CN108470947A - For lithium battery electrolytes anti-overcharge additive and include its lithium battery electrolytes - Google Patents
For lithium battery electrolytes anti-overcharge additive and include its lithium battery electrolytes Download PDFInfo
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- CN108470947A CN108470947A CN201810292647.4A CN201810292647A CN108470947A CN 108470947 A CN108470947 A CN 108470947A CN 201810292647 A CN201810292647 A CN 201810292647A CN 108470947 A CN108470947 A CN 108470947A
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- lithium battery
- battery electrolytes
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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
- 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
-
- 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 present invention provides a kind of anti-overcharge additive for lithium battery electrolytes and comprising its lithium battery electrolytes, it is related to technical field of lithium ion.Above-mentioned anti-overcharge additive is mainly made of biphenyl, cyclohexyl benzene, DfBP, fluorobenzene and difluorophosphate, and wherein biphenyl, cyclohexyl benzene and DfBP can make battery core persistently have corresponding overcharging additive to react in overcharge different voltages section as voltolisation mould assembly compound；Meanwhile fluorobenzene interacts with cyclohexyl benzene, can reduce the electropolymerization film forming impedance level in low-voltage section cyclohexyl benzene；Difluorophosphate is added, can be reduced since addition impedance caused by the micro film forming of battery core normal use voltage section of the overcharging additives such as biphenyl, cyclohexyl benzene, DfBP, fluorobenzene increases.Further, including the thermal shock that the lithium battery electrolytes of above-mentioned anti-overcharge additive can mildly block overcharge that may occur is burst, and then penalty of battery core under the conditions of overcharging is avoided.
Description
Technical field
The present invention relates to technical field of lithium ion, add for the anti-overcharge of lithium battery electrolytes more particularly, to a kind of
Add agent and the lithium battery electrolytes comprising it.
Background technology
With the continuous development of lithium ion battery demand, the charge cutoff voltage of battery core is continuously improved in designer, or changes
The structure (such as tertiary cathode material constantly develops to nickelic direction) of material, to realize higher energy density requirement.Raising is filled
Electric blanking voltage changes material and mixes than inevitably making the continuous reduction of the thermal stability of core material.
Overcharge test, it is intended that battery core caused by simulation battery core is possible in the case of the component failures such as charger, protection board
Overcharge situation, this test one is to being that lithium-ion electric core tests difficult point, especially for lacking to explosion-proof valve, fuse etc.
The Soft Roll lithium-ion electric core of structural defence design.When battery core overcharge, the lithium ion in anode is excessively deviate from, and positive knot is caused
Structure caves in, and the structure of unstability is at Strong oxdiative state, and strong oxidation is generated to electrolyte, isolation film.Simultaneously
It is largely precipitated in negative terminal surface from the lithium ion of anode abjection and forms Li dendrite, the lithium of strong reduction-state equally has electrolyte
Reaction.The strong a large amount of heat of redox reaction release of inside battery in this way, along with battery itself produces in charging process
Raw Joule heat causes battery core high temperature to increase, and causes the decomposition of SEI films, internal short-circuit, electrolyte point occur for isolation film melting
The series reactions such as solution, to cause battery core thermal failure.
Therefore, the problem of encountering under environment is overcharged above-mentioned according to lithium ion battery, researchs and develops a kind of lithium battery
The anti-overcharge additive for solving liquid, by the different voltages section sustained response when overcharging, the mild heat for blocking overcharge that may occur
It routs, becomes very necessary and urgent.
In view of this, special propose the present invention.
Invention content
The first object of the present invention is to provide a kind of anti-overcharge additive for lithium battery electrolytes, described anti-overcharge
Additive by the different voltages section sustained response when overcharging, burst, and then avoids by the mild thermal shock for blocking overcharge that may occur
Penalty of battery core under the conditions of overcharging.
The second object of the present invention is to provide a kind of lithium battery electrolytes, and the lithium battery electrolytes include above-mentioned be used for
The anti-overcharge additive of lithium battery electrolytes, above-mentioned lithium battery electrolytes can mildly block the thermal shock that overcharge may occur
It bursts, and then avoids penalty of battery core under the conditions of overcharging.
A kind of anti-overcharge additive for lithium battery electrolytes provided by the invention, the anti-overcharge additive mainly by
Biphenyl, cyclohexyl benzene, DfBP, fluorobenzene and difluorophosphate composition.
Further, it counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：Biphenyl 10~30
Part, 10~30 parts of cyclohexyl benzene, 30~50 parts of DfBP, 80~120 parts of fluorobenzene and 2~10 parts of difluorophosphate.
