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CN113433461B - Silicon air battery test system - Google Patents

Silicon air battery test system Download PDF

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Publication number
CN113433461B
CN113433461B CN202110700526.0A CN202110700526A CN113433461B CN 113433461 B CN113433461 B CN 113433461B CN 202110700526 A CN202110700526 A CN 202110700526A CN 113433461 B CN113433461 B CN 113433461B
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China
Prior art keywords
silicon
battery
air
tank body
negative electrode
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CN202110700526.0A
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Chinese (zh)
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CN113433461A (en
Inventor
于洁
马文会
李东鑫
李绍元
吕国强
万小涵
魏奎先
谢克强
陈正杰
秦博
刘战伟
颜恒维
雷云
伍继君
吴丹丹
任永生
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Priority to CN202110700526.0A priority Critical patent/CN113433461B/en
Publication of CN113433461A publication Critical patent/CN113433461A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/378Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/364Battery terminal connectors with integrated measuring arrangements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Hybrid Cells (AREA)

Abstract

The invention discloses a high-capacity silicon-air battery and a discharge test system, and belongs to the technical field of batteries. The silicon-air battery monomer test system comprises an air cathode mounting plate, an air cathode, a battery tank body, a screw, a silicon cathode window and a silicon cathode, wherein the cathode mounting plate, the air cathode, a gasket and the battery tank body are serially arranged together from front to back and are fixedly connected by the screw, the gasket between the air cathode and the battery tank body is used for preventing electrolyte leakage, a large-capacity electrolyte can be filled in the battery tank body, the design is carried out according to the special requirements of a silicon air battery on the working environment, a reasonable model is formed, a silicon wafer of the battery cathode and the electrolyte are replaced very conveniently and rapidly, the overall performance, the reliability and the easy assembly of the battery are greatly improved, and meanwhile, the process is simplified and the cost is reduced.

