CN101656332A - Lithium-ion battery electrolyte and lithium-ion battery containing same - Google Patents
Lithium-ion battery electrolyte and lithium-ion battery containing same Download PDFInfo
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- CN101656332A CN101656332A CN200810212662A CN200810212662A CN101656332A CN 101656332 A CN101656332 A CN 101656332A CN 200810212662 A CN200810212662 A CN 200810212662A CN 200810212662 A CN200810212662 A CN 200810212662A CN 101656332 A CN101656332 A CN 101656332A
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Abstract
The invention provides a lithium-ion battery electrolyte and a lithium-ion battery containing the same. The electrolyte comprises a solvent and a lithium salt electrolyte, further comprises an addition agent LiFOB and an alkylene unsaturated compound of which the boiling point is between 180 DEG C and 250 DEG C, wherein the alkylene unsaturated compound is one or more of divinyl sulfone and dimethyl sulphoxide. The electrolyte provided by the invention can effectively improve high-temperature storage performance and cycle performance of the lithium-ion battery prepared by using the electrolyte.
Description
Technical field
The present invention relates to a kind of lithium-ion battery electrolytes, and the lithium ion battery that has used this electrolyte.
Background technology
In recent years, mobile message ends such as mobile phone, notebook computer, PDA small-sized, lightness is in development rapidly, and also more and more higher to the requirement of its power supply, lithium ion battery has very large advantage in this respect.Each chief component of lithium ion battery has all had very big development as positive electrode, negative material and electrolyte.And electrolyte comprises that to the various performances of lithium ion battery the research of fail safe, cycle performance, storge quality, charge-discharge performance influence is deep day by day.
In general use lithium hexafluoro phosphate (LiPF
6) be the most frequently used lithium salts of electrolyte of lithium ion battery, but lithium hexafluoro phosphate (LiBF
4) wait lithium salts also along with to its research, the embodiment of advantage, now also often and LiPF6 use use with.In addition, along with researchers pay close attention to and research boric acid class lithium salts, find that boric acid class lithium salts such as difluoro di-oxalate lithium borate (LiFOB) or di-oxalate lithium borate (LiBOB) etc. have many advantages, are used to non-aqueous electrolyte for lithium ion cell gradually.Boric acid class lithium salts additive effect in electrolyte is remarkable, but has some defectives.
CN101154753A discloses a kind of non-aqueous electrolyte for lithium ion cell, the 0.1 quality % that contains electrolytical gross mass in its electrolyte is above, 2 quality % are following is selected from by one or more compounds in the group that constitutes with the compound of formula (1) expression and with the compound of formula (2) expression and the following aromatic compound of the above 4 quality % of 0.1 quality % of electrolytical gross mass.Its Chinese style (1) compound is LiFOB, and formula (2) compound is LiBOB, adds aromatic compound when this nonaqueous electrolytic solution uses LiFOB some chemical properties of lithium battery are increased, the expansion of battery when reducing high temperature.
Yet this method has following shortcoming: 1, the use of LiFOB and aromatic compound all can influence the conductivity of electrolyte, and the heavy-current discharge performance of battery and cryogenic property also can be affected.2, this battery can be on the low side at the capacity surplus ratio of cyclic process.
Summary of the invention
The objective of the invention is provides a kind of and can improve lithium ion battery high-temperature storage performance and circulative novel electrolyte for the high-temperature storage performance that overcomes existing lithium ion battery and the defective of cycle performance difference.
Another object of the present invention provides a kind of lithium ion battery, and described lithium ion battery uses electrolyte of the present invention.
The invention provides a kind of new type lithium ion battery electrolyte, comprise solvent, electrolyte lithium salt, also comprise additive LiFOB and alkylene unsaturated compound, the boiling point of described alkylene unsaturated compound is between 180-250 ℃.