Further, it counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：Biphenyl 15~25
Part, 15~25 parts of cyclohexyl benzene, 35~45 parts of DfBP, 90~110 parts of fluorobenzene and 3~8 parts of difluorophosphate.
Further, it counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：Biphenyl 18~22
Part, 18~22 parts of cyclohexyl benzene, 38~42 parts of DfBP, 95~105 parts of fluorobenzene and 5~6 parts of difluorophosphate；
Preferably, it counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：20 parts of biphenyl, hexamethylene
5 parts of 20 parts of base benzene, 40 parts of DfBP, 100 parts of fluorobenzene and difluorophosphate.
A kind of lithium battery electrolytes provided by the invention, the electrolyte include the above-mentioned anti-mistake for lithium battery electrolytes
Fill additive.
Further, the anti-overcharge additive accounts for 10~20wt% of lithium battery electrolytes quality.
Further, the lithium battery electrolytes further include lithium salts and organic solvent.
Further, the lithium salts is lithium hexafluoro phosphate.
Further, molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes is 1.0~1.5 mol/L.
Further, the organic solvent is carbonate based organic solvent.
Compared with prior art, beneficial effects of the present invention are：
Mainly joined by biphenyl, cyclohexyl benzene, difluoro provided by the present invention for the anti-overcharge additive of lithium battery electrolytes
Benzene, fluorobenzene and difluorophosphate composition.Biphenyl, cyclohexyl benzene and DfBP are as voltolisation mould assembly in the anti-overcharge additive
Closing object can make battery core persistently have corresponding overcharging additive to react in overcharge different voltages section.Meanwhile fluorobenzene and cyclohexyl
Benzene interacts, the appropriate electropolymerization film forming impedance level reduced in low-voltage section cyclohexyl benzene, in case battery core is charging normal
Overcharging additive is at the excessive influence battery core performance of membrane impedance in voltage range；Difluorophosphate is added, is reduced due to biphenyl, hexamethylene
The addition of the overcharging additives such as base benzene, DfBP, fluorobenzene impedance caused by the micro film forming of battery core normal use voltage section increases
Add, and then improves the low temperature, high temperature, cycle performance of battery core.
Lithium battery electrolytes provided by the invention, the lithium battery electrolytes include above-mentioned for the anti-of lithium battery electrolytes
Overcharging additive, the thermal shock that above-mentioned lithium battery electrolytes can mildly block overcharge that may occur is burst, and then avoids battery core
Penalty under the conditions of overcharging.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is a part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
According to an aspect of the present invention, a kind of anti-overcharge additive for lithium battery electrolytes, it is described anti-overcharge to add
Agent is added mainly to be made of biphenyl, cyclohexyl benzene, DfBP, fluorobenzene and difluorophosphate.
Above-mentioned each component act as in the anti-overcharge additive of the present invention：
Biphenyl (BP) is as a kind of non-oxide reduction shuttle type compound：When overcharge is to 4.5~4.6V, in positive electrode surface
Voltolisation occurs and synthesizes conductive film, on the one hand the effect of biphenyl in the present invention is to prevent the positive contact between electrolyte, drop
Low reaction heat production；Second is that conductive film, which can penetrate diaphragm, reaches negative terminal surface, the internal short-circuit of battery, prevention is caused to fill battery
To higher voltage；Third, excessive gas and heat that electroxidation polymerization generates help to improve the sensitivity of opens device；
Cyclohexyl benzene (CHB) is as a kind of non-oxide reduction shuttle type compound, when overcharge, is aggregated on cathode
On the one hand film prevents the contact between cathode and electrolyte, reduce reaction heat, on the other hand the proton transfer of reaction release to anode
And hydrogen is generated, overcharge protection using phenomenon realization；Compared to biphenyl, local hydriding, which acts on, in aromatic compound makes p
Electron-conjugated system shrinks and forms higher oxidizing potential, can improve the full electric storage performance of high temperature of battery；
The similar biphenyl of DfBP (2F-BP)-, is similarly a kind of non-oxide reduction shuttle type compound, response voltage
0.2V more slightly higher than biphenyl or so；
Fluorobenzene (FB) is positive electropolymerization additive in the present invention, by being passivated anode, increases internal resistance, when reduction overcharges
Reaction between anode and electrolyte starts oxygenolysis in 6V or so, can be used cooperatively with cyclohexyl benzene
Difluorophosphate (LiPO2F2) is a kind of inorganic lithium salt, it can reduce impedance in the present invention, improves low temperature properties
Can, significantly improve room temperature and cycle.
