CN110518287A - Sodium ion electrolyte, secondary cell and preparation method and application - Google Patents
Sodium ion electrolyte, secondary cell and preparation method and application Download PDFInfo
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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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
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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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
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
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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
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
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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
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
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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
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- 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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Abstract
The invention discloses a kind of sodium ion electrolyte, secondary cell and preparation method and application.The electrolyte includes basic electrolyte and additive, and the basic electrolyte includes sodium salt and fire-retardant solvent；The fire-retardant solvent includes phosphate and fluoro-ether；The additive includes fluorochemical additive；The sodium salt is 1~2mol/L relative to the concentration of the basic electrolyte；The sodium salt is 1.5~3mol/L relative to the concentration of the phosphate；The volume ratio of the phosphate and the fluoro-ether is 1:1~2:1；The mass percent that the content of the additive accounts for the basic electrolyte is to be less than or equal to 5wt% greater than 0.The sodium-ion battery of electrolyte preparation of the invention has thermal stability good, can form stable SEI film and react between impeded electrode and electrolyte, have with using carbonic ester as the comparable charge-discharge performance of the electrolyte of solvent, manufacturing cost is low.
Description
Technical field
The present invention relates to a kind of sodium ion electrolyte, secondary cell and preparation method and application.
Background technique
In recent years, since sodium is resourceful, cost is relatively low, and future can be applied in extensive energy storage, becomes present battery
The new hot spot of research.With application of the battery in mobile phone, computer, electric car and extensive energy storage, battery system safety
Problem becomes the emphasis of industry concern.Therefore, the safety issue of sodium ion electrolyte, the emphasis for also receiving researchers close
Note.
The thermal stability of electrolyte system and the low flammability of electrolyte solvent are to influence the principal element of battery security.
As it can be seen that thinking the safety of raising battery, the electrolyte system for developing high security is most effective measure.For example, battery is warm
Beginning out of control is the decomposition due to SEI film, thus cause reacting between electrode material and electrolyte and with binder it
Between reaction, these reactions are all related with electrolyte.The thermal stability and low flammability of electrolyte depend primarily in electrolyte
Solvent, salt and additive composition, it can from the use three of the selection of sodium salt, the selection of dicyandiamide solution and additive
The electrolyte system of high security is designed in direction.
Currently, this field electrolyte Conventional solvents are carbonate-based solvent, usually addition is hindered containing phosphorus type flame retardant, nitrogenous class
Agent and composite flame-retardant agent are fired to realize low flammability, but the fire retardant of high concentration is needed in electrolyte to realize low flammability.
However, high concentration of fire retardant can cause the problems such as mutually separation and the loss battery performance of electrolyte itself, even with height
Concentration salt can solve the above problems, but high salt concentration is not only at high cost, and electrolysis fluid viscosity is big, lead to flame retardant property and electrochemistry
The problem of can taking into account, it is difficult practical application.In the electrolyte that carbonic ester (PC) is solvent, the thermal stability of sodium salt are as follows:
NaClO4>NaPF6> NaTFSI, but thermal behavior of the different salts in different solvents is different.
It proposes a kind of electrolyte in Chinese patent CN103827416A to be used in lithium ion battery, with carbon in the electrolyte
Acid esters is solvent, with phosphazene compound, fluorated solvent and organophosphorus ester or organic bony acid esters for fire-retardant cosolvent or addition
Agent.But the discharge capacity of its electrolyte is unsatisfactory, and cycle performance of battery is poor.
It is proposed in Chinese patent CN2017104877213 using LiBOB as lithium salts, lactone and fluorinated ether are as solvent
Electrolyte in lithium ion battery.But lactone is also a kind of combustible solvent, and thermal stability is poor in use, is deposited
In security risk.
As it can be seen that in the prior art, select to add a large amount of fire retardants for the defect for overcoming carbonates electrolyte inflammable, but
Cause chemical property to decline again, such as by improve salinity solve the problems, such as low flammability and electrochemistry can take into account and
It is big to will lead to electrolysis fluid viscosity；Therefore, searching can overcome above-mentioned difficulties, and meet that electrolyte thermal stability is good, and surface SEI film is not
It easily decomposes, the electrolyte that can be reacted between impeded electrode and electrolyte is this field problem urgently to be resolved.
