CN113517471B - Non-aqueous electrolyte of lithium ion battery and application thereof - Google Patents
Non-aqueous electrolyte of lithium ion battery and application thereof Download PDFInfo
- Publication number
- CN113517471B CN113517471B CN202110538191.7A CN202110538191A CN113517471B CN 113517471 B CN113517471 B CN 113517471B CN 202110538191 A CN202110538191 A CN 202110538191A CN 113517471 B CN113517471 B CN 113517471B
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- additive
- ion battery
- electrolyte
- carbonate
- 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.)
- Active
Links
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
- H01M10/056—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
- 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
-
- 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
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
A lithium ion battery non-aqueous electrolyte comprises a non-aqueous solvent, an electrolyte lithium salt, a first additive and a second additive; the first additive is a sulfonate material, and the second additive is a caged silicate material containing nitrogen atoms. The novel cyclic sulfonate additive provided by the invention is used for preparing a non-aqueous lithium ion electrolyte solution, is applied to a lithium ion battery, and can form a flexible, thin and uniform SEI film on the surface of a battery cathode; meanwhile, the caged silicate material containing nitrogen atoms has the acid removal capability and can inhibit LiPF6HF in a system is decomposed and complexed, the surface of the anode is passivated, the capacity attenuation during high-temperature circulation is inhibited, the high-temperature circulation performance and the storage characteristic are improved, gas generation during the high-temperature storage of the lithium ion battery is inhibited, and the circulation life is prolonged. In addition, the caged silicate also has certain lithium ion coordination capacity, and improves the transference number of lithium ions.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery non-aqueous electrolyte and application thereof.
Background
The lithium ion battery is mainly composed of a positive electrode, a nonaqueous electrolyte and a negative electrode.
As a negative electrode constituting a lithium ion battery, for example, metallic lithium, a metal compound capable of absorbing and desorbing lithium (for example, a metal simple substance, an oxide, an alloy with lithium, and the like), a carbon material, and the like are known, and in particular, a lithium ion battery using a carbon material such as artificial graphite, natural graphite, and the like capable of absorbing and desorbing lithium is widely used. In the lithium ion battery using a highly-crystallized carbon material such as natural graphite or artificial graphite as a negative electrode material, a non-aqueous solvent in a non-aqueous electrolyte is reductively decomposed on the surface of the negative electrode during charging, and thus the decomposed product or gas generated by the reductive decomposition inhibits the original electrochemical reaction of the battery, thereby deteriorating the cycle characteristics.
In addition, it is known that: lithium ion batteries using lithium metal and alloys thereof, simple metals such as silicon and tin, and oxides as negative electrode materials have a high initial capacity, but the negative electrode materials are increasingly micronized during cycling, and therefore, compared with negative electrodes made of carbon materials, reductive decomposition of a nonaqueous solvent is more likely to occur, resulting in a significant reduction in battery performance, such as battery capacity and cycling characteristics.
In addition, LiCoO is known as a positive electrode2、LiMn2O4、LiNiO2、LiFePO4And the like. When the temperature of the lithium ion battery using these is high in a charged state, the nonaqueous solvent in the nonaqueous electrolytic solution is partially decomposed by oxidation at the interface between the positive electrode material and the nonaqueous electrolytic solution, and the decomposed product and gas generated thereby inhibit the original electrochemical reaction of the battery, resulting in a decrease in performance such as battery cycle characteristics.
In order to overcome the local decomposition of these positive and negative electrodes and to improve the battery performance represented by long-term durability and output characteristics, it is important for the SEI to have high ion conductivity, low electron conductivity and stable formation over a long period of time, and it is common to add a small amount of additives of cyclic sulfonic acid esters, such as DTD, PST, PS and the like, to the electrolyte solution to promote the formation of the SEI film, thereby achieving the purpose of suppressing the decomposition reaction of the solvent on the negative electrode, suppressing the decrease in the capacity of the battery during high-temperature storage, suppressing the generation of gas, and suppressing the deterioration of the load characteristics of the battery.