Biphenyl, cyclohexyl benzene and DfBP can form a wider electricity as voltolisation mould assembly compound in the present invention
Range (4.5V~5.5V) is pressed, battery core is made persistently to have corresponding overcharging additive to react in overcharge different voltages section.Meanwhile fluorine
Benzene interacts with cyclohexyl benzene, the appropriate electropolymerization film forming impedance level reduced in low-voltage section cyclohexyl benzene, in order to avoid battery core
Overcharging additive is at the excessive influence battery core performance of membrane impedance within the scope of nominal charging voltage；Add difluorophosphate, reduce by
It is led in the micro film forming of battery core normal use voltage section in the addition of the overcharging additives such as biphenyl, cyclohexyl benzene, DfBP, fluorobenzene
The impedance of cause increases, and improves the low temperature, high temperature, cycle performance of battery core.Therefore, anti-overcharge additive provided by the invention by
Different voltages section sustained response when overcharging, the mild thermal shock for blocking overcharge that may occur is burst, and then is avoided battery core and overcharged
Under the conditions of penalty.
In the preferred embodiment of the present invention, it counts in parts by weight, the anti-overcharge additive is mainly by following
Group is grouped as：10~30 parts of biphenyl, 10~30 parts of cyclohexyl benzene, 30~50 parts of DfBP, 80~120 parts of fluorobenzene and difluoro
2~10 parts of lithium phosphate.
In the present invention, the above-mentioned typical but non-limiting content of biphenyl is：10 parts, 15 parts, 20 parts, 25 parts or 30 parts.
In the present invention, the above-mentioned typical but non-limiting content of cyclohexyl benzene is：10 parts, 15 parts, 20 parts, 25 parts or 30
Part.
In the present invention, the above-mentioned typical but non-limiting content of DfBP is：30 parts, 35 parts, 38 parts, 42 parts, 45
Part, 48 parts or 50 parts.
In the present invention, the above-mentioned typical but non-limiting content of fluorobenzene is：80 parts, 90 parts, 100 parts, 110 parts or 120
Part.
In the present invention, the above-mentioned typical but non-limiting content of difluorophosphate is：2 parts, 4 parts, 6 parts, 8 parts or 10 parts.
In the preferred embodiment of the present invention, it counts in parts by weight, the anti-overcharge additive is mainly by following
Group is grouped as：15~25 parts of biphenyl, 15~25 parts of cyclohexyl benzene, 35~45 parts of DfBP, 90~110 parts of fluorobenzene and difluoro
3~8 parts of lithium phosphate.
It in above-mentioned preferred embodiment, counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：
18~22 parts of biphenyl, 18~22 parts of cyclohexyl benzene, 38~42 parts of DfBP, 95~105 parts of fluorobenzene and difluorophosphate 5~6
Part；
Preferably, it counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：20 parts of biphenyl, hexamethylene
5 parts of 20 parts of base benzene, 40 parts of DfBP, 100 parts of fluorobenzene and difluorophosphate.
In the present invention, by the further adjustment and optimization to each component raw material dosage ratio, to advanced optimize
Technique effect of the present invention for the anti-overcharge additive of lithium battery electrolytes.
According to an aspect of the present invention, a kind of lithium battery electrolytes, the electrolyte include above-mentioned for lithium battery
Solve the anti-overcharge additive of liquid.
The lithium battery electrolytes provided by the invention for including the above-mentioned anti-overcharge additive for lithium battery electrolytes, it is described
The thermal shock that electrolyte can mildly block overcharge that may occur is burst, and then is avoided performance of battery core under the conditions of overcharging and disliked
Change.
In the preferred embodiment of the present invention, the anti-overcharge additive account for lithium battery electrolytes quality 10~
20wt%.
In the present invention, above-mentioned anti-overcharge additive accounts for the typical but non-limiting content of lithium battery electrolytes mass percent
For：10wt%, 12wt%, 15wt%, 18wt% or 20wt%.
In the preferred embodiment of the present invention, the lithium battery electrolytes further include lithium salts and organic solvent.
In the preferred embodiment of the present invention, the lithium salts is lithium hexafluoro phosphate.
In above-mentioned preferred embodiment, molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes be 1.0~
1.5mol/L。
In the present invention, the typical but non-limiting content of molar concentration of above-mentioned lithium hexafluoro phosphate is：1.0 mol/L、
1.2mol/L, 1.3mol/L, 1.4mol/L or 1.5mol/L.
In the preferred embodiment of the present invention, the organic solvent is carbonate based organic solvent.