Description

Silicon air battery test system
Technical Field
The invention relates to the technical field of air batteries, in particular to a silicon air battery testing system.
Technical Field
The silicon-air battery is a novel electrochemical energy storage device, takes silicon as a negative electrode, takes alkaline solution or greenhouse ionic liquid as electrolyte, takes an air electrode as a positive electrode to form a battery system, has extremely high specific energy, and the calculated specific energy of the battery according to products is as high as 8470Wh/kg, which is far higher than that of the more mature lithium ion battery studied at present. Silicon resources are rich, and are the second most abundant elements in the crust.
Compared with the traditional battery, the silicon-air battery has an open structure, and because the active material of the cathode can be directly obtained from the surrounding air and is not stored in the battery, the silicon-air battery has high energy density, and the air is used as power for discharging, thereby not only improving the specific energy of the battery, but also reducing the cost and the volume. Silicon air batteries have a good development prospect in the aspects of electronic equipment, industrial equipment, electric automobiles and the like.
The common metal air battery testing device in the market at present mainly aims at a zinc air battery, an aluminum air battery, a magnesium air battery, a lithium air battery and the like, and the testing device does not aim at a silicon air battery, compared with a zinc sheet, an aluminum sheet, an iron sheet and other metal cathodes, a silicon wafer is fragile and fragile, and a silicon and alkali liquor reaction product is difficult to decompose, and the reaction product is attached to the surface of the cathode to stop discharging, so that the silicon air battery testing system is required to be provided with electrolyte with large capacity.
Since the silicon air cell positive electrode active material is oxygen in the air, it is determined that this type of cell must operate in an open configuration. This presents great difficulties in the overall packaging and use of the cell, and it is a serious challenge to seal the electrolyte against corrosion, to allow oxygen in the air to fully enter the cell to participate in the reaction, and to ensure that the silicon negative electrode does not rupture before the discharge ceases. In order to solve the problem, the novel structure is disclosed, and a more reasonable scheme is designed for the installation and the use of the silicon air battery.
Disclosure of Invention
The invention aims to solve the technical problems in the background art and provides a detachable silicon-air battery testing system.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a high-capacity silicon air battery test system, includes air cathode mounting panel, air cathode, the battery cell body that sets gradually, air cathode mounting panel, air cathode, the battery cell body pass through the mounting screw connection, its characterized in that is equipped with the silicon negative pole window on the battery cell body, peg graft in the silicon negative pole window has the silicon negative pole, be provided with the sealing member on the butt joint face of air cathode and the battery cell body.
Further, a plurality of fixed screw holes for installation are formed in the silicon anode window, the fixed screw holes are fixedly connected with the fixing screws, a plurality of threaded holes for installation are formed in the battery tank body, and the threaded holes are fixedly connected with the fixing screws.
Further, a plurality of installing threaded holes for installation are respectively formed in the left sides of the air cathode installing plate and the battery groove body, and the air cathode installing plate and the battery groove body are fixedly connected through installing screws.
Further, the battery tank body is provided with a liquid injection port, the liquid injection port is a threaded hole, and the liquid injection port is in threaded connection with the plug.
Further, the air cathode mounting plate, the battery tank body and the silicon cathode window are transparent organic glass plates.
Further, a gasket is arranged at the contact part of the air cathode and the battery tank body.
Further, the silicon negative electrode is inserted into the silicon negative electrode window, and two sides of the silicon negative electrode window are fixedly connected with the upper side of the battery tank body through fixing screws.
Further, the silicon anode further comprises: the adhesive layer is a titanium adhesive layer; the current collector is a gold film.
Further, a high capacity silicon air battery test system assembly process is as follows:
① Cutting the air cathode according to the length of 2 x 2.5cm, leading out a nickel tab at the air cathode current collector as a positive electrode tab, sequentially paving a gasket and the air cathode on the side of the battery groove body with the threaded holes in alignment, ensuring the alignment of the center of the air cathode and the center of a cathode opening, and fixedly connecting the paved air cathode mounting plate with the gasket and the six mounting threaded holes of the battery groove body through mounting screws after aligning the paved air cathode mounting plate with the six mounting threaded holes of the gasket and the battery groove body, wherein the tail parts of the mounting screws are fixed through nuts;
② Cutting a silicon wafer according to 1 x 1.5cm, evaporating a gold film containing a titanium adhesion layer on the silicon wafer, leading out a nickel tab at a current collector to serve as a negative electrode tab, inserting a silicon negative electrode into a silicon negative electrode fixing groove formed in the top of a silicon negative electrode window, inserting the silicon negative electrode window into a battery groove body, and fixing the silicon negative electrode window through a fixing screw;
