CN113659203A - Electrolyte containing composite additive and application thereof - Google Patents
Electrolyte containing composite additive and application thereof Download PDFInfo
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- CN113659203A CN113659203A CN202110901010.2A CN202110901010A CN113659203A CN 113659203 A CN113659203 A CN 113659203A CN 202110901010 A CN202110901010 A CN 202110901010A CN 113659203 A CN113659203 A CN 113659203A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an electrolyte containing a composite additive, which comprises electrolyte lithium salt, an organic solvent and the composite additive, wherein the organic solvent is a carbonate solvent, the composite additive is a salt with strong Lewis base anion groups and lithium nitrate, and the electrolyte can be applied to a lithium ion battery or a lithium metal battery. The electrolyte can react on the surface of a negative electrode to generate a layer of inorganic fast-ion solid electrolyte protective film rich in lithium oxynitride, lithium oxide and the like, so that the transmission of lithium ions in the solid electrolyte film is accelerated, the strength of the solid electrolyte film is enhanced, and the normal-temperature and high-temperature fast-charge cycle performance, the normal-temperature and low-temperature power performance of the lithium ion battery are improved; and the composite additive has good compatibility with the fluoroethylene carbonate additive which is mainly used at present.
Description
Technical Field
The invention relates to the technical field of secondary batteries, in particular to electrolyte containing a composite additive and application thereof.
Background
At present, lithium ion batteries are widely applied to a plurality of fields such as portable electronic equipment, electric automobiles and the like. However, there are higher demands for the performance of power batteries in various fields, and particularly in the field of electric vehicles, there are urgent demands for high rate performance and high energy density of batteries. Lithium titanate adopted by the cathode material of the common lithium ion battery in the current market can meet the requirement of quick charge, but the high lithium intercalation platform determines the low energy density. In order to meet the increasing demands for higher energy density and higher rate, it is urgent to develop a lithium ion battery that can achieve both high energy density and fast charging.
In order to solve the problems, the anode uses lithium cobaltate with high specific capacity and nickel cobalt lithium manganate or nickel cobalt lithium manganate ternary material, the cathode uses graphite, and simultaneously, an electrolyte matched with the graphite is selected. For the high-rate quick-charging electrolyte, an organic solvent with low boiling point and low viscosity is usually selected, so that the battery is easy to swell at high temperature, although a film-forming additive can be added to generate a protective film for isolating the reaction of the electrolyte and an active material on the surfaces of a positive electrode and a negative electrode so as to inhibit the decomposition of the solvent, so that the swelling problem caused by the decomposition of the electrolyte is solved, the protective film often influences the cycle performance and the rate performance of the lithium ion battery because of overlarge impedance.
Therefore, it is an urgent need to solve the problem of developing an electrolyte solution that can achieve both rapid charging performance and normal temperature and low temperature and high temperature cycle performance.
Disclosure of Invention
In view of the above, the present invention provides an electrolyte containing a composite additive for lithium ion batteries and lithium metal batteries, wherein the composite additive comprises lithium nitrate and a salt having a strong lewis base anion group as a cosolvent of the lithium nitrate, and the electrolyte can form a layer of dense interface film with high ionic conductivity and low resistance on the surface of a negative electrode, so as to satisfy the fast charging performance, normal temperature, low temperature and high temperature cycle performance of the battery.
In order to achieve the purpose, the invention adopts the following technical scheme:
the electrolyte containing the composite additive comprises electrolyte lithium salt, an organic solvent and the composite additive, wherein the organic solvent is a carbonate solvent, and the composite additive is a salt with strong Lewis base anion groups and lithium nitrate.
Preferably, in the above electrolyte solution containing the composite additive, the electrolyte lithium salt is one or a mixture of more of lithium hexafluorophosphate, lithium perchlorate, lithium bis (oxalato) borate, lithium bis (trifluoromethylsulfonimide) and lithium bis (fluorosulfonato) imide.
