CN110148779A - Application, low temperature liquid molten salt lithium battery and preparation method of the LiI-KI eutectic salts in low temperature liquid molten salt lithium battery - Google Patents
Application, low temperature liquid molten salt lithium battery and preparation method of the LiI-KI eutectic salts in low temperature liquid molten salt lithium battery Download PDFInfo
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- CN110148779A CN110148779A CN201910480164.1A CN201910480164A CN110148779A CN 110148779 A CN110148779 A CN 110148779A CN 201910480164 A CN201910480164 A CN 201910480164A CN 110148779 A CN110148779 A CN 110148779A
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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
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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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0563—Liquid materials, e.g. for Li-SOCl2 cells
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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
- H01M10/058—Construction or manufacture
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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
Abstract
The present invention provides a kind of application in low temperature liquid molten salt lithium battery of LiI-KI eutectic salts, low temperature liquid molten salt lithium battery and preparation method thereof, belongs to field of lithium.A kind of application the present invention provides LiI-KI eutectic salts as electrolyte in low temperature liquid molten salt lithium battery.Eutectic temperature of the present invention using LiI-KI eutectic salts as electrolyte is 260~265 DEG C, and full liquid molten salt lithium battery may be implemented and work under 300 DEG C of operation temperatures below.The experimental results showed that low temperature liquid molten salt lithium battery provided by the invention has good charge and discharge cycles, open-circuit voltage 0.76V, discharge platform voltage stabilization is 0.8~0.9V in 0.5~0.6V, discharge platform, and coulombic efficiency is basically stable at 97% or so.
Description
Technical field
The present invention relates to technical field of lithium batteries, in particular to a kind of LiI-KI eutectic salts are in low temperature liquid molten salt lithium battery
In application, low temperature liquid molten salt lithium battery and preparation method thereof.
Background technique
While global economy develops rapidly, the problems such as along with more and more energy storages and environment, fossil energy
Continuous consumption, cause carbon dioxide isothermal chamber gas constantly to discharge, and then lead to global warming.Therefore, in order to which save can not
The renewable sources of energy improve energy utilization rate it is necessary to continue to develop new energy equipment.Solar energy and wind energy are outstanding renewable energies
Source, but due to itself intermittence and fluctuation, if being directly entered power generation network, it will lead to serious safety problem, shadow
Ring the reliability of entire network system.Battery can accomplish effective energy storage, and can be designed to large-scale energy storage
Equipment, the extensive energy storage of battery are the key means for solving energy consumption, and the cleanings energy such as solar energy and wind energy can be improved in it
The efficiency of storage in source improves the safety and reliability of network system, and therefore, it is a kind of the most with the energy storage of application prospect
One of technology.At this stage, the energy-storage battery for developing comparative maturity has lithium ion battery, the high temperature sodium-sulphur battery and full liquid state batteries
Deng.But expensive production cost and safety issue, it is difficult to meet large-scale market demands.Therefore, design low cost, length
Longevity efficient energy-storage battery becomes the main research work of next stage.
2006, professor D.R.Sadoway of Massachusetts Institute Technology proposed the new concept of " liquid metal cell ",
Liquid metal cell has the characteristics that structure is simple, at low cost, the service life is long, high-efficient, therefore the exploitation of liquid metal cell is drawn
The great interest of global research team is played.But liquid metal cell never enters market, mainly due to its fused salt
For electrolyte mostly with lithium chloride, lithium bromide etc. for base, fusing point is too high, cause the operation temperature of battery it is excessively high (400 DEG C with
On) the problem of be difficult to solve.
Summary of the invention
A kind of application that the purpose of the present invention is to provide LiI-KI eutectic salts in low temperature liquid molten salt lithium battery, low temperature
Liquid molten salt lithium battery and preparation method thereof.The present invention can significantly reduce Low Temperature Liquid using LiI-KI eutectic salts as electrolyte
The operation temperature of state molten salt lithium battery.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of application the present invention provides LiI-KI eutectic salts as electrolyte in low temperature liquid molten salt lithium battery.
The present invention also provides a kind of low temperature liquid molten salt lithium batteries, using metal Li as cathode, with Bi-Sn alloy work
For anode, using LiI-KI eutectic salts as electrolyte.
