CN101872853B - Polymer lithium ion secondary battery and isolating membrane thereof - Google Patents
Polymer lithium ion secondary battery and isolating membrane thereof Download PDFInfo
- Publication number
- CN101872853B CN101872853B CN2010101570339A CN201010157033A CN101872853B CN 101872853 B CN101872853 B CN 101872853B CN 2010101570339 A CN2010101570339 A CN 2010101570339A CN 201010157033 A CN201010157033 A CN 201010157033A CN 101872853 B CN101872853 B CN 101872853B
- Authority
- CN
- China
- Prior art keywords
- lithium
- polymer
- ion secondary
- secondary battery
- lithium ion
- 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.)
- Active
Links
Images
Classifications
-
- 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 invention discloses an isolating membrane of lithium ion secondary battery, comprising a porous substrate and a polymer coating distributed only on a surface of the porous substrate which faces an anode of the lithium ion secondary battery, wherein the polymer in the polymer coating is selected from poly(methyl methacrylate-acrylonitrile), poly(methyl methacrylate-vinyl acetate), poly(methyl methacrylate-acrylonitrile-vinyl acetate), poly(n-butyl methacrylate-styrene), or blends of the polymers. The polymer unit in the polymer coating of the isolating membrane of the lithium ion secondary battery contains carbonyl, wherein very strong effect exists between the carbonyl and oxygen in carbonic acid ester type organic solvent so as to have fine solution suction ability and good interface stability of lithium electrode or anode; the membrane has strong adhesive property and film formation, and can provide fine mechanical tensile strength; and the membrane has fine cycle performance and safety performance. The invention further discloses a polymer lithium ion secondary battery using the membrane.
Description
Technical field
The present invention relates to a kind of lithium rechargeable battery, especially a kind of polymer lithium ion secondary battery and barrier film thereof with Good Security.
Background technology
Since the eighties of last century appearance nineties, lithium rechargeable battery because of have the energy density height, have extended cycle life, the advantage such as operating voltage height and non-environmental-pollution is widely used in providing the energy for the various mobile devices such as video camera, notebook computer, portable DVD player, digital camera and device, is described as " green high-capacity environment-protecting battery ".
But lithium rechargeable battery has serious safety issue usually: the inflammable easy seepage of liquid organic solvent, and may cause lithium rechargeable battery burning or blast.In order to improve the security performance of lithium rechargeable battery, can use the solid electrolyte (SPE) that does not contain any solvent molecule.But SPE ionic conductivity at room temperature only is 1 * 10
-5Scm
-1, the ionic conductivity than liquid electrolyte hangs down three orders of magnitude approximately.The gel polymer lithium ion secondary cell has appearred in the compromise product as liquid electrolyte lithium rechargeable battery and solid electrolyte lithium rechargeable battery.The gel polymer lithium ion secondary cell has possessed the high ionic conductivity of liquid electrolyte and the high safety performance of solid electrolyte simultaneously, has therefore at home and abroad caused widely and has paid close attention to.
Prior art has also disclosed the multiple polymers lithium rechargeable battery, as in No. 200610123986.7, the Chinese invention patent CN of on December 1st, 2006 application, in No. 200810029569.5, the Chinese invention patent application CN of application on July 18th, 2008, and just disclosed respectively multiple lithium rechargeable battery gel polymer electrolyte and preparation method thereof No. 200810219235.4 in the Chinese invention patent application CN of application on November 19th, 2008.
Although above-mentioned existing gel polymer electrolyte has preferably chemical property in simulated battery or button cell, but, when being applied to the production of industrialization lithium rechargeable battery, irreversible oxidation Decomposition can occur at the negative electrode of battery in the impurity matter that may be mingled with in the polymer, increased the irreversible capacity loss of circulating battery, the battery capacity that obtains decay especially severe has had a strong impact on the cycle performance of lithium rechargeable battery.