Preferably, in the above electrolyte solution containing a composite additive, the carbonate solvent is a mixture of one or more of cyclic ester ethylene carbonate, propylene carbonate, fluoroethylene carbonate and linear ester dimethyl carbonate, diethyl carbonate and ethyl methyl carbonate.
Preferably, in the above-mentioned one composite additive-containing electrolytic solution, the salt having a strong lewis basic anionic group has a general formula of M — X, wherein the anionic group X has a strong lewis basicity.
Preferably, in the above electrolyte solution containing a complex additive, the anionic group X includes difluorophosphate, trifluoroacetate, trifluoromethylsulfonate, tetrafluoroborate, perchlorate, tetraphenylborate, bistrifluoromethylsulfonimide, chloride, tetrafluorooxalic acid phosphate, bromide, lactate, acetate, 2-trifluoromethyl-4, 5-dicyanoimidazolium.
The additive salt has good solubility in carbonate solvents and can promote the dissolution of lithium nitrate.
Preferably, in the above electrolyte solution containing a complex additive, the salt having a strong lewis base anion group is one or more of lithium difluorophosphate, sodium difluorophosphate, ammonium difluorophosphate, lithium trifluoromethanesulfonate, lithium trifluoromethylacetate, lithium perchlorate, lithium lactate, lithium tetrafluoro oxalate phosphate, lithium acetate, lithium tetraphenylborate, lithium chloride, lithium bromide, lithium 2-trifluoromethyl-4, 5-dicyanoimidazolium, lithium bistrifluoromethylsulfonyl imide, lithium bifluorosulfonimide, sodium trifluoromethylacetate, potassium trifluoromethylacetate, lithium difluoromethyl acetate, lithium tetrafluoroborate, and lithium difluorooxalato borate.
Preferably, in the electrolyte containing the composite additive, the molar concentration of the electrolyte lithium salt in the electrolyte is 1-3 mol/L; the molar concentration of the salt with the strong Lewis base anion group in the electrolyte is 0.05-0.5 mol/L; the molar concentration of lithium nitrate in the composite additive in the electrolyte is 0.1-0.5 mol/L.
The invention also discloses application of the electrolyte containing the composite additive in a lithium ion battery or a lithium metal battery.
Preferably, in the application of the electrolyte containing the composite additive in the lithium ion battery or the lithium metal battery, the electrolyte further comprises a positive electrode, an elastic sheet, a gasket, a diaphragm and a negative electrode, wherein the negative electrode is made of natural graphite, artificial graphite, an alloy negative electrode material, a silicon oxide negative electrode material, a silicon carbon material and a silicon oxide/carbon material; the anode is made of lithium iron phosphate, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminate, lithium cobaltate, lithium nickelate or sulfur; the diaphragm is a single-layer polypropylene diaphragm
Compared with the prior art, the invention discloses and provides the electrolyte containing the composite additive and the application thereof in the lithium ion battery or the lithium metal battery, and the electrolyte has the following beneficial effects:
(1) during formation of the electrolyte formed by the composite electrolyte additive, Li-rich electrolyte can be formed on the surface of the negative electrodexNOy、Li3N、Li2The stable SEI film can play a role in separating the electrolyte from the negative electrode, so that the continuous decomposition of the electrolyte on the surface of the negative electrode is avoided, the generation of gas in the charging and discharging process of the battery is reduced, the problem of gas expansion of the battery is not easy to occur, the charging and discharging cycle performance of the battery is improved, and the service life of the battery is prolonged; meanwhile, the film has high lithium ion conduction rate, low impedance, thinness and stability;
(2) the battery electrolyte is compatible with the current lithium ion battery process technology, is compatible with the additive fluoroethylene carbonate widely used at present, and has commercial potential.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a graph showing the cycle performance of the graphite half-cell prepared by using the electrolytes of the experimental group and the control group respectively in example 1;
FIG. 2 is a graph showing the rate performance curves of the graphite half-cells prepared from the electrolytes of the experimental group and the control group in example 1;
FIG. 3 is a performance curve of the ternary battery prepared by the electrolyte of the experimental group and the electrolyte of the control group in example 2;
FIG. 4 is a cycle performance curve of the ternary battery prepared in example 3;
fig. 5 is a cycle performance curve of the ternary battery prepared in example 4;
fig. 6 is a cycle performance curve of the ternary battery prepared in example 5;
fig. 7 is a cycle performance curve of the ternary battery prepared in example 6;
FIG. 8 is a cycle performance curve of the ternary battery prepared in example 7;
fig. 9 is a cycle performance curve of the ternary battery prepared in example 8;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The electrolyte prepared by the invention can react on the surface of a negative electrode to generate a layer of inorganic fast-ion solid electrolyte protective film rich in lithium oxynitride, lithium oxide and the like, so that the transmission of lithium ions in the solid electrolyte film is accelerated, the strength of the solid electrolyte film is enhanced, and the normal-temperature and high-temperature fast-charge cycle performance, the normal-temperature and low-temperature power performance of the lithium ion battery are further improved; and the composite additive has good compatibility with the fluoroethylene carbonate additive which is mainly used at present.
