CN109873206A - Lithium-ion battery electrolytes and lithium ion battery - Google Patents
Lithium-ion battery electrolytes and lithium ion battery Download PDFInfo
- Publication number
- CN109873206A CN109873206A CN201910305490.9A CN201910305490A CN109873206A CN 109873206 A CN109873206 A CN 109873206A CN 201910305490 A CN201910305490 A CN 201910305490A CN 109873206 A CN109873206 A CN 109873206A
- Authority
- CN
- China
- Prior art keywords
- lithium
- ion battery
- electrolyte
- additive
- mass ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
Abstract
It includes lithium salts I, functional additive and organic solvent that the present invention, which provides a kind of lithium-ion battery electrolytes and lithium ion battery, lithium-ion battery electrolytes,；The functional additive includes anode protection additive and cathode film formation additive；The anode protection additive includes methane-disulfonic acid methylene ester and lithium salts II；The cathode film formation additive includes 1,3- propene sultone and sulfuric acid vinyl ester.Lithium-ion battery electrolytes provided by the invention can improve the storage performance of the nickelic positive electrode lithium ion battery of ternary at high temperature.
Description
Technical field
The present invention relates to technical field of lithium ion, in particular to one kind can apply to the nickelic anode material of lithium of ternary from
The electrolyte of sub- battery.
Background technique
Lithium ion battery have energy density height, output power, voltage height, self discharge is small, operating temperature range is wide, nothing
Memory effect and advantages of environment protection have been applied to the fields such as electric vehicle, rail traffic, extensive energy storage and aerospace.
With the promotion demand of lithium ion battery energy density, tertiary cathode material is in lithium ion battery especially in power
In battery using more and more extensive.High-nickel material is also gradually increased with the performance of its gram volume of the raising of nickel content, but high
Easily there is situations such as bad high-temperature storage performance, poor circulation, flatulence in battery applications in nickel material structural instability.
Thus, develop a lithium ion battery that can promote the nickelic positive electrode of ternary (or nickelic tertiary cathode material)
High temperature storage etc. performance functional electrolyte it is extremely urgent.
Summary of the invention
In view of this, the present invention provides a kind of lithium-ion battery electrolytes, which is applied to ternary
In nickelic positive electrode lithium ion battery, the storage performance of the nickelic positive electrode lithium ion battery of ternary at high temperature can be improved
Deng.
The present invention is to reach its purpose, is provided the following technical solutions:
The present invention provides a kind of lithium-ion battery electrolytes, and the electrolyte includes lithium salts I, functional additive and organic
Solvent；The functional additive includes anode protection additive and cathode film formation additive；The anode protection additive packet
Include methane-disulfonic acid methylene ester and lithium salts II；The cathode film formation additive includes 1,3- propene sultone and sulfuric acid ethylene
Ester.
In the present invention, by methane-disulfonic acid methylene ester and lithium salts II combination as anode protection additive, 1,3- propylene
Sultones and sulfuric acid vinyl ester combination are used as cathode film formation additive, and the function performance additive for combining formation passes through each component
Coordinated in the electrolyte applied to nickelic tertiary cathode material battery, can effectively improve the lithium of the nickelic positive electrode of ternary
The high-temperature storage performance of ion battery.Electrolyte of the invention is applied in the nickelic positive electrode lithium ion battery of ternary, first
Alkane disulfonic acid methylene ester is decomposed to form positive protective film in positive electrode surface, can inhibit the dissolution of transition metal；Lithium salts II can be just
Pole surface absorption, inhibits the decomposition of lithium salts I, reduces the content of LiF in positive protective film, improves positive interface and leads lithium performance, drops
Low interface impedance improves the high temperature cyclic performance of battery；1,3 propene sultone and sulfuric acid vinyl ester are all sulfur-containing additive,
It decomposes the SEI film generated and contains S-O component, can modify and improve SEI film, the former decomposition product is mainly Sulfonic Lithium class chemical combination
Object can improve the high-temperature storage performance of battery, but the SEI membrane impedance formed is higher, the SEI film component master that sulfuric acid vinyl ester is formed
It to be lithium sulfate class compound, impedance is lower, and the two mutually cooperates with the high-temperature storage performance for improving battery.
