CN113224301A - Nickel oxide composite material and preparation method and application thereof - Google Patents

Nickel oxide composite material and preparation method and application thereof Download PDF

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CN113224301A
CN113224301A CN202110482060.1A CN202110482060A CN113224301A CN 113224301 A CN113224301 A CN 113224301A CN 202110482060 A CN202110482060 A CN 202110482060A CN 113224301 A CN113224301 A CN 113224301A
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nickel oxide
oxide composite
composite material
battery
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范浩森
林晋毅
郑文芝
刘芝婷
杨伟
蔡泽林
黄卓伟
陈逊杰
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Guangzhou University
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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
    • H01M4/523—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron for non-aqueous cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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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
    • 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
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • 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
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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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
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Abstract

The invention belongs to the technical field of energy storage, and discloses a nickel oxide composite material and a preparation method and application thereof. The nickel oxide composite material comprises spherical nickel oxide and rhenium disulfide growing on the surface of the nickel oxide. The rhenium disulfide can increase the contact area of the electrolyte and the material, and can relieve the expansion of the material in the operation process of the battery, so that the prepared nickel oxide composite material is used as the anode material of the sodium-ion battery, the multiplying power performance is excellent, and the battery can reach the high specific capacity of 600mAh/g under the current density of 0.1A/g. The preparation method provided by the invention comprises the steps of preparing carbon spheres, adsorbing nickel ions on the surfaces of the carbon spheres to form a carbon sphere structure with the surfaces covered with the nickel ions, calcining to obtain spherical NiO, and growing rhenium disulfide nano sheets on the surfaces of the NiO. The prepared nickel oxide composite material has a unique structure and controllable appearance; the preparation method is simple, easy to operate and high in yield.