Example 1
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the reference electrolyte is prepared from the following components: 1.0 mol. L-1Lithium hexafluorophosphate; organic solvent: a mixture of ethylene carbonate and dimethyl carbonate in a volume ratio of 3: 7 was used as a control;
adding a composite additive on the basis of a reference electrolyte: 2 wt% of lithium trifluoromethanesulfonate and 0.5 wt% of lithium nitrate, and taking the obtained electrolyte as an experimental group;
heating and stirring for 0.5h in an argon glove box at 40 ℃ until lithium nitrate is completely dissolved;
the electrolyte is used for preparing a lithium battery by taking artificial Graphite as a negative electrode, a lithium sheet as a counter electrode and a single-layer polypropylene membrane as a diaphragm, and through tests, after three cycles of activation of 0.1C (1C: 320mAh/g), the capacities of a control group are 339.33 and 337.18mAh/g respectively, after 50 cycles of 0.5C, the capacities of the control group are 315.68 and 273.59mAh/g respectively, and the capacity retention rates are 93.03 percent and 81.14 percent respectively.
Example 2
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the reference electrolyte is prepared from lithium salt; 1.0 mol. L-1Lithium hexafluorophosphate; organic solvent: a mixture of ethylene carbonate and dimethyl carbonate in a volume ratio of 3: 7 was used as a control;
adding a composite additive on the basis of a reference electrolyte: 3 wt% of lithium tetrafluoroborate and 0.5 wt% of lithium nitrate, and the obtained electrolyte is used as an experimental group;
the mixture was heated and stirred in an argon glove box at 40 ℃ for 0.5h until all the lithium nitrate was dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, after the test and 0.1C (1C: 220mAh/g) activation for three circles, the capacities of an experimental group and a control group are 198.6 mAh/g and 206.6mAh/g respectively, the capacities after 1.0C circulation for 100 circles are 155.9 and 128.6mAh/g respectively, and the capacity retention rates are 78 percent and 62 percent respectively.
Example 3
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the electrolyte is prepared from the following components: 1.0 mol. L-1 lithium hexafluorophosphate; organic solvent: ethylene carbonate to dimethyl carbonate (volume ratio) 3: 7; compound additive: 1 wt% of lithium trifluoroacetate and 1 wt% of lithium nitrate are heated and stirred in an argon glove box at 40 ℃ for 0.5h until the lithium nitrate is completely dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, and through the test, the capacity is 208.5mAh/g after three cycles of 0.1C (1C is 200mAh/g), the capacity is 153.7mAh/g after 100 cycles of 1.0C circulation, and the capacity retention rate is 73.7%.
