CN107749480A - A kind of lithium ion battery of safeguard construction - Google Patents
A kind of lithium ion battery of safeguard construction Download PDFInfo
- Publication number
- CN107749480A CN107749480A CN201610887794.7A CN201610887794A CN107749480A CN 107749480 A CN107749480 A CN 107749480A CN 201610887794 A CN201610887794 A CN 201610887794A CN 107749480 A CN107749480 A CN 107749480A
- Authority
- CN
- China
- Prior art keywords
- agent
- lithium ion
- ion battery
- anode sizing
- binding agent
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of lithium ion battery of safeguard construction, it includes positive pole, negative pole, electrolyte, barrier film and outer packing, positive pole includes plus plate current-collecting body and is made up of coated on the anode sizing agent on plus plate current-collecting body, anode sizing agent positive active material, conductive agent and binding agent；Negative pole includes negative current collector and is made up of coated on the cathode size on negative current collector, cathode size negative electrode active material, conductive agent and binding agent；Binding agent in anode sizing agent and cathode size is made up of two or more component in Kynoar, butadiene-styrene rubber, Tissuemat E, polypropylene wax, polymethyl methacrylate, acefal homopolymer and polyphenylene oxide.Safeguard construction lithium ion battery of the present invention has heat blocking characteristic；When the temperature of battery is more than 90 DEG C of temperature, bonding agent melts, and the electrolyte of blocking electrode active material and pore interior reacts, and blocks thermal runaway reaction in time, improves the heat endurance of battery.
Description
Technical field
The present invention relates to technical field of lithium-ion battery, more particularly, to a kind of lithium ion battery of safeguard construction.
Background technology
In recent years, the fast development in the field such as portable type electronic product, electric automobile, energy-accumulating power station, to energy storage skill
Art proposes higher requirement.Lithium ion battery turns into the primary selection in these fields due to its high energy density, and
Its energy density also more and more higher.Along with lithium ion battery energy density more and more higher, the safety problem that it faces is increasingly
Sternness, the terminal for seriously limiting lithium ion battery with high energy density use.
The safety problem of lithium ion battery is mainly due to caused by battery thermal runaway.Inside battery is because abnormal heat production is anti-
Should, cause internal temperature of battery persistently to raise, then trigger more heat production side reactions, cause battery catches fire or even explode, so as to
The security of the lives and property of serious threat user.
In order to improve this problem, people improve the security feature of lithium ion battery using various strategies.It can use
Following method, 1, be by ceramic coating improve barrier film heat endurance, avoid causing both positive and negative polarity to connect because of barrier film thermal contraction
Touch, so as to slow down thermal runaway reaction；2nd, the polymer melted at a certain temperature is coated on barrier film, utilizes melting for polymer
Change, the lithium ion conduction passage between inside battery both positive and negative polarity is blocked, so as to avoid the aggravation of battery thermal runaway.
Method 1 has been used widely at present, and can significantly improve the security feature of lithium ion battery.But by
It is only capable of improving the heat endurance of barrier film in the barrier film of coated ceramic, heat production side reaction can not be blocked, therefore its improvement has
Limit.It is only capable of solving the safety problem that energy density is no more than 200wh/kg batteries at present；Method 2 can partly contain the heat of battery
Runaway reaction, but because lithium ion cell electrode is generally all porous electrode, electrolyte is filled in abundant electrode gap；
Although the lithium ion conduction between both positive and negative polarity is blocked, the reaction of electrode interior active material and electrolyte is still continuing
Carry out, thermal accumlation can be further resulted in and trigger thermal runaway reaction, method 2 is not applied for high-energy and high-power lithium ion
Battery system.
