CN106169611A - A kind of low-temperature electrolyte with ethyl acetate as solvent - Google Patents
A kind of low-temperature electrolyte with ethyl acetate as solvent Download PDFInfo
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- CN106169611A CN106169611A CN201610823944.8A CN201610823944A CN106169611A CN 106169611 A CN106169611 A CN 106169611A CN 201610823944 A CN201610823944 A CN 201610823944A CN 106169611 A CN106169611 A CN 106169611A
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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
- H01M10/0569—Liquid materials characterised by the solvents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
- H01G11/60—Liquid electrolytes characterised by the solvent
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
-
- 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
- Y02E60/13—Energy storage using capacitors
Abstract
The invention belongs to electrochemical research field, a kind of low-temperature electrolyte with ethyl acetate as solvent of concrete offer.This low-temperature electrolyte, using ethyl acetate and derivant organic solvent thereof as solvent, using lithium salts, sodium salt or quaternary ammonium salt as solute, also comprises additive.Ethyl acetate has the lowest fusing point, is still liquid in the low temperature environment of 83 DEG C.The low-temperature electrolyte that the present invention provides, compared with traditional electrolyte, still shows higher ionic conductivity under lower temperature (80 DEG C).Being applied on lithium ion battery, sodium-ion battery, ultracapacitor and hybrid super capacitor by the electrolyte that the present invention provides, system shows specific capacity, cycle performance and the power-performance of excellence at low temperatures.
Description
Technical field
The invention belongs to technical field of electrochemistry, be specifically related to one and be applicable to lithium ion battery, sodium-ion battery, super
Capacitor and the low-temperature electrolyte of hybrid super capacitor.
Background technology
Since secondary cell commercialization, battery performance such as energy density, power density, big multiplying power discharging property, circulation
The aspects such as performance all achieve and are obviously improved.Along with new material and the continuous research and development of new technique, battery is increasingly
Many fields are widely used.Meanwhile, the problem that battery adapts to ability poor to applied environment is the most outstanding day by day.As
Lithium ion battery charge-discharge performance at low ambient temperatures is poor, and during less than-20 DEG C, majority battery is only capable of releasing its rated capacity
60 80%, be only capable of releasing the 30% of its rated capacity or less when-30-40 DEG C, and lower temperature such as-40-
When 60 DEG C, battery almost cannot discharge.Battery cryogenic property deficiency one of major technology bottleneck becoming its application development, because of
This, the cryogenic property improving battery is to expand the urgent problem of its range.
The cryogenic property affecting battery has factors, including the structure design of battery, electrolyte, the granule of electrode material
Size and electric conductivity, conductive agent, binding agent, the aperture of barrier film, processing technology etc..Research shows, battery is below zero degrees celsius
Hydraulic performance decline is mainly manifested in the decline of available capacity and the decline of discharge voltage plateau, this ionic conductivity with electrolyte,
Electrode is relevant with factors such as the diffusion velocities of the impedance of electrolyte interface, charge transfer impedance and lithium ion.In recent years, many
Research worker has carried out substantial amounts of research work.Wherein, the solvent composition improving electrolyte is believed to be effectively improved electrolysis
The low-temperature conductivity of liquid, thus improve the cryogenic property of battery.Electrolyte is the solution with ionic conductivity, for chemical cell
And the normal work of capacitor provides ion, it is battery and the important component part of capacitor system.Electrolyte is mainly by molten
Agent, electrolyte and additive three part composition, solvent is usually Organic substance or water, and electrolyte is organic salt or inorganic salt,
Additive includes antioxidant and stabilizer etc..Preferably electrolyte needs to have the following characteristics that 1] high electrical conductivity (10-3 S
cm-1)；2] higher decomposition voltage；3] wide temperature range；4] electrolyte itself is inert to electrode material, not with electricity
Solve material generation chemical or electrochemical reaction；5] environmental pollution is little.The kind of electrolyte is different, and its cryogenic property is different,
Its electrical conductivity of the most different electrolyte is different thus affects the conductive capability of ion under cryogenic conditions.Solidified by organic solvent
The impact of point, temperature is the lowest closer to the freezing point of organic substance in electrolyte, causes electrolyte at low temperatures in partly solidifying shape
State, ion migration in the electrolytic solution is obstructed, so the cryogenic property of battery declines.It is organic molten that current battery electrolyte is commonly used
Agent is carbonates, although it possesses that electrical conductivity is high and the advantage such as the electrode compatibility is good, but, under low temperature (≤-20 DEG C), portion
Carbonate solvent is divided to make electrolytic conductivity suddenly decline because of the high deficiency of fusing point.Therefore, exploitation fusing point is low, at wide temperature range
The electrolyte inside having higher ionic conductivity is the important directions optimizing battery cryogenic property.