Summary of the invention
One object of the present invention is: overcome the deficiencies in the prior art, a kind of lithium rechargeable battery barrier film with good circulation performance and security performance is provided.
In order to realize the foregoing invention purpose, the invention provides a kind of lithium rechargeable battery barrier film, it comprises porous substrate and only is distributed in porous substrate towards the lip-deep polymer coating of the anode of lithium rechargeable battery.
As a kind of improvement of lithium rechargeable battery barrier film of the present invention, described porous substrate is nonwoven fabrics, polyethene microporous membrane, microporous polypropylene membrane, or the polyethylene of MULTILAYER COMPOSITE and microporous polypropylene membrane.
A kind of improvement as lithium rechargeable battery barrier film of the present invention, polymer in the described polymer coating is selected from polymethyl methacrylate, polyacrylonitrile, polyethylene glycol oxide, Kynoar, polyvinyl acetate, polyvinyl chloride, Kynoar-hexafluoropropylene, poly-(methyl methacrylate-acrylonitrile), poly-(methyl methacrylate-vinyl acetate), poly-(methyl methacrylate-acrylonitrile-vinyl acetate), poly-(n-BMA-styrene), or be the copolymer of described polymer monomer, or be the blend of described polymer.
A kind of improvement as lithium rechargeable battery barrier film of the present invention, be doped with nanometer or micron order inorganic particle in the described polymer coating, described inorganic particle is selected from alundum (Al2O3), silicon dioxide, zirconium dioxide, titanium dioxide, ceria, calcium oxide, calcium carbonate, barium titanate, titanium phosphate lithium, rare earth, clay, zeolite or its combination.
As a kind of improvement of lithium rechargeable battery barrier film of the present invention, described polymer coating is distributed in a surface of porous substrate by printing, spraying, coating method.
With respect to prior art, lithium rechargeable battery barrier film of the present invention has the following advantages: contain carbonyl in the polymer unit of (1) polymer coating, between the oxygen in carbonyl and the carbonates organic solvent very strong effect is arranged, have good imbibition ability, simultaneously good with the interface stability of lithium electrode or anode; (2) stronger caking property and film forming are arranged, good mechanical tensile strength can be provided, be conducive to the further processing such as lithium rechargeable battery lamination or coiling; (3) have good cycle performance and security performance.
Another object of the present invention is: a kind of polymer lithium ion secondary battery with good circulation performance and security performance is provided.
In order to realize the foregoing invention purpose, the invention provides a kind of polymer lithium ion secondary battery, it comprises: (a) cathode sheets, (b) anode strip, (c) are distributed in the barrier film between cathode sheets and the anode strip, and (d) electrolyte, wherein, barrier film is aforementioned lithium rechargeable battery barrier film, and the one side that barrier film is distributed with polymer coating directly contacts with anode.
A kind of improvement as polymer lithium ion secondary battery of the present invention, described anode strip contains active material of positive electrode, and active material of positive electrode is selected from Delanium, native graphite, carbonaceous mesophase spherules, mesocarbon fiber, soft carbon, hard carbon, lithium titanate or its combination.
A kind of improvement as polymer lithium ion secondary battery of the present invention, described cathode sheets contains active material of cathode, and active material of cathode is selected from cobalt acid lithium, lithium nickelate, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiMn2O4, LiFePO 4, lithium manganese phosphate, phosphoric acid vanadium lithium or its combination.
As a kind of improvement of polymer lithium ion secondary battery of the present invention, described electrolyte comprises lithium salts, nonaqueous solvents and additive.
As a kind of improvement of polymer lithium ion secondary battery of the present invention, described lithium salts is selected from lithium hexafluoro phosphate, LiBF4, bis trifluoromethyl sulfimide base lithium, di-oxalate lithium borate, oxalic acid two lithium fluoroborate, lithium perchlorates, enjoy a double blessing fluoroalkyl three lithium fluophosphates or its combination; Described nonaqueous solvents is selected from ethylene carbonate, propene carbonate, butylene, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, methyl propyl carbonate, butyrolactone, valerolactone, ethyl acetate, propyl acetate, butyl acetate, methyl propionate, ethyl propionate, propyl propionate or its combination; Described additive is selected from additive or its combination of SEI film for additive, anti-overcharge additive, flame-retardant additive, electrolyte stabilizing agent, raising conductivity.
With respect to prior art, polymer lithium ion secondary battery of the present invention has the following advantages: (1) liquid inflammable organic solvent is attracted in the polymeric matrix, can prevent the safety issue that the leakage of organic bath causes, even lithium rechargeable battery overcharges, can on fire or blast yet.(2) cathode sheets in the battery core can not contact polymer, can effectively avoid polymeric impurities to decompose and the irreversible capacity loss that causes or can't work at cathode oxidation, and battery has good cycle performance.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail, wherein:
Fig. 1 is the embodiment 1 of comparative example barrier film and lithium rechargeable battery barrier film of the present invention and 2 hot strength comparison diagram.
Fig. 2 is that the embodiment of the invention 1 polymer lithium ion secondary battery overcharges in the test at 1C/12V, cell voltage and battery core temperature time history plot.
Fig. 3 be comparative example polymer lithium ion secondary battery and the embodiment of the invention 1 polymer lithium ion secondary battery at normal temperatures, the discharge capacity comparison diagram of 3.0V to 4.2V charge and discharge cycles (charging of 1C multiplying power, 1C multiplying power discharging).
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in further detail, but embodiments of the invention are not limited to this.
Comparative example
The preparation of barrier film: get the polyethylene of undressed porous substrate MULTILAYER COMPOSITE and microporous polypropylene membrane (barrier film before processing) in contrast.
The preparation of polymer lithium ion secondary battery: will contain cathode sheets, the above-mentioned barrier film of active material of cathode cobalt acid lithium, the anode strip that contains the active material of positive electrode Delanium is wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, battery core and the electrolyte that is comprised of lithium salts lithium hexafluoro phosphate and nonaqueous solvents ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate are encapsulated in the pack case, make polymer lithium ion secondary battery.
Embodiment 1
The preparation of barrier film: under 25 ℃, polymer poly (methyl methacrylate-vinyl acetate) is dissolved in the acetone solvent, the acquisition solid content is 2% solution; Then, solution is processed on a surface of the polyethylene of porous substrate MULTILAYER COMPOSITE and microporous polypropylene membrane by printing process, obtained the polymeric barrier films that single face is processed.
The preparation of polymer lithium ion secondary battery: the polymeric barrier films that the single face that will contain the cathode sheets of active material of cathode cobalt acid lithium, makes according to said method is processed, the anode strip that contains the active material of positive electrode Delanium are wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, the polymeric barrier films that single face is processed directly contacts with anode strip, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, battery core and the electrolyte that is comprised of lithium salts lithium hexafluoro phosphate and nonaqueous solvents ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate are encapsulated in the pack case, make polymer lithium ion secondary battery.
Fig. 1 is the embodiment 1 of comparative example barrier film and lithium rechargeable battery barrier film of the present invention and 2 hot strength comparison diagram, as can be seen from the figure: the hot strength of the barrier film before processing is about 11.7MPa, be printed on one side behind the polymer coating, polymer coating does not only reduce the hot strength of barrier film, makes on the contrary the hot strength of barrier film increase to about 13.4MPa.The increase of hot strength makes barrier film have better processing characteristics, can stand harsher coiling and lamination process.