In the preferred embodiment of the invention, it is based on electrolyte gross mass, the mass ratio of the anode protection additive is
1.5%-4.5%, preferably 1.5%-2.5%；Wherein mass ratio of the methane-disulfonic acid methylene ester in the electrolyte
It is >=0.5% and≤1.5%, preferably > 0.5% and≤1.5% (such as 0.6%, 0.8%, 1.0%, 1.3%, 1.5% etc.),
Such as 1%-1.5% is arranged in pairs or groups using the methane-disulfonic acid methylene ester of preferable amount with lithium salts II, and the height for improving battery is conducive to
Warm cycle performance, while there is more preferably high temperature storing stabilization；Methane-disulfonic acid methylene ester is decomposed to form just in positive electrode surface
Pole protective film can reduce lithium fluoride point content, improve positive interface and lead lithium performance, while can inhibit LiPF6And electrolyte is just
The decomposition at pole interface.In some preferred embodiments, it is based on electrolyte gross mass, the mass ratio of the anode protection additive
Example is 1.5%-2.5%；Mass ratio of the methane-disulfonic acid methylene ester in the electrolyte be > 0.5% and≤
1.5%, it is steady conducive to the high temperature storage for improving the nickelic positive electrode lithium ion battery of ternary using the electrolyte of preferred ingredient dosage
Qualitative and high temperature cyclic performance.
In the present invention, the mass ratio of lithium salts II in the electrolytic solution is preferably, but not limited to the range of 0.5%-1.5%
Interior (such as 0.5%, 1.0%, 1.3%, 1.5%), or can be 1.0-1.5%.It is preferred that controlling the dosage of lithium salts II at this
Range combines as anode protection additive with methane-disulfonic acid methylene ester, help to obtain preferable battery high-temperature storage
Energy.
In the present invention, the anode protect in additive can also optionally add and (add or do not add) butyl borate,
One of three (trimethyl silicon substrate) borates, trimethyl phosphate, (trimethyl silane) phosphate, succinonitrile, adiponitrile or two
Kind or more combination.
" I ", " II " in lithium salts I and lithium salts II are merely for convenience of describing and distinguish, and lithium salts I and lithium salts II are different
Lithium salts.Lithium salts II be preferably selected from but be not limited to lithium hexafluoro phosphate, LiBF4, di-oxalate lithium borate, difluorine oxalic acid boracic acid lithium,
The combination of one or more of double fluorine sulfimide lithiums, double trifluoromethanesulfonimide lithiums, difluorophosphate；The lithium
Salt II is more preferably difluorophosphate, and difluorophosphate together with methane-disulfonic acid methylene ester as anode protection by adding
Agent is conducive to reduce battery impedance, improves battery high-temperature storage performance, promotes battery high-temperature behavior.
In the preferred embodiment of the invention, it is based on electrolyte gross mass, the mass ratio of the cathode film formation additive is
1.0-3.5% (such as 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5% etc.), preferably 1.5-3.5%；The 1,3-
Mass ratio of the propene sultone in the electrolyte is 0.1%-1.5% (such as 0.1%, 0.5%, 1.0%, 1.5%
Deng), preferably 0.5-1.5%；It is arranged in pairs or groups using 1, the 3- propene sultone and sulfuric acid vinyl ester of preferable amount, 1,3- propylene
Sultones can form good SEI film in negative terminal surface, conducive to the high-temperature storage performance of battery is improved, and can obtain preferably
High temperature cyclic performance；And if 1,3- propene sultone additive amount is too many, such as can lead more than 1.5% especially more than 2.5%
It causes cathode film formation impedance to increase, internal resistance after battery storage is caused to increase and recycle deterioration.
In the preferred embodiment of the invention, the mass ratio of the sulfuric acid vinyl ester in the electrolytic solution is 0.5%-2%, more
Preferably > 0.5% and≤2%, such as 1.0%, 1.5%, 2.0%, it, can be with 1,3- using the sulfuric acid vinyl ester of preferable amount
Propene sultone preferably plays combination effect, is conducive to improve battery high-temperature storage performance.
In some preferred embodiments, it is based on electrolyte gross mass, the mass ratio of the cathode film formation additive is
1.5-3.5%；Mass ratio of the 1,3- propene sultone in the electrolyte is 0.5-1.5%；The sulfuric acid second
The mass ratio of enester in the electrolytic solution is > 0.5% and≤2% uses the electrolyte of preferred ingredient dosage, is conducive to improve ternary
The high-temperature storage performance and high temperature cyclic performance of nickelic positive electrode lithium ion battery.
In the present invention, vinylene carbonate can be also optionally added and (add or do not add) in the cathode film formation additive
The combination of one or more of ester, fluorinated ethylene carbonate, 1,3- propane sultone.
In some preferred embodiments of the invention, the gross mass based on electrolyte, the quality of the functional additive
Percentage is 2.5%-8%, preferably 3-8%, such as 3%, 4%, 5%, 6%, 7% or 8% etc..Add according to optimum ratio
Add, is conducive to obtain the preferable battery of comprehensive performance.
