CN105552436A - Lithium battery electrolyte and novel lithium ion battery - Google Patents
Lithium battery electrolyte and novel lithium ion battery Download PDFInfo
- Publication number
- CN105552436A CN105552436A CN201510924129.6A CN201510924129A CN105552436A CN 105552436 A CN105552436 A CN 105552436A CN 201510924129 A CN201510924129 A CN 201510924129A CN 105552436 A CN105552436 A CN 105552436A
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- CN
- China
- Prior art keywords
- electrolyte
- lithium
- organic solvent
- carbonate
- battery
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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
- H01M10/0567—Liquid materials characterised by the additives
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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
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic 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
- H01M2300/0042—Four or more 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the manufacturing technical field of a lithium battery, and specifically to a high-efficiency and high-safety lithium battery electrolyte and a novel lithium ion battery. The lithium battery electrolyte comprises a lithium salt, additives and an organic solvent used for dissolving the lithium salt; the lithium battery electrolyte is characterized in that the organic solvent accounts for 80-89 wt% of the electrolyte; the organic solvent comprises the following components: diethyl carbonate (DEC), (dimethyl carbonate) DMC, (ethyl acetate) EC, (ethyl methyl carbonate) EMC and (propylene carbonate) PC; and the additives comprise ethylene diamine tetraacetic acid accounting for 0.15-1.6wt% of the electrolyte, 1, 3-(propane sultone) PS accounting for 1.12-1.5wt% of the electrolyte and a flame retardant accounting for 1.8-2.5wt% of the electrolyte. Compared with the prior art, the lithium battery electrolyte and the novel lithium ion battery have the remarkable advantages of high efficiency, high safety and the like.
Description
Technical field:
The present invention relates to lithium battery manufacturing technology field, the lithium battery electrolytes that specifically a kind of efficiency is high, fail safe is good and new type lithium ion battery.
Background technology:
Along with energy crisis spreads in the world; the new forms of energy finding Green Sustainable have become the main development direction of energy field; electric automobile is just developed rapidly as a kind of new forms of energy vehicles of energy-conserving and environment-protective, lithium ion battery because have energy density high, have extended cycle life, green non-pollution more and more applied.But the fail safe of high capacity lithium ion battery is one of subject matter of its development of restriction always, when high temperature, internal short-circuit, extruding, vibration, lithium ion battery can be smoldered, catch fire and even explode, and brings potential safety hazard to use.
Lithium ion battery is provided with battery core, battery core comprise battery core shell, main pole lamellar body, from pole piece body, main pole lamellar body comprises the septate positive plate of therebetween and negative plate, positive pole ear and negative lug is drawn respectively from positive plate and negative plate, connection conducting strip is drawn respectively in addition from anode pole piece and cathode pole piece, each comprises the septate anode pole piece of therebetween and cathode pole piece from pole piece body unit, draws respectively be connected conducting strip and main pole sheet body unit or adjacent being connected from the connection conducting strip of pole piece body unit from anode pole piece and cathode pole piece.Sealing electrolyte in the enclosure is also provided with in addition in battery core.
Summary of the invention:
The present invention is directed to the shortcoming and defect existed in prior art, propose a kind of efficiency is high, fail safe is good lithium battery electrolytes and new type lithium ion battery.
The present invention can be reached by following measures:
A kind of lithium battery electrolytes, comprise lithium salts, additive and the organic solvent for dissolving lithium salts, it is characterized in that described organic solvent account for electrolyte weight ratio be 80% ?89%, comprise following component: ethylene carbonate DEC, dimethyl carbonate DMC, ethyl acetate EC, methyl ethyl carbonate EMC, propene carbonate PC; Additive comprises and accounts for electrolyte weight than the disodium ethylene diamine tetraacetate being 0.15% ?1.6%: account for electrolyte weight than 1, the 3 ?propane sultone PS being 1.12% ?1.5%, account for electrolyte weight than the fire retardant being 1.8% ?2.5%.
The ratio of each component is in organic solvent of the present invention: ethylene carbonate DEC25% ?30%, dimethyl carbonate DMC22% ?25%, ethyl acetate EC25% ?35%, methyl ethyl carbonate EMC12% ?15%, propene carbonate PC5% ?15%.
Lithium salts of the present invention comprises at least one in LiClO4, LiPF6, LiAsF6 and LiOSO2CF3.
Electrolyte of the present invention needs to carry out under the protection of the inert gas of drying in layoutprocedure; organic solvent is added fluoridize in bottle and carry out molecular sieve dehydration process; stir; make its water content at below 8ppm; then in the organic solvent stirred, add corresponding additive and lithium salts; and stir, in operating process, control temperature is less than 15 degree.
The invention allows for a kind of new type lithium ion battery, be provided with battery container, be provided with battery core and electrolyte in battery container, described battery core comprises anode plate, negative plates and the barrier film between anode plate and negative plates, it is characterized in that electrolyte adopts electrolyte described above.
The present invention by adding plurality of stable agent, fire retardant in the electrolyte of lithium ion battery, effective raising lithium battery interior stability, can prevent lithium battery occurrence temperature under severe service condition from raising, catch fire, the serious consequence such as blast, compared with prior art, there is the significant advantages such as efficiency is high, fail safe is good.
Embodiment:
Below in conjunction with embodiment, the present invention is further illustrated.