Summary of the invention
The present invention is practical, and the technical problem to be solved is that be the electrolyte of solvent to overcome carbonic ester in the prior art
Thermal stability is poor, SEI film easily decomposes, and can react between electrode and electrolyte, and a large amount of fire retardants, which are added, leads to electricity
The problem of chemical property declines provides a kind of sodium ion electrolyte, secondary cell and preparation method and application.With of the invention
Electrolyte preparation sodium-ion battery have thermal stability it is good, stable SEI film can be formed and between impeded electrode and electrolyte
It reacts, has with using carbonic ester as the comparable charge-discharge performance of the electrolyte of solvent, manufacturing cost is low.
Inventor's discovery uses phosphate and fluoro-ether as fire-retardant solvent, using fluorochemical additive, compared with low salt concn
Under conditions of, the electrolyte with desired electrochemical performance is prepared, electrochemical properties are suitable with carbonates electrolyte, and are electrolysed
Liquid is nonflammable；Meanwhile stable SEI film can be formed, it is chemically reacted between impeded electrode and electrolyte, there is thermostabilization
Property.The application electrolyte takes into account low flammability energy and thermal stability, is high safety type electrolyte.
The present invention solves above-mentioned technical problem by the following technical programs.
The present invention provides a kind of electrolyte comprising basic electrolyte and additive, the basic electrolyte include sodium
Salt and fire-retardant solvent；
The fire-retardant solvent includes phosphate and fluoro-ether；The additive includes fluorochemical additive；The sodium salt is opposite
In the basic electrolyte concentration be 1~2mol/L；The sodium salt is 1.5~3mol/ relative to the concentration of the phosphate
L；The volume ratio of the phosphate and the fluoro-ether is 1:1~2:1；The content of the additive accounts for the basic electrolyte
Mass percent is to be less than or equal to 5wt% greater than 0.
In the present invention, the sodium salt can be conventional for this field, preferably sodium hexafluoro phosphate and/or sodium perchlorate.
In the present invention, the phosphate is preferably trimethyl phosphate, triethyl phosphate, tricresyl phosphate, tricresyl phosphate
One of phenyl ester, methyl-phosphoric acid dimethyl ester and ethyl phosphonic acid diethylester are a variety of.
In the present invention, the trimethyl phosphate is preferably anhydrous grade trimethyl phosphate.
In the present invention, the fluoro-ether is preferably 1,1,2,2- tetra- fluoro ethyl -2,2,3,3- tetrafluoro propyl ethers, 1, and 1,2,
One of tetra- fluoro ethyl -2,2,2- trifluoroethyl ether of 2- and 2H- perfluor (5- methyl -3,6- dioxanonane) are a variety of.
In the present invention, the fluorochemical additive is preferably fluorinated ethylene carbonate.In the present invention, the sodium salt relative to
The concentration of the phosphate is preferably 2.25mol/L.
In the present invention, the sodium salt is preferably 1.5mol/L relative to the concentration of the basic electrolyte.
In the present invention, the volume ratio of the phosphate and the fluoro-ether is preferably 2:1.
In the present invention, the mass percent that the content of the additive accounts for the basic electrolyte is preferably 2wt%.
In preferred embodiment of the present invention, the electrolyte is by the sodium salt, the phosphate, the fluoro
Ether and additive composition.
The present invention also provides a kind of preparation methods of electrolyte comprising following step: the basis is electrolysed
Liquid and the additive are uniformly mixed.
In the present invention, preferably, the mixing carries out under an inert atmosphere.For example, the mixing can in glove box into
Row.
Wherein, the inert atmosphere is preferably argon gas.
The present invention also provides a kind of application of above-mentioned electrolyte in the secondary battery.
In the present invention, the secondary cell can be sodium rechargeable battery.
The present invention also provides a kind of secondary cell, electrolyte is above-mentioned electrolyte.