The present invention also provides a kind of lithium ion battery in addition, and described lithium ion battery comprises housing, places positive pole, negative pole, barrier film and electrolyte in the housing, and the electrolyte of described lithium ion battery uses electrolyte of the present invention.
Electrolyte provided by the invention, owing to added LiFOB and alkylene unsaturated compound, LiFOB has good thermal stability, therefore can effectively reduce under the high temperature storage condition and use the gas of lithium ion battery of the present invention to expand; And alkylene unsaturated compound such as vinyl sulfone(Remzaol (VS) have the function that suppresses the gas generation, the more important thing is that the present inventor finds that it can effectively suppress the decomposition of battery SEI film in cyclic process, and then improved the capacity surplus ratio of battery, the cycle performance of the lithium ion battery that is to use electrolyte of the present invention is improved.Thereby the electrolyte of lithium ion battery provided by the invention after having added LiFOB and alkylene unsaturated compound, has significantly improved the high-temperature storage performance and the cycle performance of the lithium ion battery of the preparation of using electrolyte of the present invention.
Description of drawings
The battery B1-4 cycle performance test result figure that battery A1-6 that Fig. 1 makes for the specific embodiment 1-6 that uses lithium-ion battery electrolytes of the present invention and comparative example 1-4 make.
Specific embodiments
The invention provides a kind of lithium-ion battery electrolytes, comprise solvent, electrolyte lithium salt also comprises additive LiFOB and alkylene unsaturated compound, and the boiling point of described alkylene unsaturated compound is between 180-250 ℃.
Described LiFOB accounts for 1～5wt% of electrolyte gross mass, preferred 1～2wt%; Described alkylene unsaturated compound accounts for 1～10wt% of electrolyte gross mass, and described LiFOB is LiFOB well known in the art.
Described alkylene unsaturated compound is selected from one or more in vinyl sulfone(Remzaol (VS), dimethyl sulfoxide (DMSO) (DMSO) and their derivative, optimal ethylene sulfone; Vinyl sulfone(Remzaol accounts for 2～5wt% of electrolyte gross mass, preferred 2～3wt%.
For the LiFOB addition, the consumption improvement of high temperature storage thickness swelling very little is not obvious, the multiplying power heavy-current discharge of the too much battery of consumption can be affected, in general suitable consumption is 1～5wt%, preferred 1～2wt%, the improvement of the very few cycle performance of addition is not obvious for the addition of vinyl sulfone(Remzaol, addition is excessive influential to other dielectric constant bigger component such as EC, discharge capacity after causing battery to change into descends, therefore desirable consumption is in 2～5wt% scope, preferred 2～3wt%.
Described solvent is an organic solvent, is selected from ethylene carbonate (EC), vinylene carbonate (VC), propene carbonate (PC), divinyl carbonate (DEC), the gamma-butyrolacton (GBL) etc. two or more.Wherein, the requirement to single organic solvent is:
Boiling point 〉=120 ℃; Flash-point 〉=25 ℃;
Electrochemical oxidation potential phi ox＞3.0V vs SCE (saturated calomel electrode);
Electrochemical reduction potential phi red＜2.8V vs SCE (saturated calomel electrode);
In the specific embodiments of the invention, organic solvent is selected ethylene carbonate (EC), divinyl carbonate (DEC), vinylene carbonate (VC).
Described electrolyte lithium salt is selected from lithium perchlorate (LiClO
4), LiBF4 (LiBF
4), lithium hexafluoro phosphate (LiPF
6) wait in the conventional lithium salts one or more.In the specific embodiment of the invention, the preferred electrolyte lithium salts is LiPF
6, the concentration of lithium salts is in 0.7～1.3mol/L scope.
Lithium ion battery provided by the invention comprises housing, places the positive pole of housing and barrier film and the electrolyte between negative pole and the described electrode, and electrolyte uses electrolyte of the present invention.The present invention has no particular limits described barrier film, can be selected from various barrier film known in those skilled in the art.For example, described barrier film can be selected from various barrier films with electrical insulation capability and liquid retainability energy used in the lithium ion battery, as polyolefin micro porous polyolefin membrane, polyethylene felt, glass mat or ultra-fine fibre glass paper.The position of described barrier film, character and kind are conventionally known to one of skill in the art.
