CN206727162U - A kind of multitube sodium-sulphur battery - Google Patents
A kind of multitube sodium-sulphur battery Download PDFInfo
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- CN206727162U CN206727162U CN201720079821.8U CN201720079821U CN206727162U CN 206727162 U CN206727162 U CN 206727162U CN 201720079821 U CN201720079821 U CN 201720079821U CN 206727162 U CN206727162 U CN 206727162U
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- Prior art keywords
- negative pole
- sodium
- metallic layers
- porous metallic
- battery
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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 provides a kind of multitube sodium-sulphur battery, including positive pole, positive pole shell, negative pole and anode coat, the negative pole is extended in positive pole by multiple Compound Negative pole pipes of array arrangement, negative pole arrangement, the Compound Negative pole pipe include the porous metallic layers of internal layer and are attached to the solid electrolyte layer supported by porous metallic layers of outer layer multiple Compound Negative pole pipes altogether.The utility model solves the easily rupturable phenomenon of tubular type sodium-sulphur battery earthenware by the design of porous metallic layers, so as to lift battery performance and safe class；Battery operating temperature is reduced by the method for the adion liquid in Compound Negative pole pipe porous metallic layers, so as to reduce manufacturing cost, extend battery；Battery structure is further improved simultaneously, is taken with multiple Compound Negative pole pipe array arrangements and both positive and negative polarity active material quarantine measures, reaches the further purpose of raising cell power density and battery security.
Description
Technical field
It the utility model is related to cell art, and in particular to a kind of multitube sodium-sulphur battery.
Background technology
It is an important development of current electrokinetic cell industry using metallic sodium as a kind of battery of negative pole, elemental sulfur for positive pole
Direction, typical sodium-sulphur battery are designed as tubular structure, and its tube wall uses solid electrolyte ceramic material.Sodium-sulphur battery, which has, to be permitted
In place of more characteristics：Compared with existing lithium ion battery, first, higher than energy.It than energy is 760Wh/Kg that it is theoretical, actual product
It is more than 300Wh/Kg；Second, can high current charge-discharge, its discharge current density is typically up to 200-300mA/cm2, and instantaneously
Between can release its 3 times of self-energy；Another is efficiency for charge-discharge height.Due to using beta- alumina glass ceramic materials
Do solid electrolyte and barrier film, thus without the secondary cell of generally use liquid electrolyte and organic polymer porous septum that
Kind of self discharge and " shuttle effect ", charging and discharging currents efficiency almost 100%.
But in place of sodium-sulphur battery also has a wretched insufficiency, its earthenware is easily rupturable, cause the negative metal sodium of molten state with just
Negative electrode active material sulphur largely contacts, and causes acutely chemical reaction and burns.This severe compromise governs this kind of battery and existed
Application on the mobile devices such as electric car.In addition, its operating temperature at 300-350 DEG C, causes battery structure material easy to aging, system
Cause this also higher.
Utility model content
Based on weak point existing for existing sodium-sulphur battery technology, the utility model provides a kind of multitube sodium-sulphur battery,
By using Compound Negative pole pipe to solve the easily rupturable security hidden trouble of traditional sodium sulphur cell ceramic tube, and by Compound Negative
The method of pole pipe porous metallic layers adion liquid, improve molten metal sodium and solid electrolyte interface compatibility, so as to reach
To the purpose for reducing battery operating temperature.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：
A kind of multitube sodium-sulphur battery, including positive pole, positive pole shell, negative pole and anode coat, it is described just extremely containing work
Property sulphur positive pole S/C active materials, the negative pole is arranges containing sodium metal negative electrode active material, the negative pole by array
Several Compound Negative pole pipes of cloth are extended in positive pole, and several Compound Negative pole pipes altogether arrange by negative pole, the Compound Negative pole pipe bag
Include the porous metallic layers of internal layer and be attached to outer layer by porous metallic layers support solid electrolyte layer, the porous metallic layers with
Anode coat is connected, and collectively as negative collector electrode, the positive pole shell is in contact with the carbon material in positive pole to be collectively formed just
Pole colelctor electrode.
Dead ring is provided between the positive pole and negative pole, the dead ring is connected with solid electrolyte layer.
Ionic liquid is adsorbed with the porous metallic layers.
The thickness of the porous metallic layers is 0.2~1.5mm.
Porous metals average pore size is 0.1~5um in the porous metallic layers, and porosity is 50~80%.
The thickness of the solid electrolyte layer is 0.015~0.060mm.
