CN109411822A - A kind of modern high security electrolyte - Google Patents
A kind of modern high security electrolyte Download PDFInfo
- Publication number
- CN109411822A CN109411822A CN201710706169.2A CN201710706169A CN109411822A CN 109411822 A CN109411822 A CN 109411822A CN 201710706169 A CN201710706169 A CN 201710706169A CN 109411822 A CN109411822 A CN 109411822A
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- high security
- modern high
- battery
- contain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
- H01M2300/004—Three solvents
-
- 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 relates to a kind of modern high security electrolyte, which is EC, PC and DMC, and solute is LiN (SO2CF3)(SO2C4F9), also contain 1%~4% (wt) ethylene carbonate base vinyl acetate (VEC), 1%~4% (wt) triphenyl phosphate (TPP), 0.5%~2% (wt) phosphoric acid hexichol mono-n-butylester (MDP) and 1%~3% (wt) 3- chloro thiophene in electrolyte, the electrolyte has excellent anti-flammability, helps to reduce lithium ion battery a possibility that being heated, overcharging, burn under needle thorn, short-circuit condition.
Description
Technical field
The present invention relates to field of chemical power source, and in particular to a kind of lithium ion battery modern high security electrolyte.
Background technique
With lithium ion battery 3C consumption electronic product, electric tool, electric car, in terms of rapid proliferation
And extensive use, the safety issue of battery become to become increasingly conspicuous.Organic electrolyte is extremely incendive substance, battery overheat and
It crosses charge and discharge to be likely to cause the burning even explosion of battery of electrolyte, therefore improves the safety and stability of electrolyte
It is an important method for improving lithium ion battery security.
The present invention has developed a kind of modern high security electrolyte, for manufacturing quick-fried lithium ion battery, helps to reduce electricity
Pond is a possibility that being heated, overcharging, burn under needle thorn, short-circuit condition.
Summary of the invention
The purpose of the present invention is to provide a kind of modern high security electrolyte.
The technical scheme is that a kind of modern high security electrolyte, the electrolyte solvent is EC (ethylene carbonate
Ester), the mixed solution of PC (propene carbonate) and DMC (dimethyl carbonate), volume ratio 1:2:1, solute LiN
(SO2CF3)(SO2C4F9), content is 0.5~2mol/L.
According to foregoing invention, contain 1%~4% (wt) ethylene carbonate base vinyl acetate (VEC), 1%~4% in electrolyte
(wt) triphenyl phosphate (TPP) and 0.5%~2% (wt) phosphoric acid hexichol mono-n-butylester (MDP).
According to foregoing invention, contain 1%~3% (wt) 3- chloro thiophene in electrolyte.
The beneficial effects of the present invention are: electrolyte according to the present invention, compared with the past will not reduce the ion of electrolyte
Conductivity can greatly improve electrolyte flame-retardant by the synergistic action effect of each component, and due to containing
The 3- chloro thiophene of special ratios, electrolyte can occur polymerization reaction when over-charging of battery and substantially increase electrolyte internal resistance
To block battery further react raising safety, using the electrolyte of the invention will be greatly reduced lithium ion battery by
Heat, a possibility that overcharging, combustion explosion occurs under needle thorn, short-circuit extremity.
Specific embodiment
A. electrolyte configures
By LiN (SO2CF3)(SO2C4F9), EC (ethylene carbonate), PC (propene carbonate) and DMC (dimethyl carbonate) it is mixed
It closes, LiN (SO is made2CF3)(SO2C4F9) organic solution, when mixing, contain 0.5mol/L~2mol/L according to every liter of electrolyte
Solute LiN (SO2CF3)(SO2C4F9), the volume ratio of EC, PC and DMC are 1:2:1 in solvent；In above-mentioned organic solution successively
1%~4% (wt) ethylene carbonate base vinyl acetate (VEC), 1%~4% (wt) triphenyl phosphate (TPP), 0.5%~2% is added
(wt) phosphoric acid hexichol mono-n-butylester (MDP) and 1%~3% (wt) 3- chloro thiophene are sufficiently mixed uniformly.
B. the assembling of lithium ion battery
By ternary nickel cobalt manganese lithium positive plate, diaphragm, graphite cathode piece according to diaphragm between positive plate and negative electrode tab
Mode is helically wound poling group, pole is assembled into aluminum plastic film, PL10564155 type 3.7V10Ah battery is made, then to electricity
The configured electrolyte of injection, then battery case is sealed, that is, complete the assembling of lithium ion battery in the shell of pond.
C. the chemical conversion of battery and the test of security performance
Fertilizer alleviant:
A) 0.2C electric current constant-current charge turns 4.2V constant-voltage charge to electric current 50mA to 4.2V
B) 30min is shelved
C) 0.5C constant-current discharge is to 2.75V
D) 0.2C electric current constant-current charge turns 4.2V constant-voltage charge to electric current 50mA to 4.2V
E) 30min is shelved
F) 1C constant-current discharge is to 2.75V
Security test system:
A) overcharge: battery turns 4.2V constant-voltage charge to electric current when charging to voltage 4.2V with 1/3C be 0.1C, then with
1C charging, until cell voltage reaches 5V or the charging time reaches 90min.