The positive pole of described lithium ion battery comprises positive active material, conductive agent and adhesive, wherein positive electrode is selected from positive active materials known in those skilled in the art such as cobalt acid lithium, lithium nickelate, LiMn2O4, LiFePO4 and ternary material, the kind of described conductive agent and content are conventionally known to one of skill in the art, and conductive agent can be selected from one or more in carbon nano-tube, nano-silver powder, acetylene black, graphite powder, the carbon black as described.With respect to the positive active material of 100 weight portions, the content of described conductive agent can be the 0.1-10 weight portion.The kind of described adhesive and consumption are conventionally known to one of skill in the art, and adhesive can be selected from one or more in polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), carboxymethyl cellulose (CMC), methylcellulose (MC), the butadiene-styrene latex (SBR) etc. as described.With respect to the positive active material of 100 weight portions, the content of described adhesive can be the 0.1-5 weight portion.
Contain conductive agent and adhesive in the lithium ion battery negative provided by the invention, wherein, the kind of described conductive agent and adhesive and consumption are conventionally known to one of skill in the art, and described conductive agent can be selected from a kind of in graphite powder, carbon nano-tube, nano-silver powder, acetylene black, the carbon black; Described adhesive can be selected from one or more in polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), carboxymethyl cellulose (CMC), methylcellulose (MC), the butadiene-styrene latex (SBR) etc.
The negative plate of described lithium ion battery can be by at first mixing solvent with conductive agent, adhesive, in de-airing mixer, stir then and form cathode size stable, homogeneous, and slurry is coated on the collector equably, the method for carrying out drying, rolling and cut-parts again makes.Described solvent types and consumption are conventionally known to one of skill in the art, and solvent can be selected from as N-methyl pyrrolidone (NMP), water etc. and can make described mixture form any solvent of pasty state as described.Described collector can be the various collectors that this area routine is used for lithium ion battery negative, a kind of as in Copper Foil, aluminium foil and the aluminium net.Drying, roll-in and concrete operations that cut and condition can adopt preparation method and condition according to positive pole to be prepared.
Can by with positive plate, negative plate and barrier film successively with the stacked electrode group that is wound into scroll of up-coiler, and the electrode group that obtains put into the battery case of an end opening, the method for injecting electrolyte, sealing then makes described lithium ion battery.Wherein method provided by the invention is adopted in the preparation of positive plate and negative plate; Wherein the method for the stacked coiling of up-coiler, electrolyte injection rate and method for implanting and sealing adopts prior art.
Embodiment 1
This embodiment is used to illustrate lithium-ion battery electrolytes provided by the invention and lithium ion battery thereof.
(1) preparation of electrolyte
In solution add vinylene carbonate (VC) solvent 4.65g at 1: 1 to 200g EC and DEC proportioning, add the LiPF of 28.47g again
6, be made into bulk electrolysis liquid, mix evenly to wherein adding common LiFOB of being purchased of 2.33g and 4.66g vinyl sulfone(Remzaol again, make experiment electrolyte.
The mass percent that LiFOB in this nonaqueous electrolytic solution in the additive package accounts for electrolyte is 1%, VS is 2%.