In the present invention, the positive electrode of the secondary cell can be conventional for this field, preferably layered metal oxide,
It is more preferably NaNi1/3Fe1/3Mn1/3O3(NFM)。
In the present invention, the negative electrode material of the secondary cell can be conventional for this field, preferably Carbon materials, more preferably
For hard carbon (HC).
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get each preferable reality of the present invention
Apply example.
The reagents and materials used in the present invention are commercially available.
The positive effect of the present invention is that:
Electrolyte of the invention has thermal stability and low flammability, using low concentration of salt, overcomes because big
Amount the drawbacks of causing electrolyte flame-retardant performance and electrochemistry that can take into account using fire retardant, have and be molten with carbonic ester
The comparable charge-discharge performance of the electrolyte of agent；And stable SEI film can be formed and reacted between impeded electrode and electrolyte,
The good thermal stability of electrolyte is a kind of highly-safe electrolyte；The sodium-ion battery prepared with electrolyte of the invention
With very high safety, and sodium is resourceful, and manufacturing cost is low in large-scale commercial process, is suitable for industrial metaplasia
It produces.
Detailed description of the invention
Fig. 1 is 1 electrolyte combustibility test comparison chart of the embodiment of the present invention 1 and comparative example.
Fig. 2 is the cycle performance using the NFM/Na battery of 1 electrolyte of the embodiment of the present invention 1, embodiment 2 and comparative example.
Fig. 3 is the first circle charge and discharge using the NFM/Na battery of 1 electrolyte of the embodiment of the present invention 1, embodiment 2 and comparative example
Curve.
Fig. 4 is following using the NFM/Na battery of the embodiment of the present invention 3,4 electrolyte of embodiment 4, comparative example 3 and comparative example
Ring performance.
Fig. 5 is the first circle charging and discharging curve using 6 electrolyte HC/Na battery of the embodiment of the present invention 1 and comparative example.
Fig. 6 is the first circle charging and discharging curve using 5 electrolyte HC/Na battery of the embodiment of the present invention 5 and comparative example.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, or according to quotient
The selection of product specification.
In the following example and comparative example, the preparation method of electrolyte includes the following steps, by the basic electrolyte and
The additive is uniformly mixed.All be blended in the glove box full of argon gas carries out.
Examples 1 to 6 and comparative example 1~7
Each component is as shown in table 1 in the electrolyte that Examples 1 to 6 and comparative example 1~7 are prepared, the content of each component
As shown in table 2.
The each component of 1 electrolyte of table
The content of each component in 2 electrolyte of table
Wherein, phosphate used in this application and fluoro-ether are replaced using traditional carbonate-based solvent in comparative example 1, visited
Its electrochemical properties of rope and firing resistance；Electrification when explored in comparative example 2-7 without using additive fluorinated ethylene carbonate
Learn property.
Effect example 1
The evaluation method of battery performance is carried out according to professional standard in the present invention.
Charge-discharge performance test is carried out using the secondary cell of electrolyte of the present invention.Battery is first in low current density 0.1C
Lower carry out charge and discharge, then carry out loop test under 1C current density.
It can be obtained according to Fig. 1, the electrolyte that the embodiment of the present invention 1 is prepared is under the conditions of the fire source of sufficient time, tool
There is non-flammable characteristic.Under similarity condition, the carbonates electrolyte that comparative example 1 is prepared can continue after leaving fire source
Burning has been burnt until electrolyte.Thus, electrolyte of the invention has significant advantage in terms of the safety for promoting battery.
It can obtain according to fig. 2, electrolyte of the invention is applied to sodium-ion battery NaNi1/3Fe1/3Mn1/3O3(NFM) stratiform
In material, the discharge capacity of electrolyte battery of the present invention is higher than carbonates conventional electrolysis liquid, after the circle of circulation 100, embodiment 1
Capacity retention ratio with embodiment 2 is respectively 79% and 83%, and the capacity retention ratio of comparative example 1 is 81%, is shown of the invention
Electrolyte and comparative example 1 have substantially comparable capacity retention ratio, and wherein the battery of embodiment 2 has better stable circulation
Property.