Embodiment 1 polymer lithium ion secondary battery is carried out the test of full cell safety, drift bolt, short circuit, push, all not on fire or smolder or explode when overcharging.Wherein, it is as follows that 1C/12V overcharges method of testing: with mesuring battary with the current discharge of 1C multiplying power to 3.0V, the electric current with the 1C multiplying power charges to 12V with battery again, and keeps the voltage 6 hours of 12V.Fig. 2 is that the polymer lithium ion secondary battery of the embodiment of the invention 1 overcharges cell voltage and battery core temperature time history plot in the test at 1C/12V, as can be seen from the figure: after charging 2 hours, the voltage of battery sharply rises to 12V, the temperature of battery rises to 120 ℃, electrolyte also consumes along with oxidized decomposition, battery short circuit, the very fast decline of the voltage of whole battery, this moment, temperature was also along with decline.Whole overcharging in the process, battery do not have on fire or smolder or explode, and have good security performance.
Fig. 3 be comparative example polymer lithium ion secondary battery and the embodiment of the invention 1 polymer lithium ion secondary battery at normal temperatures, between the 3.0V to 4.2V with the discharge capacity comparison diagram of the charge and discharge cycles of the charging of 1C multiplying power, 1C multiplying power discharging.As can be seen from the figure: through after 355 charge and discharge cycles, the discharge capacity of the polymer lithium ion secondary battery of the polymeric barrier films that the embodiment of the invention 1 use single face is processed is about 96% (1107mA.h drops to 1067mA.h by initial capacity) of initial capacity, and comparative example does not use the polymer lithium ion secondary battery of the polymeric barrier films of single face processing can only keep about 93% discharge capacity (1109mA.h drops to 1032mA.h by initial capacity).As seen, the polymer coating single face is processed on porous substrate, can be improved the charge-discharge performance of battery, improve the utilance of the charge/discharge capacity of lithium rechargeable battery.
Embodiment 2
The preparation of barrier film: under 35 ℃, polymer poly (methyl methacrylate-acrylonitrile) is dissolved in the acetone solvent, the acquisition solid content is 3% solution; Then, solution is processed on a surface of porous substrate microporous polypropylene membrane by coating process, obtained the polymeric barrier films that single face is processed.
The preparation of polymer lithium ion secondary battery: the polymeric barrier films that the single face that will contain the cathode sheets of active material of cathode nickle cobalt lithium manganate, makes according to said method is processed, the anode strip that contains the active material of positive electrode carbonaceous mesophase spherules are wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, the polymeric barrier films that single face is processed directly contacts with anode strip, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, with battery core and by the lithium salts lithium hexafluoro phosphate, the electrolyte that nonaqueous solvents ethylene carbonate, propene carbonate, methyl ethyl carbonate and SEI film for additive form is encapsulated in the pack case, makes polymer lithium ion secondary battery.
Embodiment 3
The preparation of barrier film: under 30 ℃, the copolymer polymethyl methacrylate of polymer monomer is dissolved in the acetone solvent, obtains solid content and be 4% solution; In solution, add an amount of nanometer grade silica particle and silica dioxide granule is uniformly dispersed; Then, aforementioned solution is processed on a surface of porous substrate nonwoven fabrics microporous barrier by spraying method, obtained the polymeric barrier films that single face is processed.
The preparation of polymer lithium ion secondary battery: the polymeric barrier films that the single face that will contain the cathode sheets of active material of cathode cobalt acid lithium, makes according to said method is processed, the anode strip that contains the active material of positive electrode Delanium are wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, the polymeric barrier films that single face is processed directly contacts with anode strip, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, battery core and the electrolyte that is comprised of lithium salts lithium hexafluoro phosphate and nonaqueous solvents ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate are encapsulated in the pack case, make polymer lithium ion secondary battery.
Embodiment 4
The preparation of barrier film: under 23 ℃, polymer poly (biasfluoroethylene-hexafluoropropylene) is dissolved in the acetone solvent, the acquisition solid content is 5% solution; In solution, add an amount of micron order alundum (Al2O3) particle and the alundum (Al2O3) particle is uniformly dispersed; Then, aforementioned solution is processed on a surface of porous substrate polyethene microporous membrane by coating process, obtained the polymeric barrier films that single face is processed.