Preferably, the molar ratio of LiI and KI is 58%~60%:42%~40% in the LiI-KI eutectic salts.
Preferably, for the low temperature liquid molten salt lithium battery cathode using mild steel as collector, anode is collection with graphite crucible
Fluid, shell of the graphite crucible as low temperature liquid molten salt lithium battery.
Preferably, there is hollow bottomless aluminium oxide earthenware between the graphite crucible and the inside of low temperature liquid molten salt lithium battery
Crucible.
Preferably, there are two apertures for tool on the graphite crucible, are inserted into temperature regulating device thermocouple and molybdenum stick respectively.
The present invention also provides the preparation methods of the low temperature liquid molten salt lithium battery, comprising the following steps:
By graphite crucible and alumina crucible successively with after alcohol wipe, washing, drying and be cooled to room temperature, by gained oxygen
Change aluminium crucible to be put into gained graphite crucible, then temperature regulating device thermocouple is inserted into the hole of gained graphite crucible, completes low temperature
The basic assembly of liquid molten salt lithium battery outer casing container；
Bismuth tin alloy is put into graphite crucible, heating melting is placed in the bottom of gained alumina crucible, completes low temperature
The preparation of liquid molten salt lithium battery anode；
LiI-KI eutectic salts, lithium grain are sequentially added in gained alumina crucible, three layers of battery structure is obtained, then will
Mild steel is inserted into lithium grain, is covered alumina cover, is reloaded into molybdenum stick, obtains low temperature liquid molten salt lithium battery.
Preferably, the temperature of the heating melting is 170~200 DEG C, and the time is 1~2h.
Preferably, the LiI-KI eutectic salts reuse after grinding, and the time of the grinding is 20~30min.
A kind of application the present invention provides LiI-KI eutectic salts as electrolyte in low temperature liquid molten salt lithium battery.This
Eutectic temperature of the invention using LiI-KI eutectic salts as electrolyte is 260~265 DEG C, and full liquid molten salt lithium battery may be implemented and exist
It works under 300 DEG C of operation temperatures below.The experimental results showed that low temperature liquid molten salt lithium battery provided by the invention has well
Charge and discharge cycles, open-circuit voltage 0.76V, for discharge platform voltage stabilization in 0.5~0.6V, discharge platform is 0.8~0.9V,
Coulombic efficiency is basically stable at 97% or so.
The present invention also provides a kind of low temperature liquid molten salt lithium batteries, using metal Li as cathode, with Bi-Sn alloy work
For anode, using LiI-KI eutectic salts as electrolyte.The negative electrode material of low temperature liquid molten salt lithium battery provided by the invention selects
Pure lithium, positive electrode select bismuth tin alloy, and minimum eutectic temperature is 139 DEG C, the operating temperature of low temperature liquid molten salt lithium battery
It can control at 295~300 DEG C, the operating temperature of low temperature liquid molten salt lithium battery is realized for the first time at 300 DEG C hereinafter, increasing in turn
The service life of battery reduces the corrosion of material, and expands the application range of battery sealing material significantly.
Further, low temperature liquid molten salt lithium battery cathode provided by the invention is using mild steel as collector, and anode is with stone
Black crucible is collector, and shell of the graphite crucible as low temperature liquid molten salt lithium battery, mild steel is not easy and lithium metal is sent out
Raw reaction, and conductive capability is outstanding, resistance is smaller；There is hollow nothing between graphite crucible and the inside of low temperature liquid molten salt lithium battery
The alumina crucible at bottom, hollow bottomless alumina crucible can prevent cathode from contacting to form short circuit with plus plate current-collecting body.
Detailed description of the invention
Fig. 1 is the phasor for the bismuth tin alloy that embodiment 1 uses；
Fig. 2 is the structural schematic diagram of low temperature liquid molten salt lithium battery made from embodiment 1；
Fig. 3 is the pictorial diagram of low temperature liquid molten salt lithium battery made from embodiment 1；
Fig. 4 is the pictorial diagram of 1 high temperature furnace of embodiment；
Fig. 5 is the charging and discharging curve of low temperature liquid molten salt lithium battery made from embodiment 1；
Fig. 6 is the different current density charging and discharging curves of low temperature liquid molten salt lithium battery made from embodiment 1；
Fig. 7 is the charging and discharging curve of the not homogeneous circulation of low temperature liquid molten salt lithium battery made from embodiment 1；
Fig. 8 is the coulombic efficiency and charge/discharge capacity and cycle-index of low temperature liquid molten salt lithium battery made from embodiment 1
Relational graph.