Description

Nickel oxide composite material and preparation method and application thereof
Technical Field
The invention belongs to the technical field of energy storage, and particularly relates to a nickel oxide composite material and a preparation method and application thereof.
Background
In recent years, Lithium Ion Batteries (LIBs) have become an important energy source for a variety of portable electronic and electric transportation tools by virtue of their convenience, high energy density values, and high safety. However, long-term large-scale application leads to scarce lithium ion resources, which is not favorable for sustainable development. Sodium Ion Batteries (SIBs) are expected to be a promising lithium ion battery substitute due to their advantages of low cost, abundant resources, etc., and have recently received increasing attention from many scientists. It remains a challenging task to produce a high energy density and high cycling stability anode material to achieve high cell performance.
NiO has a higher theoretical capacity (718mAh/g), higher corrosion resistance and lower material processing cost, and is more attractive to scientists than other oxides. The conductivity rate of the electrode material affects the performance of the battery, and meanwhile, the material can expand in volume during the operation of the battery, and the stability of the reaction discharge of the material can be affected by the expansion in volume too much, so that the performance of the battery is affected. Since NiO has a low capacity retention or a poor charge transfer ability in the conversion reaction due to low conductivity and large volume change.
In order to improve the reversible capacity, the cycling stability and the rate performance of NiO, the NiO is optimized, for example, a carbonaceous material is used as a substrate, and the high conductivity of carbon is used for improving the performance of the battery; reducing the volume of the material to improve and increase electronic contact between iron oxide particles, and the like. However, the currently synthesized NiO composite structural material has complex synthesis steps and low output efficiency, still has volume expansion when used as a battery anode, and has poor rate capability and poor morphology controllability.
Therefore, it is highly desirable to provide a nickel oxide composite material as a battery anode material, which can reduce the volume expansion and effectively improve the rate performance of the battery.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the nickel oxide composite material provided by the invention has strong shape controllability, and can reduce volume expansion and effectively improve the rate capability of a battery when being used as a battery anode material.
The invention conception is as follows: the invention designs a nickel oxide composite material aiming at the defects and limitations of nickel oxide which is independently used as a battery anode material. And adsorbing nickel ions by using carbon spheres to prepare spherical nickel oxide, and then growing a rhenium disulfide nanosheet on the surface of the nickel oxide. The participation of carbon is utilized to increase the overall conductivity of the material; the rhenium disulfide nanosheet on the surface can increase the contact area between the electrolyte and the material, and can relieve the expansion phenomenon of the material in the operation process of the battery; the prepared nickel oxide composite material is used as a battery anode material, has excellent rate capability, and can improve the specific capacity and prolong the service life of the battery.
In a first aspect, the present invention provides a nickel oxide composite material.
Specifically, the nickel oxide composite material comprises spherical nickel oxide and rhenium disulfide grown on the surface of the nickel oxide.
Rhenium disulfide is a nanosheet with a unique crystal structure, the gaps among the crystals are large, large-particle metal ions such as Na + can be embedded and removed, the composite material grown on the surface of nickel oxide is unique in structure, controllable in shape and strong in stability, the contact area between electrolyte and the material can be increased, and the expansion phenomenon of the material in the operation process of the battery can be relieved.
Preferably, the size of the nickel oxide composite material is micro-nano.
Preferably, the mass ratio of the nickel oxide to the rhenium disulfide in the nickel oxide composite material is (20-40): (100-120).
The invention provides a preparation method of a nickel oxide composite material in a second aspect.
Specifically, the preparation method of the nickel oxide composite material comprises the following steps:
(1) mixing a carbon source and a surfactant, carrying out hydrothermal reaction, filtering to obtain a black solid, and baking to obtain carbon spheres;
(2) preparing a solution of soluble nickel salt, adding the carbon spheres prepared in the step (1), reacting, filtering to obtain a precipitate, standing the precipitate, and calcining to prepare spherical nickel oxide;
(3) and (3) mixing the nickel oxide prepared in the step (2) with a raw material for preparing rhenium disulfide, reacting, and filtering to obtain a precipitate, thereby preparing the nickel oxide composite material.
Preferably, in step (1), the carbon source is a saccharide; further preferably, the carbon source is glucose.
Preferably, in step (1), the surfactant is cetyltrimethylammonium bromide. Cetyl trimethyl ammonium bromide is beneficial to the formation of spherical morphology.
Preferably, in the step (1), the mass ratio of the carbon source to the surfactant is (10-20): 1; further preferably, the mass ratio of the carbon source to the surfactant is (12-18): 1; more preferably, the mass ratio of the carbon source to the surfactant is 15: 1. The proportion is beneficial to the formation of spherical morphology, so that the formed carbon spheres are more uniform and have more stable structure.
Preferably, in the step (1), the temperature of the hydrothermal reaction is 160-200 ℃, and the time of the hydrothermal reaction is 2-8 h; further preferably, in the step (1), the temperature of the hydrothermal reaction is 170-190 ℃, and the time of the hydrothermal reaction is 3-5 h.
Preferably, in the step (1), the baking temperature is 50-70 ℃, and the baking time is 8-15 h.
Preferably, in the step (2), the soluble nickel salt is selected from at least one of nickel acetate, nickel nitrate or nickel chloride.
Preferably, in the step (2), the solvent in the solution is a mixed solution of ethanol and water. The mixed solution of water and alcohol has high solubility, can fully dissolve soluble nickel salt and release free nickel ions, and is more favorable for the adsorption of carbon spheres during reaction.
Preferably, in the step (2), the reaction temperature is 35-50 ℃, and the reaction time is 8-15 h.
Preferably, in step (2), the standing time is 8-15 h.
Preferably, in the step (2), the calcination temperature is 400-600 ℃, the temperature rise rate of the calcination is 2-5 ℃/h, and the calcination time is 1-3 h. The calcination process oxidizes the adsorbed Ni ions to NiO and partially burns off the carbon sphere, leaving spherical NiO. Calcination can improve the crystallinity of NiO and the conductivity of NiO.
Preferably, in step (3), the raw materials for preparing rhenium disulfide are ammonium perrhenate, thiourea and hydroxylamine hydrochloride. Further preferably, the molar ratio of the ammonium perrhenate, the thiourea and the hydroxylamine hydrochloride is (1-3): (8-10): (4-6). By controlling the raw material for generating the rhenium disulfide and the dosage of the raw material, the formation of the rhenium disulfide on the surface of the nickel oxide can be better controlled, and the yield is improved.
Preferably, in the step (3), the temperature of the reaction is 220-260 ℃, and the time of the reaction is 15-30 h.
In a third aspect, the invention provides a use of a nickel oxide composite material.
In particular to application of the nickel oxide composite material in preparing a battery.
A battery anode material comprising the nickel oxide composite.
A sodium ion battery anode material comprising the nickel oxide composite material.
A lithium ion battery anode material comprises the nickel oxide composite material.
A battery comprises the nickel oxide composite material.
Compared with the prior art, the invention has the following beneficial effects:
(1) the nickel oxide composite material provided by the invention comprises spherical nickel oxide and rhenium disulfide growing on the surface of the nickel oxide, wherein the nickel oxide has high theoretical capacity, and the rhenium disulfide can increase the contact area between an electrolyte and the material and relieve the expansion of the material in the operation process of a battery. When the prepared nickel oxide composite material is used as an anode material of a sodium ion battery, the rate capability of the nickel oxide composite material is excellent, and the battery can reach high specific capacity of 600mAh/g under the current density of 0.1A/g.
(2) The preparation method provided by the invention comprises the steps of preparing carbon spheres, adsorbing nickel ions on the surfaces of the carbon spheres to form a carbon sphere structure with the surfaces covered with the nickel ions, calcining to obtain spherical NiO, and growing rhenium disulfide nano sheets on the surfaces of the NiO. The prepared nickel oxide composite material has a unique structure and controllable appearance; the preparation method is simple, easy to operate and high in yield.
Drawings
FIG. 1 is a process flow diagram for preparing a nickel oxide composite material according to example 1;
FIG. 2 is an SEM image of a nickel oxide composite material prepared in example 1;
FIG. 3 is a graph of the rate capability of the nickel oxide composite material prepared in example 1 as an anode material of a sodium ion battery;
FIG. 4 is pure ReS obtained in comparative example 22The material is used as a rate performance graph of the anode material of the sodium-ion battery.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
The starting materials, reagents or apparatuses used in the following examples are conventionally commercially available or can be obtained by conventionally known methods, unless otherwise specified.
Example 1
A preparation method of a nickel oxide composite material comprises the following steps (the process flow diagram is shown in figure 1):
1. synthesizing carbon spheres:
(1) weighing 6g of glucose, dissolving in 50mL of distilled water, and fully stirring until the glucose is fully dissolved;
(2) to the solution of step (1) was added 0.4g CTAB (cetyltrimethylammonium bromide) and stirring was continued until the solution was clear.
(3) And (3) pouring the mixed solution obtained in the step (2) into a 100mL reaction kettle, sealing tightly, and putting into a forced air oven to perform hydrothermal reaction, wherein the conditions of the oven are set at 180 ℃, and the reaction time is 4 hours.
(4) And (3) taking out the reaction kettle after the reaction is finished, wherein black foam is floated on the surface of the obtained mixed solution after the reaction, and the black foam is coke generated by the reaction of the glucose and the air in the reaction kettle. Sucking the mixed solution (not sucking the black foam on the surface) except the lower layer of the black foam by using a suction pipe, performing suction filtration on the sucked mixed solution to obtain a black solid, wherein the filter paper is water-based polymer filter paper, and washing the black solid twice by using distilled water and ethanol in the suction filtration process respectively.
(5) And (3) baking the solid obtained after suction filtration in a hollow oven at 60 ℃ for 12 hours to obtain carbon spheres with the particle size of about 500 nm.
2. And (3) synthesizing NiO:
(6) 50mL of 1mol/L nickel acetate solution was prepared, and the solvent was a mixture of ethanol and water (water: ethanol: 17: 33). The specific operation is as follows: 17mL of water and 33mL of ethanol were measured out from a measuring cylinder, and the measured solutions were mixed in a 100mL beaker. Then, 12.5g of nickel acetate solid was weighed and dissolved in a mixed solution of ethanol and water, and sufficiently stirred and dissolved.
(7) Weighing 1g of carbon spheres, adding the carbon spheres into the solution obtained in the step (6), and stirring the mixture in a water bath kettle at the temperature of 40 ℃ for 12 hours; during the stirring process, the negative ions (such as OH < - > and COO < - >) on the surface of the carbon sphere adsorb the nickel ions in the solution, so that the nickel ions are attached to the surface of the carbon sphere. Centrifuging the stirred mixed solution to obtain a precipitate, cleaning to obtain a solid, and placing the obtained solid in a vacuum oven at 60 ℃ for 12 hours.
(8) And (4) placing the solid obtained in the step (7) in a muffle furnace, and calcining the solid in air at the temperature of 500 ℃ for 2h at the heating rate of 3 ℃/h. The purpose of this operation was to burn off the carbon spheres, leaving a spherical NiO solid, and to oxidize the adsorbed Ni ions to NiO by calcination in air, yielding a spherical NiO solid. Meanwhile, the crystallinity of NiO can be improved by calcination, and the conductivity of NiO is improved.
3. Surface synthesis of ReS2：
(9) 30mg of the NiO solid prepared in step (8) was weighed, mixed with 0.4mmol of ammonium perrhenate, 2.1mmol of thiourea, and 1.03mmol of hydroxylamine hydrochloride, and then 40mL of deionized water was added. Sonicate in a sonicator for at least one hour, then stir for half an hour under a magnetic stirrer.
(10) The mixed solution treated in step (9) was charged into a 100mL reaction vessel and heated at 240 ℃ for 24 hours in a forced air oven.
(11) After the reaction in the step (10) is finished, taking out the mixed solution, centrifuging for many times, washing with water and ethanol solution to obtain precipitate, and drying the precipitate in a vacuum oven at 60 ℃ for 12 hours to obtain the nickel oxide composite material named NiO @ ReS2。
