CN111384442A - Film forming additive for battery electrolyte anode, electrolyte using film forming additive and lithium ion battery - Google Patents
Film forming additive for battery electrolyte anode, electrolyte using film forming additive and lithium ion battery Download PDFInfo
- Publication number
- CN111384442A CN111384442A CN201910158857.9A CN201910158857A CN111384442A CN 111384442 A CN111384442 A CN 111384442A CN 201910158857 A CN201910158857 A CN 201910158857A CN 111384442 A CN111384442 A CN 111384442A
- Authority
- CN
- China
- Prior art keywords
- additive
- battery electrolyte
- lithium ion
- ion battery
- electrolyte
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
- C07C255/15—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms containing cyano groups and singly-bound oxygen atoms bound to the same unsaturated acyclic carbon skeleton
-
- 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
-
- 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
-
- 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
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
-
- 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
Abstract
The invention provides an additive applied to battery electrolyte, which has the structure shown in the following (I),
the substituents are shown in the specification. The invention also provides an electrolyte and a battery using the additive. The additive provided by the invention can form a stable CEI film on the surface of the anode, and improve the high-voltage cycle performance of the battery.
Description
Technical Field
The invention belongs to the field of lithium ion battery electrolyte, and relates to an additive for lithium ion battery electrolyte, and electrolyte and a lithium ion battery using the additive.
Background
The lithium ion battery has the advantages of high energy density, long cycle life, high working voltage, small self-discharge, no memory effect and the like, and is widely applied to the fields of 3C, energy storage, power batteries and the like. Longer cycle life, higher energy density, faster rate performance, wider use temperature and lower price cost are important directions for the development of lithium ion batteries.
Increasing the battery energy density may be achieved by increasing the battery charge cutoff voltage, for example: increasing the operating voltage of existing battery systems, e.g. LiCoO2And an NMC ternary battery system, wherein the specific capacity of the battery is improved by nearly 8% and the energy density is improved by nearly 10% when the charging voltage of the NMC ternary battery system is improved by 0.1V; a new battery system was developed. LiCoPO4(4.8V)、LiNi0.5Mn1.5O4(4.7V)、Li2CoPO4F(5.1V)、LiNiPO4The positive electrode material such as (5.1V) can be stably cycled under high voltage.
However, when the operating voltage exceeds the electrochemical window (<4.3V) of the conventional carbonate electrolyte, a series of problems are caused, such as: under high voltage, the electrolyte is easy to be oxidized and decomposed violently on the surface of the positive electrode, so that high interface impedance and battery capacity attenuation are caused; the dissolution of metal cations in the electrolyte under high voltage can cause the structural damage of the positive electrode and influence the cycling stability of the battery; metal cations dissolved in the electrolyte can be separated out as metal dendrites on the graphite cathode, and the safety of the battery is influenced. Therefore, suppressing the side reactions at the positive electrode/electrolyte interface at high voltages is a key measure to improve the performance of high voltage lithium ion batteries.
In order to suppress the occurrence of side reactions at the positive electrode/electrolyte interface at high voltage, it is necessary to construct a stable positive electrode/electrolyte interface. Current uses include positive electrode protection and the use of electrolyte additives. Positive electrode protection, e.g. by using some inorganic compounds (AlPO)4，TiO2，AlF3Etc.) to inhibit the dissolution of metal elements in the anode material and the oxidation of electrolyte under high voltage, but the coating layer generally has higher impedance, which causes the polarization increase and rate capability reduction of the battery. With the electrolyte additive, i.e. with the electrolyte additive adapted, a good interfacial film is formed at the positive electrode. No electrolyte additive has been found that is particularly suitable for forming a good interfacial film on the positive electrode.
Therefore, it is necessary to further study the film-forming additive for the positive electrode of the lithium ion battery.
Disclosure of Invention
The invention aims to provide a battery electrolyte additive, which has the following structural formula (I):
wherein:
r1 and R2 are independently selected from C1-C20 alkyl, C2-C20 alkenyl, C1-C20 halogenated alkyl, C2-C20 halogenated alkenyl, C6-C20 aryl and C6-C20 halogenated aryl.