In recent years, japanese patent JP2017003964 proposes a nonaqueous electrolytic solution using cyclic sulfonate and unsaturated silane as additives, which can improve the high-temperature storage performance of a lithium battery and inhibit gas generation, but in the patent, the cyclic sulfonate material has poor thermal stability, a high acid value and a risk of capacity fading during high-temperature cycling.
Disclosure of Invention
The invention provides a high-temperature-resistant lithium ion battery non-aqueous electrolyte containing a novel cyclic sulfonate additive and a nitrogen atom-containing caged silicate material, aiming at the defects of the prior art, and the non-aqueous electrolyte is applied to the lithium ion battery, can effectively improve the high-temperature cycle performance and the storage characteristic, and can effectively inhibit gas generation during high-temperature storage.
The specific technical scheme is as follows:
the invention provides a lithium ion battery non-aqueous electrolyte, which comprises a non-aqueous solvent, an electrolyte lithium salt, a first additive and a second additive; the first additive is a sulfonate material, and the second additive is a caged silicate material containing nitrogen atoms.
Specifically, the first additive is represented by formula I:
wherein R is one of the following groups:
a hydrogen atom; a fluorine atom; a phenyl group; tolyl; xylyl; phenyl containing 1 to 5 fluorine atoms or 1 to 3 nitro groups; a C1-6 linear or non-linear alkyl group; a C1-6 direct or non-direct alkylene group; an alkyl group containing 1 to 6 carbon atoms and containing a fluorine atom; a C1-6 alkyl group containing at least one of hetero atoms such as N, S, O;
in the formula I, n is a positive integer of 1-3;
specifically, the first additive is prepared by a method described in Russian Journal of Organic Chemistry, Vol.38, No.6,2002, pp.889-894.
Specifically, the second additive is represented by formula II or formula III:
wherein R is1、R2、R3Each independently is one of the following groups:
C1-C4 alkyl; an unsaturated hydrocarbon group having 1 to 3 carbon atoms; a cyclohexyl group; a phenyl group; and (3) a fluorine-containing phenyl group.
Specifically, the second additive is a rodenticide, and the preparation method is reported in the literature, and the reference literature is as follows: russian Journal of General Chemistry, Vol 83, Issue 11, pp2117-2118, 2013; organic chemistry, Issue 2, Pages 109-12, 1982; such materials are described in Japanese patent JP 2010270212 et al.
Further, the first additive is one of the following structural formulas:
further, the second additive is one of the following structural formulas:
further, the mass content of the first additive is 0.05 wt% -10 wt% based on the total mass of the electrolyte.
And further, the mass content of the first additive is 0.5-3 wt% based on the total mass of the electrolyte.
Further, the mass content of the second additive is 0.03-5 wt% based on the total mass of the electrolyte.
And further, the mass content of the second additive is 0.1-2 wt% based on the total mass of the electrolyte.
Further, the electrolyte lithium salt is LiPF6、LiClO4、LiBF4One or more than two of LiBOB, LiODFB, LiTDI, LiTFSI and LiFSI.
Further, the content of the electrolyte lithium salt is 10 wt% -20 wt% based on the total mass of the electrolyte.
Further, the organic solvent includes one selected from the group consisting of ester solvents and amide solvents, or a mixture of two or more thereof. Still further, the ester solvent is at least one compound selected from the group consisting of a cyclic carbonate compound, a direct-bonded ester compound and a cyclic ester compound. For example: the non-aqueous solvent is one or more of ethylene carbonate, propylene carbonate, butylene carbonate, fluoroethylene carbonate, dimethyl carbonate, diethyl carbonate, dipropyl carbonate, methyl ethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, 1, 4-butyrolactone, methyl propionate, methyl butyrate, ethyl acetate, ethyl propionate and ethyl butyrate.
The invention also aims to provide the application of the non-aqueous electrolyte of the lithium ion battery in the lithium ion battery.
It is another object of the present invention to provide a lithium ion battery comprising a negative electrode, a positive electrode, a separator provided between the negative electrode and the positive electrode, and a nonaqueous electrolytic solution according to any one of claims 1 to 8.