From above technical scheme, Compound Negative pole pipe is applied in sodium-sulphur battery to solve earthenware by the utility model
Easily rupturable potential safety hazard；Tubular type sodium-sulphur battery work temperature is reduced by the design of the adion liquid in porous metallic layers
Degree, so as to extend battery life and reduce manufacturing cost；Battery structure is further improved simultaneously, is taken with multiple composite negative poles
Pipe array arrangement and both positive and negative polarity active material space quarantine measures, reach the mesh for improving cell power density and battery security
, and the full technical strategies of sodium-sulphur battery and practical technical scheme are constituted with this.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of the utility model multitube sodium-sulphur battery, and shows the office of dead ring region
Portion's enlarged drawing；
Fig. 2 is the structural representation of Compound Negative pole pipe in the utility model；
Fig. 3 is that the utility model solid electrolyte layer blocks formation mechenism schematic diagram automatically when there is breakdown point.
In figure：1st, positive pole, 2, positive pole shell, 3, negative pole, 4, anode coat, 5, Compound Negative pole pipe, 51, porous metallic layers,
52nd, solid electrolyte layer, 6, dead ring.
Embodiment
A kind of preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the sodium-sulphur battery includes positive pole 1, positive pole shell 2, negative pole 3, anode coat 4, and with electricity
The Compound Negative pole pipe 5 of matter and barrier film function is solved, the negative pole is extended in positive pole by multiple Compound Negative pole pipes of array arrangement,
The negative pole Integration Design assembling altogether of more Compound Negative pole pipes, can improve cell energy density and efficiency.
The positive pole 1 is the S/C composite reactive things containing active sulfur, the S/C composite reactives thing containing active sulfur it may be said that
Into being the S/C composites containing active sulfur, the negative pole 3 includes sodium metal negative electrode active material, that is, liquid metal sodium.
The negative pole is extended in positive pole by Compound Negative pole pipe, increases contact area, improves discharging efficiency.It is described compound
The internal diameter r of cathode tube is 1~4mm, and external diameter R is 1.43~7.12mm, and composite negative pole length is 10~300mm.Compound Negative pole pipe
Less intracavity diameter, the possibility that negative pole molten metal sodium active matter largely contacts with positive electrode active material sulphur is avoided, significantly
Improve the security of battery.
As shown in Fig. 2 the Compound Negative pole pipe 5 includes porous metallic layers 51 and solid electrolyte layer 52, wherein solid electricity
Solution matter layer is attached to porous metallic layers outer layer, and the porous metallic layers are played a supporting role.In the support being made up of porous metallic layers
The solid electrolyte layer of body surface face composite conducting, have mechanical strength high, be not easily broken, be broken, the characteristics of shock resistance is strong.It is porous
Metal level 51 is connected with anode coat 4, collectively as negative collector electrode, adds electronic conductance, positive pole shell 4 with positive pole
Carbon material contacts, and collectively forms positive collector electrode.Dead ring 6 is additionally provided between positive pole and negative pole, the dead ring and solid electricity
Solve the connection of matter layer, play both positive and negative polarity insulating effect, while high temperature resistant, preferably Ai2O3 (aluminum oxide) ceramic ring, its intensity compared with
Greatly.
The thickness of porous metallic layers 51 is 0.2~1.5mm, with stainless steel, titanium, nickel, bronze, nickel alloy, titanium alloy
A kind of metal dust is mixed and made into shape embryo with adhesive, pore creating material, sintering aid, and shape embryo forms after firing through chemical washing, porous
In 0.1~1um, porosity is 50~80% in aperture in metal level.The thickness of the solid electrolyte layer 52 be 0.015~
0.060mm, relatively thin conducting solid electrolyte ceramic membrane improve the conductance of ion, with the high solid electrolyte of ionic conductivity
For material, formed using sol-gel processing or using dip-coating film sintering.Solid electrolyte layer is adopted in the present embodiment
With inorganic material, such as ceramics, the solid electrolyte non-refractory of organic material, this programme is not suitable for.
As shown in Fig. 2 solid electrolyte layer 52 is arranged on the outer layer of porous metallic layers 51 by the utility model, one is collectively formed
Individual tubular structure, it is internally formed the tube chamber 53 of a filling negative electrode active material molten sodium, the solid under the support of porous metallic layers
Relatively thin compact film can be made in dielectric substrate, and is easy to the negative pole sodium of encapsulation melting, and exterior surface area is big, electrical efficiency
It is high.Next to that consider the perishable solid electrolyte of negative pole sodium, the perishable metal of positive pole sulphur, the design arrangement of such ectonexine can be with
Avoid mutually directly contact.