The substituent groups R1 and R2 of the compound shown in the structural formula (I) are independently selected from C1-C20 alkyl, C2-C20 alkenyl, C1-C20 halogenated alkyl, C2-C20 halogenated alkenyl, C6-C20 aryl and C6-C20 halogenated aryl.
Preferably, the substituents R1 and R2 are independently selected from C1-C12 alkyl, C2-C12 alkenyl, C1-C12 haloalkyl, C2-C12 haloalkenyl, C6-C12 aryl and C6-C12 haloaryl.
It is further preferred that the substituents R1, R2 are independently selected from C1-C6 alkyl, C2-C6 alkenyl, C1-C6 haloalkyl, C2-C6 haloalkenyl.
Most preferably, the substituents R1 and R2 are independently selected from C1-C3 alkyl, C2-C3 alkenyl, C1-C3 haloalkyl, and C2-C3 haloalkenyl.
The battery electrolyte additive shown in the structural formula (I) is suitable to be used as a positive electrode film forming additive in battery electrolyte.
When the compound represented by the structural formula (I) is used as a film-forming additive for a positive electrode, the positive electrode of the battery is preferably LiNi0.5Co0.2Mn0.3O2Lithium cobaltate and LiNi0.5Mn1.5O4Or Li1.13[Ni0.2Co0.2Mn0.47]O2。
The invention also provides a lithium ion battery electrolyte which contains the compound shown in the structural formula (I).
When the lithium ion battery electrolyte contains the compound shown in the structural formula (I), the content of the compound shown in the structural formula (I) in the lithium ion battery electrolyte is preferably 0.02-2%. More preferably, in the lithium ion battery electrolyte, the content of the compound represented by the structural formula (I) is 0.1% to 1%.
The lithium ion battery electrolyte provided by the invention can further contain lithium salt, organic solvent and additive besides the compound shown in the structural formula (I), namely: the lithium ion battery electrolyte contains lithium salt, an organic solvent, an additive and a compound shown in a structural formula (I).
The invention provides a lithium ion batteryAs the electrolyte, a lithium salt used may be one commonly used in the art. Preferably, the lithium salt is selected from LiBF4、LiPF6、LiFSI、LiTFSI、LiAsF6、LiClO4、LiSO3CF3、 LiC2O4BC2O4、LiF2BC2O4、LiDTI、LiPO2F2At least one of (1).
The organic solvent used in the lithium ion battery electrolyte provided by the invention can be an organic solvent commonly used in the field. Preferably, the organic solvent is selected from at least one of carbonate, phosphate, carboxylate, ether, nitrile and sulfone solvents.
The additive used in the lithium ion battery electrolyte provided by the invention can be an additive which is beneficial to improving the performance of the electrolyte. Preferably, the additive is selected from at least one of a negative electrode film forming additive, a water removal additive, a positive electrode film forming additive, a conductivity increasing additive, a wettability improving additive, and a flame retardant additive. It is further preferred that the additive is selected from at least one of biphenyl, Vinylene Carbonate (VC), fluoroethylene carbonate, vinylethylene carbonate, propylene sulfite, butylene sulfite, 1, 3-Propanesultone (PS), 1, 4-butanesultone, 1,3- (1-propene) sultone, vinyl sulfite, vinyl sulfate, cyclohexylbenzene, tris (trimethylsilane) borate (TMSB), tris (trimethylsilane) phosphate, tert-butyl benzene, succinonitrile, ethylene glycol bis (propionitrile) ether, and succinic anhydride. Still more preferably, the additive is selected from the group consisting of the compound represented by the structural formula (I) and at least one selected from the group consisting of vinylene carbonate, 1, 3-propanesultone, tris (trimethylsilane) borate, fluoroethylene carbonate and vinylethylene carbonate. Most preferably, the additive is selected from the group consisting of compounds represented by formula (I) and at least one selected from the group consisting of vinylene carbonate, 1, 3-propane sultone, and tris (trimethylsilane) borate.