The invention has the following beneficial effects:
the novel cyclic sulfonate additive provided by the invention is used for preparing a non-aqueous lithium ion electrolyte solution, is applied to a lithium ion battery, and can form a flexible, thin and uniform SEI film on the surface of a battery cathode; meanwhile, the caged silicate material containing nitrogen atoms has the acid removal capability and can inhibit LiPF6Decomposing and complexing HF in the system, passivating the surface of the positive electrode, inhibiting capacity fading during high-temperature circulation, improving high-temperature circulation performance and storage characteristics, and inhibiting lithiumThe gas is generated during the high-temperature storage period of the ion battery, and the cycle life is prolonged. In addition, the caged silicate also has certain lithium ion coordination capacity, and improves the transference number of lithium ions.
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
The reagents, materials and apparatuses used in the examples and comparative examples of the present invention are all commercially available as conventional reagents, conventional materials and conventional apparatuses unless otherwise specified, and the reagents involved therein can also be synthesized by conventional synthesis methods.
Battery embodiment
The formulations of the nonaqueous electrolytic solutions for lithium ion batteries listed in battery examples 1 to 12 and comparative examples 1 to 6 and the corresponding battery positive electrode materials are shown in table 1.
TABLE 1 formulation of nonaqueous electrolyte for lithium ion batteries of Battery examples 1 to 12 and comparative examples 1 to 6
The method for preparing the lithium ion button cell by using the lithium ion battery nonaqueous electrolyte in the battery examples 1-12 and the lithium ion batteries in the comparative examples 1-6 comprises the following steps:
(1) preparation of positive plate
With LiCoO2The positive electrode material is exemplified by: the positive electrode LiCoO2Mixing the powder, carbon black (particle size of 1000nm), polyvinylidene fluoride (PVDF) and N, N-dimethyl pyrrolidone (NMP) to obtain uniform slurry, and uniformly coating the slurry on aluminum foil (15 μm) current collectorThen drying and rolling are carried out to obtain LiCoO2And (3) a positive electrode material. Baking at 120 deg.C for 12 hr, drying, and adding LiCoO294 wt% of the total coating, 4 wt% of binder and 2 wt% of carbon black. And then cutting the obtained pole piece into a circular sheet with the diameter of 8mm as a positive electrode. Other anode materials LiMn2O4And LiNi0.8Co0.1Mn0.1O2The preparation method is the same.
(2) Preparation of cathode plate
Taking the artificial graphite negative electrode material as an example: the carbon cathode material is prepared by mixing artificial graphite, polyvinylidene fluoride (PVDF) and N-methyl pyrrolidone (NMP) to prepare uniform slurry, uniformly coating the slurry on a copper foil (15 mu m) current collector, and then drying and rolling the copper foil current collector. Drying at 120 ℃ for 12h, wherein in the dried pole piece, graphite accounts for 96.4 wt% of the total coating, binder accounts for 3.6 wt%, and then cutting the obtained pole piece into a circular sheet with the diameter of 8mm to be used as a negative electrode.
(3) Preparation of electrolyte
Dissolving lithium salt in a solvent in an argon atmosphere glove box with the water content less than 1ppm, adding corresponding additives, and uniformly mixing to obtain an electrolyte;
(4) preparation of lithium ion battery
And (3) assembling the CR2430 button cell by using the materials in the steps (1) and (2) as working electrodes and using Celgard 2400 membrane (Tianjin) as a diaphragm. The assembly sequence is as follows from the negative pole to the positive pole: the cathode shell, the elastic sheet, the gasket, the cathode sheet, the electrolyte, the diaphragm, the anode sheet and the anode shell are sealed by a sealing machine. The operation is completed in a pure argon glove box, and the mixture is taken out after standing for 6 hours for electrochemical performance test.