In some preferred embodiments of the invention, mass percentage of the lithium salts I in the electrolyte is 11-
16%, such as 11%, 12%, 13%, 14%, 15% or 16% etc., added according to optimum ratio, be conducive to obtain comprehensive performance compared with
Good battery.Preferably, the lithium salts I is selected from but not limited to lithium hexafluoro phosphate, LiBF4, di-oxalate lithium borate, difluoro
One or more of Lithium bis (oxalate) borate, double fluorine sulfimide lithiums, double trifluoromethanesulfonimide lithiums, difluorophosphate
Combination, and lithium salts I is different lithium salts from lithium salts II；It is further preferred that the lithium salts I is lithium hexafluoro phosphate, it is conducive to obtain
The good battery of comprehensive performance.
In some better embodiments, it is based on electrolyte gross mass, the electrolyte includes each of following mass percent
Component:
Lithium salts I 11-16%；
Anode protection additive 1.5%-4.5%, preferably 1.5-2.5%；
Cathode film formation additive 1.0-3.5%, preferably 1.5-3.5%；
Organic solvent surplus (such as 84-89%, such as 84%, 85%, 86%, 87%, 88% or 89% etc.)；
Wherein, the positive mass ratio for protecting the methane-disulfonic acid methylene ester contained in additive in the electrolyte is
> 0.5% and≤1.5%；Mass ratio of the 1,3- propene sultone that cathode film formation additive contains in the electrolyte
For 0.1%-1.5%, preferably 0.5%-1.5%.Using the electrolyte of optimization formula, it is conducive to obtain high-temperature storage performance and high temperature
The nickelic positive electrode lithium ion battery of the good ternary of cycle performance, battery comprehensive performance are preferable.
In lithium-ion battery electrolytes of the invention, the organic solvent used can choose solvent commonly used in the art
Composition, such as the mixing composition of selection carbonate solvent.Specifically for example selected from ethylene carbonate, propene carbonate, carbonic acid diformazan
The combination of one or more of ester, methyl ethyl carbonate, diethyl carbonate；For example, the organic solvent is by ethylene carbonate
Ester, propene carbonate, dimethyl carbonate, methyl ethyl carbonate composition, or by ethylene carbonate, propene carbonate, diethyl carbonate,
Methyl ethyl carbonate composition, or be made of ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, or by ethylene carbonate, carbonic acid first
Ethyl ester, diethyl carbonate composition.
Preferably, the organic solvent is made of ethylene carbonate, methyl ethyl carbonate, diethyl carbonate, three's mass ratio
Preferably 20-30:30-40:10-20, specific such as 29:38:19；Using preferred organic molten in electrolyte of the invention
Agent is conducive to obtain the preferable battery of comprehensive performance.
Another aspect of the present invention also provides a kind of lithium ion battery, and the electrolyte in the lithium ion battery is described above
Electrolyte, the preferably described lithium ion battery be the nickelic positive electrode lithium ion battery of ternary.The nickelic positive electrode of ternary
The charge cutoff voltage of lithium ion battery is preferably greater than to be equal to 4.2V and be less than or equal to 4.3V.The nickelic anode material of lithium of ternary from
The basic structure and material of sub- battery can be used the corresponding lithium ion battery structure and material of this field, and specific preparation process can be with
Using this field prior art, this is not repeated, the present invention, which mainly improves, is electrolyte therein.Lithium ion battery is main
Including anode, cathode, diaphragm and electrolyte, the nickelic positive electrode of ternary in the nickelic positive electrode lithium ion battery of ternary is for example
For LiNi1-x-yCoxMnyO2Positive electrode, wherein 1-x-y>0.5,0<x<1,0<y<1 are specific such as LiNi0.8Co0.1Mn0.1O2Deng.
For the active material of anode for example including conductive agent, binder and solvent, diaphragm is, for example, polyethene microporous membrane, polypropylene microporous
At least one of film, ceramic-coated separator, composite membrane etc..
The nickelic positive electrode lithium ion battery of ternary containing electrolyte of the present invention has good high-temperature behavior, high temperature
Storage stability is good, and the cycle performance under high temperature is good.
Technical solution provided by the invention has the following beneficial effects:
Electrolyte provided by the invention protects additive using methane-disulfonic acid methylene ester and lithium salts II combination as anode,
It is used as cathode film formation additive with 1,3- propene sultone and sulfuric acid vinyl ester combination, each component coordinated is applied to height
In the electrolyte of nickel tertiary cathode material battery, the high temperature storage of the lithium ion battery of the nickelic positive electrode of ternary can effectively improve
Performance, high temperature cyclic performance are good.
Detailed description of the invention
Fig. 1 is the 1C charge-discharge cycle test chart of embodiment 1-2, comparative example 1-3 at 45 DEG C of high temperature.
