CN215161047U

CN215161047U - Preparation facilities of porous nanometer silicon for lithium electricity

Info

Publication number: CN215161047U
Application number: CN202121735174.4U
Authority: CN
Inventors: 王桢; 温广武; 张俊亭; 杨国威; 刘峰; 孙志远
Original assignee: Shandong Sina New Material Technology Co ltd
Current assignee: Shandong Sina New Material Technology Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-14
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a preparation facilities of porous nanometer silicon for lithium electricity relates to porous nanometer silicon field, including the supporting baseplate, the perpendicular upwards welding of top surface of supporting baseplate has the support pole setting, the top welding of supporting the pole setting has the blending tank body, the top surface bolted connection of the blending tank body has the stirring motor, the bottom surface of the blending tank body is provided with ejection of compact pipe chute to one side, the top surface welding of supporting baseplate has the processing tank body, the outside limit of the processing tank body is inlayed and is had control panel, the top surface of the processing tank body is pegged graft and is had feed liquor pipe one, the top surface of the processing tank body is pegged graft and is had the exhaust tube, the top surface of the processing tank body is pegged graft and is had feed liquor pipe two, the top surface bolted connection of supporting baseplate has the extraction pump. The utility model discloses the device design is through regulation and control, avoids the reaction too violent, saves process and energy consumption, and the nanometer silicon that makes has abundant pore structure, and the particle diameter is little, and is with low costs, and multiplying power performance and cyclicity can be high.

Description

Preparation facilities of porous nanometer silicon for lithium electricity

Technical Field

The utility model relates to a porous nanometer silicon technical field specifically is a preparation facilities of porous nanometer silicon for lithium electricity.

Background

Along with the continuous development and progress of electronic products and new energy automobiles, the requirements of people on lithium batteries are further improved. The theoretical capacity of the traditional commercial graphite lithium battery is only 372mAh/g, and the traditional commercial graphite lithium battery cannot meet the energy density and capacity required by modern electronic products. Therefore, there is a need for a new negative electrode material with high power density, large energy density and excellent cycle life to replace the graphite negative electrode. The silicon material theoretically has the specific capacity as high as 4200mAh/g, and is the most ideal lithium battery negative electrode material which is accepted at present. However, in the charge and discharge cycle process of the lithium battery, the lithium ions are embedded and released with higher internal stress, so that the volume of the silicon negative electrode is changed by more than 300%, the internal structure is damaged, and the cycle performance of the lithium battery is influenced. In addition to this, the complicated preparation cost is also a reason for hindering commercialization of silicon-based negative electrodes. Therefore, the search for cheap raw materials and simple process are of great significance to the development of the silicon-based cathode

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a preparation facilities of porous nanometer silicon for lithium electricity to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a preparation device of porous nano silicon for a lithium battery comprises a supporting bottom plate, wherein a supporting vertical rod is vertically welded upwards on the top surface of the supporting bottom plate, a mixing tank body is welded at the top end of the supporting vertical rod, a stirring motor is connected to the top surface of the mixing tank body through bolts, a discharge inclined tube is obliquely arranged on the bottom surface of the mixing tank body, a treatment tank body is welded on the top surface of the supporting bottom plate, a control panel is embedded on the outer side edge of the treatment tank body, a liquid inlet tube I is inserted into the top surface of the treatment tank body, an exhaust tube is inserted into the top surface of the treatment tank body, a liquid inlet tube II is inserted into the top surface of the treatment tank body, an extraction pump is connected to the top surface of the supporting bottom plate through bolts, a drying box is connected to one side edge of the top surface of the supporting bottom plate, which is far away from the supporting vertical rod, a discharge pump is embedded into the bottom surface of the mixing tank body, and a mixing stirring rod is vertically arranged on the inner side edge of the mixing tank body, the inboard side of the processing jar body is fixed and is provided with interior isolation layer, the inboard side of interior isolation layer is provided with the heating pipe, the inboard side horizontal welding of the processing jar body has the trunk line, the even welding in outside limit of trunk line has the sprinkler head, the inboard bottom surface of the processing jar body is fixed and is provided with the pick-up plate, the inboard side of drying cabinet is provided with the desiccator, one side of drying cabinet is opened to one side and is equipped with ejection of compact logical groove.

As a preferred embodiment of the present invention: the number of supporting the pole setting is many, and many supporting the pole setting parallel arrangement each other, and many supporting the fixed top surface that sets up at the supporting baseplate of pole setting are close to a side position, and many supporting the perpendicular upwards welding in the bottom surface of the blending tank body in top of pole setting are close to the border position.