Thering is provided a kind of low-temperature electrolyte in the present invention, this electrolyte is using ethyl acetate and derivant thereof as solvent.Acetic acid
Ethyl ester is polar non-solute, containing C=O polar group, it is possible to effectively dissolve lithium salts.Ethyl acetate has fusing point simultaneously
The advantage such as low, viscosity is little, dielectric constant is high, oxidation-reduction stability is good, cheap, is particularly suitable for applications in lithium ion battery
Low-temperature electrolyte field is to improve lithium ion battery cryogenic property.
Summary of the invention
It is an object of the invention to provide a kind of low-temperature electrolyte, can be used for lithium ion battery, sodium-ion battery, super electricity
Container and hybrid super capacitor.This electrolyte, using ethyl acetate and derivant organic solvent thereof as solvent, has molten
Point is low, viscosity is little, dielectric constant is high, oxidation-reduction stability is good, have higher ionic conductivity, price low in low temperature environment
The advantage such as honest and clean, it is possible to improve the cryogenic property of battery and capacitor.
The low-temperature electrolyte that the present invention provides, based on ethyl acetate as solvent, i.e. with ethyl acetate and derivative
Thing organic solvent, as solvent, substitutes traditional carbonate-based solvent, using lithium salts, sodium salt or quaternary ammonium salt as solute, adds
Agent.
In the present invention, described ethyl acetate and derivant organic solvent thereof, selected from ethyl acetate and isomers thereof
And derivant, formed including the functional group containing oxygen atom or by halogen atom, nitro, cyano group, carboxyl, sulfonic group replacement
One or more in group；Wherein, halogen atom is F, Cl or Br.
In the present invention, described lithium salts be selected from organic lithium salt and inorganic lithium salt, be chosen in particular from trifluoromethyl sulfonic acid lithium, double (three
Methyl fluoride sulphonyl) imine lithium, three (trimethyl fluoride sulfonyl) lithium methide, double (fluorine sulphonyl) imine lithium, biethyl diacid lithium borate, difluoro
Lithium bis (oxalate) borate, LiN (SO2RF)2、LiN(SO2F)(SO2RF) (wherein RF=-CnF2n+1, n=1 ~ 10), lithium perchlorate, tetrafluoro
Lithium biborate, lithium hexafluoro phosphate, hexafluoro close arsenic (V) acid lithium, lithium chloride, lithium fluoride, lithium bromide, lithium iodide, lithium sulfate, lithium nitrate,
One or more in lithium carbonate, lithium oxalate, lithium formate, Quilonorm (SKB).
In the present invention, described sodium salt is selected from Organic Sodium Salt and inorganic sodium, is chosen in particular from trifluoromethyl sulfonate, double
(trimethyl fluoride sulfonyl) imines sodium, three (trimethyl fluoride sulfonyl) sodium methide, double (fluorine sulphonyl) imines sodium, double ethanedioic acid sodium borate,
Difluoro oxalate sodium borate, NaN (SO2RF)2、NaN(SO2F)(SO2RF) (wherein RF=-CnF2n+1, n=1 ~ 10), sodium perchlorate,
Sodium tetrafluoroborate, sodium hexafluoro phosphate, hexafluoro close arsenic (V) acid sodium, sodium chloride, sodium fluoride, sodium bromide, sodium iodide, sodium sulfate, nitric acid
One or more in sodium, sodium carbonate, Disodium oxalate., sodium formate, sodium acetate.
In the present invention, the concentration of described lithium salts, sodium salt or quaternary ammonium salt is 0.1 ~ 10 mol/L.
In the present invention, described additive selected from quaternary ammonium alkyl radical ion, carbonats compound, phosphate compounds,
One or more in boric acid ester compound, sulfite compounds, sultones compounds.
In the present invention, the content of described additive is the 0.1% ~ 15% of the mass fraction of electrolyte.