Specific embodiment
For a better understanding of the technical solution of the present invention, below with reference to the embodiment content that the present invention is further explained,
But the contents of the present invention are not limited only to following embodiment.
Reagent used in each embodiment and comparative example or material are conventional commercial product.
Embodiment 1
(1) the nickelic positive electrode lithium ion battery electrolyte preparation of ternary:
In moisture < 1ppm glove box (model Universal (1800/750/900)), by ethylene carbonate, carbonic acid
29:38:19 is uniformly mixed by mass percentage for methyl ethyl ester, diethyl carbonate.Then, it is added and accounts for the six of electrolyte gross mass 14%
Lithium fluophosphate dissolution is complete.Add following functional additive: anode protection additive methane-disulfonic acid methylene ester and difluoro
Lithium phosphate, cathode film formation additive 1,3- propene sultone and sulfuric acid vinyl ester；
Wherein the additive amount of methane-disulfonic acid methylene ester accounts for the 1% of electrolyte gross mass, and the additive amount of difluorophosphate accounts for
The 1% of electrolyte gross mass；
The additive amount of 1,3- propene sultone accounts for the 0.5% of electrolyte gross mass, and the additive amount of sulfuric acid vinyl ester accounts for electricity
Solve the 1.5% of liquid gross mass.Electrolyte sample is obtained after mixing evenly.
(2) anode preparation
By the nickelic positive electrode LiNi of ternary0.8Co0.1Mn0.1O2, carbon nanotube, carbon black, poly- two vinylidene in mass ratio
Example 97.2:0.9:0.8:1.1 is dissolved in N-Methyl pyrrolidone, and vacuum stirring is uniformly mixed and slurry is made, and is evenly applied to 18 μ
On the aluminium foil of m, roller die cutting piece after baking.
(3) prepared by cathode
Graphite, carbon black, carboxymethyl cellulose, butadiene-styrene rubber example 96.4:0.9:1:1.5 in mass ratio are dissolved in distilled water
In, it is uniformly mixed and slurry is made, be evenly applied on 8 μm of copper foil, roller die cutting piece after baking.
(4) prepared by battery
Positive plate made from above-mentioned steps, negative electrode tab are stacked as with a thickness of 20 μm of PE diaphragm with Z-shaped lamination process
Naked battery core, is put into aluminum plastic membrane shell, and electrolyte, encapsulation are injected after vacuum bakeout, is then melted into again, aging, two
Soft-package battery is made in envelope degasification, partial volume.
Battery is tested:
(a) 45 DEG C of loop tests of high temperature
The battery that embodiment 1 is prepared is at 45 DEG C of high temperature, and with 1C constant-current constant-voltage charging to 4.2V, cut-off current is
0.05C, then with 1C constant-current discharge to 2.8V, charge and discharge cycles test is carried out, record loop-around data.
(b) 55 DEG C of storage tests of high temperature
The battery that embodiment 1 prepares is placed in 55 DEG C of hot environment, after shelving 7 days test battery thickness,
Internal resistance and capacity restoration rate etc..
Embodiment 2
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that on the basis of embodiment 1
The upper difluorine oxalic acid boracic acid lithium for increasing by 1% (being based on electrolyte gross mass).
Embodiment 3
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that the functional addition
Anode protection additive in agent improves the additive amount of methane-disulfonic acid methylene ester to 1.5% (based on electrolyte gross mass).
Embodiment 4
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that the functional addition
The additive amount of difluorophosphate is reduced to 0.5% (based on electrolyte gross mass) by the anode protection additive in agent.
Embodiment 5
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that the functional addition
The amount of 1,3- propene sultone is reduced to 0.3% (based on electrolyte gross mass) by the cathode film formation additive in agent.
Embodiment 6
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that the functional addition
The amount of sulfuric acid vinyl ester is reduced to 0.5% (based on electrolyte gross mass) by the cathode film formation additive in agent.
Comparative example 1
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that by functional additive
In the additive amount of anode protection additive methane-disulfonic acid methylene ester be reduced to 0.5% (based on electrolyte gross mass).
Comparative example 2
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that by functional additive
In the additive amount of cathode film formation additive 1,3- propene sultone increase and (be based on electrolyte gross mass) for 2.5%.
Comparative example 3
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that in functional additive
Anode protection additive difluorophosphate is not added.
Comparative example 4
Electrolyte quota process and cell manufacturing process are substantially same as Example 1, the difference is that in functional additive
Cathode film formation additive sulfur vinyl acetate is not added.