Lithium ion battery performance test
Test one, high temperature cycle performance test
The prepared batteries were subjected to the following tests, respectively:
(1) charging the battery to 4.3V at a constant current of 0.1C multiplying power at 45 ℃, and then discharging to 2.7V at a constant current of a corresponding multiplying power, wherein the first circulation is realized;
(2) after the first circulation is finished, charging to 4.3V at a constant current of 1.0C multiplying power, then discharging to 2.7V at a constant current of a corresponding multiplying power, respectively carrying out 50-time, 100-time and 500-time circulation tests according to the circulation condition, and respectively calculating the capacity retention rate of the battery after 50-time, 100-time and 500-time circulation, wherein the capacity retention rate after the circulation is calculated according to the following formula. The relevant test data obtained for each cell is shown in table 2; in Table 2, batteries 1 to 12 correspond to examples 1 to 12 in this order, and batteries 1# to 6# correspond to comparative examples 1 to 6 in this order.
Capacity retention after cycling ═ 100% (discharge capacity after corresponding number of cycles/discharge capacity at first cycle).
TABLE 245 ℃ Cyclic Performance test results for batteries
From the data of table 2 for different batteries, it is found that the lithium battery made by using the additive provided by the invention has cycle stability at 45 ℃, and the capacity retention rate is much higher than that of battery 1# without the additive, and even if the additive is used in commercialization compared with batteries 2# to 6#, the battery capacity retention rate of 500 cycles also shows obvious advantages.
After the batteries prepared in the embodiments 1 to 12 and the comparative examples 1 to 6 are subjected to 100 cycles, the thermal stability after the cycles is tested:
the battery was charged at a constant current of 0.5C to 4.3V at 25 ℃ and then charged at a constant voltage of 4.3V to a current of 0.025C to be in a fully charged state of 4.3V, and then stored in a high temperature furnace at 65 ℃ for 15 days, while the voltage drop of the battery in the high temperature furnace and the change in volume of the battery after the test were measured, and the test data are shown in Table 3. In Table 3, the batteries 1 to 12 correspond to examples 1 to 12 in this order, and the batteries 1# to 6# correspond to comparative examples 1 to 6 in this order.
Wherein, the voltage drop change rate (%) after the high-temperature storage of the lithium ion battery is (the voltage before the high-temperature storage of the lithium ion battery-the voltage after the high-temperature storage of the lithium ion battery)/the voltage before the high-temperature storage of the lithium ion battery is multiplied by 100%;
the lithium ion battery volume change rate after high temperature storage (%) (volume after high temperature storage of lithium ion battery-volume before high temperature storage of lithium ion battery)/volume before high temperature storage of lithium ion battery x 100%.
TABLE 3 thermal stability of the cells after cycling
As can be seen from Table 3, compared with the state of the batteries 1# -6# subjected to 100 cycles and subjected to the thermal stability test, the voltage drop change rate of the batteries 1-12 subjected to 100 cycles and subjected to the thermal stability test at high temperature is only 11-15%, which is much lower than that of the batteries 1# -6 #.
In addition, the volume change rate is also greatly different, the volume expansion of the batteries 1# to 6# is obvious, and after the batteries 1 to 12 are cycled for many times, the volume change rate of the high-temperature storage is only 4 to 7 percent and is far less than that of the batteries 1# to 6 #. Therefore, the electrolyte containing the novel cyclic sulfonate additive and the nitrogen atom-containing caged silicate additive provided by the invention can be applied to the lithium ion battery, can greatly improve the thermal stability of the lithium ion battery after multiple cycles, inhibits the decomposition and gas production of the electrolyte, and has good application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (9)
1. The non-aqueous electrolyte of the lithium ion battery is characterized by comprising a non-aqueous solvent, an electrolyte lithium salt, a first additive and a second additive; the first additive is a sulfonate material, and the second additive is a caged silicate material containing nitrogen atoms;
the first additive is shown as a formula I, and the second additive is shown as a formula II or a formula III;
wherein R is one of the following groups:
a hydrogen atom; a fluorine atom; a phenyl group; tolyl; xylyl group; phenyl containing 1 to 5 fluorine atoms or 1 to 3 nitro groups; a C1-6 directly or indirectly linked alkyl group; a C1-6 direct or non-direct alkylene group; an alkyl group having 1 to 6 carbon atoms and containing a fluorine atom; a C1-6 alkyl group containing at least one of N, S, O hetero atoms;
in the formula I, n is a positive integer of 1-3;
wherein R is1、R2、R3Each independently is one of the following groups:
C1-C4 alkyl; an unsaturated hydrocarbon group having 1 to 3 carbon atoms; a cyclohexyl group; a phenyl group; and (3) a fluorine-containing phenyl group.