③ Electrolyte is injected into the battery tank body through the liquid injection port until the battery tank body is filled with the electrolyte, and liquid injection is stopped.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the invention, the sealing piece is arranged on the butt joint surface of the air cathode mounting plate and the battery tank body, and the centers of the air cathode mounting plate, the battery tank body and the sealing piece are positioned on the same horizontal line, so that the sealing effect can be further improved, the electrolyte is sealed in the battery tank body very well, the use of the sealing gasket avoids direct extrusion contact between the machine glass plates, the service life of the plates can be protected, the sealing performance of the silicon air battery can be enhanced, and the leakage of electrolyte can be effectively prevented.
2) The battery tank body can contain electrolyte with larger capacity, can prevent the electrolyte from being gelled to a large extent by the reaction of silicon and the electrolyte, further prevent the generation of oxides, effectively slow down the passivation of the surface of a silicon negative electrode and prolong the service life of a silicon air battery.
3) The invention tests and processes the data of the discharge loop formed by the silicon air battery, can be used for researching the discharge characteristics of the silicon air battery such as discharge voltage, discharge current, battery temperature and the like, and has wider application range, simple and convenient operation, repeated use and low test cost.
4) The invention is convenient for replacing the polar plate, the air polar plate can be replaced after the mounting screw is taken down, the silicon cathode can be replaced after the silicon cathode window is taken down, and the silicon cathode is convenient to detach on the electrolytic tank body and is easy to replace.
5) The silicon negative electrode can be fixed on the silicon negative electrode window to be in direct contact with electrolyte in the battery tank body, so that the reaction is more sufficient, and the silicon negative electrode is not easy to crack.
6) The invention designs according to the special requirements of the silicon air battery on the working environment, forms a reasonable model, is very convenient and quick to replace the battery cathode silicon slice and electrolyte, greatly improves the overall performance, reliability and easy assembly of the battery, and simplifies the process and reduces the cost.
Drawings
FIG. 1 is a schematic diagram of an exploded construction of a high capacity silicon air battery system of the present invention;
FIG. 2 is a schematic diagram of the overall structure of a high capacity silicon air battery system according to the present invention;
fig. 3 is a schematic view of a silicon negative window structure of a high capacity silicon air battery system of the present invention.
FIG. 4 is a flow chart of a testing method according to the present invention;
1-battery cell body, 111-liquid filling port, 112-plug, 113-silicon negative electrode window groove, 114-threaded hole, 121-cathode hole, 2-air cathode mounting plate, 21-mounting screw, 22-mounting threaded hole, 3-gasket, 4-air cathode, 41-air cathode tab, 5-silicon negative electrode window, 51-fixing screw, 52-fixing threaded hole, 53-silicon negative electrode inserting port, 54-silicon negative electrode fixing groove, 6-silicon negative electrode and 61-silicon negative electrode tab.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific examples.
Examples:
referring to fig. 1 and 2, a high-capacity silicon air battery testing system comprises an air cathode mounting plate 2, an air cathode 4 and a battery tank body 1 which are sequentially arranged, wherein the air cathode mounting plate 2, the air cathode 4 and the battery tank body 1 are connected through mounting screws 21, a silicon negative electrode window 5 is arranged on the battery tank body 1, a silicon negative electrode 6 is inserted into the silicon negative electrode window 5, and a sealing element is arranged on the butt joint surface of the air cathode 4 and the battery tank body 1.
The left sides of the air cathode mounting plate 2 and the battery tank body 1 are respectively provided with a plurality of mounting and mounting threaded holes 22 for mounting, and the air cathode mounting plate 2 and the battery tank body 1 are fixedly connected through mounting screws 21.
The sealing piece arranged at the contact part of the air cathode 4 and the battery tank body 1 is a gasket.
In this embodiment, be equipped with six installation screw holes 22 that run through on the contact surface of air cathode mounting panel 2 and battery cell body 1, installation screw hole 22 and installation screw 21 threaded connection realize fixed connection between air cathode mounting panel 2 and the battery cell body 1, specifically, in order to ensure the leakproofness of junction, the sealing member that is equipped with between air cathode 4 and the battery cell body 1, the sealing member is specifically the gasket, installation screw 21 can run through air cathode mounting panel 2, gasket and battery cell body 1, nut through afterbody threaded connection, and then realize the fixed connection to air cathode mounting panel 2 and battery cell body 1 and realize further fastening effect, in order to further guarantee the leakproofness of test system after the installation, the center pin of air cathode mounting panel 2 that sets gradually, air cathode 4, battery cell body 1 should same level.
