CN109994779A - A kind of non-aqueous electrolyte for lithium ion cell and lithium ion battery - Google Patents
A kind of non-aqueous electrolyte for lithium ion cell and lithium ion battery Download PDFInfo
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- H—ELECTRICITY
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- 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
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- 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
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Abstract
To overcome the problems, such as existing lithium ion battery there are cryogenic property, high-temperature storage and cycle performance deficiency, the present invention provides a kind of non-aqueous electrolyte for lithium ion cell, including 1 compound represented A of pyridines complex chemical compound and structural formula:
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of non-aqueous electrolyte for lithium ion cell and lithium ion
Battery.
Background technique
Lithium ion battery is because of the features such as its operating voltage is high, highly-safe, long-life, memory-less effect, in portable electric
Significant progress is achieved in sub- product scope.Meanwhile with the development of new-energy automobile, lithium ion battery is in new-energy automobile
There is huge application prospect with dynamic power system.
In non-aqueous electrolyte lithium ion battery, nonaqueous electrolytic solution is a key factor for influencing battery performance, especially
Ground, influence of the additive to battery performance in nonaqueous electrolytic solution are especially prominent.In lithium ion battery initial charge process, lithium
Ion deintercalation from positive electrode comes out, and is embedded in Carbon anode then in conjunction with by the corresponding electronics of external circuit by electrolyte.By
The reduction potential of ingredient in electrolyte is higher than lithium, and electrolyte can be reduced on Carbon anode surface in initial charge process
The passivating film that production is made of inorganic and organic compound, the passivating film are known as solid electrolyte interfacial film (SEI).SEI is not only
It can be formed, can also be formed due to electrolyte oxidation on positive electrode surface on Carbon anode surface.In initial charge process
The SEI film that middle positive and negative pole material surface is formed, determine electrolyte then in the degree of cathode or positive polar decomghtion, while also shadow
The speed for having rung lithium ion insertion cathode and deintercalation anode, so SEI film largely determines performance of lithium ion battery
Superiority and inferiority.
In order to improve the properties of lithium ion battery, many scientific research persons by added into electrolyte different cathode at
Film additive (such as vinylene carbonate, fluorinated ethylene carbonate, vinylethylene carbonate) Lai Gaishan SEI film, so as to improve electricity
The properties in pond.For example, being proposed in Japanese Unexamined Patent Publication 2000-123867 bulletin by adding carbonic acid Asia in the electrolytic solution
Vinyl acetate improves battery behavior.It is anti-that in negative terminal surface reduction decomposition can occur for vinylene carbonate prior to solvent molecule
It answers, passivating film can be formed in negative terminal surface, prevent electrolyte from further decomposing in electrode surface, can also prevent electrolyte in anode
Surface oxidation is to improve the cycle performance of battery.But after adding vinylene carbonate, battery holds in the process in high-temperature storage
It is also easy to produce gas, causes battery that bulging occurs.In addition, the passivation membrane impedance that vinylene carbonate is formed is larger, especially in low temperature
Under the conditions of, it is easy to happen low temperature charging analysis lithium, influences battery security.Fluorinated ethylene carbonate can also form blunt in negative terminal surface
Change film, improves the cycle performance of battery, and the passivating film impedance ratio formed is lower, can improve the low temperature performance of battery.
But fluorinated ethylene carbonate generates more gases in high-temperature storage, hence it is evident that reduces battery high-temperature storge quality.
Meanwhile cryogenic property and cycle performance are also the key performance that lithium ion battery needs to pay close attention to, current lithium ion
Battery is difficult to take into account cryogenic property, high-temperature storage and cycle performance.
Summary of the invention
Aiming at the problem that existing lithium ion battery is difficult to take into account cryogenic property, high-temperature storage and cycle performance, the present invention is mentioned
A kind of non-aqueous electrolyte for lithium ion cell and lithium ion battery are supplied.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
On the one hand, the present invention provides a kind of non-aqueous electrolyte for lithium ion cell, including pyridines complex chemical compound and knot
1 compound represented A of structure formula:
In structural formula 1, R1、R2、R3、R4、R5、R6It is each independently selected from hydrogen, fluorine atom or containing 1~5 carbon atom
Group；
The pyridines complex chemical compound is the complex chemical compound of pyridine compounds and their and boron trifluoride or phosphorus pentafluoride.
Optionally, the group containing 1-5 carbon atom is selected from alkyl, halohydrocarbyl, oxygen-containing alkyl, hydrocarbyl silyl or contains
The alkyl that cyano replaces.