The present invention is directed to the shortcoming and defect that prior art exists, propose a kind of lithium battery electrolytes, comprise lithium salts, additive and the organic solvent for dissolving lithium salts, it is characterized in that described organic solvent account for electrolyte weight ratio be 80% ?89%, comprise following component: ethylene carbonate DEC, dimethyl carbonate DMC, ethyl acetate EC, methyl ethyl carbonate EMC, propene carbonate PC; Additive comprises and accounts for electrolyte weight than the disodium ethylene diamine tetraacetate being 0.15% ?1.6%: account for electrolyte weight than 1, the 3 ?propane sultone PS being 1.2% ?1.5%, account for electrolyte weight than the fire retardant being 1.8% ?2.5%.
The ratio of each component is in organic solvent of the present invention: ethylene carbonate DEC28% ?30%, dimethyl carbonate DMC24% ?25%, ethyl acetate EC30% ?35%, methyl ethyl carbonate EMC12% ?15%, propene carbonate PC5% ?15%.
Lithium salts of the present invention comprises at least one in LiClO4, LiPF6, LiAsF6 and LiOSO2CF3.
Electrolyte of the present invention needs to carry out under the protection of the inert gas of drying in layoutprocedure; organic solvent is added fluoridize in bottle and carry out molecular sieve dehydration process; stir; make its water content at below 8ppm; then in the organic solvent stirred, add corresponding additive and lithium salts; and stir, in operating process, control temperature is less than 15 degree.
The invention allows for a kind of new type lithium ion battery, be provided with battery container, be provided with battery core and electrolyte in battery container, described battery core comprises anode plate, negative plates and the barrier film between anode plate and negative plates, it is characterized in that electrolyte adopts electrolyte described above.
The present invention by adding plurality of stable agent, fire retardant in the electrolyte of lithium ion battery, effective raising lithium battery interior stability, can prevent lithium battery occurrence temperature under severe service condition from raising, catch fire, the serious consequence such as blast, compared with prior art, there is the significant advantages such as efficiency is high, fail safe is good.
Claims (5)
1. a lithium battery electrolytes, comprise lithium salts, additive and the organic solvent for dissolving lithium salts, it is characterized in that described organic solvent account for electrolyte weight ratio be 80% ?89%, comprise following component: ethylene carbonate DEC, dimethyl carbonate DMC, ethyl acetate EC, methyl ethyl carbonate EMC, propene carbonate PC; Additive comprises and accounts for electrolyte weight than the disodium ethylene diamine tetraacetate being 0.15% ?1.6%: account for electrolyte weight than 1, the 3 ?propane sultone PS being 1.12% ?1.5%, account for electrolyte weight than the fire retardant being 1.8% ?2.5%.
2. a kind of lithium battery electrolytes according to claim 1, is characterized in that the ratio of each component is in described organic solvent: ethylene carbonate DEC25% ?30%, dimethyl carbonate DMC22% ?25%, ethyl acetate EC25% ?35%, methyl ethyl carbonate EMC12% ?15%, propene carbonate PC5% ?15%.
3. a kind of lithium battery electrolytes according to claim 1, is characterized in that described lithium salts comprises at least one in LiClO4, LiPF6, LiAsF6 and LiOSO2CF3.
4. a kind of lithium battery electrolytes according to claim 1; it is characterized in that described electrolyte needs to carry out under the protection of the inert gas of drying in layoutprocedure; organic solvent is added fluoridize in bottle and carry out molecular sieve dehydration process; stir; make its water content at below 8ppm; then in the organic solvent stirred, add corresponding additive and lithium salts, and stir, in operating process, control temperature is less than 15 degree.
5. a new type lithium ion battery, be provided with battery container, battery core and electrolyte is provided with in battery container, described battery core comprises anode plate, negative plates and the barrier film between anode plate and negative plates, it is characterized in that electrolyte adopts as the electrolyte in claim 1 ?3 as described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924129.6A CN105552436A (en) | 2015-12-09 | 2015-12-09 | Lithium battery electrolyte and novel lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924129.6A CN105552436A (en) | 2015-12-09 | 2015-12-09 | Lithium battery electrolyte and novel lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN105552436A true CN105552436A (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510924129.6A Pending CN105552436A (en) | 2015-12-09 | 2015-12-09 | Lithium battery electrolyte and novel lithium ion battery |
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| CN (1) | CN105552436A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323430A (en) * | 2020-03-09 | 2020-06-23 | 天津市捷威动力工业有限公司 | Method for detecting sol effect of polymer tab and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434536A (en) * | 2003-03-08 | 2003-08-06 | 汕头市金光高科有限公司 | Method for preparing secondary lithium ion cell electrolyte solution and equipment thereof |
| CN103413968A (en) * | 2012-11-20 | 2013-11-27 | 浙江普耐德新能源科技有限公司 | Lithium battery electrolyte and lithium battery comprising 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 |
-
2015
- 2015-12-09 CN CN201510924129.6A patent/CN105552436A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434536A (en) * | 2003-03-08 | 2003-08-06 | 汕头市金光高科有限公司 | Method for preparing secondary lithium ion cell electrolyte solution and equipment thereof |
| CN103413968A (en) * | 2012-11-20 | 2013-11-27 | 浙江普耐德新能源科技有限公司 | Lithium battery electrolyte and lithium battery comprising 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323430A (en) * | 2020-03-09 | 2020-06-23 | 天津市捷威动力工业有限公司 | Method for detecting sol effect of polymer tab and application |
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Application publication date: 20160504 |