Embodiment 1 and embodiment 2 the results show that electrolyte of the invention is applied to sodium-ion battery NaNi in Fig. 31/3Fe1/3Mn1/3O3(NFM) in stratified material, the solvent of electrolyte is by trimethyl phosphate and 1,1,2,2- tetra- fluoro ethyl -2,2, and 3,
3- tetrafluoro propyl ether composition, and trimethyl phosphate and 1, the volume ratio of 1,2,2- tetra- fluoro ethyl -2,2,3,3- tetrafluoro propyl ethers are
The specific discharge capacity of 2:1 ratio 1:1 is more preferable；The electrolyte first charge-discharge capacity that embodiment 1 is prepared are as follows: 130.3mAh/g
(filling)/127.8mAh/g (is put), and coulombic efficiency is 98.1% for the first time；The electrolyte first charge-discharge that embodiment 2 is prepared holds
Amount is 135.5mAh/g (filling)/129.9mAh/g (putting), and first charge discharge efficiency coulomb is 95.87%；The tradition that comparative example 1 is prepared
Carbonic ester electrolyte first charge-discharge capacity are as follows: 133.5mAh/g (filling)/122.5mAh/g (putting), coulombic efficiency is for the first time
91.72%.As it can be seen that the first charge discharge efficiency of electrolyte produced by the present invention is suitable with conventional carbonate class electrolyte, while battery has
There is good cyclical stability.Thus, electrolyte of the invention can not only promote the safety of battery, meanwhile, it shows good
Good chemical property.
It can be obtained according to Fig. 4, the electrolyte of difference salinity made from embodiment 3, embodiment 4, comparative example 3 and comparative example 4
Applied to sodium-ion battery NaNi1/3Fe1/3Mn1/3O3(NFM) cycle performance in layered cathode material.As seen from the figure, work as phosphorus
When the volume ratio of 3,3- tetrafluoro propyl ethers is 2:1, fluoro ethylene carbonate is added in sour trimethyl and 1,1,2,2- tetra- fluoro ethyl -2,2
Ester (FEC) additive can effectively improve the stability of electrolyte, the capacity retention ratio of battery be improved, especially in sodium salt concentration
In lower situation.Hexafluorophosphoric acid na concn is 1mol/L relative to the concentration of basic electrolyte in comparative example 3, it may be possible to because
Salinity is low, and solvent constantly decomposes, and stable interface cannot be formed in Na negative side, serious dendrite phenomenon occurs, finally
Dendrite pierces through diaphragm, guiding discharge capacity dramatic decrease.After fluorinated ethylene carbonate is added in embodiment 3, capacity retention ratio is bright
It is aobvious to improve.And in comparative example 4 sodium hexafluoro phosphate relative to basic electrolyte concentration be 2mol/L, conductivity is low, although not going out
The phenomenon that existing solvent constantly decomposes, but when the electrolyte of comparative example 4 is applied to sodium-ion battery hard carbon (HC) negative electrode material, with
Embodiment 4 significantly reduces (specific data are shown in effect example 2) compared to first circle coulombic efficiency, comprehensively considers, the electrolysis of comparative example 4
The chemical property of liquid is poor.
Fig. 5 is applied to the first circle in sodium-ion battery hard carbon (HC) negative electrode material for the electrolyte of embodiment 1 and comparative example 6
Charge and discharge electrical image.There is discharge platform in the discharge curve of first circle, in 0.25V or so in the battery that comparative example 6 is filled, this
It is because negative terminal surface cannot form stable SEI film, the solvent molecule of electrolyte is constantly caused by pole piece decomposition.With
On the contrary, FEC additive is added after, it is that 0.7V or so is decomposed in current potential as a kind of effective cathode film formation agent, to press down
The reduction of the solvent molecule of electrolyte is made.
Fig. 6 is applied to the first circle in sodium-ion battery hard carbon (HC) negative electrode material for the electrolyte of embodiment 5 and comparative example 5
Charge and discharge electrical image.As can be seen from Fig. 6, sodium perchlorate and sodium hexafluoro phosphate are applied to have in sodium-ion battery electrolyte as sodium salt
Same performance, as addition FEC additive when, there is discharge platform in 0.25V or so in the first circle that discharges, and FEC is added
The abolition of plateau after additive, i.e. FEC additive preferentially form film in electrode surface, can effectively inhibit the decomposition of solvent molecule.