Optionally, the R1、R2、R3、R4、R5、R6It is each independently selected from hydrogen atom, fluorine atom, methyl, ethyl, methoxy
Base, ethyoxyl, trimethylsiloxy group, cyano or trifluoromethyl.
Optionally, the 1 compound represented A of structural formula is selected from following compound:
Optionally, the pyridines complex chemical compound is selected from shown in 2 compound represented B of structural formula and/or structural formula 3
Compound C:
R7-R16It is each independently selected from hydrogen atom, halogen atom, cyano or the alkyl containing 1-5 carbon atom.
Optionally, the 2 compound represented B of structural formula is selected from following compound:
The 3 compound represented C of structural formula is selected from following compound:
It optionally, is the quality of the compound A in terms of 100% by the gross mass of the non-aqueous electrolyte for lithium ion cell
Percentage composition is 0.1%~5.0%, and the mass percentage of the pyridines complex chemical compound is 0.1%~5.0%.
Optionally, the nonaqueous electrolytic solution further includes unsaturated cyclic carbonic ester, fluoric cyclic carbonate, in cyclic annular sulfonic acid
At least one of ester and cyclic sulfates.
Optionally, the unsaturated cyclic carbonic ester includes vinylene carbonate, vinylethylene carbonate, methylene carbonic acid
At least one of vinyl acetate；
The fluoric cyclic carbonate includes fluorinated ethylene carbonate, trifluoromethyl ethylene carbonate and double fluoro carbonic acid second
At least one of enester；
The ring-type sultones includes in 1,3- propane sultone, 1,4- butane sultone and acrylic -1,3- sulfonic acid
At least one of ester；
The cyclic sulfates are selected from least one of sulfuric acid vinyl ester and 4- methylsulfuric acid vinyl acetate.
On the other hand, the present invention provides a kind of lithium ion battery, including anode, cathode, for be isolated the anode and
The diaphragm of the cathode and non-aqueous electrolyte for lithium ion cell as described above.
It joined pyridines complex chemical compound and structural formula 1 in non-aqueous electrolyte for lithium ion cell provided by the invention simultaneously
Compound represented A.Wherein, pyridines complex chemical compound can participate in negative electrode material surface during initial charge
The formation of passivating film, effectively inhibits the further decomposition of solvent and lithium salts, to improve the cycle performance of battery.But pyridines
The passivation membrane impedance that complex chemical compound is formed is larger, is unfavorable for the conduction of lithium ion, reduces the multiplying power and low temperature discharge property of battery
Energy.Inventor by many experiments find, when in non-aqueous electrolyte for lithium ion cell be added pyridines complex chemical compound when, lithium from
The cycle performance of sub- battery can improve, but can reduce the multiplying power and low temperature performance of battery, and pass through pyridines Composite
It closes object to be used together with 1 compound represented A of structural formula, can make lithium ion obtained that there is good high temperature storage and cyclicity
Can, and taken into account cryogenic property.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
The embodiment of the invention provides a kind of non-aqueous electrolyte for lithium ion cell, including pyridines complex chemical compound and structure
1 compound represented A of formula:
In structural formula 1, R1、R2、R3、R4、R5、R6It is each independently selected from hydrogen, fluorine atom or containing 1~5 carbon atom
Group；The pyridines complex chemical compound is the complex chemical compound of pyridine compounds and their and boron trifluoride or phosphorus pentafluoride.
In some embodiments, the group containing 1-5 carbon atom is selected from alkyl, halohydrocarbyl, oxygen-containing alkyl, siliceous
The alkyl that alkyl or cyano-containing replace.
In some embodiments, the R3、R4、R5、R6、R7、R8It is each independently selected from hydrogen atom, fluorine atom, methyl, second
Base, methoxyl group, ethyoxyl, trimethylsiloxy group, cyano or trifluoromethyl.
In some embodiments, the 1 compound represented A of structural formula is selected from following compound:
It should be noted that be present invention part of compounds claimed above, but not limited to this, it should not be construed as
Limitation of the present invention.
In the present invention, the pyridines complex chemical compound is the compound of pyridine compounds and their and boron trifluoride or phosphorus pentafluoride
Compound.The pyridine compounds and their is pyridine or the pyridine derivate containing pyridine functional groups.In some embodiments, the pyrrole
Pyridine class complex chemical compound is selected from 3 compound represented C of 2 compound represented B of structural formula and/or structural formula:
R7-R16It is each independently selected from hydrogen atom, halogen atom, cyano or the alkyl containing 1-5 carbon atom.
Optionally, the 2 compound represented B of structural formula is selected from following compound:
In the present invention, compound A and pyridines complex chemical compound are used as electrolysis additive to use, and content can not
It is excessively high.In some embodiments, in terms of by the gross mass of the non-aqueous electrolyte for lithium ion cell for 100%, the compound A's
Mass percentage is 0.1%~5.0%, and the mass percentage of the pyridines complex chemical compound is 0.1%~5.0%.
For example, the mass percentage of the compound A can for 0.1%, 0.2%, 0.4%, 0.5%, 0.6%, 0.8%,
0.9%, 1%, 1.2%, 1.5%, 1.8%, 2%, 2.1%, 2.4%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%.It is excellent
In the case of choosing, the mass percentage of the compound A is 0.1%~2.5%.The compound A and the pyridines are compound
When the content of compound is too low or excessively high, it is unfavorable for the raising of the performance of battery.Especially when the too high levels of compound A
When, the cryogenic property of battery can be remarkably decreased.
The nonaqueous electrolytic solution also includes unsaturated cyclic carbonic ester, fluoric cyclic carbonate, cyclic annular sultones and ring
At least one of shape sulfuric ester.
In a more preferred embodiment, the unsaturated cyclic carbonic ester include vinylene carbonate (CAS:872-36-6,
Be abbreviated as VC), vinylethylene carbonate (CAS:4427-96-7 is abbreviated as VEC), mesomethylene carbon vinyl acetate (CAS:
At least one of 124222-05-5)；
The fluoric cyclic carbonate includes fluorinated ethylene carbonate (CAS:114435-02-8 is abbreviated as FEC), trifluoro
At least one in methyl carbonic acid vinyl acetate (CAS:167951-80-6) and difluoroethylene carbonate (CAS:311810-76-1)
Kind；
The ring-type sultones includes 1,3-propane sultone (CAS:1120-71-4 is abbreviated as PS), Isosorbide-5-Nitrae-butane sulphur
At least one of lactone (CAS:1633-83-6) and acrylic -1,3- sultones (CAS:21806-61-1)；
The cyclic sulfates are selected from sulfuric acid vinyl ester (CAS:1072-53-3 is abbreviated as DTD) and 4- methylsulfuric acid ethylene
At least one of ester (CAS:5689-83-8).
As existing, contain solvent and lithium salts in non-aqueous electrolyte for lithium ion cell, for molten in the present invention program
Agent type and content are not particularly limited, such as the solvent of the non-aqueous electrolyte for lithium ion cell includes cyclic carbonate and chain
Carbonic ester.
Preferably, the cyclic carbonate includes at least one in ethylene carbonate, propene carbonate and butylene
Kind.The linear carbonate includes at least one of dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, methyl propyl carbonate.
Lithium salts is not particularly limited in the present invention, can be used existing various, such as the lithium salts can be selected from LiPF6、
LiBF4、LiBOB、LiDFOB、LiN(SO2CF3)2、LiN(SO2F)2At least one of.The content of the lithium salts can be in larger model
Enclose interior variation, under preferable case, in the non-aqueous electrolyte for lithium ion cell, the content of lithium salts is 0.1-15%.
Another embodiment of the present invention discloses a kind of lithium ion battery, including anode, cathode, for the anode to be isolated
With the diaphragm and non-aqueous electrolyte for lithium ion cell as described above of the cathode.
The anode includes positive electrode active materials, and the active material of the anode is LiNixCoyMnzL(1-x-y-z)O2、
LiCox’L(1-x’)O2、LiNix”L’y’Mn(2-x”-y’)O4、Liz’MPO4At least one of；Wherein, L Al, Sr, Mg, Ti, Ca,
At least one of Zr, Zn, Si or Fe；0≤x≤1,0≤y≤1,0≤z≤1,0 < x+y+z≤1,0 < x '≤1,0.3≤x "
≤ 0.6,0.01≤y '≤0.2；L ' is at least one of Co, Al, Sr, Mg, Ti, Ca, Zr, Zn, Si, Fe；0.5≤z '≤1,
M is at least one of Fe, Mn, Co.
The cathode includes negative electrode active material, and the negative electrode active material can be by carbon material, metal alloy, otide containing lighium
Object and material are made.Preferably, the negative electrode active material is selected from artificial graphite, natural graphite.Certainly, it is not limited to listed
Both lifted.
The diaphragm is the conventional separator of field of lithium ion battery, therefore repeats no more.
Lithium ion battery provided in an embodiment of the present invention has preferable low due to containing above-mentioned nonaqueous electrolytic solution
Warm nature energy, high temperature cyclic performance and high-temperature storage performance.
The present invention is further detailed by the following examples.
Embodiment 1
The present embodiment is for illustrating non-aqueous electrolyte for lithium ion cell, lithium ion battery and its preparation side disclosed by the invention
Method, including following operating procedure:
Positive preparation step are as follows: by the quality of 92:4:3 than blended anode activity material lithium nickel cobalt manganese oxide
LiNi0.5Co0.2Mn0.3O2, conductive carbon black Super-P and binder polyvinylidene fluoride (PVDF), be dispersed in N- methyl -2- pyrrole
In pyrrolidone (NMP), anode sizing agent is obtained, anode sizing agent is uniformly coated on the two sides of aluminium foil, by drying, calendering and true
Sky is dry, and is burn-on with supersonic welder and obtain positive plate after aluminum lead-out wire, and the thickness of positive plate is between 120-150 μm.
Cathode preparation step are as follows: by the mass ratio mixing artificial graphite of 94:1:2.5:2.5, conductive carbon black Super-P, glue
Agent butadiene-styrene rubber (SBR) and carboxymethyl cellulose (CMC) are tied, dispersion in deionized water, obtains negative electrode slurry, by negative electrode slurry
It is coated on the two sides of copper foil, by drying, calendering and vacuum drying, and is burn-on with supersonic welder and obtained after nickel lead-out wire
Negative plate, the thickness of negative plate is between 120-150 μm.
Nonaqueous electrolytic solution preparation step are as follows: by ethylene carbonate (EC), diethyl carbonate (DEC) and methyl ethyl carbonate
(EMC) it is mixed in mass ratio for EC:DEC:EMC=1:1:1, lithium hexafluoro phosphate (LiPF is then added6) to molar concentration
It for 1mol/L, and is to be added in terms of 100% containing quality percentage shown in embodiment 1 in table 1 by the total weight of the nonaqueous electrolytic solution
The component of content.
Diaphragm preparation step are as follows: three layers of isolation film are used, with a thickness of 20 μm.
Battery assembly step are as follows: three layers of isolation film are placed between positive plate and negative plate, then by positive plate, negative plate
It is wound with the sandwich structure of diaphragm composition, then is put into aluminum foil sack after coiling body is flattened, vacuum is dried at 85 DEG C
It bakes for 24 hours, obtains battery core to be injected；In dew point control in -40 DEG C of glove boxes below, the electrolyte of above-mentioned preparation is injected
In battery core, through Vacuum Package, it is static for 24 hours.
Then the conventional chemical conversion of initial charge: 0.05C constant-current charge 180min, 0.2C constant-current charge is carried out according to the following steps
To 3.95V, secondary vacuum sealing, then further with the electric current constant-current charge of 0.2C to 4.2V, normal temperature shelf for 24 hours after, with
The electric current constant-current discharge of 0.2C obtains the LiNi of 4.2V a kind of to 3.0V0.5Co0.2Mn0.3O2/ artificial graphite lithium ion battery.
Embodiment 2~14
Embodiment 2~14 is for illustrating non-aqueous electrolyte for lithium ion cell, lithium ion battery and its system disclosed by the invention
Most operating procedure in Preparation Method, including embodiment 1, the difference is that:
In the nonaqueous electrolytic solution preparation step:
It is in terms of 100% by the total weight of the nonaqueous electrolytic solution, embodiment 2~reality in table 1 is added in the nonaqueous electrolytic solution
Apply the component of mass percentage shown in example 14.
Comparative example 1~11
Comparative example 1~11 for comparative illustration non-aqueous electrolyte for lithium ion cell disclosed by the invention, lithium ion battery and
Most operating procedure in preparation method, including embodiment 1, the difference is that:
In the nonaqueous electrolytic solution preparation step:
It is that comparative example 1 in table 1~right is added in the nonaqueous electrolytic solution in terms of 100% by the total weight of the nonaqueous electrolytic solution
The component of mass percentage shown in ratio 11.
Performance test
The lithium ion battery that above-described embodiment 1~14 and comparative example 1~11 are prepared performs the following performance tests:
1) high temperature cyclic performance is tested
At 45 DEG C, the battery after chemical conversion is charged to 4.2V with 1C constant current constant voltage, is 0.01C by electric current, then uses 1C
Constant-current discharge is to 3.0V.After such charge/discharge n times circulation, the conservation rate of capacity after n-th circulation is calculated, to assess its high temperature
Cycle performance.