When the lithium ion battery electrolyte contains lithium salt, organic solvent, additive and compound shown in the structural formula (I), the content of the lithium salt, the organic solvent, the additive and the compound shown in the structural formula (I) in the electrolyte can improve the performance of the battery. Preferably, in the lithium ion battery electrolyte, the content of lithium salt is 5-15%, the content of organic solvent is 72-95%, the content of additive is 0.2-10%, and the content of compound shown in structural formula (I) is 0.1-5%.
The invention also provides a lithium ion battery containing the electrolyte. In addition to the above electrolyte, the lithium ion battery according to the present invention may further include other components commonly used in lithium ion batteries described in the art.
When the compound shown in the structural formula (I) provided by the invention is used in a battery electrolyte, compared with the prior art, the compound has the following advantages:
the invention provides a novel anode film forming additive, the layer of anode film forming additive is subjected to oxidative decomposition before a solvent, and decomposition products are deposited on the surfaces of anode materials such as lithium cobaltate, nickel-cobalt-manganese, nickel-manganese, rich-lithium-manganese and the like, so that the service performance of a battery can be effectively improved.
Drawings
Fig. 1 is a LSV curve of the electrolytes formulated in example 1 and comparative example 1.
Fig. 2 is a graph of ac impedance spectra of the electrolytes prepared in example 1 and comparative example 1 after 2 weeks of cycle of assembling NCM 523/lithium metal half cell, respectively.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the invention to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.
Firstly, electrolyte preparation and battery performance test
Example 1
(1) Preparation of the electrolyte
Ethylene Carbonate (EC), diethyl carbonate (DEC) and Ethyl Methyl Carbonate (EMC) were mixed in a mass ratio of 3:2:5, and then lithium hexafluorophosphate (LiPF) was added6) ToThe molar concentration is 1mol/L, and 1 percent of compound 1 based on the total mass of the electrolyte is added. Compound 1 is of the formula:
(2) preparation of Positive plate
A positive electrode active material lithium nickel cobalt manganese oxide LiNi was mixed in a mass ratio of 93:4:30.5Co0.2Mn0.3O2Conductive carbon black Super-P, and a binder polyvinylidene fluoride (PVDF), which are then dispersed in N-methyl-2-pyrrolidone (NMP) to obtain a positive electrode slurry. And (3) uniformly coating the slurry on two sides of the aluminum foil, drying, rolling and vacuum drying, and welding an aluminum outgoing line by using an ultrasonic welding machine to obtain the positive plate.
(3) Preparation of negative plate
Mixing artificial graphite serving as a negative electrode active material, conductive carbon black Super-P, Styrene Butadiene Rubber (SBR) serving as a binding agent and carboxymethyl cellulose (CMC) according to a mass ratio of 92:2:3:3, and dispersing the materials in deionized water to obtain negative electrode slurry. Coating the slurry on two sides of a copper foil, drying, rolling and vacuum drying, and welding a nickel outgoing line by using an ultrasonic welding machine to obtain the negative plate.
(4) Preparation of cell
And placing a polyethylene microporous membrane with the thickness of 20 mu m between the positive plate and the negative plate as a diaphragm, then winding a sandwich structure consisting of the positive plate, the negative plate and the diaphragm, and encapsulating the wound structure in an aluminum-plastic film after leading out a tab to obtain the battery core to be injected with liquid.
(5) Liquid injection and formation of battery core
In a glove box with moisture less than 10ppm, the electrolyte prepared above was injected into the cell in an amount to ensure filling of the voids in the cell. Then the formation is carried out according to the following steps: charging at 0.01C for 30min, charging at 0.02C for 60min, charging at 0.05C for 90min, charging at 0.1C for 240min, standing for 1hr, shaping, sealing, charging at 0.2C for 4.40V, standing at room temperature for 24hr, and discharging at 0.2C for 3.0V.