(2) Zheng Ji preparation
(Atuofeina Corp 761#PVDF) is dissolved in 1350 gram N-N-methyl-2-2-pyrrolidone N-(NMP) solvents and makes binder solution, then with 2895 gram LiCoO with 90 gram polyvinylidene fluoride
2(FMC Corp.'s production) joins in the above-mentioned solution, fully mixes and makes anode sizing agent, and this anode sizing agent is coated on the aluminium foil equably, makes long 70 millimeters, wide 19 millimeters, thick 125 microns positive pole through 125 ℃ of oven dry 1 hour, roll-in, cut-parts.The amount that applies makes every positive pole contain 6.2 gram LiCoO
2
(3) preparation of negative pole
(Jiangmen quantum Gao Ke company produces with 30 gram CMC CMC, model is CMC1500) and 75 gram butadiene-styrene rubber (SBR) latex (Nantong Shen Hua chemical company commodity, the trade mark is TAIPOL1500E) be dissolved in the 1875 gram water, make binder solution, with 1395 gram graphite (SODIFF company commodity, the trade mark is DAG84) join in this binder solution, mix and make the graphite cathode slurry, this cathode size is coated on the Copper Foil equably, through 125 ℃ of oven dry 1 hour, roll-in, cut-parts make long 70 millimeters, wide 19 millimeters, thick 125 microns negative pole.The amount that applies makes every negative pole contain 3.1 gram graphite.
(4) assembling of battery
The positive plate that (2) are obtained, negative plate and the PP/PE/PP barrier film that (3) obtain stack gradually the electrode group that is wound into scroll, the electrode group that obtains is put into the battery case of an end opening, inject (1) preparation electrolyte 3 grams, make LP053450AR lithium ion battery A1 after the sealing.The design capacity of battery is 1C=1100mAh.
This embodiment is used to illustrate lithium-ion battery electrolytes provided by the invention and lithium ion battery thereof.
Method according to embodiment 1 prepares lithium ion battery, the difference is that the quality difference of the additive that adds in the preparation of electrolyte, and wherein LiFOB is that 11.6g, VS are 4.66g.
The mass percent that LiFOB in this nonaqueous electrolytic solution in the additive package accounts for electrolyte is 5%, VS is 2%.
The LP053450AR lithium ion battery A2 that finally makes.
This embodiment is used to illustrate lithium-ion battery electrolytes provided by the invention and lithium ion battery thereof.
Method according to embodiment 1 prepares lithium ion battery, the difference is that the quality difference of the additive that adds in the preparation of electrolyte, and wherein LiFOB is that 4.66g, VS are 4.66g.
The mass percent that LiFOB in this nonaqueous electrolytic solution in the additive package accounts for electrolyte is 2%, VS is 2%.
The LP053450AR lithium ion battery A3 that finally makes.
This embodiment is used to illustrate lithium-ion battery electrolytes provided by the invention and lithium ion battery thereof.
Method according to embodiment 1 prepares lithium ion battery, the difference is that the quality difference of the additive that adds in the preparation of electrolyte, and wherein LiFOB is that 11.65g, VS are 6.99g.
The mass percent that LiFOB in this nonaqueous electrolytic solution in the additive package accounts for electrolyte is 5%, VS is 3%.
The LP053450AR lithium ion battery A4 that finally makes.
This embodiment is used to illustrate lithium-ion battery electrolytes provided by the invention and lithium ion battery thereof.
Method according to embodiment 1 prepares lithium ion battery, the difference is that the quality difference of the additive that adds in the preparation of electrolyte, and wherein LiFOB is that 2.33g, VS are 6.99g.
The mass percent that LiFOB in this nonaqueous electrolytic solution in the additive package accounts for electrolyte is 1%, VS is 3%.
The LP053450AR lithium ion battery A5 that finally makes.
This embodiment is used to illustrate lithium-ion battery electrolytes provided by the invention and lithium ion battery thereof.
Method according to embodiment 1 prepares lithium ion battery, the difference is that the additive that adds in the preparation of electrolyte is LiFOB and dimethyl sulfoxide (DMSO) (DMSO), and wherein LiFOB is that 11.65g, dimethyl sulfoxide (DMSO) are 4.66g.
The mass percent that LiFOB in this nonaqueous electrolytic solution in the additive package accounts for electrolyte is 5%, DMSO is 2%.
The LP053450AR lithium ion battery A6 that finally makes.