2. The nonaqueous electrolyte solution for the lithium ion battery of claim 1, wherein the first additive is one of the following structural formulas:
3. the nonaqueous electrolyte solution for the lithium ion battery of claim 1, wherein the second additive is one of the following structural formulas:
4. the nonaqueous electrolyte solution for lithium ion batteries according to any one of claims 1 to 3, wherein the content of the first additive is 0.05 to 10% by mass and the content of the second additive is 0.03 to 5% by mass, based on the total mass of the electrolyte solution.
5. The nonaqueous electrolyte for lithium ion batteries according to any one of claims 1 to 3, wherein the electrolyte lithium salt is LiPF6、LiClO4、LiBF4One or more than two of LiBOB, LiODFB, LiTDI, LiTFSI and LiFSI.
6. The nonaqueous electrolyte solution for lithium ion batteries according to any one of claims 1 to 3, wherein the content of the electrolyte lithium salt is 10 to 20% by weight based on the total mass of the electrolyte solution.
7. The nonaqueous electrolyte for a lithium-ion battery according to any one of claims 1 to 3, wherein the nonaqueous solvent is one or more selected from ethylene carbonate, propylene carbonate, butylene carbonate, fluoroethylene carbonate, dimethyl carbonate, diethyl carbonate, dipropyl carbonate, methylethyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, 1, 4-butyrolactone, methyl propionate, methyl butyrate, ethyl acetate, ethyl propionate, and ethyl butyrate.
8. Use of the non-aqueous electrolyte for lithium ion batteries according to any one of claims 1 to 7 in lithium ion batteries.
9. A lithium ion battery comprising a negative electrode, a positive electrode, a separator provided between the negative electrode and the positive electrode, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution is the lithium ion battery nonaqueous electrolytic solution according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538191.7A CN113517471B (en) | 2021-05-18 | 2021-05-18 | Non-aqueous electrolyte of lithium ion battery and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538191.7A CN113517471B (en) | 2021-05-18 | 2021-05-18 | Non-aqueous electrolyte of lithium ion battery and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113517471A CN113517471A (en) | 2021-10-19 |
| CN113517471B true CN113517471B (en) | 2022-07-22 |
Family
ID=78064466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110538191.7A Active CN113517471B (en) | 2021-05-18 | 2021-05-18 | Non-aqueous electrolyte of lithium ion battery and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113517471B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011086548A (en) * | 2009-10-16 | 2011-04-28 | Hiroshima Univ | Solid electrolyte |
| WO2019093853A1 (en) * | 2017-11-13 | 2019-05-16 | 주식회사 엘지화학 | Non-aqueous electrolyte for lithium secondary battery and lithium secondary battery comprising same |
| CN109768327A (en) * | 2018-11-01 | 2019-05-17 | 惠州市宙邦化工有限公司 | A kind of non-aqueous electrolyte for lithium ion cell and the lithium ion battery using the electrolyte |
| CN110459805A (en) * | 2019-08-12 | 2019-11-15 | 河南华瑞高新材料有限公司 | A kind of nickelic tertiary cathode electrolyte thereof |
| CN110808412A (en) * | 2018-08-06 | 2020-02-18 | 宁德时代新能源科技股份有限公司 | Electrolyte and lithium ion battery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5014612B2 (en) * | 2005-10-20 | 2012-08-29 | 旭化成イーマテリアルズ株式会社 | Polymer electrolyte composition containing aromatic hydrocarbon resin and cage silsesquioxane |
| CN102437372B (en) * | 2011-11-22 | 2014-04-16 | 华为技术有限公司 | Lithium-ion battery electrolyte and lithium-ion battery containing same |