(6) Cycle performance test
The discharge capacity was recorded at 1 week and at 300 weeks after constant current charging to 4.40V at 1C and then constant voltage charging until the current dropped to 0.1C and then constant current discharging to 3.0V at 1C, so cycling for 300 weeks.
The capacity retention rate was calculated according to the following formula:
capacity retention rate is 100% of discharge capacity at 300 weeks/discharge capacity at 1 week.
Example 2
The same as in example 1 except that 1% of compound 1 was changed to 0.5% of compound 1 in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Example 3
The same as in example 1 except that 1% of compound 1 was changed to 2% of compound 1 in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Example 4
The same as in example 1 except that 1% of compound 1 was changed to 1% of compound 2 in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1. Compound 2 has the following structural formula:
example 5
The same as in example 1 except that 1% of compound 1 was changed to 1% of compound 3 in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1. Compound 3 has the following structural formula:
example 6
The same as in example 1 except that 1% of compound 1 was changed to 1% of compound 4 in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1. Compound 4 is of the formula:
example 7
The same as in example 1 except that 1% of compound 1 was changed to 1% of compound 5 in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1. Compound 5 structural formula is as follows:
example 8
The same as in example 1 except that 1% of compound 1 was changed to 1% of compound 1+ 1% of VC (vinylene carbonate) in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Example 9
The same as in example 1 except that 1% of compound 1 was changed to 1% of compound 1+ 1% VC + 1% PS (1, 3-propanesultone) in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Example 10
In the preparation of positive electrodes, LiNi0.5Co0.2Mn0.3O2The same procedure as in example 1 was repeated except that the lithium cobaltate was used instead, and the data of the ordinary temperature cycle performance obtained by the test are shown in Table 1.
Example 11
In the preparation of positive electrodes, LiNi0.5Co0.2Mn0.3O2Change to LiNi0.5Mn1.5O4The same procedure as in example 1 was repeated except that the positive electrode was tested to obtain the data of the normal temperature cycle performance shown in Table 1.
Example 12
In the preparation of positive electrodes, LiNi0.5Co0.2Mn0.3O2Replacing the lithium-rich manganese-based anode material Li1.13[Ni0.2Co0.2Mn0.47]O2Otherwise, the same as example 1, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Comparative example 1
1% of Compound 1 was removed in the preparation of the electrolyte, the same as in example 1, and the data of the normal temperature cycle performance obtained by the test are shown in Table 1.
Comparative example 2
The same as in example 1 except that 1% of the compound was changed to 1% of VC in the preparation of the electrolyte, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Comparative example 3
The same as in example 1 except that 1% of the compound was changed to 1% of VC and 1% of PS in the preparation of the electrolyte, and the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Comparative example 4
The same as in example 1 except that 1% of compound 1 was changed to 1% of TMSB (tris (trimethylsilane) borate) in the preparation of the electrolyte, the data of the ordinary temperature cycle properties obtained by the test are shown in table 1.
Comparative example 5
1% of the compound was removed in the preparation of the electrolyte, and LiNi was used in the preparation of the positive electrode0.5Co0.2Mn0.3O2Change to LiCoO2Otherwise, the same as example 1, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Comparative example 6
1% of the compound was removed in the preparation of the electrolyte, and LiNi was used in the preparation of the positive electrode0.5Co0.2Mn0.3O2Change to LiNi0.5Mn1.5O4The same as example 1 except for the positive electrode, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
Comparative example 7
1% of the compound was removed in the preparation of the electrolyte, and LiNi was used in the preparation of the positive electrode0.5Co0.2Mn0.3O2Replacing the lithium-rich manganese-based anode material Li1.13[Ni0.2Co0.2Mn0.47]O2Otherwise, the same as example 1, the data of the normal temperature cycle performance obtained by the test are shown in table 1.