Comparative example 1
Method according to embodiment 1 prepares lithium ion battery, is not both the electrolyte that injects in the battery and does not add LiFOB and VS additive, and the battery LP053450AR that note is made is B1.
Comparative example 2
Method according to embodiment 1 prepares lithium ion battery, and not being both the electrolyte interpolation VS that injects in the battery is 6.99g, and the mass percent that VS accounts for electrolyte is 3%, and the battery LP053450AR that note is made is B2.
Comparative example 3
Method according to embodiment 1 prepares lithium ion battery, and not being both the electrolyte interpolation LiFOB that injects in the battery is 4.66g, and the mass percent that LiFOB accounts for electrolyte is 2%, and the battery LP053450AR that note is made is B3.
Comparative example 4
Embodiment 45 according to the disclosed technical scheme of documents CN101154753A in the background technology makes electrolyte, and uses this electrolyte to make the LP053450AR lithium ion battery according to the method for the embodiment of the invention 45, is designated as B4.
Each embodiment and comparative example components of additives and content are as shown in table 1.
Table 1 additive component and content
| ??EC∶DEC | ??LiPF 6 | ??vc(wt％) | ??VS(wt％) | ?LiFOB(wt％) | |
| Embodiment 1 | ??1∶1 | ??1M | ??2 | ??2 | ??1 |
| |
??1∶1 | ??1M | ??2 | ??2 | ??5 |
| |
??1∶1 | ??1M | ??2 | ??2 | ??2 |
| |
??1∶1 | ??1M | ??2 | ??5 | ??3 |
| |
??1∶1 | ??1M | ??2 | ??3 | ??1 |
| |
??1∶1 | ??1M | ??2 | ??5(DMSO) | ??1 |
| Comparative example 1 | ??1∶1 | ??1M | ??2 | ??0 | ??0 |
| Comparative example 2 | ??1∶1 | ??1M | ??2 | ??3 | ??0 |
Battery performance test
(1) battery multiplying power discharging property test
The battery B1-B4 that battery A1-A6 that the foregoing description 1-6 is made and comparative example 1-4 make, the nominal capacity of battery is 1100mA, under normal temperature condition, charging to voltage with 950mA is 4.2V, and then constant voltage 4.2V charging, cut-off current 55mA (0.05C), and with 220mA (0.2C) and 1100mA (1C) to be discharged to voltage be 3.0V by, record discharge capacity.
(2) the high-temperature storage performance of battery
The battery B1-B4 that battery A1-A6 that the foregoing description 1-6 is made and comparative example 1-4 make, the nominal capacity of battery is 1100mA, under normal temperature condition, charging to voltage with 950mA is 4.2V, and then constant voltage 4.2V charging, cut-off current 55mA (0.05C), and with 1100mA to be discharged to voltage be 3.0V by, record initial discharge capacity.Battery charge was placed 1 hour measurement battery initial internal resistance and original depth at normal temperature to 4.2V.Then, battery is put into 85 ℃ of baking ovens, store 48h; Store its thickness of back test, residual capacity, and do the recovery volume test.
The recovery volume test is as follows: battery is at room temperature shelved to electric wicking surface temperature reached room temperature, battery with 1100mA to be discharged to voltage be 3.0V by, charging to voltage with 950mA then is 4.2V, and then constant voltage 4.2V charging, cut-off current 55mA (0.05C), and with 1100mA to be discharged to voltage be 3.0V by, 3 times so repeatedly, discharge capacity with for the third time the time is the recovery capacity, and thickness is discharge thickness.
Internal resistance method of testing:, measure and average for three times with the internal resistance of internal resistance instrument test battery.
Calculate and store back internal resistance growth rate, capacity restoration rate, thickness growth rate, test data result is as shown in table 3.
