CN214570758U - Nickel cobalt selenide material, preparation device, electrode and NiCo-Zn alkaline battery - Google Patents
Nickel cobalt selenide material, preparation device, electrode and NiCo-Zn alkaline battery Download PDFInfo
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- CN214570758U CN214570758U CN202120589268.9U CN202120589268U CN214570758U CN 214570758 U CN214570758 U CN 214570758U CN 202120589268 U CN202120589268 U CN 202120589268U CN 214570758 U CN214570758 U CN 214570758U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model belongs to the technical field of batteries, and discloses a nickel cobalt selenide material, a preparation device, an electrode and a NiCo-Zn alkaline battery, wherein the preparation device comprises a solution preparation device, a hydrothermal reaction device, a suction filtration device, a drying device and a selenylation reaction device; the solution preparation device is provided with a magnetic stirrer; the hydrothermal reaction device is provided with a stainless steel reaction kettle. The NiCo-Zn alkaline battery comprises a battery anode packaging cover, and a nickel-cobalt selenide material electrode is covered on the battery anode packaging cover. The nickel-cobalt selenide material electrode is sequentially covered with a diaphragm, a zinc electrode, a gasket, an elastic sheet and a battery cathode packaging cover. In the electrode preparation of the utility model, the experiment is carried out on the proportion of the nickel-cobalt compound, and the optimal performance proportion is obtained; the active material and the adhesive are placed on a foamed nickel current collector in a tabletting mode and prepared into an electrode for testing, so that the effect of improving the electrochemical performance of the device is achieved.
Description
Technical Field
The utility model belongs to the technical field of the battery, especially, relate to a nickel cobalt selenide material, preparation facilities, electrode, NiCo-Zn alkaline battery.
Background
Currently, as the world population continues to grow and green energy issues are raised, people pay more attention to developing higher performance energy storage devices. As batteries have high energy density and the demand of secondary batteries is increasing, lithium ion batteries widely used as secondary batteries have some problems to be solved: the shortage of lithium resources, lithium as a negative electrode material is easy to form lithium dendrite to cause short circuit, and the organic electrolyte has certain potential safety hazard. Therefore, it is urgent to find a novel secondary battery to replace the conventional lithium ion battery. Compared with lithium materials, the zinc materials with high heat have rich resource reserves and lower cost, and the water system zinc ion battery eliminates the possible fire hazard, explosion and other dangers caused by organic electrolyte.
With the continuous research and development of zinc ion batteries, a proper positive electrode material becomes a key factor for improving the comprehensive performance of the zinc ion battery. The nickel-cobalt system is widely applied to an energy storage system due to unique performance, and shows excellent electrochemical performance. Since element O, S and Se belong to the same main group, their nickel/cobalt compounds should have similar electrochemical properties, but in view of the synergistic effect between nickel and cobalt, the compounds provide electrochemical performance superior to that of the corresponding single metal oxides and sulfides. Compared with graphene serving as the positive electrode, the nickel-cobalt selenide nanostructure electrode not only can provide more active centers, but also has larger specific surface area and good conductivity, and can provide rich redox reactions and higher electrochemical performance than a single catalyst.
The widespread use of secondary battery lithium batteries has solved a portion of the world population growth and green energy problems. Lithium batteries are exposed in increasingly further developments, such as: the shortage of lithium resources, lithium as a cathode material is easy to form lithium dendrite to cause short circuit, and the organic electrolyte has certain potential safety hazard and the like, so that the zinc ion battery is rapidly developed. Compared with a lithium material, the zinc material has rich resource reserve and lower cost, and the water system zinc ion battery eliminates the possible fire hazard, explosion and other dangers caused by organic electrolyte. Zinc-nickel batteries are now being put into use in technologies such as digital cameras.
The prior art has the defects that: the positive electrode material of the zinc ion battery has the problems of low capacity, poor stability of a positive electrode structure and the like.
Furthermore, in the research of alkaline zinc batteries using nickel-cobalt selenide as a positive electrode material, the element ratio of Ni and Co has a profound influence on the performance of alkaline NiCo-Zn batteries. The zinc ion battery prepared by excellent Ni and Co ratio has the advantages of long cycle life, high specific capacity and low cost, and solves the problems of limited lithium resource reserve and high cost of the existing lithium ion battery and the problems of low capacity, poor stability of the anode structure and the like of the existing zinc ion battery anode active material.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) the nickel cobalt selenide zinc ion battery has the problems of poor stability and low capacity caused by different nickel cobalt ratios.
(2) The alkaline zinc battery has lower internal resistance, so the generated current is larger than that of the common carbon battery, and the battery does not contain mercury, so the battery can be treated with household garbage and does not need to be recycled intentionally. Although the alkaline battery has more advantages, the alkaline electrolyte has a more serious corrosion effect on the battery pole piece.
(3) The standard zinc ion battery is very active due to the chemical nature of the zinc used, so the safe use of the zinc ion battery requires attention.