TABLE 1
Secondly, testing the film forming performance of the anode
1. LSV curve test
The LSV curves of the electrolytes formulated in example 1 and comparative example 1 were tested using a three-electrode method (NMC532 electrode as the working electrode, metallic lithium as the reference electrode and the counter electrode, and scan rate of 0.05 mV/s).
As can be seen from fig. 1, the electrolyte prepared in example 1 has an oxidative decomposition initial potential of about 4.80V and a decomposition peak of 5.2V, which indicates that compound 1 starts oxidative decomposition at 4.80V, and forms a stable interfacial film on the surface of the positive electrode material, and the interfacial film can significantly passivate side reactions between the electrode and the electrolyte. As can also be seen from fig. 1, after the compound 1 was oxidized, the oxidation current of the electrolyte was low, and no significant oxidative decomposition current was observed up to 6.7V, indicating that the CEI film formed on the surface of the positive electrode was more stable and had better oxidation resistance.
2. AC impedance testing
The electrolytes prepared in example 1 and comparative example 1 were assembled into NCM 523/lithium metal half-cells, respectively, and the ac impedance spectra of the two NCM 523/lithium metal half-cells after 2 weeks of cycling were tested, with the test results shown in fig. 2.
As can be seen from fig. 2, the NCM 523/lithium metal half-cell assembled by using the electrolyte prepared in example 1 has lower CEI film impedance after cycling, which indicates that the additive shown in structural formula (I) provided by the present invention can significantly reduce the CEI film impedance of the cell at high voltage, thereby improving the high voltage cycling performance of the cell.
Claims (18)
1. A battery electrolyte additive shown in a structural formula (I),
wherein:
r1 and R2 are independently selected from C1-C20 alkyl, C2-C20 alkenyl, C1-C20 halogenated alkyl, C2-C20 halogenated alkenyl, C6-C20 aryl and C6-C20 halogenated aryl.
2. The battery electrolyte additive of claim 1 wherein in said structural formula (I):
r1 and R2 are independently selected from C1-C12 alkyl, C2-C12 alkenyl, C1-C12 halogenated alkyl, C2-C12 halogenated alkenyl, C6-C12 aryl and C6-C12 halogenated aryl.
3. The battery electrolyte additive of claim 2 wherein in said structural formula (I):
r1 and R2 are independently selected from C1-C6 alkyl, C2-C6 alkenyl, C1-C6 halogenated alkyl and C2-C6 halogenated alkenyl.
4. A battery electrolyte additive according to claim 3 wherein in said structural formula (I):
r1 and R2 are independently selected from C1-C3 alkyl, C2-C3 alkenyl, C1-C3 halogenated alkyl and C2-C3 halogenated alkenyl.
5. The battery electrolyte additive of claim 1 wherein said additive is used as a positive electrode film forming additive.
6. The battery electrolyte additive of claim 5 wherein the additive is used as a positive electrode film forming additive, the positive electrode of the battery being selected from the group consisting of LiNi0.5Co0.2Mn0.3O2Lithium cobaltate and LiNi0.5Mn1.5O4Or Li1.13[Ni0.2Co0.2Mn0.47]O2。
7. A lithium ion battery electrolyte, characterized in that it contains a compound of formula (I) according to claim 1.
8. The lithium ion battery electrolyte of claim 7, wherein the content of the compound represented by the structural formula (I) in the lithium ion battery electrolyte is 0.02-2%.
9. The lithium ion battery electrolyte of claim 8, wherein the content of the compound represented by the structural formula (I) in the lithium ion battery electrolyte is 0.1% to 1%.
10. The lithium ion battery electrolyte of claim 7, wherein the lithium ion battery electrolyte comprises a lithium salt, an organic solvent, an additive, and a compound of formula (I).
11. The lithium ion battery electrolyte of claim 10, wherein the lithium salt is selected from the group consisting of LiBF4、LiPF6、LiFSI、LiTFSI、LiAsF6、LiClO4、LiSO3CF3、LiC2O4BC2O4And LiF2BC2O4At least one of (1).