Effect example 2
Charge-discharge performance test is carried out to the secondary cell using 1-6 of the embodiment of the present invention and comparative example 1-7 electrolyte to see
Table 1.The experimental results showed that hard carbon (HC)/Na cathode first circle coulombic efficiency significantly reduces when not adding FEC in electrolyte,
Chemical property is relatively poor, and is unworthy being further carried out specific aim measure of merit, therefore, does not test all comparative examples
Electrochemical parameter of the middle electrolyte in hard carbon (HC)/Na cathode, " -- " represents non-test data in table 3.
Table 3
Wherein, additive is not added compared with the electrolyte of embodiment 4 for the electrolyte of comparative example 4, when the electrolysis of comparative example 4
When liquid is applied to sodium-ion battery hard carbon (HC) negative electrode material, first circle coulombic efficiency is significantly reduced compared with Example 4, electrochemistry
Performance is poor.
The electrolyte of comparative example 6 is applied in sodium-ion battery hard carbon (HC) negative electrode material, although its first circle charge and discharge capacitor
Amount is high, but it discharge platform (as shown in Figure 5) occurs in 0.25V or so, is the solvent molecule of electrolyte constantly in pole
Caused by piece surface is decomposed, and then cause cycle performance poor.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of electrolyte, which is characterized in that it includes basic electrolyte and additive, the basic electrolyte include sodium salt and
Fire-retardant solvent；The fire-retardant solvent includes phosphate and fluoro-ether；The additive includes fluorochemical additive；The sodium salt is opposite
In the basic electrolyte concentration be 1~2mol/L；The sodium salt is 1.5~3mol/ relative to the concentration of the phosphate
L；The volume ratio of the phosphate and the fluoro-ether is 1:1~2:1；The content of the additive accounts for the basic electrolyte
Mass percent is to be less than or equal to 5wt% greater than 0.
2. electrolyte as described in claim 1, which is characterized in that the sodium salt is sodium hexafluoro phosphate and/or sodium perchlorate；
And/or the phosphate is trimethyl phosphate, triethyl phosphate, tricresyl phosphate, triphenyl phosphate, methyl acid phosphate
One of dimethyl ester and ethyl phosphonic acid diethylester are a variety of；
And/or the fluoro-ether be 1,1,2,2- tetra- fluoro ethyl -2,2,3,3- tetrafluoro propyl ethers, 1,1,2,2- tetra- fluoro ethyl -2,
One of 2,2- trifluoroethyl ether and 2H- perfluor (5- methyl -3,6- dioxanonane) are a variety of；
And/or the fluorochemical additive is fluorinated ethylene carbonate；
And/or the sodium salt is 2.25mol/L relative to the concentration of the phosphate；
And/or the sodium salt is 1.5mol/L relative to the concentration of the basic electrolyte；
And/or the volume ratio of the phosphate and the fluoro-ether is 2:1；
And/or it is 2wt% that the content of the additive, which accounts for the mass percent of the basic electrolyte,.
3. electrolyte as claimed in claim 2, which is characterized in that the trimethyl phosphate is anhydrous grade trimethyl phosphate.
4. electrolyte as described in claim 1, which is characterized in that it is by the sodium salt, the phosphate, the fluorine
For ether and the additive composition.
5. a kind of preparation method of electrolyte according to any one of claims 1-4 comprising following step: by the basis
Electrolyte and the additive are uniformly mixed.
6. preparation method as claimed in claim 5, which is characterized in that the mixing carries out under an inert atmosphere, and described is lazy
Property atmosphere is preferably argon gas.
7. a kind of application of electrolyte according to any one of claims 1-4 in the secondary battery.
8. the use as claimed in claim 7, which is characterized in that the secondary cell is sodium rechargeable battery.
9. a kind of secondary cell, which is characterized in that its electrolyte is electrolyte according to any one of claims 1-4.