Specific embodiment
A kind of application the present invention provides LiI-KI eutectic salts as electrolyte in low temperature liquid molten salt lithium battery.This
Eutectic temperature of the invention using LiI-KI eutectic salts as electrolyte is 260~265 DEG C, and full liquid molten salt lithium battery may be implemented and exist
It works under 300 DEG C of operational temperature conditions below.
The present invention also provides a kind of low temperature liquid molten salt lithium batteries, using metal Li as cathode, with Bi-Sn alloy work
For anode, using LiI-KI eutectic salts as electrolyte.
In the present invention, in the LiI-KI eutectic salts molar ratio of LiI and KI be preferably 58%~60%:42%~
40%, more preferably 58%:42% or 60%:40%.
In the present invention, the minimum eutectic temperature of the Bi-Sn alloy is preferably 139 DEG C, and the present invention closes the Bi-Sn
The source of gold does not have special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the low temperature liquid molten salt lithium battery cathode is preferably using mild steel as collector, and anode is with graphite
Crucible is collector, shell of the graphite crucible as low temperature liquid molten salt lithium battery.In the present invention, the mild steel is not
It easily reacts with lithium metal, and conductive capability is outstanding, resistance is smaller.In the present invention, the mild steel is preferably inserted into lithium grain
In be connected with low temperature liquid molten salt lithium battery cathode, with molybdenum stick connecting wire lead to low temperature liquid molten salt lithium battery test set
It is standby.
In the present invention, preferably have between the graphite crucible and the inside of low temperature liquid molten salt lithium battery hollow bottomless
Alumina crucible.In the present invention, the hollow bottomless alumina crucible can prevent cathode and plus plate current-collecting body from contacting shape
At short circuit.
In the present invention, preferably there are two apertures for tool on the graphite crucible, are preferably inserted into temperature regulating device thermocouple respectively
With molybdenum stick.
The present invention also provides the preparation methods of the low temperature liquid molten salt lithium battery, comprising the following steps:
By graphite crucible and alumina crucible successively with after alcohol wipe, washing, drying and be cooled to room temperature, by gained oxygen
Change aluminium crucible to be put into gained graphite crucible, then temperature regulating device thermocouple is inserted into the hole of gained graphite crucible, completes low temperature
The basic assembly of liquid molten salt lithium battery outer casing container；
Bismuth tin alloy is put into graphite crucible, heating melting is placed in the bottom of gained alumina crucible, completes low temperature
The preparation of liquid molten salt lithium battery anode；
LiI-KI eutectic salts, lithium grain are sequentially added in gained alumina crucible, three layers of battery structure is obtained, then will
Mild steel is inserted into lithium grain, is covered alumina cover, is reloaded into molybdenum stick, obtains low temperature liquid molten salt lithium battery.
The present invention by graphite crucible and alumina crucible successively with after alcohol wipe, washing, drying and be cooled to room temperature, will
Gained alumina crucible is put into gained graphite crucible, then temperature regulating device thermocouple is inserted into the hole of gained graphite crucible, complete
At the basic assembly of low temperature liquid molten salt lithium battery outer casing container.The present invention to the alcohol wipe, washing, dry and be cooled to
The concrete mode of room temperature does not have special restriction, using mode well known to those skilled in the art.
Bismuth tin alloy is put into graphite crucible by the present invention, and heating melting is placed in the bottom of gained alumina crucible, complete
At the preparation of low temperature liquid molten salt lithium battery anode.In the present invention, the temperature of the heating melting is preferably 170~200 DEG C,
Time is preferably 1~2h.
The present invention sequentially adds LiI-KI eutectic salts, lithium grain in gained alumina crucible, obtains three layers of battery structure,
Then mild steel is inserted into lithium grain, covers alumina cover, be reloaded into molybdenum stick, obtains low temperature liquid molten salt lithium battery.
In the present invention, the LiI-KI eutectic salts are after grinding preferably through reusing, and the time of the grinding is preferably
20~30min.
In the present invention, it is preferred in glove box weigh lithium grain, be put into beaker be sealed with sealed paper it is spare.