Example 4
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the electrolyte is prepared from the following components: 1.0 mol. L-1Lithium bis (oxalato) borate; organic solvent: ethylene carbonate to dimethyl carbonate (volume ratio) 1 to 1; compound additive: 1 wt% of lithium trifluoroacetate and 1 wt% of lithium nitrate are heated and stirred in an argon glove box at 40 ℃ for 0.5h until the lithium nitrate is completely dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, and through the test, the capacity is 208.1mAh/g after three cycles of 0.1C (1C is 200mAh/g), the capacity is 148.6mAh/g after 150 cycles of 1.0C circulation, and the capacity retention rate is 71.4%.
Example 5
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the electrolyte is prepared from the following components: 1.0 mol. L-1Lithium bis (oxalato) borate; organic solvent: ethylene carbonate/carbonic acidDimethyl ester to methyl ethyl carbonate (volume ratio) 1: 1; compound additive: 1 wt% of lithium trifluoroacetate and 1 wt% of lithium nitrate are heated and stirred in an argon glove box at 40 ℃ for 0.5h until the lithium nitrate is completely dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, and through the test, the capacity is 207.6mAh/g after three cycles of activation by 0.1C (1C is 200mAh/g), the capacity is 137.5mAh/g after 186 cycles of 1.0C circulation, and the capacity retention rate is 66.2%.
Example 6
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the electrolyte is prepared from the following components: 1.0 mol. L-1Lithium difluorooxalate borate; organic solvent: ethylene carbonate, dimethyl carbonate and methyl ethyl carbonate are 1: 1 (volume ratio); compound additive: 2 weight percent of lithium difluorophosphate and 1 weight percent of lithium nitrate are heated and stirred for 0.5 hour in an argon glove box at the temperature of 40 ℃ until the lithium nitrate is completely dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, and through the test, the capacity is 211mAh/g after three cycles of activation by 0.1C (1C is 200mAh/g), the capacity is 188.4mAh/g after 30 cycles of 1.0C circulation, and the capacity retention rate is 89.2%.
Example 7
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the electrolyte is prepared from the following components: 0.6 mol. L-1Lithium hexafluorophosphate and 0.6 mol. L-1Lithium bis (fluorosulfonyl) imide; organic solvent: ethylene carbonate, dimethyl carbonate and methyl ethyl carbonate are 1: 1 (volume ratio); compound additive: 2 weight percent of lithium difluorophosphate and 1 weight percent of lithium nitrate are heated and stirred for 0.5 hour in an argon glove box at the temperature of 40 ℃ until the lithium nitrate is completely dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, and through the test, the capacity after 0.1C (1C is 200mAh/g) activation for three cycles is 204.4mAh/g, the capacity after 1.0C circulation for 300 cycles is 126.7mAh/g, and the capacity retention rate is 61.9%.
Example 8
In an argon glove box with oxygen pressure and water pressure both less than 0.1ppm, the electrolyte is prepared from the following components: 0.6 mol. L-1Lithium hexafluorophosphate and 0.6 mol. L-1Lithium bis (trifluoromethanesulfonyl) imide; organic solvent: ethylene carbonate, dimethyl carbonate and methyl ethyl carbonate are 1: 1 (volume ratio); compound additive: 2 weight percent of lithium difluorophosphate and 1 weight percent of lithium nitrate are heated and stirred for 0.5 hour in an argon glove box at the temperature of 40 ℃ until the lithium nitrate is completely dissolved.
The electrolyte is used for a full battery test with metal lithium as a negative electrode and nickel cobalt lithium manganate as a positive electrode, a single-layer polypropylene film is used as a diaphragm, and through the test, the capacity after 0.1C (1C is 200mAh/g) activation for three circles is 195.0mAh/g, the capacity after 1.0C circulation for 300 circles is 127.7mAh/g, and the capacity retention rate is 65.5%.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the scheme disclosed by the embodiment, the scheme corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The electrolyte containing the composite additive is characterized by comprising electrolyte lithium salt, an organic solvent and the composite additive, wherein the organic solvent is a carbonate solvent, and the composite additive is a salt with strong Lewis base anion groups and lithium nitrate.