10. secondary cell as claimed in claim 9, which is characterized in that the positive electrode of the secondary cell is stratiform gold
Belong to oxide, preferably NaNi1/3Fe1/3Mn1/3O3；
And/or the negative electrode material of the secondary cell is Carbon materials, preferably hard carbon.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910594885.5A CN110518287B (en) | 2019-07-03 | 2019-07-03 | Sodium ion electrolyte, secondary battery, preparation method and application |
| US17/286,821 US20210399341A1 (en) | 2018-10-29 | 2019-10-29 | Electrolyte, Additive Thereof, Secondary Cell, And Application Thereof |
| PCT/CN2019/113924 WO2020088436A1 (en) | 2018-10-29 | 2019-10-29 | Electrolyte, additive thereof, secondary cell, and application thereof |
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| CN201910594885.5A CN110518287B (en) | 2019-07-03 | 2019-07-03 | Sodium ion electrolyte, secondary battery, preparation method and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082140A (en) * | 2019-12-19 | 2020-04-28 | 东莞市坤乾新能源科技有限公司 | Novel sodium ion battery electrolyte and sodium battery |
| CN113113670A (en) * | 2021-04-09 | 2021-07-13 | 浙江大学山东工业技术研究院 | Non-combustible lithium metal battery electrolyte and preparation method thereof, lithium metal battery and preparation method thereof |
| CN114039095A (en) * | 2021-12-09 | 2022-02-11 | 河南省法恩莱特新能源科技有限公司 | Flame-retardant sodium-ion battery electrolyte |
| CN114464885A (en) * | 2022-02-16 | 2022-05-10 | 温州大学碳中和技术创新研究院 | Flame-retardant sodium-ion battery electrolyte and preparation method of safe sodium-ion battery |
| CN114566713A (en) * | 2022-03-08 | 2022-05-31 | 中国矿业大学 | Electrolyte, preparation method thereof and method for preparing sodium ion battery by using electrolyte |
| CN115347235A (en) * | 2022-07-25 | 2022-11-15 | 中南大学 | Sodium ion battery electrolyte and high-rate and stable-circulation sodium ion battery |
| CN115663287A (en) * | 2022-12-13 | 2023-01-31 | 湖南法恩莱特新能源科技有限公司 | High-pressure-resistant flame-retardant sodium ion electrolyte, preparation method thereof and sodium ion battery |
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| CN113113670A (en) * | 2021-04-09 | 2021-07-13 | 浙江大学山东工业技术研究院 | Non-combustible lithium metal battery electrolyte and preparation method thereof, lithium metal battery and preparation method thereof |
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| CN114464885A (en) * | 2022-02-16 | 2022-05-10 | 温州大学碳中和技术创新研究院 | Flame-retardant sodium-ion battery electrolyte and preparation method of safe sodium-ion battery |
| CN114566713A (en) * | 2022-03-08 | 2022-05-31 | 中国矿业大学 | Electrolyte, preparation method thereof and method for preparing sodium ion battery by using electrolyte |
| CN114566713B (en) * | 2022-03-08 | 2023-09-29 | 中国矿业大学 | Electrolyte, preparation method thereof and method for preparing sodium ion battery by using electrolyte |
| CN115347235A (en) * | 2022-07-25 | 2022-11-15 | 中南大学 | Sodium ion battery electrolyte and high-rate and stable-circulation sodium ion battery |
| CN115663287A (en) * | 2022-12-13 | 2023-01-31 | 湖南法恩莱特新能源科技有限公司 | High-pressure-resistant flame-retardant sodium ion electrolyte, preparation method thereof and sodium ion battery |
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Effective date of registration: 20230105 Address after: 312366 2nd floor, building B, kechuangyuan, 398 mahuan Road, Binhai New Town, Shaoxing City, Zhejiang Province Patentee after: Zhejiang sodium innovation energy Co.,Ltd. Address before: Room 6108, 6 storeys, Building 5, No. 951 Jianchuan Road, Minhang District, Shanghai, 200240 Patentee before: SHANGHAI ZIJIAN CHEMICAL TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN CAPCHEM TECHNOLOGY Co.,Ltd. |