As a preferred embodiment, above-mentioned carbonate based organic solvent is by dimethyl carbonate (DMC), carbonic acid first
Base ethyl ester (EMC), ethylene carbonate (EC) and propene carbonate (PC) composition.
Preferably, the dimethyl carbonate (DMC), methyl ethyl ester (EMC), ethylene carbonate (EC) and carbonic acid
The volume ratio of acrylic ester (PC) is：4：6：6：1.
Technical scheme of the present invention is described further below in conjunction with embodiment.
Embodiment 1
A kind of anti-overcharge additive for lithium battery electrolytes is counted in parts by weight, and the anti-overcharge additive is main
It is composed of the following components：10 parts of 10 parts of biphenyl, 30 parts of cyclohexyl benzene, 50 parts of DfBP, 120 parts of fluorobenzene and difluorophosphate.
Embodiment 2
A kind of anti-overcharge additive for lithium battery electrolytes is counted in parts by weight, and the anti-overcharge additive is main
It is composed of the following components：2 parts of 30 parts of biphenyl, 10 parts of cyclohexyl benzene, 30 parts of DfBP, 80 parts of fluorobenzene and difluorophosphate.
Embodiment 3
A kind of anti-overcharge additive for lithium battery electrolytes is counted in parts by weight, and the anti-overcharge additive is main
It is composed of the following components：6 parts of 18 parts of biphenyl, 22 parts of cyclohexyl benzene, 42 parts of DfBP, 95 parts of fluorobenzene and difluorophosphate.
Embodiment 4
A kind of anti-overcharge additive for lithium battery electrolytes is counted in parts by weight, and the anti-overcharge additive is main
It is composed of the following components：5 parts of 22 parts of biphenyl, 18 parts of cyclohexyl benzene, 42 parts of DfBP, 105 parts of fluorobenzene and difluorophosphate.
Embodiment 5
A kind of anti-overcharge additive for lithium battery electrolytes is counted in parts by weight, and the anti-overcharge additive is main
It is composed of the following components：5 parts of 20 parts of biphenyl, 20 parts of cyclohexyl benzene, 40 parts of DfBP, 100 parts of fluorobenzene and difluorophosphate.
Embodiment 6
A kind of lithium battery electrolytes, the electrolyte include anti-overcharge additive, lithium salts and the organic solvent of embodiment 1；
The anti-overcharge additive accounts for the 10wt% of lithium battery electrolytes quality；
Molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes is 1.0mol/L；
The organic solvent be carbonate based organic solvent, the carbonate based organic solvent by dimethyl carbonate (DMC),
Methyl ethyl ester (EMC), ethylene carbonate (EC) and propene carbonate (PC) composition, volume ratio are：4：6：6：1.
Embodiment 7
A kind of lithium battery electrolytes, the electrolyte include anti-overcharge additive, lithium salts and the organic solvent of embodiment 2；
The anti-overcharge additive accounts for the 20wt% of lithium battery electrolytes quality；
Molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes is 1.5mol/L；
The organic solvent be carbonate based organic solvent, the carbonate based organic solvent by dimethyl carbonate (DMC),
Methyl ethyl ester (EMC), ethylene carbonate (EC) and propene carbonate (PC) composition, volume ratio are：4：6：6：1.
Embodiment 8
A kind of lithium battery electrolytes, the electrolyte include anti-overcharge additive, lithium salts and the organic solvent of embodiment 3；
The anti-overcharge additive accounts for the 12wt% of lithium battery electrolytes quality；
Molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes is 1.2mol/L；
The organic solvent be carbonate based organic solvent, the carbonate based organic solvent by dimethyl carbonate (DMC),
Methyl ethyl ester (EMC), ethylene carbonate (EC) and propene carbonate (PC) composition, volume ratio are：4：6：6：1.
Embodiment 9
A kind of lithium battery electrolytes, the electrolyte include anti-overcharge additive, lithium salts and the organic solvent of embodiment 4；
The anti-overcharge additive accounts for the 18wt% of lithium battery electrolytes quality；
Molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes is 1.4mol/L；
The organic solvent be carbonate based organic solvent, the carbonate based organic solvent by dimethyl carbonate (DMC),
Methyl ethyl ester (EMC), ethylene carbonate (EC) and propene carbonate (PC) composition, volume ratio are：4：6：6：1.