Battery obtained by above-described embodiment 1-6 and comparative example 1-4 carries out 55 DEG C of storage tests of high temperature, and (test method is referring to implementation
Example 1), test result is referring to the following table 1:
Lower 55 DEG C of storages of high temperature, the 7 days test datas of the full electricity of table 1
In terms of the data of table 1, the nickelic positive electrode lithium ion battery of ternary obtained by 1-6 of the embodiment of the present invention is compared to comparison
Example 3-4, there is preferable high-temperature storage performance；And the nickelic positive electrode lithium ion battery of ternary of embodiment 1-4 therein
High-temperature storage performance is more excellent.Cathode film formation additive sulfur vinyl acetate is added without in comparative example 4, compared to embodiment 1-6, electricity
The high-temperature storage performance in pond deteriorates, and high temperature internal resistance increases, and illustrates in formula system of the invention, with 1,3- propene sulfonic acid
Collectively as cathode film formation additive, having reduces battery impedance, improves the charge-discharge performance of battery for lactone and sulfuric acid vinyl ester
Effect.
Battery obtained by embodiment 1-2 and comparative example 1-3 carries out 45 DEG C of loop tests of high temperature (test method is referring to embodiment 1)
Comparison, as a result referring to Fig. 1.In terms of the loop-around data of Fig. 1, comparative example 1 is compared with embodiment 1, anode protection addition in comparative example 1
Agent methane-disulfonic acid methylene ester content is reduced to 0.5%, and 45 DEG C of 1C charge-discharge cycle test capacity conservation rates of high temperature reduce, and illustrates first
Alkane disulfonic acid methylene ester is conducive to improve the high temperature cyclic performance of battery, is decomposed to form positive protective film in positive electrode surface, drops
Less fluorinated lithium divides content, improves positive interface and leads lithium performance, while can inhibit LiPF6And electrolyte is in the decomposition at positive interface.
Inventors have found that comparative example 1 is compared to embodiment 1-2 when progress high-temperature storage performance detection, the high-temperature storage performance of battery is inferior
Color is in embodiment 1-2.
From fig. 1, comparative example 2 is compared with embodiment 1, cathode film formation additive 1 in comparative example 2, in 3- propene sulfonic acid
The additive amount of ester increases to 2.5%, and 45 DEG C of circulation volume conservation rates of high temperature reduce, and illustrates that 1,3- propene sultone content increases
Add, cathode film formation impedance increases, and circulating battery is caused to deteriorate.Inventors have found that comparative example 2 when progress high-temperature storage performance detection
Compared to embodiment 1-2, the high-temperature storage performance of battery is obviously deteriorated；Compared with Example 1, lower 55 DEG C of storages 7 of high temperature of full electricity
High temperature internal resistance increases more more obvious than (%) amplification after it, has reached 16.4%.
From fig. 1, comparative example 3 is compared with embodiment 1, anode protection additive difluorophosphoric acid is added without in comparative example 3
Lithium, cycle performance of battery are all deteriorated, and illustrating that anode protection additive difluorophosphate has reduces battery impedance, improve electricity
The effect of pond high-temperature behavior.Inventors have found that comparative example 3 is compared to embodiment 1-2, battery when progress high-temperature storage performance detection
High-temperature storage performance be significantly deteriorated.
It will be understood by those skilled in the art that under the introduction of this specification, the present invention can be made some modifications or
Adjustment.These modifications or adjustment should also be as within the scope of the claims in the present invention.
Claims (15)
1. a kind of lithium-ion battery electrolytes, the electrolyte includes lithium salts I, functional additive and organic solvent；Its feature
It is,
The functional additive includes anode protection additive and cathode film formation additive；
The anode protection additive includes methane-disulfonic acid methylene ester and lithium salts II；
The cathode film formation additive includes 1,3- propene sultone and sulfuric acid vinyl ester.
2. lithium-ion battery electrolytes according to claim 1, which is characterized in that
Based on electrolyte gross mass, the mass ratio of the anode protection additive is 1.5%-4.5%；
Mass ratio of the methane-disulfonic acid methylene ester in the electrolyte is >=0.5% and≤1.5%.
3. lithium-ion battery electrolytes according to claim 2, which is characterized in that
Based on electrolyte gross mass, the mass ratio of the anode protection additive is 1.5%-2.5%；
Mass ratio of the methane-disulfonic acid methylene ester in the electrolyte is > 0.5% and≤1.5%.
4. lithium-ion battery electrolytes according to claim 2, which is characterized in that be based on electrolyte gross mass, the lithium
The mass ratio of salt II in the electrolytic solution is 0.5%-1.5%；
It optionally, further include butyl borate, three (trimethyl silicon substrate) borates, tripotassium phosphate in the anode protection additive
The combination of one or more of ester, (trimethyl silane) phosphate, succinonitrile, adiponitrile.