The difficulty in solving the above problems and defects is:
and a proper nickel-cobalt ratio is searched, so that the stability and the capacity are improved.
The significance of solving the problems and the defects is as follows: the zinc ion battery is more environment-friendly, and can even surpass a lithium battery in performance, thereby being widely applied.
The utility model provides a suitable cathode material structure. The nickel-cobalt system is widely applied to an energy storage system due to unique performance, and can embody excellent electrochemical performance. Since element O, S and Se belong to the same main group, their nickel/cobalt compounds should have similar electrochemical properties, but in view of the synergistic effect between nickel and cobalt, the compounds provide electrochemical performance superior to that of the corresponding single metal oxides and sulfides. Compared with graphene serving as the positive electrode, the nickel-cobalt selenide nanostructure electrode not only can provide more active centers, but also has larger specific surface area and good conductivity, and can provide rich redox reactions and higher electrochemical performance than a single catalyst.
SUMMERY OF THE UTILITY MODEL
To the problems existing in the prior art, the utility model provides a nickel cobalt selenide material, a preparation device, an electrode and a NiCo-Zn alkaline battery.
The utility model discloses a realize like this, a preparation facilities of nickel cobalt selenide material, the preparation facilities of nickel cobalt selenide material is provided with:
the device comprises a solution preparation device, a hydrothermal reaction device, a suction filtration device, a drying device and a selenization reaction device;
the solution preparation device is provided with a magnetic stirrer;
the hydrothermal reaction device is provided with a stainless steel reaction kettle.
Another object of the present invention is to provide a nickel cobalt selenide material prepared by the apparatus for preparing nickel cobalt selenide material.
Another object of the present invention is to provide a nickel cobalt selenide material electrode packaged by the nickel cobalt selenide material.
Another object of the present invention is to provide a NiCo-Zn alkaline battery, comprising a battery anode encapsulating cover, wherein the battery anode encapsulating cover is covered with nickel-cobalt selenide material electrodes.
The nickel-cobalt selenide material electrode is sequentially covered with a diaphragm, a zinc electrode, a gasket, an elastic sheet and a battery cathode packaging cover; and (5) using the electrolyte to fully soak the gap, covering the battery cathode, and completing packaging.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:
in the electrode preparation of the utility model, the experiment is carried out on the proportion of the nickel-cobalt compound, and the optimal performance proportion is obtained; the active material and the adhesive are placed on a foamed nickel current collector in a tabletting mode and prepared into an electrode for testing, so that the effect of improving the electrochemical performance of the device is achieved.
The zinc ion battery with good proportion has the advantages of long cycle life, high specific capacity and low cost, and the problems of limited lithium resource reserve and high cost of the existing lithium ion battery are solved. The alkaline electrolyte is safer and more environment-friendly. The button cell packaging form is simple and easy to operate, low in cost and high in efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an NiCo-Zn alkaline battery provided by an embodiment of the present invention.
In the figure: 1. a battery positive electrode encapsulation cover; 2. a nickel cobalt selenide material electrode; 3. a diaphragm; 4. a zinc electrode; 5. a gasket; 6. a spring plate; 7. and a battery negative electrode packaging cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In view of the problems of the prior art, the present invention provides a NiCo-Zn alkaline battery and a device for manufacturing the same, which are described in detail below with reference to the accompanying drawings.
The utility model provides a preparation facilities of nickel cobalt selenide material, the preparation facilities of nickel cobalt selenide material is provided with:
the device comprises a solution preparation device, a hydrothermal reaction device, a suction filtration device, a drying device and a selenization reaction device;
the solution preparation device is provided with a magnetic stirrer;
the hydrothermal reaction device is provided with a stainless steel reaction kettle.
In an embodiment of the present invention, there is provided a nickel cobalt selenide material manufactured by the manufacturing apparatus for a nickel cobalt selenide material.
In an embodiment of the present invention, a nickel cobalt selenide material electrode 2 encapsulated by the nickel cobalt selenide material is provided.
As shown in fig. 1, in one embodiment of the present invention, the present invention provides a NiCo-Zn alkaline battery, which comprises a battery anode encapsulating cover 1, wherein the battery anode encapsulating cover is covered with a nickel-cobalt selenide material electrode 2.
The nickel cobalt selenide material electrode 2 is sequentially covered with a diaphragm 3, a zinc electrode 3, a gasket 5, an elastic sheet 6 and a battery cathode packaging cover 7; and (5) using the electrolyte to fully soak the gap, covering the battery cathode, and completing packaging.