The low-temperature electrolyte that the present invention provides, it is adaptable to lithium ion battery, sodium-ion battery, ultracapacitor and mixed type
Ultracapacitor.
In the present invention, use the lithium ion battery of this low-temperature electrolyte, its positive electrode selected from can reversible removal lithium embedded from
Intercalation compound or the organic polymer molecules of son is electrode active material material, described intercalation compound is selected from: transition metal
Oxide, sulfide, phosphide or chloride, described transition metal is Mn, Ni, Co, Fe, V or Ti.Or it is above-mentioned embedding
Enter the material of the metallic element M doping of compound, doped metallic elements M be Li, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La from
One or more in son；Its negative material is selected from intercalation compound and organic polymer molecules, described intercalation compound is selected from
NASICON structural compounds, or transition metal oxide, pyrophosphorylation compound, sulfide or lamellar structure compound,
Described transition metal is Mn, Ni, Co, Fe, V or Ti, and the Surface coating shell of this kind of material or above-claimed cpd
Other metallic elements M doping material, doped metallic elements M is in Li, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La ion
One or more.
In the present invention, use the sodium-ion battery of this low-temperature electrolyte, its positive electrode selected from can reversible deintercalation sodium from
Intercalation compound or the organic polymer molecules of son is electrode active material material, described intercalation compound is selected from: transition metal
Oxide, sulfide, phosphide or chloride, described transition metal is Mn, Ni, Co, Fe, V or Ti.Or it is above-mentioned embedding
Enter the material of the metallic element M doping of compound, doped metallic elements M be Na, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La from
One or more in son；Its negative material is selected from intercalation compound and organic polymer molecules, described intercalation compound is selected from
NASICON structural compounds, or transition metal oxide, pyrophosphorylation compound, sulfide or lamellar structure compound,
Described transition metal is Mn, Ni, Co, Fe, V or Ti, and the Surface coating shell of this kind of material or above-claimed cpd
Other metallic elements M doping material, doped metallic elements M is in Na, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La ion
One or more.
In the present invention, using the ultracapacitor of this low-temperature electrolyte, its electrode material is selected from transition metal oxide, carbon
Material, organic polymer molecules, and the composite of above-mentioned material.
The low-temperature electrolyte that the present invention provides, using ethyl acetate and derivant thereof as solvent.Ethyl acetate is that polarity is non-
Proton solvent, containing C=O polar group, it is possible to effectively dissolve lithium salts.Ethyl acetate has that fusing point is low, viscosity is little, is situated between simultaneously
The advantages such as electric constant is high, oxidation-reduction stability is good, cheap, are particularly suitable for applications in low temperature electrolytes for Li-ion batteries neck
Territory is to improve lithium ion battery cryogenic property.
Detailed description of the invention
For making the purpose of the present invention and technical scheme and advantage clearer, present invention specific examples below is said
Bright, but the invention is not limited in these examples.
Double (trimethyl fluoride sulfonyl) imine lithiums, with ethyl acetate as solvent, are pressed by embodiment 1: under the conditions of anhydrous and oxygen-free
Molar concentration according to 2 mol/L is dissolved in wherein.This electrolyte can be low temperature resistant-80 DEG C.With LiMn2O4 (LMO) as positive electrode,
Titanium phosphate lithium (LTPO) is negative material, and assembling button cell is with 1C rate charge-discharge, and 25 DEG C of capacity of room temperature are 105mAhg-1, low
The subzero 40 DEG C of capacity of temperature are 75mAhg-1, the subzero 80 DEG C of capacity of low temperature are 53mAhg-1(see Table 1).
Double (trimethyl fluoride sulfonyl) imine lithiums, with ethyl acetate as solvent, are pressed by embodiment 2: under the conditions of anhydrous and oxygen-free
Molar concentration according to 2 mol/L is dissolved in wherein.This electrolyte can be low temperature resistant-80 DEG C.With LiMn2O4 (LMO) as positive electrode,
Lithium titanate (LTO) is negative material, and assembling button cell is with 1C rate charge-discharge, and 25 DEG C of capacity of room temperature are 105 mAhg-1, low temperature
Subzero 40 DEG C of capacity are 74 mAhg-1, the subzero 80 DEG C of capacity of low temperature are 52 mAhg-1(see Table 1).