12. The lithium ion battery electrolyte of claim 10, wherein the organic solvent is selected from at least one of carbonate, phosphate, carboxylate, ether, nitrile, and sulfone solvents.
13. The lithium ion battery electrolyte of claim 10, wherein the additive is selected from at least one of a negative electrode film forming additive, a water removal additive, a positive electrode film forming additive, a conductivity enhancing additive, a wettability enhancing additive, and a flame retardant additive.
14. The lithium ion battery electrolyte of claim 13 wherein the additive is selected from at least one of biphenyl, vinylene carbonate, fluoroethylene carbonate, vinylethylene carbonate, propylene sulfite, butylene sulfite, 1, 3-propane sultone, 1,4 butane sultone, 1,3- (1-propene) sultone, vinyl sulfite, vinyl sulfate, cyclohexylbenzene, tris (trimethylsilane) borate, tris (trimethylsilane) phosphate, t-butyl benzene, succinonitrile, ethylene glycol bis (propionitrile) ether, and succinic anhydride.
15. The battery electrolyte additive of claim 14 wherein the additive is selected from the group consisting of compounds of formula (I) and at least one member selected from the group consisting of vinylene carbonate, 1, 3-propanesultone, tris (trimethylsilane) borate, fluoroethylene carbonate and vinylethylene carbonate.
16. The battery electrolyte additive of claim 15 wherein the additive is selected from the group consisting of compounds of formula (I) and at least one member selected from the group consisting of vinylene carbonate, 1, 3-propane sultone, and tris (trimethylsilane) borate.
17. The lithium ion battery electrolyte of claim 10, wherein the lithium ion battery electrolyte contains 5 to 15% of lithium salt, 72 to 95% of organic solvent, 0.2 to 10% of additive, and 0.02 to 2% of compound represented by structural formula (I).
18. A lithium ion battery, characterized in that it contains the battery electrolyte according to claim 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018116392576 | 2018-12-29 | ||
| CN201811639257 | 2018-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111384442A true CN111384442A (en) | 2020-07-07 |
| CN111384442B CN111384442B (en) | 2023-09-12 |
Family
ID=71125741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910158857.9A Active CN111384442B (en) | 2018-12-29 | 2019-03-04 | Positive electrode film forming additive for battery electrolyte, electrolyte using additive and lithium ion battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111384442B (en) |
| WO (1) | WO2020135584A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366354A (en) * | 2020-12-02 | 2021-02-12 | 蜂巢能源科技有限公司 | Electrolyte and lithium ion battery |
| CN114335724A (en) * | 2021-12-28 | 2022-04-12 | 广州天赐高新材料股份有限公司 | High-voltage lithium ion battery electrolyte and lithium ion battery |
| TWI777912B (en) * | 2022-06-02 | 2022-09-11 | 台灣中油股份有限公司 | Lithium-ion battery electrolyte and lithium-ion battery |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120135314A1 (en) * | 2010-11-26 | 2012-05-31 | Soulbrain Co., Ltd | Electrolyte additive, electrolyte including the same and lithiumsecondary battery including the electrolyte. |
| CN102709588A (en) * | 2012-01-12 | 2012-10-03 | 宁德新能源科技有限公司 | Lithium ion battery and electrolyte thereof |
| CN104852087A (en) * | 2015-04-15 | 2015-08-19 | 宁德时代新能源科技有限公司 | Electrolyte additive and lithium ion battery using the same |
| CN105720303A (en) * | 2014-12-05 | 2016-06-29 | 浙江蓝天环保高科技股份有限公司 | Fluoro-carboxylic ester contained electrolyte for high-voltage lithium ion battery |