Internal resistance growth rate (%)=(internal resistance of cell after the high-temperature storage-normal temperature initial cells internal resistance)/normal temperature initial cells internal resistance * 100%
Capacity after capacity restoration rate (%)=high-temperature storage/normal temperature initial discharge capacity * 100%
Thickness growth rate (%)=(cell thickness after the high-temperature storage-normal temperature initial cells thickness)/normal temperature initial cells thickness * 100%
(3) cycle performance of battery test
The battery B1-B4 that battery A1-A6 that the foregoing description 1-6 is made and comparative example 1-4 make, the nominal capacity of battery is 1100mA, under normal temperature condition, charging to voltage with 950mA is 4.2V, and then constant voltage 4.2V charging, cut-off current 55mA (0.05C), and with 1100mA (1C) to be discharged to voltage be 3.0V by, so repeated charge writes down discharge capacity 10 times, 50 times, 100 times, 150 times, 200 times, 250 times, 300 times, 350 times, 400 times, 450 times, 500 times.
Test result and analysis
Battery multiplying power discharging property test result such as following table 2.
Table 2 battery multiplying power discharging property test result
| Battery size | 0.2C capacity (mAh) | 1C capacity (mAh) | 1C/0.2C capacity (%) |
| ??A1 | ??1100 | ?1092 | ??99.3 |
| ??A2 | ??1098 | ?1078 | ??98.2 |
| ??A3 | ??1077 | ?1067 | ??99.7 |
| ??A4 | ??1009 | ?1000 | ??99.1 |
| ??A5 | ??1103 | ?1090 | ??98.8 |
| ??A6 | ??1079 | ?1066 | ??98.8 |
| ??B1 | ??1096 | ?1076 | ??98.3 |
| ??B2 | ??1103 | ?1066 | ??96.6 |
| ??B3 | ??1101 | ?1055 | ??95.8 |
| ??B4 | ??1077 | ?1045 | ??97.1 |
By the contrast of B2 from table 2, B3 and A1-6 battery capacity as can be seen, use LiFOB or VS all can make the high rate performance (heavy-current discharge) of battery that in various degree decline is arranged merely; And by A1-6 and B1 as can be seen, it is influenced hardly that LiFOB and VS comprehensively add the high rate performance that makes battery, even slightly promote.
Battery high-temperature storage batteries The performance test results sees Table 3.
Table 3 battery high-temperature storage batteries performance
By B2, B3 in the table 3 and B1 battery high-temperature storge quality test result as can be seen, single adding LiFOB or VS are to improving the thickness swelling that battery high-temperature is stored, but effect is not clearly, and the thickness growth rate of B2 and B3 is 9.89%, 7.90%, and B1's is 12.09%.By A1-6 in the table 3 and B1 contrast as can be seen, LiFOB and VS are used in combination and can improve the high temperature storage thickness swelling greatly, and capacity restoration rate and internal resistance are unaffected.
The cycle performance test result of battery sees Table 4 and Figure of description 1.
Table 4 cycle performance of battery test result
By the B1 in table 4 and the Figure of description 1 and B3 as can be seen, the interpolation of pure LiFOB can cause cycle capacity loss bigger than normal, and cyclic curve descends very obvious; Added the battery B4 that the comparative example 4 of BP and LiFOB is made, its cyclic curve descends also clearly.And by A1-6 and B1, B4 more as can be seen, LiFOB and VS can effectively improve cycle performance in conjunction with practicality.
In a word, from the test result of above embodiment and comparative example, use the high-temperature storage performance and the cycle performance of the lithium ion battery of electrolyte preparation provided by the invention effectively to be improved as can be seen.
Claims (9)
1, a kind of lithium-ion battery electrolytes comprises solvent, electrolyte lithium salt, it is characterized in that, also comprises additive LiFOB and alkylene unsaturated compound, and the boiling point of described alkylene unsaturated compound is between 180-250 ℃.
2, electrolyte according to claim 1, wherein, described solvent is an organic solvent, described organic solvent is selected from two or more in ethylene carbonate, vinylene carbonate, propene carbonate, divinyl carbonate, the gamma-butyrolacton.