The content of the invention
To solve the above problems, it is used as pole piece binding agent, Neng Gou by the use of low melting point polymer the invention provides one kind
The safeguard construction lithium ion battery of lithium ion mobility is obstructed when internal temperature of lithium ion battery is too high.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of lithium ion battery of safeguard construction, it includes positive pole, negative pole, electrolyte, barrier film and outer packing, and positive pole includes
Plus plate current-collecting body and coated on the anode sizing agent on plus plate current-collecting body, anode sizing agent is by positive active material, conductive agent and bonding
Agent forms；Negative pole includes negative current collector and coated on the cathode size on negative current collector, and cathode size is by negative electrode active material
Matter, conductive agent and binding agent composition；Binding agent in anode sizing agent and cathode size is by Kynoar, butadiene-styrene rubber, poly- second
Two or more component composition in alkene wax, polypropylene wax, polymethyl methacrylate, acefal homopolymer and polyphenylene oxide.
After high-power operation a period of time, its internal temperature can increase lithium ion battery, cause wherein after temperature increase
The side reaction such as decomposition increase, and then cause temperature constantly to raise, after internal temperature of lithium ion battery rise, can cause therein
Electrolyte (matter), which is decomposed, causes lithium ion electronics bulging, and lithium ion battery may finally be caused to rupture and cause safe thing
Therefore.Although the binding agent content added in electrodes of lithium-ion batteries slurry is less, play to electrodes of lithium-ion batteries slurry
Adhesion-molded effect, it can be uniformly dispersed in pole piece slurry, really because binding agent needs and can uniformly disperse
Inside slurry, and the gap between each pulp components is clogged, therefore bonded from watery fusion polymer as pole piece slurry
Agent is added in pole piece slurry, can melt the slurry binding agent under high-temperature condition (90~200 DEG C), and after fusing
Binding agent can fill up the passage that space between the various components of slurry blocks inside lithium ion cell Ion transfer, make lithium from
Sub- internal temperature declines, and ensures the safety of lithium ion battery.Tissuemat E, polypropylene wax, polymethyl methacrylate, homopolymerization first
Aldehyde and polyphenylene oxide are that some can not only play cementation but also have the high molecular polymer of low melting point, and its fusing point is 90~200
Between DEG C, the safety of lithium ion battery can be ensured by adding these polymer, while this several polymer is formulated to
Obtain a series of polymer that there are Suitable melting temperatures and Kynoar and butadiene-styrene rubber enhancing adhesive property can be aided in
Combination.
Preferably, in anode sizing agent, the weight ratio of positive active material and conductive agent is 90~95：5~1, positive pole slurry
The content of binding agent is 3~10wt% in material.
Preferably, in cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 91~94：4~2：
1~2.5, the content of binding agent is 2~10wt% in cathode size.
Preferably, in binder component, the molecular weight of Tissuemat E is 2000~200000, the molecular weight of polypropylene wax
For 1000~100000, the molecular weight of polymethyl methacrylate is 80000~200000, and the molecular weight of acefal homopolymer is
20000~110000, the molecular weight of polyphenylene oxide is 2000~50000.
By needing added binding agent can be at high temperature (>=90 DEG C), it is therefore desirable to increase the corresponding of low molecule amount
Polymer；For Tissuemat E, because its own fusing point is relatively low, the Tissuemat E or low molecule of HMW are either added
The Tissuemat E of amount, it, which can be realized, melts in 90~200 DEG C of temperature ranges and hinders the migration of ion；And above-mentioned remove poly- second
Polymer outside alkene wax due between its HMW type and low-molecular-weight type fusion temperature differ greatly, be required for selecting low
The polymer of molecular weight versions；To improve security performance, Tissuemat E preferred molecular weight is 10000~20000, and polypropylene wax is excellent
Select 20000~50000.
Preferably, positive electrode binder is made up of Kynoar, Tissuemat E and polypropylene wax, Kynoar, gather
Ethylene waxes and the weight of polypropylene wax ratio are 8~12：8~12：4~6.
Kynoar is the binding agent commonly used in lithium ion cell positive, on the basis that vinylidene is main binding agent
Upper polymer of the addition with low melting point, it can realize in high temperature after the approach of disconnected Ion transfer, ensure lithium ion battery
Safety.
Preferably, negative electrode binder is made up of equal butadiene-styrene rubber, acefal homopolymer and polymethyl methacrylate, butylbenzene rubber
The weight ratio of glue, polymethyl methacrylate and acefal homopolymer is 12~14：10~12：5~7.