In the present invention, three layers of the battery structure include successively include bismuth tin alloy layers, LiI-KI eutectic salt deposit and
Lithium layer.The thickness of three battery layers is preferably more than the 15% of bismuth tin alloy layers without specific requirement, the quality of the lithium layer.
In order to further illustrate the present invention, below with reference to embodiment to a kind of LiI-KI eutectic salts provided by the invention low
Application, low temperature liquid molten salt lithium battery in warm liquid molten salt lithium battery and preparation method thereof are described in detail, but cannot
They are interpreted as limiting the scope of the present invention.
Embodiment 1
It will wash, be put into baking oven 8 hours after graphite crucible and alumina crucible alcohol wipe.Room is cooled to after taking-up
Temperature is put into alumina crucible in graphite crucible, then by the hole of temperature regulating device insertion graphite crucible, completes battery case container
Basic assembly.
It weighs 40 grams of bismuth tin alloy and is put into graphite crucible, heated 1 hour at 200 DEG C, its melting is made to be placed in electricity
Bottom of pond portion completes the preparation of anode.Then it is cooled to room temperature.Lithium grain is weighed in glove box, is put into beaker with sealing
Paper is sealed, then (molar ratio 58:42) weighs LiI-KI electrolyte in proportion, is put into after grinding 30min in mortar and pours into burning
Cup.Electrolyte powder and lithium grain are successively poured into alumina crucible rapidly after taking out in glove box, so that battery structure is rough
Be divided into three layers.Negative current collector is inserted into metallic lithium layer later, covers alumina cover, is packed into plus plate current-collecting body and conductive molybdenum gold
Belong to stick, completes battery assembly.
Fig. 1 is the phasor for the bismuth tin alloy that the present embodiment uses, as can be seen from FIG. 1, the bismuth tin alloy that the present embodiment uses
Minimum eutectic temperature be 139 DEG C.
Fig. 2 is the structural schematic diagram of low temperature liquid molten salt lithium battery made from the present embodiment, and 1 is to connect with cathode in figure
Molybdenum stick, 2 be the molybdenum stick connecting with graphite crucible, and 3 be mild steel；4 be cathode (Li)；5 be LiI-KI eutectic salts electricity
Xie Zhi, 6 be Bi-Sn alloy anode, and 7 be alumina crucible, and 8 be graphite crucible, wherein 1 and 2 respectively in low temperature liquid fused salt lithium
Cathode and anode are connected when battery testing.
Fig. 3 is the pictorial diagram of low temperature liquid molten salt lithium battery.
Low temperature liquid molten salt lithium battery made from the present embodiment is tested for the property in high temperature furnace, the material object of high temperature furnace
Figure is shown in Fig. 4.Tested that specific step is as follows in high temperature furnace:
Check airtightness of high temperature test furnace body etc. (furnace body of designed, designed, argon atmosphere protection).Cooling water is opened to follow
Fluororubber O-type ring is pressed into the groove between bell and boiler tube, tightens bolt, completes sealing by ring machine.Vacuum pump is opened to attempt
It vacuumizes, it is -0.08~-0.1MPa that air pressure, which is evacuated to vacuum degree, then rushes argon gas to skipping over pressure condition, it was demonstrated that furnace body airtightness is good
It is good.
Being tamping after bolt and being evacuated to vacuum degree is -0.08~-0.1MPa, be re-filled with argon gas to positive pressure 0.01~
0.02MPa is vacuumized again, this step recycles three times altogether.Rear startup program is vacuumized 4th time, with the heating of 3~5 DEG C/min
Rate is warming up to 100 DEG C or so, keeps the temperature 5~8h, it is therefore an objective to completely remove moisture that may be present；Again with the liter of 3~5 DEG C/min
Warm rate is warming up to 295 DEG C, heat preservation.
It is all melted into liquid to positive and negative anodes and electrolyte after keeping the temperature 6 hours at 295 DEG C, can start to measure dependency number
According to.Using blue electrical measurement test system, the parameter of test has balance open-circuit voltage, constant-current charge curve and constant-current discharge curve etc. simultaneously more
Secondary circulation.It is cooled to room temperature after being completed, chisels battery, observe interior laminate layer pattern.