| KR20150043425A (en) * | 2012-08-16 | 2015-04-22 | 도요타지도샤가부시키가이샤 | Lithium secondary battery and method for producing same |
-
2021
- 2021-05-18 CN CN202110538191.7A patent/CN113517471B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011086548A (en) * | 2009-10-16 | 2011-04-28 | Hiroshima Univ | Solid electrolyte |
| WO2019093853A1 (en) * | 2017-11-13 | 2019-05-16 | 주식회사 엘지화학 | Non-aqueous electrolyte for lithium secondary battery and lithium secondary battery comprising same |
| CN110808412A (en) * | 2018-08-06 | 2020-02-18 | 宁德时代新能源科技股份有限公司 | Electrolyte and lithium ion battery |
| CN109768327A (en) * | 2018-11-01 | 2019-05-17 | 惠州市宙邦化工有限公司 | A kind of non-aqueous electrolyte for lithium ion cell and the lithium ion battery using the electrolyte |
| CN110459805A (en) * | 2019-08-12 | 2019-11-15 | 河南华瑞高新材料有限公司 | A kind of nickelic tertiary cathode electrolyte thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113517471A (en) | 2021-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113328143A (en) | Non-aqueous electrolyte for lithium battery, preparation method of non-aqueous electrolyte and lithium ion battery | |
| CN111900470B (en) | Multifunctional high-voltage lithium ion battery electrolyte and high-voltage lithium ion battery | |
| CN110797575A (en) | Non-aqueous electrolyte of lithium ion battery and lithium ion battery using same | |
| CN114520371B (en) | Nonaqueous electrolyte and lithium ion battery comprising same | |
| CN113690490B (en) | Phosphite lithium ion battery electrolyte additive and application thereof | |
| CN113066975B (en) | Lithium ion battery | |
| CN111082145A (en) | Lithium ion battery electrolyte matched with silicon-carbon graphite cathode and lithium ion battery | |
| CN110783628A (en) | Non-aqueous electrolyte of lithium ion battery and lithium ion battery using same | |
| CN111934015A (en) | Non-aqueous electrolyte of lithium ion battery and lithium ion battery containing non-aqueous electrolyte | |
| CN115995607A (en) | Lithium ion battery electrolyte and lithium ion battery thereof | |
| CN112510260B (en) | Electrolyte additive, non-aqueous electrolyte and lithium ion battery | |
| CN112421109B (en) | Cyclic sulfonate lithium ion battery electrolyte additive, preparation method and application thereof | |
| CN114695960A (en) | Novel additive with high and low temperature performance, preparation method and application thereof | |
| CN109818062B (en) | Ternary lithium ion battery and electrolyte thereof | |
| CN116093430B (en) | High-voltage nonaqueous electrolyte and lithium ion secondary battery | |
| CN117766856A (en) | Nonaqueous electrolyte and lithium ion battery | |
| CN114520370B (en) | Lithium ion battery electrolyte and lithium ion battery | |
| CN114566712B (en) | High-voltage lithium ion battery electrolyte containing lithium difluorophosphate, preparation method thereof and lithium ion battery | |
| CN113517471B (en) | Non-aqueous electrolyte of lithium ion battery and application thereof | |
| CN113451652B (en) | Non-aqueous electrolyte additive for lithium ion battery and application thereof | |
| CN114464889A (en) | Non-aqueous electrolyte for high-voltage lithium ion battery and lithium ion battery thereof | |
| CN115312860A (en) | Electrolyte and battery comprising same | |
| CN114106047A (en) | Novel phosphine-containing isocyanate electrolyte additive and application thereof | |
| CN114583271A (en) | Electrolyte additive, electrolyte and lithium secondary battery | |
| CN114709481B (en) | Nonaqueous electrolyte and lithium ion battery thereof |
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 |