Further, the silicon negative electrode window 5 is provided with a plurality of fixing threaded holes 52 for installation, the fixing threaded holes 52 are fixedly connected with the fixing screws 51, the battery tank body 1 is provided with a plurality of threaded holes 114 for installation, and the threaded holes 114 are fixedly connected through the fixing screws 51.
In this embodiment, the number of the fixing threaded holes 52 for mounting provided in the silicon negative electrode window 5 is two, and the fixing screws 51 are symmetrically provided at two ends of the silicon negative electrode window 5, and are in threaded connection with the battery case 1 through the fixing threaded holes 22 at two ends of the silicon negative electrode window 5, so as to fix the silicon negative electrode window 5 and the battery case 1, and the connection mode is also convenient for disassembling the silicon negative electrode window 5 and the battery case 1.
Further, in this embodiment, the air cathode mounting plate 2, the battery case 1 and the silicon anode window 5 are transparent organic glass plates. The air cathode mounting plate 2, the battery tank body 1 and the silicon cathode window 5 are all made of transparent organic glass plates, so that the condition of bubbles in electrolyte when the silicon air battery works can be conveniently observed.
Further, as shown in fig. 3, in this embodiment, the silicon anode 6 is inserted into the silicon anode window 5, and two sides of the silicon anode window 5 are fixedly connected with the upper side of the battery jar body 1 through fixing screws 51.
The silicon negative electrode window 5 is inserted in a position corresponding to the top of the battery jar body 1, a silicon wafer with the width of 1.05cm can be inserted, a groove 54 at the top of the silicon negative electrode window 5 can be used for fixing the silicon negative electrode 5, when the silicon negative electrode 6 needs to be replaced, the fixing screw 51 is loosened, then the silicon negative electrode window 5 is detached from the battery jar body 1, and after the silicon negative electrode 6 inserted on the silicon negative electrode window 5 is replaced, the silicon negative electrode window 5 is re-fixed on the top of the battery jar body 1 through the fixing screw 51.
Further, in this embodiment, the silicon anode 6 further includes: the bonding layer is a titanium adhesive layer, and the current collector is a gold film
In this embodiment, the length of the silicon anode 5 is 1.5cm considering the thickness of the upper side plate of the battery case 1.
The high-capacity silicon air battery test system comprises the following assembly steps:
① The air cathode is cut into a shape of 2 x 2.5cm, wherein 2.5cm is in a vertical direction, 2cm is in a horizontal direction, a nickel tab is led out from a current collector of the air cathode 4 to serve as a positive electrode tab, a gasket 3 is paved on the side of a threaded hole of the battery tank body 1 in an aligned mode, then the air cathode 4 is paved, the center of the air cathode 4 is kept consistent with the center of a cathode hole 121, then an air cathode mounting plate 2 is paved, the air cathode mounting plate 2, the gasket 3 and six mounting threaded holes 22 on the battery tank body 1 are aligned, a mounting screw 21 sequentially penetrates through the air cathode mounting plate 2, the gasket 3 and the battery tank body 1, and further fastening of the air cathode mounting plate 2, the gasket 3 and the battery tank body 1 is achieved by nuts at the tail of the mounting screw 21.
② The silicon wafer is cut into a shape of 1x 1.5cm, wherein 1.5cm is in the vertical direction, 1cm is in the horizontal direction, a layer of gold film containing a titanium adhesion layer is evaporated on the silicon wafer, a nickel tab is led out from a current collector to serve as a negative electrode tab, a silicon negative electrode 6 is inserted into a groove 54 formed in the top of a silicon negative electrode window 5, fixing of the silicon negative electrode 6 is achieved, then the silicon negative electrode window 5 with the silicon negative electrode 6 inserted therein is inserted into the top of a battery tank body 1, and two ends of the silicon negative electrode window 5 are fixedly connected with the battery tank body 1 through fixing screws 51, so that the silicon negative electrode window 5 is fixed on the battery tank body 1.
③ The liquid filling port plug 112 is unscrewed, electrolyte is filled into the battery tank body 1 through the liquid filling port 111 until the battery tank body 1 is filled with the electrolyte, liquid filling is stopped, and the plug 112 is screwed.
When the air cathode mounting plate is mounted, the air cathode mounting plate, the air cathode, the gasket and the battery tank body are placed correctly, so that the center line is guaranteed to be on the same level, and then nuts in threaded connection with the tail parts of the fixing screws are screwed down, so that good tightness among all the components is guaranteed.
When the battery discharging efficiency is poor, the capacity is obviously reduced, the battery negative electrode needs to be replaced, electrolyte is replaced, the new silicon negative electrode 6 is replaced after the silicon negative electrode window 5 is detached, then the silicon negative electrode window 5 is fixed on the battery tank body 1, a device on the positive electrode side does not need to be changed, after the electrolyte is replaced in the battery tank body 1, the whole device is continuously used, the replacement of the negative electrode is simple in operation, and poor air tightness of the device caused by repeated detachment of the whole device is avoided.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the scope of the present invention, and all designs which are the same or similar to the present invention are within the scope of the present invention.