Double (trimethyl fluoride sulfonyl) imine lithiums, with ethyl acetate as solvent, are pressed by embodiment 3: under the conditions of anhydrous and oxygen-free
Molar concentration according to 2 mol/L is dissolved in wherein.This electrolyte can be low temperature resistant-80 DEG C.It is positive pole material with poly-triphenylamine (PTPAn)
Material, polyimides (PI) is negative material, and assembling button cell is with 1C rate charge-discharge, and 25 DEG C of capacity of room temperature are 85mAhg-1, low
The subzero 40 DEG C of capacity of temperature are 59mAhg-1, the subzero 80 DEG C of capacity of low temperature are 48mAhg-1(see Table 1).
Double (trimethyl fluoride sulfonyl) imine lithiums, with ethyl acetate as solvent, are pressed by embodiment 4: under the conditions of anhydrous and oxygen-free
Molar concentration according to 2 mol/L is dissolved in wherein.This electrolyte can be low temperature resistant-80 DEG C.With active carbon material for positive electrode and
Negative material, is assembled into ultracapacitor, and with 1C rate charge-discharge, 25 DEG C of capacity of room temperature are 40mAhg-1, the subzero 40 DEG C of appearances of low temperature
Amount is 34mAhg-1, the subzero 80 DEG C of capacity of low temperature are 28 mAhg-1(see Table 1).
Double (trimethyl fluoride sulfonyl) imine lithiums, with ethyl acetate as solvent, are pressed by embodiment 5: under the conditions of anhydrous and oxygen-free
Molar concentration according to 2 mol/L is dissolved in wherein.This electrolyte can be low temperature resistant-880 DEG C.With LiMn2O4 (LMO) as positive electrode,
Active carbon material is negative material, is assembled into hybrid super capacitor, and with 1C rate charge-discharge, 25 DEG C of capacity of room temperature are
88mAhg-1, the subzero 40 DEG C of capacity of low temperature are 65mAhg-1, the subzero 80 DEG C of capacity of low temperature are 51mAhg-1(see Table 1).
Table 1
。
Claims (10)
1. the low-temperature electrolyte with ethyl acetate as solvent, it is characterised in that organic molten with ethyl acetate and derivant thereof
Agent, as solvent, using lithium salts, sodium salt or quaternary ammonium salt as solute, and includes additive.
Low-temperature electrolyte the most according to claim 1, it is characterised in that described ethyl acetate and derivant organic solvent thereof
Selected from ethyl acetate and isomers thereof and derivant, including the functional group containing oxygen atom or by halogen atom, nitro, cyanogen
Base, carboxyl, sulfonic group replace one or more in the group formed；Wherein, halogen atom is F, Cl or Br.
Low-temperature electrolyte the most according to claim 2, it is characterised in that described ethyl acetate and isomers thereof and spread out
Biology, one or several in ethyl acetate, ethyl pyruvate, ethyl acetoacetate, gamma-butyrolacton.
Low-temperature electrolyte the most according to claim 1, it is characterised in that described lithium salts is selected from trifluoromethyl sulfonic acid lithium, double
(trimethyl fluoride sulfonyl) imine lithium, three (trimethyl fluoride sulfonyl) lithium methide, double (fluorine sulphonyl) imine lithium, biethyl diacid lithium borate,
Difluorine oxalic acid boracic acid lithium, LiN (SO2RF)2、LiN(SO2F)(SO2RF), lithium perchlorate, LiBF4, lithium hexafluoro phosphate, hexafluoro
Close arsenic (V) acid lithium, lithium chloride, lithium fluoride, lithium bromide, lithium iodide, lithium sulfate, lithium nitrate, lithium carbonate, lithium oxalate, lithium formate, second
One or more in acid lithium；Wherein, RF=-CnF2n+1, n=1 ~ 10.
Low-temperature electrolyte the most according to claim 1, it is characterised in that described sodium salt is selected from trifluoromethyl sulfonate, double
(trimethyl fluoride sulfonyl) imines sodium, three (trimethyl fluoride sulfonyl) sodium methide, double (fluorine sulphonyl) imines sodium, double ethanedioic acid sodium borate,
Difluoro oxalate sodium borate, NaN (SO2RF)2、NaN(SO2F)(SO2RF), sodium perchlorate, sodium tetrafluoroborate, sodium hexafluoro phosphate, hexafluoro
Close arsenic (V) acid sodium, sodium chloride, sodium fluoride, sodium bromide, sodium iodide, sodium sulfate, sodium nitrate, sodium carbonate, Disodium oxalate., sodium formate, second
One or more in acid sodium；Wherein, RF=-CnF2n+1, n=1 ~ 10.