2. The electrolyte containing the composite additive according to claim 1, wherein the electrolyte lithium salt is one or more of lithium hexafluorophosphate, lithium perchlorate, lithium bis (oxalato) borate, lithium bis (trifluoromethylsulfonate) imide and lithium bis (fluorosulfonato) imide.
3. The electrolyte with the composite additive as claimed in claim 1, wherein the carbonate solvent is one or more of cyclic ester ethylene carbonate, propylene carbonate, fluoroethylene carbonate and linear ester dimethyl carbonate, diethyl carbonate and ethyl methyl carbonate.
4. The electrolyte as claimed in claim 1, wherein the salt having strong lewis basic anionic group has a general formula of M-X, wherein the anionic group X has strong lewis basicity.
5. The electrolyte solution containing the complex additive as claimed in claim 4, wherein the anionic group X comprises difluorophosphate, trifluoroacetate, trifluoromethylsulfonate, tetrafluoroborate, perchlorate, tetraphenylborate, bistrifluoromethylsulfonyl imide, chloride, tetrafluorooxalic acid phosphate, bromide, lactate, acetate, 2-trifluoromethyl-4, 5-dicyanoimidazolium.
6. The electrolyte as claimed in claim 4 or 5, wherein the salt having strong Lewis base anion group is one or more of lithium difluorophosphate, sodium difluorophosphate, ammonium difluorophosphate, lithium trifluoromethanesulfonate, lithium trifluoromethylacetate, lithium perchlorate, lithium lactate, lithium tetrafluoro oxalate phosphate, lithium acetate, lithium tetraphenylborate, lithium chloride, lithium bromide, lithium 2-trifluoromethyl-4, 5-dicyanoimidazolium, lithium bistrifluoromethylsulfonimide, sodium trifluoromethylacetate, potassium trifluoromethylacetate, lithium difluoromethylacetate, lithium tetrafluoroborate or lithium difluorooxalato borate.
7. The electrolyte containing the composite additive as claimed in claim 1, wherein the molar concentration of the electrolyte lithium salt in the electrolyte is 1-3 mol/L; the molar concentration of the salt with the strong Lewis base anion group in the electrolyte is 0.05-0.5 mol/L; the molar concentration of lithium nitrate in the composite additive in the electrolyte is 0.1-0.5 mol/L.
8. Use of the electrolyte containing a composite additive according to any one of claims 1 to 7 in a lithium ion battery or a lithium metal battery.
9. The application of the electrolyte containing the composite additive in the lithium ion battery or the lithium metal battery according to claim 8, further comprising a positive electrode, an elastic sheet, a gasket, a diaphragm and a negative electrode, wherein the negative electrode is made of natural graphite, artificial graphite, an alloy negative electrode material, a silicon oxide negative electrode material, a silicon carbon material and a silicon oxide/carbon material; the anode is made of lithium iron phosphate, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminate, lithium cobaltate, lithium nickelate or sulfur; the diaphragm is a single-layer polypropylene diaphragm.
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| CN114899494A (en) * | 2022-04-22 | 2022-08-12 | 远景动力技术(江苏)有限公司 | Electrolyte for lithium-sulfur battery and application thereof |
| CN116231085A (en) * | 2023-05-05 | 2023-06-06 | 宁德时代新能源科技股份有限公司 | Electrolyte, lithium metal battery, preparation method of lithium metal battery and power utilization device |
| WO2023115431A1 (en) * | 2021-12-23 | 2023-06-29 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN117154224A (en) * | 2023-09-15 | 2023-12-01 | 常州千沐新能源有限公司 | Deep eutectic electrolyte additive capable of solubilizing lithium salt, electrolyte and lithium battery |
| CN117352848A (en) * | 2023-12-05 | 2024-01-05 | 北京金羽新材科技有限公司 | Lithium metal battery electrolyte, preparation method thereof and lithium metal battery |
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| CN117352848A (en) * | 2023-12-05 | 2024-01-05 | 北京金羽新材科技有限公司 | Lithium metal battery electrolyte, preparation method thereof and lithium metal battery |
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