45 DEG C of 1C circulation n times capacity retention ratio calculation formula are as follows:
N-th circulation volume conservation rate (%)=(n-th cyclic discharge capacity/first time cyclic discharge capacity) ×
100%.
2) 60 DEG C of high-temperature storage performance tests
Battery after chemical conversion is charged to 4.2V with 1C constant current constant voltage at normal temperature, by electric current be 0.01C, then with 1C constant current
It is discharged to 3.0V, measures battery initial discharge capacity, then use 1C constant-current constant-voltage charging to 4.2V, be 0.01C by electric current, measure
Then battery is measured the thickness of battery after 60 DEG C store N days by the original depth of battery, then with 1C constant-current discharge to 3.0V,
Measure the holding capacity of battery, then use 1C constant-current constant-voltage charging to 4.2V, by electric current be 0.01C, then with 1C constant-current discharge
To 3.0V, measurement restores capacity.Capacity retention ratio, the calculation formula of capacity restoration rate are as follows:
Battery capacity conservation rate (%)=holding capacity/initial capacity × 100%；
Capacity resuming rate (%)=recovery capacity/initial capacity × 100%；
Cell thickness expansion rate (%)=(thickness-original depth after N days)/original depth × 100%.
3) -20 DEG C of cryogenic property tests
At 25 DEG C, the lithium ion battery after chemical conversion is charged to 4.2V with 1C constant current constant voltage, then extremely with 1C constant-current discharge
3.0V records discharge capacity.It is charged to 4.2V with 1C constant current constant voltage again, is placed in -20 DEG C of environment after shelving 12h, with 0.2C perseverance
Stream is discharged to 3.0V, records discharge capacity.
- 20 DEG C of low temperature discharge capacity conservation rate=0.2C discharge capacity (- 20 DEG C)/1C discharge capacity (25 DEG C) ×
100%.
Obtained test result filling table 1.
Table 1
By the data of embodiment 1~14 and comparative example 1~11 in table 1 it is found that compared to independent addition pyridines Composite
Object is closed, when sharing using pyridines complex chemical compound and 1 compound represented A of structural formula, the low temperature of battery can be significantly improved
Performance, high temperature circulation and high-temperature storage performance.
The data of comparative example 10~14 and comparative example 7~11 are it is found that in pyridines complex chemical compound and carbonic acid Asia second
Enester, fluorinated ethylene carbonate, 1,3- propane sultone or sulfuric acid vinyl ester mixed system on the basis of add shown in structural formula 1
Compound A, cryogenic property, high temperature circulation and the high-temperature storage performance of battery obtained further raising.
Meanwhile the test result of comparative example 6 and embodiment 8 is it is found that when excessively high Compound A content, battery low temperature properties
It can be remarkably decreased.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of non-aqueous electrolyte for lithium ion cell, which is characterized in that including shown in pyridines complex chemical compound and structural formula 1
Compound A:
In structural formula 1, R1、R2、R3、R4、R5、R6It is each independently selected from hydrogen, fluorine atom or the group containing 1~5 carbon atom；
The pyridines complex chemical compound is the complex chemical compound of pyridine compounds and their and boron trifluoride or phosphorus pentafluoride.
2. non-aqueous electrolyte for lithium ion cell according to claim 1, which is characterized in that described containing 1-5 carbon atom
Group is selected from the alkyl that alkyl, halohydrocarbyl, oxygen-containing alkyl, hydrocarbyl silyl or cyano-containing replace.
3. non-aqueous electrolyte for lithium ion cell according to claim 2, which is characterized in that the R1、R2、R3、R4、R5、R6
It is each independently selected from hydrogen atom, fluorine atom, methyl, ethyl, methoxyl group, ethyoxyl, trimethylsiloxy group, cyano or fluoroform
Base.
4. non-aqueous electrolyte for lithium ion cell according to claim 1, which is characterized in that change shown in the structural formula 1
It closes object A and is selected from following compound:
5. non-aqueous electrolyte for lithium ion cell according to claim 1, which is characterized in that the pyridines complex chemical compound
Selected from 3 compound represented C of 2 compound represented B of structural formula and/or structural formula:
R7-R16It is each independently selected from hydrogen atom, halogen atom, cyano or the alkyl containing 1-5 carbon atom.
6. non-aqueous electrolyte for lithium ion cell according to claim 5, which is characterized in that change shown in the structural formula 2
It closes object B and is selected from following compound:
The 3 compound represented C of structural formula is selected from following compound:
7. non-aqueous electrolyte for lithium ion cell according to claim 1, which is characterized in that non-aqueous with the lithium ion battery
The gross mass of electrolyte is 100% meter, and the mass percentage of the compound A is 0.1%~5.0%, and the pyridines are multiple
The mass percentage of polymerisable compounds is 0.1%~5.0%.
8. non-aqueous electrolyte for lithium ion cell according to claim 1, which is characterized in that the nonaqueous electrolytic solution further includes
Unsaturated cyclic carbonic ester, fluoric cyclic carbonate, cyclic annular at least one of sultones and cyclic sulfates.
9. non-aqueous electrolyte for lithium ion cell according to claim 8, which is characterized in that the unsaturated cyclic carbonic ester
Including at least one of vinylene carbonate, vinylethylene carbonate, mesomethylene carbon vinyl acetate；
The fluoric cyclic carbonate includes fluorinated ethylene carbonate, trifluoromethyl ethylene carbonate and difluoroethylene carbonate
At least one of；
The ring-type sultones includes in 1,3- propane sultone, 1,4- butane sultone and acrylic -1,3- sultones
At least one；
The cyclic sulfates are selected from least one of sulfuric acid vinyl ester and 4- methylsulfuric acid vinyl acetate.
10. a kind of lithium ion battery, which is characterized in that including anode, cathode, for be isolated the anode and the cathode every
Film and non-aqueous electrolyte for lithium ion cell as described in any one of claims 1 to 9.
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| PCT/CN2018/092971 WO2019128160A1 (en) | 2017-12-29 | 2018-06-27 | Non-aqueous electrolyte for lithium ion battery and lithium ion battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994027A (en) * | 2019-12-25 | 2020-04-10 | 湖州昆仑动力电池材料有限公司 | Lithium ion battery electrolyte with good high-temperature cycle characteristic and lithium ion battery |
| CN111509298A (en) * | 2020-06-01 | 2020-08-07 | 蜂巢能源科技有限公司 | Electrolyte functional additive for lithium ion battery, lithium ion battery electrolyte and lithium ion battery |
| CN112886061A (en) * | 2021-01-12 | 2021-06-01 | 宁德新能源科技有限公司 | Electrolyte and electrochemical device containing same |
| CN114156533A (en) * | 2022-02-10 | 2022-03-08 | 河南电池研究院有限公司 | Lithium ion battery gel electrolyte and preparation method of lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220099653A (en) * | 2021-01-07 | 2022-07-14 | 주식회사 엘지에너지솔루션 | Nonaqueous electrolyte for lithium secondary battery and lithium secondary battery comprising the same |
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| CN105680096B (en) * | 2016-01-11 | 2018-10-12 | 东莞新能源科技有限公司 | electrolyte and lithium ion battery including the electrolyte |
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| JP2015092476A (en) * | 2013-10-04 | 2015-05-14 | 旭化成株式会社 | Nonaqueous electrolyte, electrolyte for lithium ion secondary batteries and nonaqueous electrolyte battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994027A (en) * | 2019-12-25 | 2020-04-10 | 湖州昆仑动力电池材料有限公司 | Lithium ion battery electrolyte with good high-temperature cycle characteristic and lithium ion battery |
| CN110994027B (en) * | 2019-12-25 | 2022-05-13 | 湖州昆仑亿恩科电池材料有限公司 | Lithium ion battery electrolyte with good high-temperature cycle characteristic and lithium ion battery |
| CN111509298A (en) * | 2020-06-01 | 2020-08-07 | 蜂巢能源科技有限公司 | Electrolyte functional additive for lithium ion battery, lithium ion battery electrolyte and lithium ion battery |
| CN112886061A (en) * | 2021-01-12 | 2021-06-01 | 宁德新能源科技有限公司 | Electrolyte and electrochemical device containing same |
| CN114156533A (en) * | 2022-02-10 | 2022-03-08 | 河南电池研究院有限公司 | Lithium ion battery gel electrolyte and preparation method of lithium ion battery |
| CN114156533B (en) * | 2022-02-10 | 2022-04-22 | 河南电池研究院有限公司 | Lithium ion battery gel electrolyte and preparation method of lithium ion battery |
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| WO2019128160A1 (en) | 2019-07-04 |
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