5. lithium-ion battery electrolytes according to claim 1-4, which is characterized in that the lithium salts II is selected from six
Lithium fluophosphate, LiBF4, di-oxalate lithium borate, difluorine oxalic acid boracic acid lithium, double fluorine sulfimide lithiums, double fluoroform sulphonyl
The combination of one or more of imine lithium, difluorophosphate.
6. lithium-ion battery electrolytes according to claim 5, which is characterized in that the lithium salts II is difluorophosphate.
7. lithium-ion battery electrolytes according to claim 1-4, which is characterized in that
Based on electrolyte gross mass, the mass ratio of the cathode film formation additive is 1.0-3.5%；
Mass ratio of the 1,3- propene sultone in the electrolyte is 0.1%-1.5%；
The mass ratio of the sulfuric acid vinyl ester in the electrolytic solution is 0.5%-2%；
It optionally, further include vinylene carbonate, fluorinated ethylene carbonate, 1,3- propane sulfonic acid in the cathode film formation additive
The combination of one or more of lactone.
8. lithium-ion battery electrolytes according to claim 7, which is characterized in that
Based on electrolyte gross mass, the mass ratio of the cathode film formation additive is 1.5-3.5%；
Mass ratio of the 1,3- propene sultone in the electrolyte is 0.5-1.5%；
The mass ratio of the sulfuric acid vinyl ester in the electrolytic solution is > 0.5% and≤2%.
9. lithium-ion battery electrolytes according to claim 7, which is characterized in that the lithium salts I is in the electrolyte
Mass percentage be 11-16%.
10. lithium-ion battery electrolytes according to claim 9, which is characterized in that the lithium salts I is selected from hexafluorophosphoric acid
Lithium, LiBF4, di-oxalate lithium borate, difluorine oxalic acid boracic acid lithium, double fluorine sulfimide lithiums, double trifluoromethanesulfonimides
The combination of one or more of lithium, difluorophosphate, and lithium salts I is different lithium salts from lithium salts II.
11. lithium-ion battery electrolytes according to claim 10, which is characterized in that the lithium salts I is lithium hexafluoro phosphate.
12. lithium-ion battery electrolytes according to claim 1-4, which is characterized in that the organic solvent choosing
From one or more of ethylene carbonate, propene carbonate, dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate
Combination.
13. lithium-ion battery electrolytes according to claim 12, which is characterized in that the organic solvent is by ethylene carbonate
Ester, methyl ethyl carbonate, diethyl carbonate composition, three's mass ratio are 20-30:30-40:10-20.
14. a kind of lithium ion battery, which is characterized in that the electrolyte in the lithium ion battery is any one of claim 1-13
The electrolyte.
15. lithium ion battery according to claim 14, which is characterized in that the lithium ion battery is the nickelic anode of ternary
Material lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910305490.9A CN109873206B (en) | 2019-04-16 | 2019-04-16 | Lithium ion battery electrolyte and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910305490.9A CN109873206B (en) | 2019-04-16 | 2019-04-16 | Lithium ion battery electrolyte and lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109873206A true CN109873206A (en) | 2019-06-11 |
| CN109873206B CN109873206B (en) | 2021-03-30 |
Family
ID=66922669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910305490.9A Active CN109873206B (en) | 2019-04-16 | 2019-04-16 | Lithium ion battery electrolyte and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109873206B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600804A (en) * | 2019-10-18 | 2019-12-20 | 深圳市比克动力电池有限公司 | Lithium ion battery electrolyte suitable for NCM811 and SiO-C material system and preparation method thereof |
| CN110994028A (en) * | 2019-12-25 | 2020-04-10 | 香河昆仑化学制品有限公司 | Electrolyte applied to high-energy-density lithium ion battery and preparation method thereof |
| CN111106385A (en) * | 2019-12-25 | 2020-05-05 | 合肥国轩高科动力能源有限公司 | Electrolyte of lithium ion battery, preparation method of electrolyte and battery |
| CN111916826A (en) * | 2020-07-22 | 2020-11-10 | 梅州市量能新能源科技有限公司 | Electrolyte and preparation method thereof, and lithium ion battery and preparation method thereof |