B) short-circuit: battery turns 4.2V constant-voltage charge to electric current when charging to voltage 4.2V with 1/3C be 0.1C, then will be electric
Pond should be less than 5m Ω through external short circuit 10min, outside line resistance.
C) heat: battery turns 4.2V constant-voltage charge to electric current when charging to voltage 4.2V with 1/3C be 0.1C, then will be electric
Pond is placed in 85 DEG C of ± 2 DEG C of insulating boxs, and keeps the temperature 120min.
D) needle pierces: battery turns 4.2V constant-voltage charge to electric current when charging to voltage 4.2V with 1/3C be 0.1C, is then usedHigh temperature resistant steel needle, the speed with 10mm/s~40mm/s, passed through from the direction perpendicular to accumulator plate
Wear (steel needle rests in battery).
Test result:
" √ ": indicate that, by test, catching fire phenomenon does not occur for battery；" " is represented not by test, and battery occurs
Catching fire phenomenon.
The present invention is not limited to the embodiment of above-mentioned embodiment, this field inspiration according to the present invention is not departed from
The improvement and modification that scope of the invention is made all should be within the scope of the present invention.
Claims (3)
1. a kind of modern high security electrolyte, which is characterized in that solvent be EC (ethylene carbonate), PC (propene carbonate) and
The mixed solution of DMC (dimethyl carbonate), volume ratio 1:2:1, solute are LiN (SO2CF3)(SO2C4F9), content is
0.5~2mol/L.
2. a kind of modern high security electrolyte according to claim 1, which is characterized in that also contain 1% in electrolyte
~4% (wt) ethylene carbonate base vinyl acetate (VEC), 1%~4% (wt) triphenyl phosphate (TPP) and 0.5%~2% (wt) phosphorus
Sour hexichol mono-n-butylester (MDP).
3. a kind of modern high security electrolyte according to claim 1, which is characterized in that also contain 1% in electrolyte
~3% (wt) 3- chloro thiophene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706169.2A CN109411822A (en) | 2017-08-17 | 2017-08-17 | A kind of modern high security electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706169.2A CN109411822A (en) | 2017-08-17 | 2017-08-17 | A kind of modern high security electrolyte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109411822A true CN109411822A (en) | 2019-03-01 |
Family
ID=65454862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710706169.2A Withdrawn CN109411822A (en) | 2017-08-17 | 2017-08-17 | A kind of modern high security electrolyte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109411822A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411619A (en) * | 2001-01-04 | 2003-04-16 | 三菱化学株式会社 | Nonaqueous electrolytic liquid and lithium secondary battery employing same |
| US20030157413A1 (en) * | 2002-02-15 | 2003-08-21 | Chen Chun-Hua | Lithium ion battery with improved safety |
| CN1860629A (en) * | 2004-05-25 | 2006-11-08 | 松下电器产业株式会社 | Lithium ion secondary battery and method for manufacturing same |
| CN102938471A (en) * | 2012-12-05 | 2013-02-20 | 奇瑞汽车股份有限公司 | Electrolyte used for lithium ion battery and lithium ion battery containing same |
| CN103339784A (en) * | 2011-01-31 | 2013-10-02 | 三菱化学株式会社 | Non-aqueous electrolytic solution, and non-aqueous electrolyte secondary battery using same |
| CN103715458A (en) * | 2013-10-23 | 2014-04-09 | 江西优锂新材股份有限公司 | Preparation method of electrolyte used for lithium manganate power battery at high temperature |
-
2017
- 2017-08-17 CN CN201710706169.2A patent/CN109411822A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411619A (en) * | 2001-01-04 | 2003-04-16 | 三菱化学株式会社 | Nonaqueous electrolytic liquid and lithium secondary battery employing same |
| US20030157413A1 (en) * | 2002-02-15 | 2003-08-21 | Chen Chun-Hua | Lithium ion battery with improved safety |
| CN1860629A (en) * | 2004-05-25 | 2006-11-08 | 松下电器产业株式会社 | Lithium ion secondary battery and method for manufacturing same |
| CN103339784A (en) * | 2011-01-31 | 2013-10-02 | 三菱化学株式会社 | Non-aqueous electrolytic solution, and non-aqueous electrolyte secondary battery using same |
| CN102938471A (en) * | 2012-12-05 | 2013-02-20 | 奇瑞汽车股份有限公司 | Electrolyte used for lithium ion battery and lithium ion battery containing same |
| CN103715458A (en) * | 2013-10-23 | 2014-04-09 | 江西优锂新材股份有限公司 | Preparation method of electrolyte used for lithium manganate power battery at high temperature |
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| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190301 |
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| WW01 | Invention patent application withdrawn after publication |