Battery performance analysis:
Fig. 5 is charging and discharging curve, and as seen from Figure 5, the open-circuit voltage of battery is stablized in 0.76V or so, and battery has relatively steady
Fixed electric discharge and charging voltage platform, discharge voltage are stablized in 0.5~0.6V or so, and charging voltage maintains the left side 0.8~0.9V
It is right.The battery is run showing the battery under 295 DEG C of low temperature, still has good stable charge/discharge.According to
The EDS of positive electrode is analyzed, and voltage platform is first remarkably decreased in discharge process, and what is primarily formed at this time is LixBi phase, in voltage
Relatively stable region, is primarily present LixBi and Li3Bi two-phase.Positive electrode is Bi-Sn alloy, since the activity of metal Bi is excellent
In Sn, therefore metal Sn acts mainly as the effect for reducing positive fusion temperature.And under the conditions of the temperature less than 300 DEG C, electricity
The corrosivity and leakproofness in pond can obtain huge improvement, and sealing material and insulating materials have more selections；Meanwhile it reducing
Operation temperature can effectively reduce energy needed for maintaining battery operational temperatures, reduce the cost of battery indirectly, be conducive to carry out
Large power energy storage.
Fig. 6 is different current density charging and discharging curves, it will be appreciated from fig. 6 that the electric discharge of battery is flat with the increase of current density
Platform is declined, and charging platform is risen, and electric current is bigger, and the internal resistance of cell is bigger, and discharge platform is lower, meets the practical feelings of battery
Condition is increasing 100mA/cm2Current density after, the discharge platform of battery declines about 0.09V, due to the increasing of current density
Add, lead to the increase of the internal resistance of cell and loss, discharge platform reduces.
Fig. 7 is the charging and discharging curve of not homogeneous circulation, as seen from Figure 7, the battery charging and discharging under different cycle-indexes
Curve essentially coincides, and discharge platform is undergoing different circulations to be all stable between 0.5~0.6V substantially, illustrates electrolyte
With good stability between positive electrode, the stable circulation performance of battery is good.When experienced 10 circulation left and right,
Power down process is carried out to battery, is on the way cooled to room temperature battery, then rise to operation temperature again, the performance of battery is simultaneously not affected by
It influences.
Fig. 8 is the relational graph of coulombic efficiency and charge/discharge capacity and cycle-index, as seen from Figure 8, the coulomb of battery
Efficiency is basically stable at 97%, and energy attenuation very little, this is the universal feature of liquid state batteries, and the charge/discharge capacity of battery does not almost have
There is decaying, be maintained between 6.7~7.1Ah, battery performance is stablized.After it experienced more than 100 circulation, battery still has
Good charge-discharge performance.Liquid High Temperature Lithium Cell has the characteristics that the long-life, is since positive and negative anodes and electrolyte are in high temperature item
It is all in a liquid state under part, so just there is no common lithium battery, there are the problems such as Li dendrite to cause positive and negative anodes short-circuit, this is significant
The advantages of it can be made to occupy critically important position in energy storage field.
Embodiment 2
Same as Example 1, difference is only that the molar ratio 60:40 of LiI and KI in LiI-KI eutectic salt electrolyte.
Chemical property measurement is carried out to low temperature liquid molten salt lithium battery made from embodiment 2, step is with embodiment 1 one
It causes, as a result as follows:
Using the fused salt ratio of the ratio, the operation temperature of battery only increases 5 DEG C, can keep essentially identical electrochemistry
Curve.The open-circuit voltage of battery is also basically stable at 0.76V or so, and battery has more stable electric discharge and charging voltage platform,
Discharge voltage is similarly stable in 0.5~0.6V or so, and charging voltage maintains 0.8~0.9V or so, no too many differences.The electricity
Pond is run showing the battery under 300 DEG C of low temperature, still has good stable charge/discharge.
The coulombic efficiency of battery is equally basically stable at 97~98%, energy attenuation very little, after 100 times or more circulations,
The charge/discharge capacity of battery is maintained between 6.7~7.1Ah almost without decaying, and battery performance is stablized.Equally it experienced
After more than 100 circulation, battery still has good charge-discharge performance.
The above is only a preferred embodiment of the present invention, it is not intended to limit the present invention in any form.It should
It points out, for those skilled in the art, without departing from the principle of the present invention, if can also make
Dry improvements and modifications, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (9)
1. a kind of application of LiI-KI eutectic salts as electrolyte in low temperature liquid molten salt lithium battery.
