of the cathode of the lithium ion battery, the amount of the hollow cobaltosic oxide nickel selenide nanoprism nano material is 2000mA g-1The first discharge specific capacity can reach 1150mAh g under the current density-1The reversible specific capacity can still reach 588mAh g after the circulation for 400 times-1。
Example 5:
the preparation method of the hollow cobaltosic nickel selenide nano prism material comprises the following steps:
1) weighing 5g of polyvinylpyrrolidone PVP-K17 powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder (the proportion is 1:2), and dissolving in 200mL of ethanol solution;
2) fully stirring the solution obtained in the step 1) at room temperature to obtain a solution;
3) heating the solution obtained in the step 2) to 86 ℃ in an oil bath kettle under a condensation reflux device for reacting for 4 hours;
4) centrifugally filtering the product obtained in the step 3), washing the obtained precipitate for at least 10 times by using absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain a nickel-cobalt precursor;
5) weighing 125mg and 0.111g of selenium dioxide powder of the precursor obtained in the step 4), dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
6) transferring the solution obtained in the step 5) into a reaction kettle, and fully reacting for 20 hours at the temperature of 160 ℃;
7) centrifugally filtering the product obtained in the step 6), repeatedly washing the obtained precipitate with absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain the hollow nickel cobaltoside nanoprism material;
taking the product of the example as an example, the material is a hollow nano prism material, and the length of the hollow nano prism is 1-1.5 micrometers, and the width of the hollow nano prism is 150-250 nanometers.
Taking the hollow cobaltosic oxide nickel selenide nanoprism nano material prepared by the embodiment as an example of the active material of the cathode of the lithium ion battery, the amount of the hollow cobaltosic oxide nickel selenide nanoprism nano material is 2000mA g-1The first discharge specific capacity can reach 1136mAh g under the current density-1The reversible specific capacity can still reach 593mAh g after the cycle time of 400-1。
Comparative example 6:
the preparation method of the hollow cobaltosic selenide nanosphere material comprises the following steps:
1) weighing 5g of polyvinylpyrrolidone PVP-K17 powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder (the proportion is 1:2), and dissolving in 200mL of ethanol solution;
2) fully stirring the solution obtained in the step 1) at room temperature to obtain a solution;
3) heating the solution obtained in the step 2) to 80 ℃ in an oil bath kettle under a condensation reflux device for reacting for 4 hours;
4) centrifugally filtering the product obtained in the step 3), washing the obtained precipitate for at least 10 times by using absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain a nickel-cobalt precursor;
5) weighing 125mg and 0.111g of selenium dioxide powder of the precursor obtained in the step 4), dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature;
6) transferring the solution obtained in the step 5) into a reaction kettle, and fully reacting for 12 hours at 180 ℃;
7) centrifugally filtering the product obtained in the step 6), repeatedly washing the obtained precipitate with absolute ethyl alcohol, and drying in an oven at 70 ℃ to obtain the hollow nickel cobaltoside nanosphere material;
the material is hollow nanosphere material, and the diameter of the hollow nanosphere is 250-300 nm. The transmission electron microscope image is shown in FIG. 6.

Claims (6)

1. The hollow nickel cobaltosic selenide nano prism material is of a hollow structure, and the nano prism is 1-1.5 microns long and 150-250 nanometers wide.
2. The preparation method of the hollow nickel cobaltoside nanoprism material of claim 1, comprising the following steps:
1) weighing 125mg and 0.111g of selenium dioxide powder from a nickel-cobalt precursor, dissolving in 35ml of benzyl alcohol solution, and fully stirring at room temperature; the preparation method of the nickel-cobalt precursor comprises the following steps:
a) weighing 5g of polyvinylpyrrolidone (PVP) powder, 1.28g of nickel acetate tetrahydrate and cobalt acetate tetrahydrate powder in a mass ratio of 1:2, mixing, dissolving in an organic solution, and fully stirring at room temperature;
b) heating the solution obtained in the step a) for reaction under a condensation reflux device;
c) centrifugally filtering the product obtained in the step b), washing the obtained precipitate, and drying to obtain a nickel-cobalt precursor;
2) transferring the solution obtained in the step 1) into a reaction kettle, and heating to perform a solvothermal reaction;
3) centrifugally filtering the product obtained in the step 2), repeatedly washing the obtained precipitate, and drying.
3. The method of claim 2, wherein the polyvinylpyrrolidone PVP is PVP-K13, PVP-K17 or PVP-K30, wherein the PVP-K13 and PVP-K17 have a MW of 10000.
4. The method for preparing a hollow nickel cobaltosic selenide nanoprism material according to claim 2, wherein the reaction temperature in the step b) is 80-90 ℃ and the reaction time is 3-6 hours.
5. The method for preparing a hollow nickel cobaltosic selenide nanoprism material according to claim 2, wherein the reaction temperature in the step 2) is 120-160 ℃, and the reaction time is 8-24 hours.
6. The use of the hollow nickel cobaltoside nanoprism material of claim 1 as a negative active material in a lithium or sodium ion battery.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1384047A (en) * 2002-06-07 2002-12-11 清华大学 Synthesis of several metal selenides and tellurides as semiconductor material
CN106024395A (en) * 2016-07-01 2016-10-12 淮阴工学院 Preparation method and application of foamed nickel-based Ni3Se2 nano material
CN106098402A (en) * 2016-08-11 2016-11-09 浙江大学 A kind of CoNiSe for ultracapacitor2nano-array material and preparation method thereof
CN106558689A (en) * 2016-12-05 2017-04-05 东北师范大学 A kind of electrochemical in-situ method prepares the method for two-arch tunnel hybrid metal selenides and its application

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3993089B2 (en) * 2002-12-26 2007-10-17 良幸 川添 Multiple particles and method for producing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1384047A (en) * 2002-06-07 2002-12-11 清华大学 Synthesis of several metal selenides and tellurides as semiconductor material
CN106024395A (en) * 2016-07-01 2016-10-12 淮阴工学院 Preparation method and application of foamed nickel-based Ni3Se2 nano material
CN106098402A (en) * 2016-08-11 2016-11-09 浙江大学 A kind of CoNiSe for ultracapacitor2nano-array material and preparation method thereof
CN106558689A (en) * 2016-12-05 2017-04-05 东北师范大学 A kind of electrochemical in-situ method prepares the method for two-arch tunnel hybrid metal selenides and its application

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