Therefore, the invention has the advantages that：Compared with traditional ceramic coating and polymer coating, the present invention relates to
And safeguard construction lithium ion battery there is heat blocking characteristic；When the temperature of battery is more than 90 DEG C of temperature, inside battery glues
Connect agent to melt, the electrolyte of blocking electrode active material and pore interior reacts, so as to block thermal runaway anti-in time
Answer, improve the heat endurance of battery.
Brief description of the drawings
Fig. 1 is the SEM figures of adhesive surface in anode and cathode slurry before being heat-treated；
Fig. 2 is the SEM figures of adhesive surface in anode and cathode slurry after being heat-treated.
Embodiment
Technical scheme is further described with reference to embodiment.
Comparative example
This comparative example is assembled into flexible packing lithium ion battery using positive pole, negative pole and barrier film；
Specific method is：
A. the preparation of anode pole piece：By positive electrode active materials and conductive agent, bonding agent according to 92:2:6 weight is than mixing
Uniformly obtained anode sizing agent, and anode sizing agent is coated on aluminium foil plus plate current-collecting body, dry and roll；Wherein it is used just
Pole active material is NMC systems, and conductive agent is carbon black conductive agent Super-P, and binding agent is Kynoar；
B. prepared by cathode pole piece：By negative active core-shell material, conductive agent, thickener, bonding agent according to 94:2:1：2.5 weight
Cathode size is coated on copper foil negative current collector surface by amount than cathode size is made after being mixed evenly, by drying
With roll, obtain cathode pole piece；Negative active core-shell material wherein used is graphite, and conductive agent is carbon black conductive agent Super-P, is glued
Knot agent is butadiene-styrene rubber, and thickener is sodium carboxymethylcellulose；
C. prepared cathode pole piece, anode pole piece and barrier film are prepared into battery according to the preparation technology of laminated batteries.
After carrying out preliminary filling, chemical conversion and evacuation to battery, carry out a partial volume and secondary partial volume respectively, after obtain testing battery core.
Embodiment 1
In anode sizing agent, the weight ratio of positive active material and conductive agent is 90：5, the content of binding agent in anode sizing agent
For 3wt%；Wherein binding agent is made up of Kynoar, Tissuemat E and polypropylene wax, Kynoar, Tissuemat E and poly-
The weight ratio of propylene wax is 8：12：4；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 91：4：1, bond in cathode size
The content of agent is 2wt%；Wherein binding agent is made up of butadiene-styrene rubber, polymethyl methacrylate and acefal homopolymer, butadiene-styrene rubber,
The weight of polymethyl methacrylate and acefal homopolymer ratio is 12：10：5；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of Tissuemat E is 2000~5000, and the molecular weight of polypropylene wax is 1000~5000, poly- methyl
The molecular weight of methyl acrylate is 80000~100000, and the molecular weight of acefal homopolymer is 20000~30000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 2
In anode sizing agent, the weight ratio of positive active material and conductive agent is 92：3, the content of binding agent in anode sizing agent
For 5wt%；Wherein binding agent is made up of Kynoar, Tissuemat E and polypropylene wax, Kynoar, Tissuemat E and poly-
The weight ratio of propylene wax is 10：10：5；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 92：3：2, bond in cathode size
The content of agent is 5wt%；Wherein binding agent is made up of butadiene-styrene rubber, polymethyl methacrylate and acefal homopolymer, butadiene-styrene rubber,
The weight of polymethyl methacrylate and acefal homopolymer ratio is 13：11：6；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of Tissuemat E is 10000~20000, and the molecular weight of polypropylene wax is 20000~50000, is gathered
The molecular weight of methyl methacrylate is 130000~150000, and the molecular weight of acefal homopolymer is 70000~80000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 3
In anode sizing agent, the weight ratio of positive active material and conductive agent is 95：1, the content of binding agent in anode sizing agent
For 10wt%；Wherein binding agent is made up of Kynoar, Tissuemat E and polypropylene wax, Kynoar, Tissuemat E and
The weight ratio of polypropylene wax is 12：8：6；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 94：2：2.5, glue in cathode size
The content for tying agent is 10wt%；Wherein binding agent is made up of butadiene-styrene rubber, polymethyl methacrylate and acefal homopolymer, butylbenzene rubber
The weight ratio of glue, polymethyl methacrylate and acefal homopolymer is 14：12：7；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of Tissuemat E is 180000~200000, the molecular weight of polypropylene wax for 80000~
100000, the molecular weight of polymethyl methacrylate is 180000~200000, the molecular weight of acefal homopolymer for 100000~
110000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 4
In anode sizing agent, the weight ratio of positive active material and conductive agent is 90：5, the content of binding agent in anode sizing agent
For 3wt%；Wherein binding agent is made up of Kynoar, polymethyl methacrylate, acefal homopolymer and polyphenylene oxide, polyvinylidene fluoride
Alkene, polymethyl methacrylate, the weight ratio of acefal homopolymer and polyphenylene oxide are 8：12：4：2；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 91：4：1, bond in cathode size
The content of agent is 2wt%；Wherein binding agent is made up of butadiene-styrene rubber, Tissuemat E, polypropylene wax and polyphenylene oxide, butadiene-styrene rubber,
The weight ratio of Tissuemat E, polypropylene wax and polyphenylene oxide is 12：10：5：3；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of polymethyl methacrylate is 80000~100000, and the molecular weight of acefal homopolymer is 20000
~30000, the molecular weight of polyphenylene oxide is 2000~5000, and the molecular weight of Tissuemat E is 2000~5000, point of polypropylene wax
Son amount is 1000~5000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 5
In anode sizing agent, the weight ratio of positive active material and conductive agent is 92：3, the content of binding agent in anode sizing agent
For 5wt%；Wherein binding agent is made up of Kynoar, polymethyl methacrylate, acefal homopolymer and polyphenylene oxide, polyvinylidene fluoride
Alkene, polymethyl methacrylate, the weight ratio of acefal homopolymer and polyphenylene oxide are 10：10：5：3；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 92：3：2, bond in cathode size
The content of agent is 5wt%；Wherein binding agent is made up of butadiene-styrene rubber, Tissuemat E, polypropylene wax and polyphenylene oxide, butadiene-styrene rubber,
The weight ratio of Tissuemat E, polypropylene wax and polyphenylene oxide is 13：11：6：4；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of polymethyl methacrylate is 130000~150000, and the molecular weight of acefal homopolymer is 70000
~80000, the molecular weight of polyphenylene oxide is 24000~26000, and the molecular weight of Tissuemat E is 10000~20000, polypropylene wax
Molecular weight be 20000~50000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 6
In anode sizing agent, the weight ratio of positive active material and conductive agent is 95：1, the content of binding agent in anode sizing agent
For 10wt%；Wherein binding agent is made up of Kynoar, polymethyl methacrylate, acefal homopolymer and polyphenylene oxide, gathers inclined fluorine
Ethene, polymethyl methacrylate, the weight ratio of acefal homopolymer and polyphenylene oxide are 12：8：6：4；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 94：2：2.5, glue in cathode size
The content for tying agent is 10wt%；Wherein binding agent is made up of butadiene-styrene rubber, Tissuemat E, polypropylene wax and polyphenylene oxide, butylbenzene rubber
Glue, Tissuemat E, the weight ratio of polypropylene wax and polyphenylene oxide are 14：12：7：5；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of polymethyl methacrylate is 180000~200000, and the molecular weight of acefal homopolymer is
100000~110000, the molecular weight of polyphenylene oxide is 45000~50000, and the molecular weight of Tissuemat E is 180000~200000,
The molecular weight of polypropylene wax is 80000~100000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 7
In anode sizing agent, the weight ratio of positive active material and conductive agent is 90：5, the content of binding agent in anode sizing agent
For 3wt%；Wherein binding agent is made up of Kynoar and polymethyl methacrylate, Kynoar and polymethylacrylic acid
Methyl esters weight ratio is 2：3；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 91：4：1, bond in cathode size
The content of agent is 2wt%；Wherein binding agent is made up of butadiene-styrene rubber and polypropylene wax, the weight ratio of butadiene-styrene rubber and polypropylene wax
For 12：10；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of polymethyl methacrylate is 80000~100000, the molecular weight of polypropylene wax for 1000~
5000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 8
In anode sizing agent, the weight ratio of positive active material and conductive agent is 92：3, the content of binding agent in anode sizing agent
For 5wt%；Wherein binding agent is made up of Kynoar and polymethyl methacrylate, Kynoar and polymethylacrylic acid
The weight ratio of methyl esters is 1：1；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 92：3：2, bond in cathode size
The content of agent is 5wt%；Wherein binding agent is made up of butadiene-styrene rubber and polypropylene wax, the weight ratio of butadiene-styrene rubber and polypropylene wax
For 13：11；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of polymethyl methacrylate is 130000~150000, and the molecular weight of polypropylene wax is 20000
~50000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Embodiment 9
In anode sizing agent, the weight ratio of positive active material and conductive agent is 95：1, the content of binding agent in anode sizing agent
For 10wt%；Wherein binding agent is made up of Kynoar and polymethyl methacrylate, Kynoar and polymethyl
The weight ratio of sour methyl esters is 3：2；
In cathode size, the weight ratio of negative electrode active material, conductive agent and thickener is 94：2：2.5, glue in cathode size
The content for tying agent is 10wt%；Wherein binding agent is made up of butadiene-styrene rubber and polypropylene wax, the weight of butadiene-styrene rubber and polypropylene wax
Amount is than being 14：12；Thickener is sodium carboxymethylcellulose；
Wherein, the molecular weight of polymethyl methacrylate is 180000~200000, and the molecular weight of polypropylene wax is 80000
~100000；
In addition to the difference of above-mentioned anode sizing agent and cathode size, the compositions of other raw materials, content and battery preparation method are equal
It is identical with comparative example.
Performance test：
1. the binding agent being made up of in anode and cathode slurry before and after such as high-temperature process polymer is entered with SEM
Row morphology observation；It can be found that after 120 DEG C of high-temperature process after being contrasted by Fig. 1 and Fig. 2, polymer melts, former
First spherical polymer fuses together, and plugs existing gap between original polymer spheres, can play barrier ion
The purpose of migration；
2. the battery core of pair above-mentioned comparative example and embodiment carries out inner walkway and safety test test.The inner walkway of battery core
State is 50%SOC states, including ac impedance measurement and DC impedance test；Safety test state is 100%SOC states,
Including pin prick test and hotbox test；Test result is as shown in the table：
Experiment conclusion：The lithium ion battery of safeguard construction involved in the present invention possesses the safety of acupuncture characteristic for meeting to require
With hot tank security feature；Safeguard construction lithium ion battery of the present invention is compared with conventional batteries, peace involved in the present invention
The lithium ion battery of full structure, its DC internal resistance and AC internal Resistance have little to no effect.
Claims (6)
1. a kind of lithium ion battery of safeguard construction, it includes positive pole, negative pole, electrolyte, barrier film and outer packing, and its feature exists
In：Described positive pole includes plus plate current-collecting body and coated on the anode sizing agent on plus plate current-collecting body, and described anode sizing agent is by just
Pole active material, conductive agent and binding agent composition；Described negative pole includes negative current collector and coated on negative current collector
Cathode size, described cathode size are made up of negative electrode active material, conductive agent and binding agent；Anode sizing agent and the negative pole slurry
Binding agent in material is by Kynoar, butadiene-styrene rubber, Tissuemat E, polypropylene wax, polymethyl methacrylate, acefal homopolymer
With two or more component composition in polyphenylene oxide.
A kind of 2. lithium ion battery of safeguard construction according to claim 1, it is characterised in that：Described anode sizing agent
In, the weight ratio of positive active material and conductive agent is 90~95：5~1, in anode sizing agent the content of binding agent for 3~
10wt%。
A kind of 3. lithium ion battery of safeguard construction according to claim 1, it is characterised in that：Described cathode size
In, the weight ratio of negative electrode active material, conductive agent and thickener is 91~94：4~2：1~2.5, binding agent in cathode size
Content is 2~10wt%.
A kind of 4. lithium ion battery of safeguard construction according to claim 1, it is characterised in that：The binder component
In, the molecular weight of Tissuemat E is 2000~200000, and the molecular weight of polypropylene wax is 1000~100000, polymethylacrylic acid
The molecular weight of methyl esters is 80000~200000, and the molecular weight of acefal homopolymer is 20000~110000, and the molecular weight of polyphenylene oxide is
2000~50000.
A kind of 5. lithium ion battery of safeguard construction according to claim 1, it is characterised in that：Described positive electrode binder
It is made up of Kynoar, Tissuemat E and polypropylene wax, the weight ratio of Kynoar, Tissuemat E and polypropylene wax is 8
~12：12~8：4~6.
A kind of 6. lithium ion battery of safeguard construction according to claim 1, it is characterised in that：Described negative electrode binder
It is made up of equal butadiene-styrene rubber, acefal homopolymer and polymethyl methacrylate, butadiene-styrene rubber, polymethyl methacrylate and homopolymerization first
The weight ratio of aldehyde is 12~14：10~12：5~7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887794.7A CN107749480A (en) | 2016-10-11 | 2016-10-11 | A kind of lithium ion battery of safeguard construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887794.7A CN107749480A (en) | 2016-10-11 | 2016-10-11 | A kind of lithium ion battery of safeguard construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107749480A true CN107749480A (en) | 2018-03-02 |
Family
ID=61254546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610887794.7A Pending CN107749480A (en) | 2016-10-11 | 2016-10-11 | A kind of lithium ion battery of safeguard construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107749480A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987754A (en) * | 2018-07-25 | 2018-12-11 | 力信（江苏）能源科技有限责任公司 | The preparation method of dispersing agent, the anode sizing agent containing dispersing agent and its lithium battery |
| CN111048739A (en) * | 2019-12-25 | 2020-04-21 | 中国科学院过程工程研究所 | Ternary positive electrode slurry, preparation method thereof and lithium battery |
| WO2022062890A1 (en) * | 2020-09-25 | 2022-03-31 | 珠海冠宇电池股份有限公司 | Positive electrode plate and lithium-ion battery comprising same |
| CN114374058A (en) * | 2021-12-06 | 2022-04-19 | 武汉中兴创新材料技术有限公司 | Coating diaphragm and preparation method and application thereof |
| CN114824260A (en) * | 2021-01-27 | 2022-07-29 | 郑州宇通集团有限公司 | Safety lithium ion battery |
| CN114824259A (en) * | 2021-01-27 | 2022-07-29 | 郑州宇通集团有限公司 | Lithium ion battery composite positive plate, preparation method thereof and lithium ion battery |
| CN117327460A (en) * | 2023-12-01 | 2024-01-02 | 四川新能源汽车创新中心有限公司 | Adhesive, pole piece, electrolyte membrane for lithium ion battery and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145233C (en) * | 1998-06-25 | 2004-04-07 | 三菱电机株式会社 | Electrode, method of producing electrode, and cell comprising the electrode |
| CN101366133A (en) * | 2006-01-03 | 2009-02-11 | 株式会社Lg化学 | Safety-enhanced electrochemical device |
| CN102265434A (en) * | 2009-01-06 | 2011-11-30 | 株式会社Lg化学 | Positive electrode active material for lithium secondary battery |
| CN105322177A (en) * | 2015-11-16 | 2016-02-10 | 深圳市沃特玛电池有限公司 | Lithium ion battery pole piece and preparation method therefor, and lithium ion battery |
-
2016
- 2016-10-11 CN CN201610887794.7A patent/CN107749480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145233C (en) * | 1998-06-25 | 2004-04-07 | 三菱电机株式会社 | Electrode, method of producing electrode, and cell comprising the electrode |
| CN101366133A (en) * | 2006-01-03 | 2009-02-11 | 株式会社Lg化学 | Safety-enhanced electrochemical device |
| CN102265434A (en) * | 2009-01-06 | 2011-11-30 | 株式会社Lg化学 | Positive electrode active material for lithium secondary battery |
| CN105322177A (en) * | 2015-11-16 | 2016-02-10 | 深圳市沃特玛电池有限公司 | Lithium ion battery pole piece and preparation method therefor, and lithium ion battery |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987754A (en) * | 2018-07-25 | 2018-12-11 | 力信（江苏）能源科技有限责任公司 | The preparation method of dispersing agent, the anode sizing agent containing dispersing agent and its lithium battery |
| CN111048739A (en) * | 2019-12-25 | 2020-04-21 | 中国科学院过程工程研究所 | Ternary positive electrode slurry, preparation method thereof and lithium battery |
| CN111048739B (en) * | 2019-12-25 | 2022-02-18 | 中国科学院过程工程研究所 | Ternary positive electrode slurry, preparation method thereof and lithium battery |
| WO2022062890A1 (en) * | 2020-09-25 | 2022-03-31 | 珠海冠宇电池股份有限公司 | Positive electrode plate and lithium-ion battery comprising same |
| CN114824260A (en) * | 2021-01-27 | 2022-07-29 | 郑州宇通集团有限公司 | Safety lithium ion battery |
| CN114824259A (en) * | 2021-01-27 | 2022-07-29 | 郑州宇通集团有限公司 | Lithium ion battery composite positive plate, preparation method thereof and lithium ion battery |
| CN114374058A (en) * | 2021-12-06 | 2022-04-19 | 武汉中兴创新材料技术有限公司 | Coating diaphragm and preparation method and application thereof |
| CN117327460A (en) * | 2023-12-01 | 2024-01-02 | 四川新能源汽车创新中心有限公司 | Adhesive, pole piece, electrolyte membrane for lithium ion battery and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107749480A (en) | A kind of lithium ion battery of safeguard construction | |
| CN105958009B (en) | A kind of high security lithium ion battery composite pole piece and preparation method thereof, lithium ion battery | |
| CN103117414B (en) | A kind of negative pole lithium titanate battery electrolyte, lithium ion battery and preparation method thereof | |
| CN103730684B (en) | A kind of High-safety all-solid-state lithium ion battery and production method thereof | |
| CN107565086A (en) | Preparation method of battery pole plate | |
| JP2020526897A (en) | Composite solid electrolyte membrane for all-solid-state battery and all-solid-state battery containing it | |
| CN106229447A (en) | A kind of lithium ion battery | |
| CN108963205A (en) | A kind of solid state lithium battery of NEW TYPE OF COMPOSITE anode and its preparation method and application | |
| CN105140450A (en) | Lithium ion battery composite separator, preparation method thereof, and lithium ion battery | |
| CN105870449B (en) | A kind of all solid state lithium-air battery composite positive pole and all solid state lithium-air battery | |
| CN110534795A (en) | The preparation method and solid state battery of solid state battery | |
| KR20150070971A (en) | Lithium ion secondary battery | |
| CN107665994A (en) | A kind of negative material and preparation method thereof, negative pole and all-solid lithium-ion battery | |
| CN106654125A (en) | Method for preparing modified ceramic diaphragm through dopamine compound adhesive and application thereof | |
| CN104112833A (en) | Lithium ion battery separating membrane, preparing method thereof and applications of the separating membrane | |
| CN106450169A (en) | Manufacturing method of negative plate of safety lithium-ion battery | |
| WO2016202168A1 (en) | Lithium-ion battery positive-electrode slurry and preparation method therefor | |
| CN107623098A (en) | A kind of lithium ion battery safety coatings, its application and lithium ion battery | |
| CN105529500A (en) | Manufacturing method for safe lithium ion power battery | |
| CN109817868A (en) | High-voltage and high-safety lithium ion battery and preparation method thereof | |
| JP2015125948A (en) | Lithium ion secondary battery | |
| CN107706338A (en) | A kind of lithium ion battery separator containing positive electrode and preparation method thereof | |
| CN105489843A (en) | Manufacturing method for safe lithium ion power battery positive plate | |
| CN102427123A (en) | Lithium ion secondary battery and anode sheet thereof | |
| CN106558702A (en) | A kind of negative electrode for lithium ion battery slurry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180302 |
|
| RJ01 | Rejection of invention patent application after publication |