The preparation of polymer lithium ion secondary battery: the polymeric barrier films that the single face that will contain the cathode sheets of active material of cathode cobalt acid lithium, makes according to said method is processed, the anode strip that contains the active material of positive electrode Delanium are wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, the polymeric barrier films that single face is processed directly contacts with anode strip, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, battery core and the electrolyte that is comprised of lithium salts lithium hexafluoro phosphate and nonaqueous solvents ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate are encapsulated in the pack case, make polymer lithium ion secondary battery.
Embodiment 5
The preparation of barrier film: under 23 ℃, the blend of polymer poly (biasfluoroethylene-hexafluoropropylene) and polymer poly ethylene oxide is dissolved in the acetone solvent, obtains solid content and be 5% solution; In solution, add an amount of micron order alundum (Al2O3) particle and the alundum (Al2O3) particle is uniformly dispersed; Then, aforementioned solution is processed on a surface of porous substrate polyethene microporous membrane by coating process, obtained the polymeric barrier films that single face is processed.
The preparation of polymer lithium ion secondary battery: the polymeric barrier films that the single face that will contain the cathode sheets of active material of cathode cobalt acid lithium, makes according to said method is processed, the anode strip that contains the active material of positive electrode Delanium are wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, the polymeric barrier films that single face is processed directly contacts with anode strip, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, battery core and the electrolyte that is comprised of lithium salts lithium hexafluoro phosphate and nonaqueous solvents ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate are encapsulated in the pack case, make polymer lithium ion secondary battery.
Embodiment 6
The preparation of barrier film: under 28 ℃, the copolymer polyvinylidene fluoride of polymer monomer is dissolved in the acetone solvent, obtains solid content and be 6% solution; In solution, add an amount of micron order titanium dioxide granule and titanium dioxide granule is uniformly dispersed; Then, solution is processed on a surface of porous substrate microporous polypropylene membrane by the method for spraying, obtained the polymeric barrier films that single face is processed.
The preparation of polymer lithium ion secondary battery: the polymeric barrier films that the single face that will contain the cathode sheets of active material of cathode cobalt acid lithium, makes according to said method is processed, the anode strip that contains the active material of positive electrode Delanium are wound into battery core, barrier film is interval between the adjacent yin, yang pole piece, the polymeric barrier films that single face is processed directly contacts with anode strip, negative electrode is drawn with aluminium pole ears spot welding, and anode is drawn with the spot welding of nickel lug; Subsequently, battery core and the electrolyte that is comprised of lithium salts lithium hexafluoro phosphate and nonaqueous solvents ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate are encapsulated in the pack case, make polymer lithium ion secondary battery.
Be understandable that, although the nanometer or the micron order inorganic particle that have only mixed in the polymer coating as example has illustrated take silicon dioxide, alundum (Al2O3), titanium dioxide granule respectively among above-described embodiment 3-6.But, according to other embodiments of the invention, the nanometer of mixing in the polymer coating or micron order inorganic particle also can be zirconium dioxide, ceria, calcium oxide, calcium carbonate, barium titanate, titanium phosphate lithium, rare earth, clay, zeolite, or the combination in any of above-mentioned inorganic particle.