Claims (7)

1. The high-capacity silicon air battery testing system comprises an air cathode mounting plate (2), an air cathode (4) and a battery tank body (1) which are sequentially arranged, wherein the air cathode mounting plate (2), the air cathode (4) and the battery tank body (1) are connected through mounting screws (21), and the high-capacity silicon air battery testing system is characterized in that a silicon negative electrode window (5) is arranged on the battery tank body (1), a silicon negative electrode (6) is inserted into the silicon negative electrode window (5), and a sealing piece is arranged on a butt joint surface of the air cathode (4) and the battery tank body (1);
The silicon negative electrode (6) is spliced with the silicon negative electrode window (5), and two sides of the silicon negative electrode window (5) are fixedly connected with the upper side of the battery tank body (1) through fixing screws (51);
the silicon anode (6) further comprises: the bonding layer is a titanium adhesion layer, and the current collector is a gold film.
2. The high-capacity silicon air battery test system according to claim 1, wherein the silicon negative electrode window (5) is provided with a plurality of fixing threaded holes (52) for installation, the fixing threaded holes (52) are fixedly connected with the fixing screws (51), the battery tank body (1) is provided with a plurality of threaded holes (114) for installation, and the threaded holes (114) are fixedly connected with the fixing screws (51).
3. The high-capacity silicon air battery test system according to claim 1, wherein a plurality of mounting threaded holes (22) for mounting are respectively formed in the left sides of the air cathode mounting plate (2) and the battery tank body (1), and the air cathode mounting plate (2) and the battery tank body (1) are fixedly connected through mounting screws (21).
4. The high-capacity silicon air battery test system according to claim 1, wherein the battery tank body (1) is provided with a liquid injection port (111), the liquid injection port (111) is a threaded hole, and the liquid injection port (111) is in threaded connection with a plug (112).
5. A high capacity silicon air battery test system according to claim 1, characterized in that the air cathode mounting plate (2), battery housing (1) and silicon negative window (5) are transparent organic glass plates.
6. The high-capacity silicon air battery test system according to claim 1, wherein the sealing member arranged at the contact position of the air cathode (4) and the battery tank body (1) is a gasket.
7. The method for installing the high-capacity silicon air battery test system is characterized by comprising the following steps of:
① Cutting the air cathode (4) according to 2 x 2.5cm, leading out a nickel tab at the current collector of the air cathode (4) as a positive electrode tab, sequentially paving a gasket (3) and the air cathode (4) on the side, with a threaded hole, of the battery tank body (1) in alignment, ensuring that the center of the air cathode (4) is aligned with the center of a cathode opening (121), and fixedly connecting the paved air cathode mounting plate (2) with the gasket (3) and six mounting threaded holes (22) of the battery tank body (1) through mounting screws (21), wherein the tail parts of the mounting screws (21) are fixed through nuts;
② Cutting a silicon wafer according to 1 x 1.5cm, evaporating a gold film containing a titanium adhesion layer on the silicon wafer, leading out a nickel tab at a current collector to serve as a negative electrode tab, inserting a silicon negative electrode (6) into a silicon negative electrode fixing groove (54) formed in the top of a silicon negative electrode window (5), inserting the silicon negative electrode window (5) into a battery groove body (1), and fixing through a fixing screw (51);
③ Electrolyte is injected into the battery tank body (1) through the liquid injection port (111) until the battery tank body (1) is filled with the electrolyte, and liquid injection is stopped.
CN202110700526.0A 2021-06-23 2021-06-23 Silicon air battery test system Active CN113433461B (en)

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CN114397346B (en) * 2022-01-13 2023-03-10 中国科学技术大学 A new in-situ quantitative analysis device for tail gas during charging of zinc-air batteries
CN116429861A (en) * 2023-05-08 2023-07-14 重庆国创轻合金研究院有限公司 Method and system for testing anode and cathode materials of metal-air battery

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