As a preferred embodiment of the present invention: the output end of the stirring motor vertically penetrates through the top surface of the mixing tank body downwards and extends to the inside, the extending inner end is vertically welded at the top end position of the mixing stirring rod downwards, the inclined upper end of the discharging inclined tube is fixedly arranged at the output end position of the discharging pump, and the inclined lower end of the discharging inclined tube is fixedly inserted into the side hole of the treatment tank body.

As a preferred embodiment of the present invention: the processing tank body is horizontally arranged at the center of the top surface of the supporting bottom plate, the bottom end of the liquid inlet pipe I vertically penetrates through the outer side edge of the processing tank body downwards and extends to the inside, the inner end of the liquid inlet pipe I is vertically welded at one end of the top surface of the main pipeline downwards, the inside of the liquid inlet pipe I is communicated with the inside of the main pipeline, and the inside of the exhaust pipe is communicated with the inside of the processing tank body.

As a preferred embodiment of the present invention: the outside limit that the bottom of feed liquor pipe two runs through the treatment tank body perpendicularly downwards extends to inside, and extends the perpendicular welding of inside end downwards and keep away from the one end position of feed liquor pipe one at the top surface of trunk line, and the inside of feed liquor pipe two keeps to lead to and connects the setting with the inside of trunk line, and the input of extraction pump keeps to lead to through the pipeline and the inside of the treatment tank body and connects the setting, and the output keeps to lead to through the inside of pipeline and desiccator and connects the setting.

As a preferred embodiment of the present invention: the inside of trunk line keeps leading to the setting with the inside of sprinkler head, and the pick-up plate keeps electric connection with control panel's inside to set up, and the one end in ejection of compact logical groove keeps leading to the setting with the delivery outlet of desiccator.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses throw into the inside with certain quality's silicon oxide, magnesium powder and potassium chloride from the feed inlet of the blending tank body, make the rotation of mixing stirring rod under the rotation of agitator motor, let between the raw materials misce bene, control panel is controlling the discharge pump extraction raw materials and is getting into the processing tank body that is full of protective atmosphere from the ejection of compact pipe chute after misce bene, make the heating pipe heat up to 750 ℃ and keep warm 3h and react under control panel control, will carry out the continuous evacuation to the inside air of the top surface exhaust tube extraction of the processing tank body after the reaction, heat up to 800 ℃ and keep warm 5h at the heating pipe simultaneously, utilize certain concentration's hydrochloric acid and hydrofluoric acid to pour into the inside of mixed liquid from feed liquor pipe one after the cooling, carry out the pickling from the sprinkler head to the raw materials again, then a large amount of deionized water enters into the inside of trunk line from feed liquor pipe two and carries out the washing to the raw materials, detect the raw materials at the pick-up plate, make the raw materials enter into the inside of desiccator and carry out vacuum drying under the extraction of draw-out pump after detecting pH 7, finally obtain porous nano silicon material and lead to the groove discharge from the ejection of compact and collect the processing, the device design is through regulation and control, avoids the reaction too violent, saves process and energy consumption, and the nano silicon who makes has abundant pore structure, and the particle diameter is little, and is with low costs, and multiplying power performance and cyclicity can be high.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic perspective view of an apparatus for preparing porous nano-silicon for a lithium battery;

FIG. 2 is a schematic structural diagram of a connection detail of a front view section of a mixing tank of the preparation device of porous nano-silicon for a lithium battery;

FIG. 3 is a schematic structural diagram of a connection detail of a processing tank body in a front view and a section of a preparation device of porous nano-silicon for a lithium battery;

fig. 4 is a schematic structural diagram of a connection detail of a front section of a drying oven of the preparation device of porous nano-silicon for a lithium battery.

In the figure: 1. a support base plate; 2. supporting the upright stanchion; 3. a mixing tank body; 4. a stirring motor; 5. a discharge inclined tube; 6. treating the tank body; 7. a control panel; 8. a liquid inlet pipe I; 9. an air exhaust pipe; 10. a liquid inlet pipe II; 11. a pump; 12. a drying oven; 13. a discharge pump; 14. mixing and stirring rods; 15. an inner barrier layer; 16. heating a tube; 17. a main pipeline; 18. a sprinkler head; 19. detecting a plate; 20. a dryer; 21. and a discharge through groove.

Detailed Description

Referring to fig. 1, in an embodiment of the present invention, a device for preparing porous nano silicon for lithium battery includes a supporting base plate 1, a supporting upright rod 2 is welded on a top surface of the supporting base plate 1 vertically upward, a mixing tank 3 is welded on a top end of the supporting upright rod 2, the number of the supporting upright rods 2 is multiple, and the multiple supporting upright rods 2 are arranged in parallel with each other, the multiple supporting upright rods 2 are fixedly arranged on a top surface of the supporting base plate 1 near a side edge position, top ends of the multiple supporting upright rods 2 are vertically upward welded on a bottom surface of the mixing tank 3 near an edge position, a top surface of the mixing tank 3 is bolted with a stirring motor 4, a discharging inclined tube 5 is obliquely arranged on a bottom surface of the mixing tank 3, an output end of the stirring motor 4 vertically penetrates through the top surface of the mixing tank 3 downward and extends into the interior, and an extending interior end is vertically downward welded on a top end of a mixing stirring rod 14, the oblique upper end of the discharge inclined pipe 5 is fixedly arranged at the output end position of the discharge pump 13, the oblique lower end of the discharge inclined pipe 5 is fixedly inserted inside a side hole of the processing tank body 6, the top surface of the supporting base plate 1 is welded with the processing tank body 6, the outer side edge of the processing tank body 6 is embedded with the control panel 7, the top surface of the processing tank body 6 is inserted with the liquid inlet pipe I8, the top surface of the processing tank body 6 is inserted with the air exhaust pipe 9, the processing tank body 6 is horizontally arranged at the central position of the top surface of the supporting base plate 1, the bottom end of the liquid inlet pipe I8 vertically penetrates through the outer side edge of the processing tank body 6 downwards to extend into the interior, the extending interior end is vertically welded downwards at one end position of the top surface of the main pipeline 17, the interior of the liquid inlet pipe I8 is communicated with the interior of the main pipeline 17, the interior of the air exhaust pipe 9 is communicated with the interior of the processing tank body 6, the top surface of the processing tank body 6 is inserted with the liquid inlet pipe II 10, the top surface of the supporting bottom plate 1 is connected with an extraction pump 11 through bolts, the bottom end of the liquid inlet pipe II 10 vertically penetrates through the outer side edge of the treatment tank body 6 downwards and extends to the inside, the extending inner end is vertically welded at one end position, far away from the liquid inlet pipe I8, of the top surface of the main pipeline 17 downwards, the inside of the liquid inlet pipe II 10 is communicated with the inside of the main pipeline 17, the input end of the extraction pump 11 is communicated with the inside of the treatment tank body 6 through a pipeline, the output end of the extraction pump is communicated with the inside of the dryer 20 through a pipeline, and one side edge, far away from the supporting vertical rod 2, of the top surface of the supporting bottom plate 1 is connected with a drying box 12 through bolts;

referring to fig. 2-4, in an embodiment of the present invention, an apparatus for preparing porous nano-silicon for lithium battery, the bottom surface of the mixing tank body 3 is embedded with a discharge pump 13, the inner side edge of the mixing tank body 3 is vertically provided with a mixing stirring rod 14, the inner side edge of the treatment tank body 6 is fixedly provided with an inner isolation layer 15, the inner side edge of the inner isolation layer 15 is provided with a heating pipe 16, the inner side edge of the treatment tank body 6 is horizontally welded with a main pipeline 17, the outer side edge of the main pipeline 17 is uniformly welded with a sprinkler 18, the inner side bottom surface of the treatment tank body 6 is fixedly provided with a detection plate 19, the inner side edge of the drying box 12 is provided with a drying machine 20, one side edge of the drying box 12 is obliquely provided with a discharge through groove 21, the inside of the main pipeline 17 and the inside of the sprinkler 18 are kept in a communicating and connecting mode, the detection plate 19 and the inside of the control panel 7 are kept in an electric connection mode, and one end of the discharge through groove 21 and the output port of the drying machine 20 are kept in a communicating and connecting mode.

The components are standard parts in general or known to those skilled in the art, and their structure and principle are known to those skilled in the art through technical manuals or through routine experimentation.

The utility model discloses a theory of operation is:

silicon oxide, magnesium powder and potassium chloride with certain mass are put into the mixing tank body 3 from a feed inlet, a mixing stirring rod 14 is rotated under the rotation of a stirring motor 4, the raw materials are uniformly mixed, a control panel 7 controls a discharge pump 13 to pump the raw materials to enter a processing tank body 6 filled with protective atmosphere from a discharge inclined tube 5 after uniform mixing, a heating pipe 16 is heated to 750 ℃ under the control of the control panel 7 to carry out heat preservation for 3 hours for reaction, air inside a top surface exhaust tube 9 of the processing tank body 6 is pumped to be continuously vacuumized after the reaction is finished, meanwhile, the heating pipe 16 is heated to 800 ℃ to carry out heat preservation for 5 hours, a product is injected into the main pipeline 17 from a first liquid inlet pipe 8 by using a mixed liquid of hydrochloric acid and hydrofluoric acid with certain concentration after temperature reduction, then the raw materials are pickled from a spray head 18, then a large amount of deionized water enters the main pipeline 17 from a second liquid inlet pipe 10 to carry out water washing on the raw materials, the raw material is detected by the detection plate 19, after the pH value is 7, the raw material is pumped by the extraction pump 11 to enter the dryer 20 for vacuum drying, and finally the obtained porous nano silicon material is discharged from the discharge through groove 21 and collected.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The preparation device of the porous nano silicon for the lithium battery comprises a supporting bottom plate (1) and is characterized in that a supporting upright rod (2) is vertically welded upwards on the top surface of the supporting bottom plate (1), a mixing tank body (3) is welded on the top end of the supporting upright rod (2), a stirring motor (4) is connected with the top surface of the mixing tank body (3) through bolts, a discharge inclined pipe (5) is obliquely arranged on the bottom surface of the mixing tank body (3), a treatment tank body (6) is welded on the top surface of the supporting bottom plate (1), a control panel (7) is embedded on the outer side edge of the treatment tank body (6), a liquid inlet pipe I (8) is inserted on the top surface of the treatment tank body (6), an exhaust pipe (9) is inserted on the top surface of the treatment tank body (6), a liquid inlet pipe II (10) is inserted on the top surface of the treating tank body (6), and an extraction pump (11) is connected with the top surface of the supporting bottom plate (1) through bolts, a drying box (12) is connected with the top surface of the supporting bottom plate (1) through bolts at one side far away from the supporting upright stanchion (2), a discharge pump (13) is embedded in the bottom surface of the mixing tank body (3), a mixing stirring rod (14) is vertically arranged on the inner side edge of the mixing tank body (3), an inner isolation layer (15) is fixedly arranged on the inner side edge of the treatment tank body (6), a heating pipe (16) is arranged on the inner side edge of the inner isolation layer (15), a main pipeline (17) is horizontally welded at the inner side edge of the treatment tank body (6), the outer side edge of the main pipeline (17) is uniformly welded with a sprinkler head (18), the inner bottom surface of the processing tank body (6) is fixedly provided with a detection plate (19), the inner side edge of the drying box (12) is provided with a dryer (20), and one side edge of the drying box (12) is obliquely provided with a discharging through groove (21).

2. The device for preparing porous nano-silicon for the lithium battery according to claim 1, wherein the number of the supporting vertical rods (2) is multiple, the multiple supporting vertical rods (2) are arranged in parallel, the multiple supporting vertical rods (2) are fixedly arranged on the top surface of the supporting bottom plate (1) and close to one side edge, and the top ends of the multiple supporting vertical rods (2) are vertically upwards welded on the bottom surface of the mixing tank body (3) and close to the edge.

3. The device for preparing porous nano-silicon for the lithium battery according to claim 1, wherein an output end of the stirring motor (4) vertically penetrates through the top surface of the mixing tank (3) downwards to extend into the mixing tank, an extending inner end of the stirring motor is vertically welded at the top end of the mixing stirring rod (14) downwards, an inclined upper end of the discharging inclined tube (5) is fixedly arranged at an output end of the discharging pump (13), and an inclined lower end of the discharging inclined tube (5) is fixedly inserted into a side hole of the processing tank (6).

4. The device for preparing porous nano-silicon for the lithium battery according to claim 1, wherein the treatment tank body (6) is horizontally arranged at the center of the top surface of the support base plate (1), the bottom end of the first liquid inlet pipe (8) vertically penetrates through the outer side edge of the treatment tank body (6) downwards to extend into the treatment tank body, the extending inner end of the first liquid inlet pipe (8) vertically penetrates through the outer side edge of the treatment tank body to extend downwards and is welded at one end of the top surface of the main pipeline (17) downwards, the inner part of the first liquid inlet pipe (8) is communicated with the inner part of the main pipeline (17), and the inner part of the air exhaust pipe (9) is communicated with the inner part of the treatment tank body (6).

5. The device for preparing porous nano-silicon for the lithium battery according to claim 1, wherein the bottom end of the second liquid inlet pipe (10) vertically penetrates through the outer side edge of the processing tank body (6) downwards to extend to the inside, the extending inner end is vertically welded downwards at one end of the top surface of the main pipeline (17) far away from the first liquid inlet pipe (8), the inside of the second liquid inlet pipe (10) and the inside of the main pipeline (17) are kept in a communicating and connecting mode, the input end of the extraction pump (11) and the inside of the processing tank body (6) are kept in a communicating and connecting mode through a pipeline, and the output end of the extraction pump and the inside of the dryer (20) are kept in a communicating and connecting mode through a pipeline.

6. The device for preparing porous nano-silicon for the lithium battery as claimed in claim 1, wherein the interior of the main pipeline (17) is in communication with the interior of the spray head (18), the detection plate (19) is in electrical connection with the interior of the control panel (7), and one end of the discharge through groove (21) is in communication with the output port of the dryer (20).