| CN112331914A (en) * | 2019-08-05 | 2021-02-05 | 杉杉新材料（衢州）有限公司 | Non-aqueous electrolyte of lithium ion battery without ethylene carbonate solvent and battery |
| CN113130971A (en) * | 2019-12-31 | 2021-07-16 | 深圳新宙邦科技股份有限公司 | Lithium ion battery |
| CN113871692A (en) * | 2020-06-30 | 2021-12-31 | 东营市海科新源化工有限责任公司 | Lithium ion battery |
| CN113948769A (en) * | 2021-10-11 | 2022-01-18 | 苏州润能动力科技有限公司 | Low-temperature lithium ion battery electrolyte and application thereof |
| CN114221033A (en) * | 2021-11-19 | 2022-03-22 | 湖南钠方新能源科技有限责任公司 | Electrolyte for sodium ion battery and sodium ion battery containing electrolyte |
| CN114267879A (en) * | 2021-10-14 | 2022-04-01 | 湖南立方新能源科技有限责任公司 | Functional additive, electrolyte and lithium battery |
| CN114566712A (en) * | 2022-03-03 | 2022-05-31 | 湖北亿纬动力有限公司 | High-voltage lithium ion battery electrolyte containing lithium difluorophosphate, preparation method thereof and lithium ion battery |
| CN114583268A (en) * | 2021-07-09 | 2022-06-03 | 深圳市研一新材料有限责任公司 | Lithium ion battery electrolyte and application thereof |
| CN115020789A (en) * | 2022-06-06 | 2022-09-06 | 江苏正力新能电池技术有限公司 | Lithium ion secondary battery and power utilization device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766995A (en) * | 2015-03-31 | 2015-07-08 | 宁德新能源科技有限公司 | Electrolyte additive and application thereof in lithium ion battery |
| CN105140564A (en) * | 2015-07-28 | 2015-12-09 | 东莞市凯欣电池材料有限公司 | Lithium-ion battery electrolyte for high-voltage ternary positive electrode material system |
| CN106410282A (en) * | 2016-10-19 | 2017-02-15 | 广州天赐高新材料股份有限公司 | Pretreatment agent and pretreatment method for high-nickel positive electrode of power lithium ion battery |
| CN108258301A (en) * | 2018-02-05 | 2018-07-06 | 广州天赐高新材料股份有限公司 | A kind of excellent lithium ion battery of high temperature cyclic performance |
| CN108598488A (en) * | 2018-06-08 | 2018-09-28 | 东莞市杉杉电池材料有限公司 | A kind of lithium ion battery with high energy density and its electrolyte |
| US20180375154A1 (en) * | 2017-06-23 | 2018-12-27 | Contemporary Amperex Technology Co., Limited | Electrolyte and lithium-ion battery |
| CN109461967A (en) * | 2018-11-01 | 2019-03-12 | 江西优锂新材股份有限公司 | A kind of nickelic tertiary cathode material electrolyte thereof and preparation method |
| CN109546219A (en) * | 2018-12-19 | 2019-03-29 | 珠海光宇电池有限公司 | A kind of lithium-ion battery electrolytes and the lithium ion battery using the electrolyte |
-
2019
- 2019-04-16 CN CN201910305490.9A patent/CN109873206B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766995A (en) * | 2015-03-31 | 2015-07-08 | 宁德新能源科技有限公司 | Electrolyte additive and application thereof in lithium ion battery |
| CN105140564A (en) * | 2015-07-28 | 2015-12-09 | 东莞市凯欣电池材料有限公司 | Lithium-ion battery electrolyte for high-voltage ternary positive electrode material system |
| CN106410282A (en) * | 2016-10-19 | 2017-02-15 | 广州天赐高新材料股份有限公司 | Pretreatment agent and pretreatment method for high-nickel positive electrode of power lithium ion battery |
| US20180375154A1 (en) * | 2017-06-23 | 2018-12-27 | Contemporary Amperex Technology Co., Limited | Electrolyte and lithium-ion battery |
| CN108258301A (en) * | 2018-02-05 | 2018-07-06 | 广州天赐高新材料股份有限公司 | A kind of excellent lithium ion battery of high temperature cyclic performance |
| CN108598488A (en) * | 2018-06-08 | 2018-09-28 | 东莞市杉杉电池材料有限公司 | A kind of lithium ion battery with high energy density and its electrolyte |
| CN109461967A (en) * | 2018-11-01 | 2019-03-12 | 江西优锂新材股份有限公司 | A kind of nickelic tertiary cathode material electrolyte thereof and preparation method |
| CN109546219A (en) * | 2018-12-19 | 2019-03-29 | 珠海光宇电池有限公司 | A kind of lithium-ion battery electrolytes and the lithium ion battery using the electrolyte |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331914A (en) * | 2019-08-05 | 2021-02-05 | 杉杉新材料（衢州）有限公司 | Non-aqueous electrolyte of lithium ion battery without ethylene carbonate solvent and battery |
| CN110600804A (en) * | 2019-10-18 | 2019-12-20 | 深圳市比克动力电池有限公司 | Lithium ion battery electrolyte suitable for NCM811 and SiO-C material system and preparation method thereof |
| CN110994028A (en) * | 2019-12-25 | 2020-04-10 | 香河昆仑化学制品有限公司 | Electrolyte applied to high-energy-density lithium ion battery and preparation method thereof |