FIG. 2 is an SEM image of the nickel oxide composite material obtained in example 1, and when analyzing a in FIG. 2, it can be seen from the slightly broken NiO spheres that the flaky ReS2Uniformly growing on the surface of the NiO sphere; and it can be seen from b in FIG. 2 that most of NiO has complete structure and uniformly grows ReS on the surface2And the structure is stable.
Comparative example 1
Comparative example 1 differs from example 1 in that the surface of the nickel oxide material in the comparative example is free of ReS2。
The preparation method of the nickel oxide material comprises the following steps:
1. synthesizing carbon spheres:
(1) weighing 6g of glucose, dissolving in 50mL of distilled water, and fully stirring until the glucose is fully dissolved;
(2) to the solution of step (1) was added 0.4g CTAB (cetyltrimethylammonium bromide) and stirring was continued until the solution was clear.
(3) And (3) pouring the mixed solution obtained in the step (2) into a 100mL reaction kettle, sealing tightly, and putting into a forced air oven to perform hydrothermal reaction, wherein the conditions of the oven are set at 180 ℃, and the reaction time is 4 hours.
(4) And (3) taking out the reaction kettle after the reaction is finished, wherein black foam is floated on the surface of the obtained mixed solution after the reaction, and the black foam is coke generated by the reaction of the glucose and the air in the reaction kettle. Sucking the mixed solution (not sucking the black foam on the surface) except the lower layer of the black foam by using a suction pipe, performing suction filtration on the sucked mixed solution to obtain a black solid, wherein the filter paper is water-based polymer filter paper, and washing the black solid twice by using distilled water and ethanol in the suction filtration process respectively.
(5) And (3) baking the solid obtained after suction filtration in a hollow oven at 60 ℃ for 12 hours to obtain carbon spheres with the particle size of about 500 nm.
2. And (3) synthesizing NiO:
(6) 50mL of 1mol/L nickel acetate solution was prepared, and the solvent was a mixture of ethanol and water (water: ethanol: 17: 33). The specific operation is as follows: 17mL of water and 33mL of ethanol were measured out from a measuring cylinder, and the measured solutions were mixed in a 100mL beaker. Then, 12.5g of nickel acetate solid was weighed and dissolved in a mixed solution of ethanol and water, and sufficiently stirred and dissolved.
(7) Weighing 1g of carbon spheres, adding the carbon spheres into the solution obtained in the step (6), and stirring the mixture in a water bath kettle at the temperature of 40 ℃ for 12 hours; during the stirring process, the negative ions (such as OH < - > and COO < - >) on the surface of the carbon sphere adsorb the nickel ions in the solution, so that the nickel ions are attached to the surface of the carbon sphere. Centrifuging the stirred mixed solution to obtain a precipitate, cleaning to obtain a solid, and placing the obtained solid in a vacuum oven at 60 ℃ for 12 hours.
(8) And (4) placing the solid obtained in the step (7) in a muffle furnace, and calcining the solid in air at the temperature of 500 ℃ for 2h at the heating rate of 3 ℃/h. The purpose of this operation was to burn off part of the carbon spheres, leaving a spherical NiO solid, and to oxidize the adsorbed Ni ions into NiO by calcination in air, to give a spherical NiO solid.
Comparative example 2
This comparative example prepared a pure ReS2The material differs from example 1 in that this comparative example has no NiO and carbon doping, only pure ReS 2. Pure ReS2The specific preparation process of the material comprises the following steps:
(1) 0.4mmol ammonium perrhenate, 2.1mmol thiourea and 1.03mmol hydroxylamine hydrochloride were weighed and added to 40mL deionized water. And (4) carrying out ultrasonic treatment for at least one hour in an ultrasonic machine, and then stirring for half an hour under a magnetic stirrer to obtain a mixed solution.
(2) The mixed solution treated in the step (1) was charged into a 100mL reaction vessel and heated at 240 ℃ for 24 hours in a forced air oven.
(3) Taking out the mixed solution after the reaction in the step (2) is finished, centrifuging for many times, washing with water and ethanol solution to obtain precipitate, and drying the precipitate in a vacuum oven at 60 ℃ for 12 hours to obtain pure ReS2A material.
Product effectiveness testing
The copper foil is used as a sodium ion battery anode current collector, the nickel oxide composite material prepared in the embodiment 1 of the invention, acetylene black and sodium alginate are mixed according to the mass ratio of 7:2:1, and a proper amount of deionized water is dripped to be ground and stirred into slurry. And then uniformly coating the slurry on a copper foil, and heating for at least 12 hours in a vacuum oven at 80 ℃ for drying. The button cell was assembled in a glove box filled with argon gas, and the oxygen concentration and the water concentration in the glove box were controlled to be within 1 ppm. A 1M NaClO4(EC/DEC ═ 1:1) solution was used as electrolyte, glass fiber as coin cell separator, and sodium blocks were cut to size as reference electrodes. In order to maintain the stability of the battery performance, the voltage window is set to 0.01-3V for the charge and discharge test and the cyclic voltammetry test in the subsequent battery test. Charge-discharge and cycling tests were performed in a novice charge-discharge cabinet.
Through testing, the nickel oxide composite material (NiO @ ReS)2) As the anode material of the sodium ion battery, the rate capability is excellent. FIG. 3 is a graph of rate capability of the nickel oxide composite material prepared in example 1 as an anode material of a sodium ion battery. As can be seen from FIG. 3, when the charging and discharging cabinet is at a current density of 0.1A/g, the discharging specific capacity of the battery reaches 600 mAh/g; when the charging and discharging cabinet is under the current density of 0.1A/g,the specific discharge capacity of the battery reaches 500 mAh/g.
Similarly, when the nickel oxide material prepared in the comparative example 1 is used as the anode material of the sodium-ion battery and the test is carried out, the specific discharge capacity of the battery is 350mAh/g under the condition of the current density of 0.1A/g, which is obviously inferior to the nickel oxide composite material prepared in the example 1.
Pure ReS from comparative example 22Materials, tested as above, FIG. 4 shows pure ReS from comparative example 22The material is used as a multiplying power performance diagram of the anode material of the sodium-ion battery, and in the diagram of fig. 4, the abscissa is the number of cycles and the ordinate is the specific capacity. As can be seen from FIG. 4, the specific capacity of the battery was 380mAh/g under the current density condition of 0.1A/g. Pure ReS2When the material is used as a negative electrode material of a sodium-ion battery, the performance of the material is inferior to that of the material provided by the invention, and the addition of ReS is proved2NiO @ ReS of NiO formation of2The composite structure has excellent properties.