| CN105762410A (en) * | 2016-04-01 | 2016-07-13 | 宁德新能源科技有限公司 | Non-aqueous electrolyte and lithium-ion battery using same |
| CN105762413A (en) * | 2016-05-18 | 2016-07-13 | 东莞市凯欣电池材料有限公司 | Non-aqueous electrolyte solution for lithium ion battery and lithium ion battery adopting non-aqueous electrolyte solution |
| CN106025278A (en) * | 2016-07-01 | 2016-10-12 | 东莞市凯欣电池材料有限公司 | High-voltage lithium ion battery |
| WO2017020431A1 (en) * | 2015-08-03 | 2017-02-09 | 深圳新宙邦科技股份有限公司 | Non-aqueous electrolyte of lithium-ion battery and lithium-ion battery |
| CN107293781A (en) * | 2016-04-11 | 2017-10-24 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery |
| US20170346136A1 (en) * | 2016-05-25 | 2017-11-30 | Ningde Amperex Technology Limited | Electrolyte and lithium-ion battery containing the same |
| CN108183260A (en) * | 2017-12-13 | 2018-06-19 | 中国科学院过程工程研究所 | A kind of electrolyte and lithium ion battery |
| CN108321434A (en) * | 2018-03-23 | 2018-07-24 | 安普瑞斯（无锡）有限公司 | A kind of high-voltage lithium-ion battery electrolyte |
| CN108666623A (en) * | 2018-05-15 | 2018-10-16 | 北京科技大学 | A kind of electrolyte of high-voltage lithium ion batteries |
| CN108987802A (en) * | 2018-06-15 | 2018-12-11 | 桑顿新能源科技有限公司 | A kind of high-voltage lithium ion batteries nonaqueous electrolytic solution |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9466827B2 (en) * | 2010-09-02 | 2016-10-11 | Nec Corporation | Secondary battery |
| CN104584309B (en) * | 2012-08-09 | 2017-10-24 | 三菱化学株式会社 | Non-aqueous electrolyte and the nonaqueous electrolyte secondary battery using the non-aqueous electrolyte |
| KR101725627B1 (en) * | 2014-05-14 | 2017-04-11 | 주식회사 엘지화학 | Electrolyte and secondary battery comprising the same |
-
2019
- 2019-03-04 CN CN201910158857.9A patent/CN111384442B/en active Active
- 2019-12-26 WO PCT/CN2019/128699 patent/WO2020135584A1/en active Application Filing
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120135314A1 (en) * | 2010-11-26 | 2012-05-31 | Soulbrain Co., Ltd | Electrolyte additive, electrolyte including the same and lithiumsecondary battery including the electrolyte. |
| CN102709588A (en) * | 2012-01-12 | 2012-10-03 | 宁德新能源科技有限公司 | Lithium ion battery and electrolyte thereof |
| CN105720303A (en) * | 2014-12-05 | 2016-06-29 | 浙江蓝天环保高科技股份有限公司 | Fluoro-carboxylic ester contained electrolyte for high-voltage lithium ion battery |
| CN104852087A (en) * | 2015-04-15 | 2015-08-19 | 宁德时代新能源科技有限公司 | Electrolyte additive and lithium ion battery using the same |
| WO2017020431A1 (en) * | 2015-08-03 | 2017-02-09 | 深圳新宙邦科技股份有限公司 | Non-aqueous electrolyte of lithium-ion battery and lithium-ion battery |
| CN105762410A (en) * | 2016-04-01 | 2016-07-13 | 宁德新能源科技有限公司 | Non-aqueous electrolyte and lithium-ion battery using same |
| CN107293781A (en) * | 2016-04-11 | 2017-10-24 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery |
| CN105762413A (en) * | 2016-05-18 | 2016-07-13 | 东莞市凯欣电池材料有限公司 | Non-aqueous electrolyte solution for lithium ion battery and lithium ion battery adopting non-aqueous electrolyte solution |
| US20170346136A1 (en) * | 2016-05-25 | 2017-11-30 | Ningde Amperex Technology Limited | Electrolyte and lithium-ion battery containing the same |
| CN106025278A (en) * | 2016-07-01 | 2016-10-12 | 东莞市凯欣电池材料有限公司 | High-voltage lithium ion battery |
| CN108183260A (en) * | 2017-12-13 | 2018-06-19 | 中国科学院过程工程研究所 | A kind of electrolyte and lithium ion battery |
| CN108321434A (en) * | 2018-03-23 | 2018-07-24 | 安普瑞斯（无锡）有限公司 | A kind of high-voltage lithium-ion battery electrolyte |