| CN111106385A (en) * | 2019-12-25 | 2020-05-05 | 合肥国轩高科动力能源有限公司 | Electrolyte of lithium ion battery, preparation method of electrolyte and battery |
| CN113130971A (en) * | 2019-12-31 | 2021-07-16 | 深圳新宙邦科技股份有限公司 | Lithium ion battery |
| CN113871692A (en) * | 2020-06-30 | 2021-12-31 | 东营市海科新源化工有限责任公司 | Lithium ion battery |
| CN111916826B (en) * | 2020-07-22 | 2021-09-03 | 梅州市量能新能源科技有限公司 | Electrolyte and preparation method thereof, and lithium ion battery and preparation method thereof |
| CN111916826A (en) * | 2020-07-22 | 2020-11-10 | 梅州市量能新能源科技有限公司 | Electrolyte and preparation method thereof, and lithium ion battery and preparation method thereof |
| CN114583268A (en) * | 2021-07-09 | 2022-06-03 | 深圳市研一新材料有限责任公司 | Lithium ion battery electrolyte and application thereof |
| CN113948769A (en) * | 2021-10-11 | 2022-01-18 | 苏州润能动力科技有限公司 | Low-temperature lithium ion battery electrolyte and application thereof |
| CN114267879A (en) * | 2021-10-14 | 2022-04-01 | 湖南立方新能源科技有限责任公司 | Functional additive, electrolyte and lithium battery |
| CN114267879B (en) * | 2021-10-14 | 2024-03-08 | 湖南立方新能源科技有限责任公司 | Functional additive, electrolyte and lithium battery |
| CN114221033A (en) * | 2021-11-19 | 2022-03-22 | 湖南钠方新能源科技有限责任公司 | Electrolyte for sodium ion battery and sodium ion battery containing electrolyte |
| CN114566712A (en) * | 2022-03-03 | 2022-05-31 | 湖北亿纬动力有限公司 | High-voltage lithium ion battery electrolyte containing lithium difluorophosphate, preparation method thereof and lithium ion battery |
| CN115020789A (en) * | 2022-06-06 | 2022-09-06 | 江苏正力新能电池技术有限公司 | Lithium ion secondary battery and power utilization device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109873206B (en) | 2021-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109873206A (en) | Lithium-ion battery electrolytes and lithium ion battery | |
| CN110336078B (en) | Silicon-based negative electrode electrolyte and lithium ion power battery | |
| CN105591158B (en) | A kind of tertiary cathode material lithium ion battery and its electrolyte | |
| CN107834110A (en) | Lithium-ion battery electrolytes and lithium ion battery | |
| CN107768719A (en) | A kind of lithium-ion battery electrolytes and lithium ion battery | |
| CN109473713A (en) | A kind of high-voltage electrolyte for taking into account high temperature performance and the lithium ion battery using the electrolyte | |
| CN109638353B (en) | Battery electrolyte additive, electrolyte containing additive and application of electrolyte | |
| CN106159325B (en) | A kind of low temperature electrolyte for lithium ion battery and low-temperature lithium ion battery | |
| CN108232296B (en) | Electrolyte solution and lithium secondary battery | |
| CN108232300A (en) | A kind of lithium ion battery and its electrolyte | |
| CN108808089A (en) | A kind of iron manganese phosphate lithium battery and its electrolyte | |
| CN109037777A (en) | Lithium ion battery | |
| CN108288728A (en) | It is a kind of adaptation silicon carbon material lithium-ion battery electrolytes and its application | |
| CN109728340A (en) | Lithium ion battery | |
| CN101304101A (en) | Cylinder type lithium ion battery electrolytic solution and preparation method thereof | |
| CN108155415A (en) | A kind of lithium-ion battery electrolytes and lithium ion battery | |
| CN102593513A (en) | Lithium ion secondary battery and electrolyte thereof | |
| CN105261791A (en) | Ultra-temperature high-voltage lithium-ion battery electrolyte and lithium-ion battery using electrolyte | |
| CN108270034A (en) | A kind of lithium-ion battery electrolytes | |
| CN108258317A (en) | A kind of lithium-sulfur cell | |
| CN108390098B (en) | High-voltage lithium ion battery electrolyte and high-voltage lithium ion battery | |
| CN108417894A (en) | A kind of lithium secondary cell electrolyte and lithium secondary battery | |
| CN111146500A (en) | Fast-charging type lithium ion battery non-aqueous electrolyte and lithium ion battery containing electrolyte | |
| CN113130990A (en) | Electrolyte and secondary battery using same | |
| CN111244550B (en) | Lithium ion battery electrolyte additive for high-nickel system, electrolyte and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |