CN101673855A - Electrolyte flame-retardant additive of lithium ion battery and lithium ion battery using same - Google Patents
Electrolyte flame-retardant additive of lithium ion battery and lithium ion battery using same Download PDFInfo
- Publication number
- CN101673855A CN101673855A CN200910190248A CN200910190248A CN101673855A CN 101673855 A CN101673855 A CN 101673855A CN 200910190248 A CN200910190248 A CN 200910190248A CN 200910190248 A CN200910190248 A CN 200910190248A CN 101673855 A CN101673855 A CN 101673855A
- Authority
- CN
- China
- Prior art keywords
- ion battery
- lithium ion
- positive
- electrolyte
- negative
- 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.)
- Pending
Links
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses an electrolyte flame-retardant additive of a lithium ion battery. The electrolyte flame-retardant additive is methyl-fluoro-butyl ether accounting for the weight ratio of 1-8%.The invention also discloses the lithium ion battery prepared by electrolyte containing the methyl-fluoro-butyl ether. The invention can be used for remarkably improving the stability of the electrolyte and the lithium ion battery, thus enhancing the cycle performance and the multiplying power charge-discharge performance of the lithium ion battery as well as the safety thereof.
Description
Technical field
The invention provides a kind of electrolyte flame-retardant additive of lithium ion battery and use the lithium ion battery of this additive.
Background technology
Lithium ion battery because have high-energy-density, high voltage, advantage such as volume is little, in light weight, fail safe is good, obtained huge development over past ten years, become one of main power supply of communication class electronic product, at present, some research units and producer have begun one's study and the lithium ion battery of producing high power capacity provides power for electric motor car etc. both at home and abroad.Though the fail safe of lithium ion battery is than higher, but still there are some hidden danger, particularly under the condition of abuse, as high temperature, cross charge and discharge, under the situations such as short circuit, vibration, extruding and bump, the phenomenon of smoldering, catching fire even exploding appears in lithium ion battery easily.Therefore, how to improve the fail safe of lithium ion battery, speed production efficient, the problems such as manufacturing cost in the minimizing manufacture process become the object of industry research.
Summary of the invention
The object of the present invention is to provide the electrolyte flame-retardant additive of the lithium ion battery that a kind of fail safe is good, production efficiency is high, cost is low and use the lithium ion battery of this additive.
Purpose of the present invention is achieved through the following technical solutions:
A kind of electrolyte flame-retardant additive of lithium ion battery is characterized in that: described electrolyte flame-retardant additive be fluoromethane for butyl ether, fluoromethane is 1%-8% for the shared weight ratio of butyl ether.
Described electrolyte comprises organic solvent and lithium salts.
Described organic solvent comprises one or more the mixture in ethylene carbonate, diethyl carbonate, methyl ethyl carbonate, the propene carbonate; Described lithium salts comprises LiPF
6, LiBF
4, LiClO
4, LiAsF
6, one or more the mixture among the LiBOB.
A kind of lithium ion battery that adopts the described electrolyte flame-retardant additive of claim 1 comprises positive pole, negative pole, electrolyte, diaphragm paper and sealing housing, it is characterized in that: described positive pole comprises positive electrode active material, anodal conductive agent, anodal adhesive composition; Described negative pole comprises the composition of negative electrode active material, cathode conductive agent, negative pole binding agent, thickener.
Described positive electrode active material comprises LiCoO
2, LiMn
2O
4, LiFePO
4, LiNiO
2, LiNi
1/3Mn
1/3Co
1/3O
2In one or more mixture, positive electrode active material shared part by weight in positive electrode composition is 88%-96%; Described negative electrode active material comprises one or more the mixture in Delanium, MCMB or modification coats and Erbium-doped the is assorted native graphite, and negative electrode active material shared part by weight in cathode composition is 90%-96%; Described both positive and negative polarity conductive agent comprises one or more group mixture of electrically conductive graphite, acetylene black, nano-silver powder, positive and negative conductive agent respectively in the both positive and negative polarity composition shared part by weight be 1%-5%; Described both positive and negative polarity binding agent comprises one or more the mixture in polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene, polytetrafluoroethylene, acrylic acid, the butadiene-styrene rubber, and positive and negative binding agent shared part by weight in the both positive and negative polarity composition is 1%-7%; Described thickener is a sodium carboxymethylcellulose, and thickener shared part by weight in cathode composition is 1%-3%.
The conductivity of described electrolyte is 7.0-13ms/cm.
Described diaphragm paper adopts three layers of composite membrane of PP/PE/PP, and its thickness is at 14-45um, and porosity is at 30-60%.
Described sealing housing is aluminum plastic film or aluminum hull or box hat.
Described positive pole, negative pole also need add solvent when process for preparation, described solvent is a kind of in high-purity deionized water and the N-methyl pyrrolidone, high-purity deionized water conductivity≤3us/cm, described N-methyl pyrrolidone moisture≤0.01%.
The present invention compared with prior art has the following advantages,
The present invention has improved the fail safe of battery in essence from electric core, has guaranteed the fail safe of battery under the abuse state, no longer has potential safety hazard; Reduce the battery product cost, cancelled the safeguard measure that battery in use adds, from having solved the fail safe of battery in essence; Accelerate production efficiency, reduced the manufacturing cost in the manufacture process.
Embodiment
Below the present invention is further described:
A kind of electrolyte flame-retardant additive of lithium ion battery is characterized in that: described electrolyte flame-retardant additive be fluoromethane for butyl ether, fluoromethane is 1%-8% for the shared weight ratio of butyl ether.
Described electrolyte comprises organic solvent and lithium salts.
Described organic solvent comprises one or more the mixture in ethylene carbonate, diethyl carbonate, methyl ethyl carbonate, the propene carbonate; Described lithium salts comprises LiPF
6, LiBF
4, LiClO
4, LiAsF
6, one or more the mixture among the LiBOB.
A kind of lithium ion battery that adopts the described electrolyte flame-retardant additive of claim 1 comprises positive pole, negative pole, electrolyte, diaphragm paper and sealing housing, it is characterized in that: described positive pole comprises positive electrode active material, anodal conductive agent, anodal adhesive composition; Described negative pole comprises the composition of negative electrode active material, cathode conductive agent, negative pole binding agent, thickener.
Described positive electrode active material comprises LiCoO
2, LiMn
2O
4, LiFePO
4, LiNiO
2, LiNi
1/3Mn
1/3Co
1/3O
2In one or more mixture, positive electrode active material shared part by weight in positive electrode composition is 88%-96%; Described negative electrode active material comprises one or more the mixture in Delanium, MCMB or modification coats and Erbium-doped the is assorted native graphite, and negative electrode active material shared part by weight in cathode composition is 90%-96%; Described both positive and negative polarity conductive agent comprises one or more group mixture of electrically conductive graphite, acetylene black, nano-silver powder, positive and negative conductive agent respectively in the both positive and negative polarity composition shared part by weight be 1%-5%; Described both positive and negative polarity binding agent comprises one or more the mixture in polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene, polytetrafluoroethylene, acrylic acid, the butadiene-styrene rubber, and positive and negative binding agent shared part by weight in the both positive and negative polarity composition is 1%-7%; Described thickener is a sodium carboxymethylcellulose, and thickener shared part by weight in cathode composition is 1%-3%.
The conductivity of described electrolyte is 7.0-13ms/cm.
Described diaphragm paper adopts three layers of composite membrane of PP/PE/PP, and its thickness is at 14-45um, and porosity is at 30-60%.
Described sealing housing is aluminum plastic film or aluminum hull or box hat.
Described positive pole, negative pole also need add solvent when process for preparation, described solvent is a kind of in high-purity deionized water and the N-methyl pyrrolidone, high-purity deionized water conductivity≤3us/cm, described N-methyl pyrrolidone moisture≤0.01%.
Claims (9)
1, a kind of electrolyte flame-retardant additive of lithium ion battery is characterized in that: described electrolyte flame-retardant additive be fluoromethane for butyl ether, fluoromethane is 1%-8% for the shared weight ratio of butyl ether.
2, the electrolyte flame-retardant additive of lithium ion battery according to claim 1, it is characterized in that: described electrolyte comprises organic solvent and lithium salts.
3, the electrolyte flame-retardant additive of lithium ion battery according to claim 2 is characterized in that: described organic solvent comprises one or more the mixture in ethylene carbonate, diethyl carbonate, methyl ethyl carbonate, the propene carbonate; Described lithium salts comprises LiPF
6, LiBF
4, LiClO
4, LiAsF
6, one or more the mixture among the LiBOB.
4, a kind of lithium ion battery that adopts the described electrolyte flame-retardant additive of claim 1, comprise positive pole, negative pole, electrolyte, diaphragm paper and sealing housing, it is characterized in that: described positive pole comprises positive electrode active material, anodal conductive agent, anodal adhesive composition; Described negative pole comprises the composition of negative electrode active material, cathode conductive agent, negative pole binding agent, thickener.
5, lithium ion battery according to claim 4 is characterized in that: described positive electrode active material comprises LiCoO
2, LiMn
2O
4, LiFePO
4, LiNiO
2, LiNi
1/3Mn
1/3Co
1/3O
2In one or more mixture, positive electrode active material shared part by weight in positive electrode composition is 88%-96%; Described negative electrode active material comprises one or more the mixture in Delanium, MCMB or modification coats and Erbium-doped the is assorted native graphite, and negative electrode active material shared part by weight in cathode composition is 90%-96%; Described both positive and negative polarity conductive agent comprises one or more mixture of electrically conductive graphite, acetylene black, nano-silver powder, positive and negative conductive agent respectively in the both positive and negative polarity composition shared part by weight be 1%-5%; Described both positive and negative polarity binding agent comprises one or more the mixture in polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene, polytetrafluoroethylene, acrylic acid, the butadiene-styrene rubber, and positive and negative binding agent shared part by weight in the both positive and negative polarity composition is 1%-7%; Described thickener is a sodium carboxymethylcellulose, and thickener shared part by weight in cathode composition is 1%-3%.
6, lithium ion battery according to claim 4 is characterized in that: the conductivity of described electrolyte is 7.0-13ms/cm.
7, lithium ion battery according to claim 4 is characterized in that: described diaphragm paper adopts three layers of composite membrane of PP/PE/PP, and its thickness is at 14-45um, and porosity is at 30-60%.
8, lithium ion battery according to claim 4 is characterized in that: described sealing housing is aluminum plastic film or aluminum hull or box hat.
9, lithium ion battery according to claim 4, it is characterized in that: described positive pole, negative pole also need add solvent when process for preparation, described solvent is a kind of in high-purity deionized water and the N-methyl pyrrolidone, high-purity deionized water conductivity≤3us/cm, described N-methyl pyrrolidone moisture≤0.01%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910190248A CN101673855A (en) | 2009-09-25 | 2009-09-25 | Electrolyte flame-retardant additive of lithium ion battery and lithium ion battery using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910190248A CN101673855A (en) | 2009-09-25 | 2009-09-25 | Electrolyte flame-retardant additive of lithium ion battery and lithium ion battery using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101673855A true CN101673855A (en) | 2010-03-17 |
Family
ID=42020932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910190248A Pending CN101673855A (en) | 2009-09-25 | 2009-09-25 | Electrolyte flame-retardant additive of lithium ion battery and lithium ion battery using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101673855A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576291A (en) * | 2015-12-18 | 2016-05-11 | 苏州华一新能源科技有限公司 | Lithium ion battery and electrolyte for high-voltage lithium ion battery |
| CN106025351A (en) * | 2016-07-06 | 2016-10-12 | 无锡市宝来电池有限公司 | Lithium ion electrolyte safe to use and lithium ion battery |
| CN106663846A (en) * | 2014-07-14 | 2017-05-10 | 科慕埃弗西有限公司 | Composition for retarding combustion of lithium ion battery |
-
2009
- 2009-09-25 CN CN200910190248A patent/CN101673855A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663846A (en) * | 2014-07-14 | 2017-05-10 | 科慕埃弗西有限公司 | Composition for retarding combustion of lithium ion battery |
| CN105576291A (en) * | 2015-12-18 | 2016-05-11 | 苏州华一新能源科技有限公司 | Lithium ion battery and electrolyte for high-voltage lithium ion battery |
| CN105576291B (en) * | 2015-12-18 | 2019-01-29 | 苏州华一新能源科技有限公司 | A kind of high-voltage lithium ion battery electrolyte and lithium ion battery |
| CN106025351A (en) * | 2016-07-06 | 2016-10-12 | 无锡市宝来电池有限公司 | Lithium ion electrolyte safe to use and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102479973B (en) | Silicon cathode lithium ion battery | |
| CN107069093B (en) | High-concentration ester electrolyte for lithium-sulfur battery | |
| CN108987808B (en) | High-voltage lithium ion battery non-aqueous electrolyte and lithium ion battery | |
| CN112531212B (en) | Non-aqueous electrolyte with high-temperature characteristic and low impedance, application thereof and lithium ion battery | |
| CN109888384B (en) | Electrolyte and battery containing the same | |
| WO2011125397A1 (en) | Electrolyte for non-aqueous electrolyte batteries and non-aqueous electrolyte battery using the same | |
| JP7168851B2 (en) | Electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using the same | |
| CN111525190B (en) | Electrolyte and lithium ion battery | |
| CN103779607A (en) | Electrolyte solution and lithium-ion secondary battery | |
| CN102394314A (en) | Lithium ion battery electrolyte and lithium ion secondary battery | |
| CN104466248A (en) | Electrolyte of lithium ion battery and lithium ion battery utilizing same | |
| CN105633467A (en) | Electrolyte and lithium ion battery adopting same | |
| KR101298868B1 (en) | Nonaqueous electrolyte and lithium-ion secondary battery using thereof | |
| JP7432608B2 (en) | Positive electrode piece, electrochemical device and electronic device including the positive electrode piece | |
| JP7432607B2 (en) | Positive electrode piece, electrochemical device and electronic device including the positive electrode piece | |
| KR20120101867A (en) | Anode active agent and electrochemical device comprising the same | |
| JP2021534555A (en) | Lithium ion secondary battery | |
| WO2011102171A1 (en) | Secondary battery | |
| US20200136183A1 (en) | Electrolyte and lithium ion battery | |
| CN105789685A (en) | Lithium ion battery and electrolyte thereof | |
| CN105098238A (en) | Lithium ion secondary battery and electrolyte thereof | |
| CN105789703A (en) | Lithium difluoborate containing sulfonate group and battery employing lithium salt | |
| CN112928328A (en) | Lithium ion battery electrolyte containing silane sulfonamide compound and lithium ion secondary battery | |
| JP2024536612A (en) | Positive electrode piece and lithium ion secondary battery including the same | |
| CN105449274A (en) | Lithium ion battery and electrolyte solution thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100317 |