A kind of ionic liquid is also adsorbed with the hole of porous metallic layers 51, the ionic liquid high temperature resistant (450 DEG C of ＞), energy
Quick conducts sodium ions, and be in a liquid state in battery operating temperature scope, chemical property it is stable.97 DEG C of the fusing point of sodium, sodium is to electrolysis
280 DEG C of the moistening temperature of matter earthenware, so traditional sodium sulphur normal battery operation temperature must be over 280 DEG C.It is but too high
Temperature accelerates the aging of battery material, reduces the life-span of battery.Composite negative pole tubular construction of the present utility model effectively solves
Determine the technical barrier, supporter of the porous metals as inorganic solid electrolyte, while significantly increasing body mechanical strength,
A kind of adsorbable ionic liquid of filling, ionic liquid have surface active function, had well with inorganic solid electrolyte surface
Compatibility, while the surface tension of molten metal sodium can be significantly reduced, effectively improve molten metal sodium and inorganic solid electrolyte
Matter interface compatibility, so as to reduce interface resistance, battery is set to work at a lower temperature.Sodium-sulphur battery in the present embodiment
250~300 DEG C of operating temperature
In the present embodiment, the preferred NaAlCl of sodium-sulphur battery ionic liquid4。
As shown in figure 3, the film layer that solid electrolyte layer 52 and porous metallic layers 51 are formed only passes through Na+, other any things
Matter includes electronics not by if solid electrolyte layer, because the factors such as battery vibrations, collision make it burst apart, composite negative pole pipe has
Self-healing function.The principle of self-healing function is as follows：
Molten metal sodium has larger surface tension, and molten sulfur has larger viscosity, when solid electrolyte layer bursts apart
When, the sodium of melting, sulphur slowly enter porous metallic layers hole under the retardance of porous metallic layers from porous metallic layers both sides, and
Vulcanized sodium solid particle is quickly generated in hole, resistance is formed until vulcanized sodium solid particle is fully filled with porous metallic layers hole
Untill plug, in the case where locally blocking, the negative pole still can maintain work, and accident will not further spread.Self-healing function, from source
Solve safety problem on head, have battery safety and substantially lifted.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical scheme of utility model is made, the guarantor that claims of the present utility model determine all should be fallen into
In the range of shield.
Claims (6)
1. a kind of multitube sodium-sulphur battery, including positive pole (1), positive pole shell (2), negative pole (3) and anode coat (4), it is described just
Pole（1）For the S/C composites containing active sulfur, the negative pole（3）Including liquid metal sodium, it is characterised in that the negative pole
(3) extended to by several Compound Negative pole pipes (5) of array arrangement in positive pole (1), the common negative pole cloth of several Compound Negative pole pipes
Put, the porous metallic layers (51) of the Compound Negative pole pipe (5) including internal layer and be attached to outer layer by porous metallic layers support
Solid electrolyte layer (52), the porous metallic layers are connected with anode coat (4), collectively as negative collector electrode, outside the positive pole
Shell (2) is in contact with the carbon material in positive pole collectively forms positive collector electrode.
2. multitube sodium-sulphur battery according to claim 1, it is characterised in that set between the positive pole (1) and negative pole (3)
Dead ring (6) is equipped with, the dead ring is closely connected with solid electrolyte layer.
3. multitube sodium-sulphur battery according to claim 1, it is characterised in that be adsorbed with the porous metallic layers (51)
Ionic liquid.
4. multitube sodium-sulphur battery according to claim 1, it is characterised in that the thickness of the porous metallic layers (51) is
0.2~1.5mm.
5. multitube sodium-sulphur battery according to claim 1, it is characterised in that porous gold in the porous metallic layers (51)
Category average pore size is 0.1~5um, and porosity is 50~80%.
6. multitube sodium-sulphur battery according to claim 1, it is characterised in that the thickness of the solid electrolyte layer (52)
For 0.015~0.060mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720079821.8U CN206727162U (en) | 2017-01-20 | 2017-01-20 | A kind of multitube sodium-sulphur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720079821.8U CN206727162U (en) | 2017-01-20 | 2017-01-20 | A kind of multitube sodium-sulphur battery |
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| Publication Number | Publication Date |
|---|---|
| CN206727162U true CN206727162U (en) | 2017-12-08 |
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| CN201720079821.8U Expired - Fee Related CN206727162U (en) | 2017-01-20 | 2017-01-20 | A kind of multitube sodium-sulphur battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890549A (en) * | 2019-12-06 | 2020-03-17 | 武汉大学 | Array type positive current collector for liquid metal battery |
-
2017
- 2017-01-20 CN CN201720079821.8U patent/CN206727162U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890549A (en) * | 2019-12-06 | 2020-03-17 | 武汉大学 | Array type positive current collector for liquid metal battery |
| CN110890549B (en) * | 2019-12-06 | 2023-03-24 | 武汉大学 | Array type positive current collector for liquid metal battery |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20200120 |