3, electrolyte according to claim 1 is characterized in that, described alkylene unsaturated compound is selected from one or more in vinyl sulfone(Remzaol, the dimethyl sulfoxide (DMSO).
4, electrolyte according to claim 3 is characterized in that, described LiFOB accounts for 1～5wt% of electrolyte gross mass, and described alkylene unsaturated compound accounts for 1～10wt% of electrolyte gross mass.
5, electrolyte according to claim 1 is characterized in that, described alkylene unsaturated compound is a vinyl sulfone(Remzaol.
6, electrolyte according to claim 5 is characterized in that, described LiFOB accounts for 1～5wt% of electrolyte gross mass, and described vinyl sulfone(Remzaol accounts for 2～5wt% of electrolyte gross mass.
7, electrolyte according to claim 6 is characterized in that, described LiFOB accounts for 1～2wt% of electrolyte gross mass, and described vinyl sulfone(Remzaol accounts for 2～3wt% of electrolyte gross mass.
8, electrolyte according to claim 1 is characterized in that, described electrolyte lithium salt is selected from one or more in lithium perchlorate, LiBF4, biethyl diacid lithium borate, the lithium hexafluoro phosphate.
9, a kind of lithium ion battery comprises housing, places positive pole, negative pole, barrier film and electrolyte in the housing, it is characterized in that the electrolyte of described lithium ion battery is any described electrolyte of claim 1-8.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367801A (en) * | 2012-04-09 | 2013-10-23 | 张家港市国泰华荣化工新材料有限公司 | Electrolyte capable of improving high temperature performance of lithium ion battery |
| CN103794767A (en) * | 2012-11-02 | 2014-05-14 | 华为技术有限公司 | Lithium battery cathode material, cathode, lithium battery, preparation method and communication equipment thereof |
| CN104681846A (en) * | 2013-11-29 | 2015-06-03 | 苏州宝时得电动工具有限公司 | Battery and electrolytic solution thereof |
| CN105958111A (en) * | 2016-06-14 | 2016-09-21 | 东莞市创明电池技术有限公司 | Electrolyte for lithium ion battery, and lithium ion battery |
| CN108110321A (en) * | 2017-12-27 | 2018-06-01 | 河南省法恩莱特新能源科技有限公司 | A kind of lithium battery high-voltage electrolyte |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030023290A (en) * | 2001-09-13 | 2003-03-19 | 삼성에스디아이 주식회사 | Organic liquid electrolytes containing carbonates having carbon-carbon double bond and polymer electrolytes and lithium secondary batteries manufactured by employing the same |
| JP4703203B2 (en) * | 2005-02-03 | 2011-06-15 | 三洋電機株式会社 | Nonaqueous electrolyte secondary battery |
-
2008
- 2008-08-23 CN CN200810212662XA patent/CN101656332B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367801A (en) * | 2012-04-09 | 2013-10-23 | 张家港市国泰华荣化工新材料有限公司 | Electrolyte capable of improving high temperature performance of lithium ion battery |
| CN103794767A (en) * | 2012-11-02 | 2014-05-14 | 华为技术有限公司 | Lithium battery cathode material, cathode, lithium battery, preparation method and communication equipment thereof |
| CN104681846A (en) * | 2013-11-29 | 2015-06-03 | 苏州宝时得电动工具有限公司 | Battery and electrolytic solution thereof |
| CN105958111A (en) * | 2016-06-14 | 2016-09-21 | 东莞市创明电池技术有限公司 | Electrolyte for lithium ion battery, and lithium ion battery |
| CN108110321A (en) * | 2017-12-27 | 2018-06-01 | 河南省法恩莱特新能源科技有限公司 | A kind of lithium battery high-voltage electrolyte |
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| Publication number | Publication date |
|---|---|
| CN101656332B (en) | 2012-10-31 |
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