Claims (10)

1. A nickel oxide composite material is characterized by comprising spherical nickel oxide and rhenium disulfide growing on the surface of the nickel oxide.
2. The nickel oxide composite of claim 1, wherein the nickel oxide composite is micro-nanoscale in size.
3. The method for preparing a nickel oxide composite material according to claim 1 or 2, comprising the steps of:
(1) mixing a carbon source and a surfactant, carrying out hydrothermal reaction, filtering to obtain a solid, and baking to obtain carbon spheres;
(2) preparing a solution of soluble nickel salt, adding the carbon spheres prepared in the step (1), reacting, filtering to obtain a precipitate, standing the precipitate, and calcining to prepare spherical nickel oxide;
(3) and (3) mixing the nickel oxide prepared in the step (2) with a raw material for preparing rhenium disulfide, reacting, and filtering to obtain a precipitate, thereby preparing the nickel oxide composite material.
4. The production method according to claim 3, wherein the carbon source is a saccharide; the surfactant is cetyl trimethyl ammonium bromide.
5. The production method according to claim 4, wherein the mass ratio of the carbon source to the surfactant is (10-20): 1.
6. The preparation method according to claim 3, wherein in the step (2), the raw materials for preparing rhenium disulfide are ammonium perrhenate, thiourea and hydroxylamine hydrochloride; the calcining temperature is 400-600 ℃, the temperature rise rate of the calcining is 2-5 ℃/h, and the calcining time is 1-3 h.
7. The preparation method as claimed in claim 3, wherein in the step (3), the temperature of the reaction is 220-260 ℃ and the time of the reaction is 15-30 h.
8. Use of the nickel oxide composite material according to claim 1 or 2 for the preparation of a battery.
9. A battery anode material comprising the nickel oxide composite material of claim 1 or 2.
10. A battery comprising the nickel oxide composite material according to claim 1 or 2.
CN202110482060.1A 2021-04-30 2021-04-30 Nickel oxide composite material and preparation method and application thereof Pending CN113224301A (en)

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CN108993538A (en) * 2018-07-28 2018-12-14 天津大学 A kind of preparation method of rhenium disulfide nanometer sheet/titanium dioxide nanofiber composite photocatalyst material
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CN112018351A (en) * 2020-08-13 2020-12-01 五邑大学 Nano ReS2Mxene composite material and preparation method thereof

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