The utility model discloses a theory of operation is:
the utility model has the following oxidation-reduction reactions:
NiCo-Se+2H2O+2O2→Ni(OH)2+Co(OH)2+Se；
Se+4OH-→2Se2-+2H2O+O2；
the utility model provides an in NiCo-Zn alkaline battery's nickel cobalt selenide material electrode 2 preparation, with cobalt chloride, urea, ammonium fluoride as raw and other materials, at first configure raw and other materials into solution, secondly carry out hydrothermal reaction, suction filtration, drying, selenization reaction and aftertreatment technology to form nickel cobalt selenide and in order to regard as electrode material, the method specifically contains following step:
(1) solution preparation: weighing 10mmol of cobalt chloride, 10mmol of urea and 10mmol of ammonium fluoride at room temperature, dissolving in 60ml of deionized water, stirring with a magnetic stirrer at room temperature, and filling the mixed solution into a polytetrafluoroethylene lining;
(2) hydrothermal reaction: and (2) at room temperature, putting the polytetrafluoroethylene lining obtained in the step (1) into a stainless steel reaction kettle lined with teflon, and then putting the stainless steel reaction kettle into a drying box for hydrothermal reaction. Wherein the temperature of the drying oven is set to be 140-220 ℃, and the reaction time is set to be 1-35 hours;
(3) and (3) suction filtration: at room temperature, after the reaction in the step (2) is completed, taking out the polytetrafluoroethylene lining from the stainless steel reaction kettle, pouring the solution into a suction filtration device for suction filtration, and collecting a large amount of basic cobalt carbonate powder by using filter paper;
(4) and (3) drying: at room temperature, putting the basic cobalt carbonate powder collected in the step (3) into a drying box for drying;
(5) ion exchange: respectively taking six parts of 100mg of basic cobalt carbonate powder collected in the step (3), respectively adding 0mmol, 2mmol, 4mmol, 8mmol and 10mmol of nickel chloride, dissolving in 60ml of deionized water, and stirring by using a magnetic stirrer at normal temperature;
(6) hydrothermal reaction: and (3) at room temperature, putting the polytetrafluoroethylene lining obtained in the step (5) into a stainless steel reaction kettle lined with teflon, and then putting the stainless steel reaction kettle into a drying box for hydrothermal reaction. Wherein the temperature of the drying oven is set to be 180 ℃, and the reaction time is set to be 10 hours;
(7) and (3) suction filtration: at room temperature, after the reaction in the step (6) is completed, taking out the polytetrafluoroethylene lining from the stainless steel reaction kettle, pouring the solution into a suction filtration device, carrying out suction filtration, and collecting basic nickel cobalt carbonate powder by using filter paper;
(8) and (3) drying: at room temperature, putting the basic nickel cobalt carbonate powder collected in the step (7) into a drying box for drying;
(9) selenylation reaction: mixing the powders collected in the step (8) in six different proportions according to the following samples: the mass ratio of the selenium powder is 1: 3, carrying out selenization reaction in a tube furnace. The temperature of the tubular furnace is preset to be 30 ℃ and is increased to 400 ℃ at the heating rate of 2 ℃/min. And (3) preserving the heat of the material obtained by the selenization reaction for 2 hours under the condition of argon or nitrogen at the temperature of 400 ℃ to obtain the nickel-cobalt selenide composite material.
(10) And (3) post-treatment: collecting the dried powder in the step (9) at room temperature.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.
Claims (5)
1. A device for preparing a nickel cobalt selenide material, characterized in that the device for preparing a nickel cobalt selenide material is provided with:
the device comprises a solution preparation device, a hydrothermal reaction device, a suction filtration device, a drying device and a selenization reaction device;
the solution preparation device is provided with a magnetic stirrer;
the hydrothermal reaction device is provided with a stainless steel reaction kettle.
2. A nickel cobalt selenide material manufactured by the apparatus for manufacturing a nickel cobalt selenide material according to claim 1.
3. A nickel cobalt selenide material electrode encapsulated with the nickel cobalt selenide material of claim 2.
4. A NiCo-Zn alkaline battery comprises a battery anode encapsulating cover, and is characterized in that a nickel-cobalt selenide material electrode covers the battery anode encapsulating cover.
5. The NiCo-Zn alkaline battery of claim 4, wherein the nickel cobalt selenide material electrode is covered with a separator, a zinc electrode, a gasket, a spring, and a battery negative encapsulation cover in that order.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120589268.9U CN214570758U (en) | 2021-03-23 | 2021-03-23 | Nickel cobalt selenide material, preparation device, electrode and NiCo-Zn alkaline battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120589268.9U CN214570758U (en) | 2021-03-23 | 2021-03-23 | Nickel cobalt selenide material, preparation device, electrode and NiCo-Zn alkaline battery |
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| CN214570758U true CN214570758U (en) | 2021-11-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420469A (en) * | 2022-02-09 | 2022-04-29 | 陕西科技大学 | 3D flower-shaped nickel zinc selenide flexible composite electrode material and preparation method and application thereof |
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2021
- 2021-03-23 CN CN202120589268.9U patent/CN214570758U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420469A (en) * | 2022-02-09 | 2022-04-29 | 陕西科技大学 | 3D flower-shaped nickel zinc selenide flexible composite electrode material and preparation method and application thereof |
| CN114420469B (en) * | 2022-02-09 | 2024-04-05 | 陕西科技大学 | 3D flower-shaped nickel zinc selenide flexible composite electrode material and preparation method and application thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |