CN103441304B - Lithium rechargeable battery and its electrolyte - Google Patents
Lithium rechargeable battery and its electrolyte Download PDFInfo
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- CN103441304B CN103441304B CN201310412256.9A CN201310412256A CN103441304B CN 103441304 B CN103441304 B CN 103441304B CN 201310412256 A CN201310412256 A CN 201310412256A CN 103441304 B CN103441304 B CN 103441304B
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Abstract
The invention discloses a kind of lithium rechargeable battery and its electrolyte, electrolyte includes lithium salts, non-aqueous organic solvent and additive, wherein, additive contains the compound shown in formula (1),In formula (1), m is 0~2 integer, and n is 1~3 integer, R1、R2、R3For hydrogen atom, fluorine atom or C1~C6 straight or branched alkyls or fluoro-alkyl, Rf1、Rf2、Rf3、Rf4For hydrogen atom or fluorine atom.Because compound shown in formula (1) can effectively improve positive pole/electrolyte interface, suppress oxidation Decomposition of the electrolyte in positive electrode surface, therefore the storage performance of lithium rechargeable battery under the high temperature conditions can be improved, and the deterioration of cycle performance of battery will not be caused so that the electrical property of lithium rechargeable battery of the present invention is significantly increased.
Description
Technical field
The invention belongs to field of lithium ion secondary, it is more particularly related to which a kind of have preferable height gentle
Store up the lithium rechargeable battery and its electrolyte of performance.
Background technology
Lithium rechargeable battery because have the advantages that operating voltage high, long lifespan and charging rate it is fast be widely used,
But with continuing to develop for technology, people propose higher requirement to the energy density of lithium rechargeable battery.
On the one hand, under fully charged state, the negative pole of lithium rechargeable battery has high reproducibility, just has high oxidation
Property.On the other hand, in actual use, the lasting of electronic product uses the factors such as heating, the rise of battery use environment temperature all
It may make at battery at high operating temperatures so that the positive pole of lithium rechargeable battery, negative reaction activity are further enhanced, its electricity
Solution liquid will react with negative pole, positive pole and produce gas.Cell expansion damage is not only resulted in, is also resulted in using battery
Device damage, even can cause internal short-circuit of battery due to cell expansion deformation when serious or be led because battery packages burst
Electrolyte leakage is caused, occurs the security incidents such as fire.It can be seen that, decomposition, battery flatulence of electrolyte etc. are urgently solved as industry
Certainly the problem of.
At present, in order to further improve the energy density of lithium rechargeable battery, the high positive pole material of some nickel element contents
Material, such as lithium nickel cobalt aluminum oxide, the lithium nickel cobalt manganese oxide of high nickel content are had been developed that applied to lithium rechargeable battery；
In addition, improving the charge cutoff voltage of lithium rechargeable battery, positive pole is deviate from higher proportion of lithium ion can also obtain more
High capacity, reaches the demand for improving battery energy density.But, above two method can all improve the oxidability of positive pole,
Cause the problem of oxidation of electrolyte even more serious.Therefore, positive electrode for this high-energy or the application of higher voltage,
Solving the resolution problem of electrolyte becomes particularly urgent.
The decomposition of electrolyte is used as positive active material mainly due in the lithium rechargeable battery charged
Metal oxide very strong oxidisability is shown under high potential, it is easy to electrolyte occur oxidation reaction and make its point
Solution, it is seen then that it is to solve lithium rechargeable battery high-temperature storage performance to suppress the oxidation reaction between electrolyte and positive electrode
It is crucial.
In the prior art, it is typically employed in the mode that succinonitrile or adiponitrile are added in electrolyte of lithium-ion secondary battery
To improve its high-temperature storage performance, still, improvement is very limited；In addition, it is thus proposed that use alkene nitrile compounds conduct
Electrolyte of lithium-ion secondary battery additive, although such additive can effectively improve the high gentle of lithium rechargeable battery
Performance is stored up, but but is degrading its cycle performance.
In view of this, it is necessary to which a kind of storage performance and cycle performance under high voltage hot conditions all good lithiums are provided
Ion secondary battery and its electrolyte.
The content of the invention
It is an object of the invention to：There is provided a kind of storage performance and cycle performance under high voltage hot conditions all good
Lithium rechargeable battery and its electrolyte, to effectively improve the electrical property of lithium rechargeable battery.
In order to realize foregoing invention purpose, inventor has found to add the compound shown in formula (1) by concentrating on studies
Into electrolyte of lithium-ion secondary battery, it can significantly improve the storage characteristics under battery high-temperature.Accordingly, the invention provides one
Electrolyte of lithium-ion secondary battery is planted, it includes lithium salts, non-aqueous organic solvent and additive, and the additive contains formula (1)
Shown compound,
In formula (1), m is 0~2 integer, and n is 1~3 integer, R1、R2、R3For hydrogen atom, fluorine atom or C1~C6
Straight or branched alkyl, wherein, the hydrogen atom in C1~C6 straight or branched alkyl partly or entirely can be taken by fluorine atom
Generation, Rf1、Rf2、Rf3、Rf4For hydrogen atom or fluorine atom；M is more than 2 or n and is more than 3, can all reduce the high-temperature storage performance of battery.
Compound shown in formula (1) improves battery high-temperature storage characteristics and does not influence the mechanism of cycle performance of battery still to fail to understand
Really, it is believed that be the reason for possible：1) cyano group in compound structure can effectively with high-valency metal atom (Ni, Co, Mn etc.) network
Close, the complexing of N atoms and high-valency metal atom (Ni, Co, Mn etc.) significantly reduces high-valency metal atoms electrolyte
Ability；2) when the cyano group in compound structure and positive pole are complexed, olefin functionalities can be by polymerisation in positive electrode surface shape
Into passivating film, the ability of high-valency metal atoms electrolyte reduce further；3) due to introducing ester in the molecular structure
Base functional group, further improves the interface interaction of pole piece and electrolyte so that battery has good cycle performance.Therefore,
Compound shown in formula (1) reduces the reaction of positive pole and electrolyte, so as to effectively improve the storage of battery at high temperature
Performance, and cycle performance of battery is not influenceed.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, compound shown in the formula (1) is preferably
Compound shown in formula (2),
In the formula (2), m, n, R1、R2、R3It is identical with formula (1).
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, compound shown in the formula (1) is preferably
Compound shown in formula (3),
In the formula (3), n is 1~3 natural number, R1、R2、R3For C1~C4 straight or branched alkyls.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, compound shown in the formula (1) is preferably
Compound or its combination shown in formula (4)~(25),
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, compound shown in the formula (1) is in electrolysis
Weight percentage in liquid is 0.2%~5%, preferably 0.5%~2.5%.Because, if electrolyte formula of
(1) compounds content shown in is excessive, and the C=C in its structure forms blocked up passivating film by polymerization, causes the impedance of battery to become
Greatly, the cycle characteristics of battery is influenceed；If compounds content shown in electrolyte formula of (1) is very few, the C=C official in its structure
Can roll into a ball can not form the passivating film of effective densification, the reaction of electrolyte and positive plate also cannot effectively be prevented, so that can not
Effectively improve the high-temperature storage performance of battery.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, the non-aqueous organic solvent contains cyclic carbonate
And linear carbonate, the weight percentage of cyclic carbonate in the electrolytic solution is 10%~70%, and linear carbonate is in electrolysis
Weight percentage in liquid is 15%~80%.Because cyclic carbonate have higher dielectric constant, can very well with
Lithium ion formation solvation lithium ion molecule；Ol ester has relatively low viscosity, it is possible to increase electrolyte flow and wellability.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, the cyclic carbonate of the non-aqueous organic solvent
Ethylene carbonate, propene carbonate, dimethyl carbonate, butyl lactone, butylene, diethyl carbon are selected from linear carbonate
Acid esters, dipropyl carbonate, methyl ethyl carbonate, methyl propyl carbonate, ethyl propyl carbonic acid ester or its combination.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, the lithium salts is selected from LiPF6、LiBF4、LiN
(CxF2x+1SO2)(CyF2y+1SO2)、LiBOB、LiAsF6、Li(CF3SO2)2N、LiCF3SO3、LiClO4Or its combination, wherein, x, y
For natural number.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, the concentration of the lithium salts is 0.5M~2M.
Improved as one kind of electrolyte of lithium-ion secondary battery of the present invention, organic sulfoxide class is also contained in the electrolyte
The sub- alkene based compound of compound, sulfonates compounds, halogenated cyclic carbonats compound, carbonic acid, cyano compound or its
Combination.
In order to realize foregoing invention purpose, present invention also offers a kind of lithium rechargeable battery, it includes positive plate, born
Pole piece, the barrier film being interval between positive plate and negative plate, and electrolyte, wherein, electrolyte is any of the above paragraph institute
The electrolyte stated.
Compared with prior art, compound, energy shown in the formula (1) added in electrolyte of lithium-ion secondary battery of the present invention
Positive pole/electrolyte interface is effectively improved, suppresses oxidation Decomposition of the electrolyte in positive electrode surface, so as to improve lithium rechargeable battery
Storage performance under the high temperature conditions, and the deterioration of cycle performance of battery, therefore lithium ion secondary of the present invention electricity will not be caused
The electrical property in pond is significantly increased.
Embodiment
In order that goal of the invention, technical scheme and the advantageous effects of the present invention become apparent from, with reference to embodiments,
The present invention will be described in further detail.It should be appreciated that the embodiment described in this specification is merely to explain this
Invention, is not intended to limit the present invention, formula, the ratio of embodiment etc. can suit measures to local conditions to make a choice and have no essence to result
Property influence.
Embodiment 1
The preparation of positive plate：By cobalt acid lithium, conductive agent SuperP, bonding agent PVDF in mass ratio 96:2.0:2.0 mixing are equal
The even anode paste of Li-ion secondary battery that certain viscosity is made, is coated in current collector aluminum foil, and coating weight is 0.0194g/
cm2, it is cold-pressed after being dried at 85 DEG C；Then carry out after trimming, cut-parts, slitting, 85 DEG C of drying 4 are small under vacuum
When, the lithium-ion secondary battery positive plate for meeting and requiring is made in soldering polar ear.
The preparation of negative plate：By graphite and conductive agent SuperP, thickener CMC, bonding agent SBR in mass ratio 96.5:
1.0:1.0:1.5 are made slurry, are coated on copper foil of affluxion body and are dried at 85 DEG C, coating weight is 0.0089g/cm2；Carry out
After trimming, cut-parts, slitting, dry 4 hours for 110 DEG C under vacuum, the lithium ion secondary for meeting and requiring is made in soldering polar ear
Battery cathode sheet.
The preparation of electrolyte：Lithium hexafluoro phosphate (LiPF of the electrolyte using concentration as 1M6) it is lithium salts, with ethylene carbonate
(EC), the mixture of propene carbonate (PC) and diethyl carbonate (DEC) is solvent, and the mass ratio of each carbonic ester is EC:PC:
DEC=30:30:40.In addition, also containing compound shown in the formula (5) that weight/mass percentage composition is 1% in electrolyte as addition
Agent.
The preparation of lithium rechargeable battery：By the positive plate, negative plate and barrier film that are prepared according to previous process through pulleying
Winding technologe is fabricated to thickness 4.2mm, width 34mm, length 82mm lithium rechargeable battery, and vacuum bakeout 10 is small at 75 DEG C
When, injection electrolyte, standing, with 0.1C (160mA) constant current charge to 4.2V, are then filled after 24 hours with 4.2V constant pressures
Electricity to electric current drops to 0.05C (80mA)；Then 3.0V is discharged to 0.1C (160mA), is repeated 2 times discharge and recharge, finally again with
Battery is charged to 3.85V by 0.1C (160mA), is completed battery and is made.
Embodiment 2
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The compound shown in the formula of of embodiment 1 (5) is replaced using compound shown in formula (4).
Embodiment 3
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The compound shown in the formula of of embodiment 1 (5) is replaced using compound shown in formula (6).
Embodiment 4
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The compound shown in the formula of of embodiment 1 (5) is replaced using compound shown in formula (11).
Embodiment 5
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The compound shown in the formula of of embodiment 1 (5) is replaced using compound shown in formula (19).
Embodiment 6
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The usage amount of compound is account for electrolyte quality percentage composition 0.2% shown in formula (5).
Embodiment 7
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The usage amount of compound is account for electrolyte quality percentage composition 5% shown in formula (5).
Embodiment 8
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The usage amount of compound is account for electrolyte quality percentage composition 0.5% shown in formula (5).
Embodiment 9
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
The usage amount of compound is account for electrolyte quality percentage composition 2.5% shown in formula (5).
Comparative example 1
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
It is added without any additive.
Comparative example 2
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
Use quality percentage composition replaces the compound shown in the formula of of embodiment 1 (5) to be used as additive for 1% acrylonitrile.
Comparative example 3
Lithium rechargeable battery is prepared with reference to the method for embodiment 1, simply when preparing electrolyte of lithium-ion secondary battery,
Use quality percentage composition replaces the compound shown in the formula of of embodiment 1 (5) to be used as additive for 2.5% acrylonitrile.
Illustrate the lithium ion two using electrolyte of lithium-ion secondary battery additive of the present invention below by way of experimental data
The high-temperature storage performance and cycle performance of primary cell.
High-temperature storage characteristics are tested
For lithium rechargeable battery made from embodiment 1~9 and comparative example 1~3, first with the constant of 0.1C (160mA)
Electric current charges to 4.2V to lithium rechargeable battery, and electric current is then charged under 4.2V constant voltages less than 0.05C (80mA).
The thickness of lithium rechargeable battery, is then stored in 85 DEG C of environment, after 24 hours again before test storage
Measure its thickness.The high-temperature storage performance of lithium rechargeable battery is evaluated by its thickness swelling, the meter of thickness swelling
Calculating formula is：Thickness swelling (%)=[thickness before (thickness before thickness-storage after storage)/storage] * 100%；It is real
The result for testing gained is as shown in table 1.
The high-temperature storage characteristics result of the test of table 1
| Battery | Additive | Weight/mass percentage composition | Thickness swelling (%) |
| Embodiment 1 | Compound shown in formula (5) | 1.0% | 14 |
| Embodiment 2 | Compound shown in formula (4) | 1.0% | 16 |
| Embodiment 3 | Compound shown in formula (6) | 1.0% | 17 |
| Embodiment 4 | Compound shown in formula (11) | 1.0% | 17 |
| Embodiment 5 | Compound shown in formula (19) | 1.0% | 15 |
| Embodiment 6 | Compound shown in formula (5) | 0.2% | 22 |
| Embodiment 7 | Compound shown in formula (5) | 5.0% | 8 |
| Embodiment 8 | Compound shown in formula (5) | 0.5% | 17 |
| Embodiment 9 | Compound shown in formula (5) | 2.5% | 11 |
| Comparative example 1 | Nothing | 0% | 56 |
| Comparative example 2 | Acrylonitrile | 1.0% | 12 |
| Comparative example 3 | Acrylonitrile | 2.5% | 9 |
As can be seen from Table 1：Compound shown in formula (1) is added in electrolyte of lithium-ion secondary battery and is used as addition
Agent, can effectively improve the high-temperature storage performance of lithium rechargeable battery.Contrast from embodiment 1,6~9 and comparative example 1 can
To find out：Compound shown in 0.2% formula (5) is with the addition of in electrolyte of lithium-ion secondary battery to be carried well
The high-temperature storage performance of high-lithium ion secondary cell；When the matter of compound shown in electrolyte of lithium-ion secondary battery formula of (5)
When amount percentage composition increases to 1%, the high-temperature storage performance of lithium rechargeable battery can be effectively improved.From embodiment 1, in fact
Example 9, comparative example 2~3 is applied to can be seen that：The high-temperature storage performance of compound shown in the formula (5) of same amount is slightly better than propylene
Nitrile.
Cycle performance is tested
For lithium rechargeable battery made from embodiment 1~9 and comparative example 1~3, under the conditions of 25 DEG C and 45 DEG C first with
0.7C (1120mA) constant current charges to 4.2V to lithium rechargeable battery, then in 4.2V constant-potential charges to electric current
Less than 0.05C (80mA), 3.0V is then discharged to lithium rechargeable battery with 0.5C (800mA) constant current, this is put
Capacitance is first time cyclic discharge capacity.Battery is subjected to cycle charge discharge electrical testing in a manner described, the 400th circulation is taken
Discharge capacity.
The high temperature cyclic performance of lithium rechargeable battery is evaluated by its capability retention, the calculation formula of capability retention
For：Capability retention (%)=[discharge capacity of the discharge capacity of the 400th circulation/first time circulation] * 100%；Experiment institute
The result obtained is as shown in table 2.
The ycle characteristics test result of table 2
As can be seen from Table 2：
1) contrast from embodiment 1~5,6,8,9 and comparative example 1~3 can be seen that：In electrolyte of lithium-ion secondary battery
Compound will not only cause the deterioration of lithium rechargeable battery cycle performance, instead as additive shown in middle addition formula (1)
And improve its cycle performance at 45 DEG C；
2) contrast from embodiment 1,6~9 and comparative example 1 can be seen that：Added in electrolyte of lithium-ion secondary battery
Compound Compound shown in 2.5% formula (5), will not substantially deteriorate 25 DEG C of cycle performances of lithium rechargeable battery；But,
When the weight/mass percentage composition of compound shown in electrolyte of lithium-ion secondary battery formula of (5) increases to 5%, then substantially deteriorate
25 DEG C of cycle performances of lithium rechargeable battery；Compound shown in formula (5) is added in electrolyte of lithium-ion secondary battery
There is improvement result to cycle performance of the battery at 45 DEG C.
Comprehensive Tables 1 and 2, can be seen that from embodiment 1, embodiment 9, comparative example 2 and comparative example 3：The third of same amount
When olefin(e) acid 3- hydroxypropionitriles ester and acrylonitrile are as additive, the high-temperature storage performance of battery is equally excellent, but uses propylene
Acid is degrading the cycle performance of battery, then has good cycle performance using the battery of acrylic acid 3- hydroxypropionitrile esters.
Although it is pointed out that only right by taking formula (4)~(6), (11) and (19) as an example in the embodiment of this specification
The additive of electrolyte of lithium-ion secondary battery of the present invention is illustrated, still, in other embodiments of the invention, lithium from
The additive of sub- secondary cell electrolyte can also be the mixed of any of which representated by formula (1) or two or more compounds
Compound；Although only with LiPF in the embodiment of this specification6Exemplified by electrolyte of lithium-ion secondary battery of the present invention is said
Bright, still, according to the other embodiment of lithium rechargeable battery of the present invention, the lithium salts in electrolyte can also be LiN
(CxF2x+1SO2)(CyF2y+1SO2)、LiPF6、LiBF4、LiBOB、LiAsF6、Li(CF3SO2)2N、LiCF3SO3、LiClO4Or it is above-mentioned
The combination of lithium salts；1M is also only lithium salts LiPF in lithium rechargeable battery6Typical concentrations, lithium salts in different embodiments
Concentration can be 0.5M~2M between arbitrary value；In addition, non-aqueous organic solvent can be selected from ethylene carbonate, propylene carbonate
Ester, dimethyl carbonate, butyl lactone, butylene, diethyl carbonate, dipropyl carbonate, methyl ethyl carbonate, carbonic acid first
Propyl ester, ethyl propyl carbonic acid ester or its combination.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, the invention is not limited in embodiment disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.Although in addition, this specification
In used some specific terms, but these terms are merely for convenience of description, do not constitute any limitation to the present invention.
Claims (11)
1. a kind of electrolyte of lithium-ion secondary battery, including lithium salts, non-aqueous organic solvent and additive, it is characterised in that：It is described
Additive contains the compound shown in formula (1),
In formula (1), m is 0~2 integer, and n is 1~3 integer, R1、R2、R3For hydrogen atom, fluorine atom or C1~C6 straight chains
Or branched alkyl, wherein, the hydrogen atom in C1~C6 straight or branched alkyl can be partly or entirely replaced by fluorine atoms,
Rf1、Rf2、Rf3、Rf4For hydrogen atom or fluorine atom.
2. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：Chemical combination shown in the formula (1)
Thing is the compound shown in formula (2),
In the formula (2), m, n, R1、R2、R3It is identical with formula (1).
3. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：Chemical combination shown in the formula (1)
Thing is the compound shown in formula (3),
In the formula (3), n is 1~3 natural number, R1、R2、R3For C1~C4 straight or branched alkyls.
4. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：Chemical combination shown in the formula (1)
Thing is the compound or its combination shown in formula (4)~(25),
5. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：Chemical combination shown in the formula (1)
The weight percentage of thing in the electrolytic solution is 0.2%~5%.
6. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：Chemical combination shown in the formula (1)
The weight percentage of thing in the electrolytic solution is 0.5%~2.5%.
7. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：The non-aqueous organic solvent contains ring
Shape carbonic ester and linear carbonate, the weight percentage of cyclic carbonate in the electrolytic solution are 10%~70%, chain carbonic acid
The weight percentage of ester in the electrolytic solution is 15%~80%.
8. electrolyte of lithium-ion secondary battery according to claim 7, it is characterised in that：The ring of the non-aqueous organic solvent
Shape carbonic ester and linear carbonate be selected from ethylene carbonate, propene carbonate, dimethyl carbonate, butyl lactone, butylene,
Diethyl carbonate, dipropyl carbonate, methyl ethyl carbonate, methyl propyl carbonate, ethyl propyl carbonic acid ester or its combination.
9. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：The lithium salts is selected from LiN
(CxF2x+1SO2)(CyF2y+1SO2)、LiPF6、LiBF4、LiBOB、LiAsF6、Li(CF3SO2)2N、LiCF3SO3、LiClO4Or its group
Close, wherein, x, y is natural number, and the concentration of lithium salts is 0.5M~2M.
10. electrolyte of lithium-ion secondary battery according to claim 1, it is characterised in that：Also contain in the electrolyte
The sub- alkene based compound of organic sulfone compound, sulfonates compounds, halogenated cyclic carbonats compound, carbonic acid, cyano group
Compound or its combination.
11. a kind of lithium rechargeable battery, including positive plate, negative plate, the barrier film that is interval between positive plate and negative plate,
And electrolyte, it is characterised in that：The electrolyte is the electrolyte any one of claim 1 to 10.
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| CN105428715B (en) | 2015-11-04 | 2018-06-08 | 深圳新宙邦科技股份有限公司 | A kind of non-aqueous electrolyte for lithium ion cell and lithium ion battery |
| CN110247114A (en) * | 2015-12-18 | 2019-09-17 | 深圳新宙邦科技股份有限公司 | A kind of electrolyte for lithium ion battery and lithium ion battery |
| CN108808065B (en) | 2017-04-28 | 2020-03-27 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN108808086B (en) * | 2017-04-28 | 2020-03-27 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN108808066B (en) | 2017-04-28 | 2020-04-21 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN108808084B (en) | 2017-04-28 | 2020-05-08 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN108933292B (en) | 2017-05-27 | 2020-04-21 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN109326824B (en) | 2017-07-31 | 2020-04-21 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN109326823B (en) | 2017-07-31 | 2020-04-21 | 深圳新宙邦科技股份有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
| CN109802176B (en) * | 2017-11-16 | 2022-04-22 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN110970662B (en) * | 2018-09-28 | 2021-09-21 | 宁德时代新能源科技股份有限公司 | Non-aqueous electrolyte and lithium ion battery |
| CN114556658B (en) * | 2019-10-07 | 2024-05-28 | 三菱化学株式会社 | Nonaqueous electrolyte solution and nonaqueous electrolyte secondary battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003317540A (en) * | 2002-04-22 | 2003-11-07 | Nippon Kayaku Co Ltd | Resin composition for polymer solid electrolyte, polymer solid electrolyte and polymer cell |
| CN1289557C (en) * | 2001-01-05 | 2006-12-13 | 三星Sdi株式会社 | Polymer electrolyte and secondary lithium cell with the electrolyte |
| CN102468516A (en) * | 2010-11-09 | 2012-05-23 | 张家港市国泰华荣化工新材料有限公司 | Electrolyte for improving high and low temperature performance of lithium batteries and application thereof |
| CN102498605A (en) * | 2009-09-15 | 2012-06-13 | 宇部兴产株式会社 | Nonaqueous electrolyte solution and electrochemical element using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1289557C (en) * | 2001-01-05 | 2006-12-13 | 三星Sdi株式会社 | Polymer electrolyte and secondary lithium cell with the electrolyte |
| JP2003317540A (en) * | 2002-04-22 | 2003-11-07 | Nippon Kayaku Co Ltd | Resin composition for polymer solid electrolyte, polymer solid electrolyte and polymer cell |
| CN102498605A (en) * | 2009-09-15 | 2012-06-13 | 宇部兴产株式会社 | Nonaqueous electrolyte solution and electrochemical element using same |
| CN102468516A (en) * | 2010-11-09 | 2012-05-23 | 张家港市国泰华荣化工新材料有限公司 | Electrolyte for improving high and low temperature performance of lithium batteries and application thereof |
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