2. a kind of low temperature liquid molten salt lithium battery, which is characterized in that using metal Li as cathode, using Bi-Sn alloy as anode,
Using LiI-KI eutectic salts as electrolyte.
3. low temperature liquid molten salt lithium battery according to claim 2, which is characterized in that LiI in the LiI-KI eutectic salts
Molar ratio with KI is 58%~60%:42%~40%.
4. low temperature liquid molten salt lithium battery according to claim 2, which is characterized in that the low temperature liquid molten salt lithium battery
Cathode is using mild steel as collector, and anode is using graphite crucible as collector, and the graphite crucible is as low temperature liquid fused salt lithium electricity
The shell in pond.
5. low temperature liquid molten salt lithium battery according to claim 4, which is characterized in that the graphite crucible and low temperature liquid
There is hollow bottomless alumina crucible between the inside of molten salt lithium battery.
6. low temperature liquid molten salt lithium battery according to claim 4 or 5, which is characterized in that have on the graphite crucible
Two apertures are inserted into temperature regulating device thermocouple and molybdenum stick respectively.
7. the preparation method of low temperature liquid molten salt lithium battery as claimed in claim 6, which comprises the following steps:
By graphite crucible and alumina crucible successively with after alcohol wipe, washing, drying and be cooled to room temperature, by gained aluminium oxide
Crucible is put into gained graphite crucible, then temperature regulating device thermocouple is inserted into the hole of gained graphite crucible, completes low temperature liquid
The basic assembly of molten salt lithium battery outer casing container；
Bismuth tin alloy is put into graphite crucible, heating melting is placed in the bottom of gained alumina crucible, completes low temperature liquid
The preparation of molten salt lithium battery anode；
LiI-KI eutectic salts, lithium grain are sequentially added in gained alumina crucible, three layers of battery structure is obtained, then by low-carbon
Steel is inserted into lithium grain, is covered alumina cover, is reloaded into molybdenum stick, obtains low temperature liquid molten salt lithium battery.
8. preparation method according to claim 7, which is characterized in that the temperature of the heating melting is 170~200 DEG C,
Time is 1~2h.
9. preparation method according to claim 7, which is characterized in that the LiI-KI eutectic salts make again after grinding
With the time of the grinding is 20~30min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864461A (en) * | 2019-11-12 | 2021-05-28 | 丰田自动车株式会社 | Method for producing sulfide solid electrolyte material |
| CN113809409A (en) * | 2021-08-16 | 2021-12-17 | 北京科技大学 | Low-melting-point molten salt electrolyte of liquid or semi-liquid metal battery, preparation and application |
| CN114792847A (en) * | 2022-05-05 | 2022-07-26 | 华中科技大学 | Low-temperature liquid metal battery and preparation method thereof |
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| US20140099522A1 (en) * | 2012-10-05 | 2014-04-10 | Massachusetts Institute Of Technology | Low-Temperature Liquid Metal Batteries for Grid-Scaled Storage |
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| CN107403887A (en) * | 2017-07-20 | 2017-11-28 | 北京科技大学 | A kind of liquid metal cell device and its assembly method |
| CN109722554A (en) * | 2018-12-22 | 2019-05-07 | 北京航空航天大学青岛研究院 | A method of reducing wetability between high temperature alloy melt and oxide ceramics crucible |
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| CN112864461A (en) * | 2019-11-12 | 2021-05-28 | 丰田自动车株式会社 | Method for producing sulfide solid electrolyte material |
| CN112864461B (en) * | 2019-11-12 | 2024-03-26 | 丰田自动车株式会社 | Method for producing sulfide solid electrolyte material |
| CN113809409A (en) * | 2021-08-16 | 2021-12-17 | 北京科技大学 | Low-melting-point molten salt electrolyte of liquid or semi-liquid metal battery, preparation and application |
| CN114792847A (en) * | 2022-05-05 | 2022-07-26 | 华中科技大学 | Low-temperature liquid metal battery and preparation method thereof |
| CN114792847B (en) * | 2022-05-05 | 2024-04-19 | 华中科技大学 | Low-temperature liquid metal battery and preparation method thereof |
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