| CN108666623A (en) * | 2018-05-15 | 2018-10-16 | 北京科技大学 | A kind of electrolyte of high-voltage lithium ion batteries |
| CN108987802A (en) * | 2018-06-15 | 2018-12-11 | 桑顿新能源科技有限公司 | A kind of high-voltage lithium ion batteries nonaqueous electrolytic solution |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366354A (en) * | 2020-12-02 | 2021-02-12 | 蜂巢能源科技有限公司 | Electrolyte and lithium ion battery |
| CN114335724A (en) * | 2021-12-28 | 2022-04-12 | 广州天赐高新材料股份有限公司 | High-voltage lithium ion battery electrolyte and lithium ion battery |
| CN114335724B (en) * | 2021-12-28 | 2023-06-27 | 广州天赐高新材料股份有限公司 | High-voltage lithium ion battery electrolyte and lithium ion battery |
| TWI777912B (en) * | 2022-06-02 | 2022-09-11 | 台灣中油股份有限公司 | Lithium-ion battery electrolyte and lithium-ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020135584A1 (en) | 2020-07-02 |
| CN111384442B (en) | 2023-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5932150B2 (en) | Non-aqueous electrolyte and lithium secondary battery including the same | |
| KR101492686B1 (en) | Additive for non-aqueous liquid electrolyte, non-aqueous liquid electrolyte and lithium secondary cell comprising the same | |
| CN111883839B (en) | High-voltage electrolyte and lithium ion battery based on same | |
| CN111525190B (en) | Electrolyte and lithium ion battery | |
| CN110752406B (en) | Electrolyte and application thereof | |
| CN109888384B (en) | Electrolyte and battery containing the same | |
| CN111384443B (en) | Battery electrolyte additive, electrolyte using same and lithium ion battery | |
| CN111354978A (en) | High-voltage ternary lithium ion battery electrolyte and high-voltage ternary lithium ion battery | |
| CN111725575A (en) | High nickel lithium cell and car | |
| CN111129598A (en) | High-voltage lithium ion battery non-aqueous electrolyte and lithium ion battery thereof | |
| JP2018513542A (en) | Non-aqueous electrolyte for lithium ion battery and lithium ion battery | |
| CN111129590A (en) | High-voltage lithium ion battery non-aqueous electrolyte and high-voltage lithium ion battery | |
| CN111384442B (en) | Positive electrode film forming additive for battery electrolyte, electrolyte using additive and lithium ion battery | |
| CN111430801B (en) | Electrolyte of lithium ion secondary battery and application thereof | |
| CN110957530A (en) | High-voltage lithium ion battery electrolyte and high-voltage lithium ion battery | |
| CN110911748A (en) | Lithium secondary battery electrolyte and lithium secondary battery | |
| CN114520371B (en) | Nonaqueous electrolyte and lithium ion battery comprising same | |
| CN111384438A (en) | Lithium ion battery non-aqueous electrolyte and lithium ion battery | |
| CN111146497B (en) | Additive for battery electrolyte, lithium ion battery electrolyte and lithium ion battery | |
| CN109638351B (en) | High-voltage electrolyte with high and low temperature performance and lithium ion battery thereof | |
| CN115763971A (en) | High-voltage lithium cobalt oxide lithium ion battery non-aqueous electrolyte and lithium ion battery | |
| CN113130999A (en) | Lithium ion battery electrolyte and lithium ion battery | |
| CN111384441A (en) | Battery electrolyte additive, electrolyte containing additive and lithium ion battery | |
| CN114447432A (en) | Lithium ion battery non-aqueous electrolyte and lithium ion battery | |
| CN110890590A (en) | Multifunctional high-voltage lithium ion battery electrolyte and high-voltage lithium ion 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 |