6. according to the low-temperature electrolyte one of claim 1-5 Suo Shu, it is characterised in that described lithium salts, sodium salt or quaternary ammonium salt
Concentration is 0.1 ~ 10 mol/L.
Low-temperature electrolyte the most according to claim 1, it is characterised in that described additive selected from quaternary ammonium alkyl radical ion,
Carbonats compound, phosphate compounds, boric acid ester compound, sulfite compounds, sultones class chemical combination
One or more in thing；The content of additive is the 0.1% ~ 15% of the quality of electrolyte.
8. the low-temperature electrolyte as described in one of claim 1-7 at lithium ion battery, sodium-ion battery, ultracapacitor and mixes
Application in mould assembly ultracapacitor.
Application the most according to claim 8, it is characterised in that:
For lithium ion battery, its positive electrode is selected from dividing the intercalation compound or organic polymer of reversible deintercalate lithium ions
Son is electrode active material material, described intercalation compound is selected from: the oxide of transition metal, sulfide, phosphide or chlorination
Thing, described transition metal is Mn, Ni, Co, Fe, V or Ti；Or the material of above-mentioned intercalation compound metallic element M doping
Material, doped metallic elements M is one or more in Li, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La ion；
Its negative material is selected from intercalation compound and organic polymer molecules, described intercalation compound is selected from: NASICON structuring
Compound, or transition metal oxide, pyrophosphorylation compound, sulfide or lamellar structure compound, described transition metal unit
Element is Mn, Ni, Co, Fe, V or Ti, and other metallic elements M of the Surface coating shell of this kind of material or above-claimed cpd
The material of doping, doped metallic elements M is one or more in Li, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La ion；
For sodium-ion battery, its positive electrode is selected from: can the intercalation compound or organic polymer of reversible deintercalation sodium ion
Molecule is electrode active material material, described intercalation compound is selected from: the oxide of transition metal, sulfide, phosphide or chlorine
Compound, described transition metal is Mn, Ni, Co, Fe, V or Ti, or above-mentioned intercalation compound metallic element M doping
Material, doped metallic elements M is one or more in Na, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La ion；
Its negative material is selected from intercalation compound and organic polymer molecules, described intercalation compound is selected from: NASICON structuring
Compound, or transition metal oxide, pyrophosphorylation compound, sulfide or lamellar structure compound, described transition metal unit
Element is Mn, Ni, Co, Fe, V or Ti, and other metallic elements M of the Surface coating shell of this kind of material or above-claimed cpd
The material of doping, doped metallic elements M is one or more in Na, Mg, Cr, Al, Co, Ni, Mn, Zn, Cu, La ion.
Application the most according to claim 8, it is characterised in that for ultracapacitor, its electrode material is selected from oxo transition metal
Compound, material with carbon element, organic polymer molecules, and the composite of above-mentioned material.
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| CN110085911A (en) * | 2019-04-27 | 2019-08-02 | 珠海冠宇电池有限公司 | Nonaqueous electrolytic solution and lithium ion battery containing the nonaqueous electrolytic solution |
| CN110085911B (en) * | 2019-04-27 | 2021-04-06 | 珠海冠宇电池股份有限公司 | Non-aqueous electrolyte and lithium ion battery containing same |
| CN113299976A (en) * | 2020-02-24 | 2021-08-24 | 中国科学院物理研究所 | Electrolyte with high solvent-sodium salt ratio and sodium ion battery |
| CN111952671A (en) * | 2020-07-20 | 2020-11-17 | 复旦大学 | Low-temperature electrolyte with ethyl fluoroacetate as solvent and application thereof |
| CN112331874A (en) * | 2020-10-23 | 2021-02-05 | 复旦大学 | Wide-temperature-range electrolyte for lithium-carbon fluoride battery |
| CN112331874B (en) * | 2020-10-23 | 2022-03-18 | 复旦大学 | Wide-temperature-range electrolyte for lithium-carbon fluoride battery |
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