Embodiment 10
A kind of lithium battery electrolytes, the electrolyte include anti-overcharge additive, lithium salts and the organic solvent of embodiment 5；
The anti-overcharge additive accounts for the 15wt% of lithium battery electrolytes quality；
Molar concentration of the lithium hexafluoro phosphate in lithium battery electrolytes is 1.3mol/L；
The organic solvent be carbonate based organic solvent, the carbonate based organic solvent by dimethyl carbonate (DMC),
Methyl ethyl ester (EMC), ethylene carbonate (EC) and propene carbonate (PC) composition, volume ratio are：4：6：6：1.
Experimental example 1
To show that the thermal shock that lithium battery electrolytes of the present invention can mildly block overcharge that may occur is burst, and then avoid
Penalty of battery core under the conditions of overcharging.Existing spy is recycled the lithium battery electrolytes that embodiment 6~10 is prepared
Volt-ampere charge-discharge test research.It under conditions of 4.5~5.5V, can be covered in membrane surface, form fine and close barrier
Layer, hinders the progress reacted when overcharging, can not only overcharging resisting, and to the influence very little of normal charge and discharge behavior.
In conclusion the anti-overcharge additive of the present invention is mainly by biphenyl, cyclohexyl benzene, DfBP, fluorobenzene and difluoro phosphorus
Sour lithium composition, wherein biphenyl, cyclohexyl benzene and DfBP can make battery core in mistake as non-oxide reduction shuttle type compound
Charging different voltages section persistently has corresponding overcharging additive to react；Meanwhile fluorobenzene interacts with cyclohexyl benzene, can reduce
The electropolymerization film forming impedance level of low-voltage section cyclohexyl benzene；Difluorophosphate is added, can be reduced due to biphenyl, cyclohexyl
The addition of the overcharging additives such as benzene, DfBP, fluorobenzene impedance caused by the micro film forming of battery core normal use voltage section increases.
Further, including the lithium battery electrolytes of above-mentioned anti-overcharge additive can mildly block the thermal shock that overcharge may occur
It bursts, and then avoids penalty of battery core under the conditions of overcharging.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of anti-overcharge additive for lithium battery electrolytes, which is characterized in that the anti-overcharge additive is mainly by joining
Benzene, cyclohexyl benzene, DfBP, fluorobenzene and difluorophosphate composition.
2. the anti-overcharge additive according to claim 1 for lithium battery electrolytes, which is characterized in that in parts by weight
Meter, the anti-overcharge additive are mainly composed of the following components：10~30 parts of biphenyl, 10~30 parts of cyclohexyl benzene, DfBP
2~10 parts of 30~50 parts, 80~120 parts of fluorobenzene and difluorophosphate.
3. the anti-overcharge additive according to claim 2 for lithium battery electrolytes, which is characterized in that in parts by weight
Meter, the anti-overcharge additive are mainly composed of the following components：15~25 parts of biphenyl, 15~25 parts of cyclohexyl benzene, DfBP
3~8 parts of 35~45 parts, 90~110 parts of fluorobenzene and difluorophosphate.
4. the anti-overcharge additive according to claim 2 for lithium battery electrolytes, which is characterized in that in parts by weight
Meter, the anti-overcharge additive are mainly composed of the following components：18~22 parts of biphenyl, 18~22 parts of cyclohexyl benzene, DfBP
5~6 parts of 38~42 parts, 95~105 parts of fluorobenzene and difluorophosphate；
Preferably, it counts in parts by weight, the anti-overcharge additive is mainly composed of the following components：20 parts of biphenyl, cyclohexyl benzene
5 parts of 20 parts, 40 parts of DfBP, 100 parts of fluorobenzene and difluorophosphate.
5. a kind of lithium battery electrolytes, which is characterized in that the electrolyte includes that Claims 1 to 4 any one of them is used for
The anti-overcharge additive of lithium battery electrolytes.
6. lithium battery electrolytes according to claim 5, which is characterized in that the anti-overcharge additive accounts for lithium battery electrolysis
10~20wt% of liquid quality.
7. lithium battery electrolytes according to claim 5, which is characterized in that the lithium battery electrolytes further include lithium salts and
Organic solvent.
8. lithium battery electrolytes according to claim 7, which is characterized in that the lithium salts is lithium hexafluoro phosphate.
9. lithium battery electrolytes according to claim 8, which is characterized in that the lithium hexafluoro phosphate is in lithium battery electrolytes
In molar concentration be 1.0~1.5mol/L.
10. lithium battery electrolytes according to claim 7, which is characterized in that the organic solvent is that carbonates are organic
Solvent.
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| KR20010112594A (en) * | 2000-06-13 | 2001-12-20 | 야마사키 노리쓰카 | Rechargeable lithium batteries |
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Application publication date: 20180831 |