In addition, in the polymer lithium ion secondary battery of the present invention, polymer in the polymer coating of barrier film can be selected from polymethyl methacrylate, polyacrylonitrile, polyethylene glycol oxide, Kynoar, polyvinyl acetate, polyvinyl chloride, Kynoar-hexafluoropropylene, poly-(methyl methacrylate-acrylonitrile), poly-(methyl methacrylate-vinyl acetate), poly-(methyl methacrylate-acrylonitrile-vinyl acetate), poly-(n-BMA-styrene), or be the copolymer of described polymer monomer, or be the blend of described polymer; Active material of positive electrode on the anode strip also can be selected from Delanium, native graphite, carbonaceous mesophase spherules, mesocarbon fiber, soft carbon, hard carbon, lithium titanate or its combination; Active material of cathode can be selected from cobalt acid lithium, lithium nickelate, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiMn2O4, LiFePO 4, lithium manganese phosphate, phosphoric acid vanadium lithium or its combination; Lithium salts in the electrolyte can be selected from lithium hexafluoro phosphate, LiBF4, bis trifluoromethyl sulfimide base lithium, di-oxalate lithium borate, oxalic acid two lithium fluoroborate, lithium perchlorates, enjoy a double blessing fluoroalkyl three lithium fluophosphates or its combination; Nonaqueous solvents can be selected from ethylene carbonate, propene carbonate, butylene, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, methyl propyl carbonate, butyrolactone, valerolactone, ethyl acetate, propyl acetate, butyl acetate, methyl propionate, ethyl propionate, propyl propionate or its combination; Additive can be selected from additive or its combination of SEI film for additive, anti-overcharge additive, flame-retardant additive, electrolyte stabilizing agent, raising conductivity.
The according to the above description announcement of book and instruction, those skilled in the art in the invention can also change and revise above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the present invention just for convenience of description.
Claims (9)
1. lithium rechargeable battery barrier film, it comprises porous substrate and only is distributed in porous substrate towards the lip-deep polymer coating of the anode of lithium rechargeable battery, polymer in the described polymer coating is selected from poly-(methyl methacrylate-acrylonitrile), poly-(methyl methacrylate-vinyl acetate), poly-(methyl methacrylate-acrylonitrile-vinyl acetate), poly-(n-BMA-styrene), or is the blend of described polymer.
2. lithium rechargeable battery barrier film according to claim 1, it is characterized in that: described porous substrate is polyethylene and the microporous polypropylene membrane of nonwoven fabrics, polyethene microporous membrane, microporous polypropylene membrane or MULTILAYER COMPOSITE.
3. lithium rechargeable battery barrier film according to claim 1, it is characterized in that: be doped with nanometer or micron order inorganic particle in the described polymer coating, inorganic particle is selected from alundum (Al2O3), silicon dioxide, zirconium dioxide, titanium dioxide, ceria, calcium oxide, calcium carbonate, barium titanate, titanium phosphate lithium, rare earth, clay, zeolite or its combination.
4. lithium rechargeable battery barrier film according to claim 1, it is characterized in that: described polymer coating is distributed on the surface of described porous substrate by printing, spraying, coating method.
5. polymer lithium ion secondary battery, it comprises: (a) cathode sheets, (b) anode strip, (c) are distributed in the barrier film between cathode sheets and the anode strip, and (d) electrolyte, it is characterized in that: described barrier film is each described barrier film in the claim 1 to 4, and the one side that barrier film is distributed with polymer coating directly contacts with described anode strip.
6. polymer lithium ion secondary battery according to claim 5, it is characterized in that: contain active material of positive electrode on the described anode strip, active material of positive electrode is selected from Delanium, native graphite, carbonaceous mesophase spherules, mesocarbon fiber, soft carbon, hard carbon, lithium titanate or its combination.
7. polymer lithium ion secondary battery according to claim 5, it is characterized in that: described cathode sheets contains active material of cathode, and active material of cathode is selected from cobalt acid lithium, lithium nickelate, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiMn2O4, LiFePO 4, lithium manganese phosphate, phosphoric acid vanadium lithium or its combination.
8. polymer lithium ion secondary battery according to claim 5, it is characterized in that: described electrolyte comprises lithium salts, nonaqueous solvents and additive.
9. polymer lithium ion secondary battery according to claim 8 is characterized in that: described lithium salts is selected from lithium hexafluoro phosphate, LiBF4, bis trifluoromethyl sulfimide base lithium, di-oxalate lithium borate, oxalic acid two lithium fluoroborate, lithium perchlorates, enjoy a double blessing fluoroalkyl three lithium fluophosphates or its combination; Described nonaqueous solvents is selected from ethylene carbonate, propene carbonate, butylene, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, methyl propyl carbonate, butyrolactone, valerolactone, ethyl acetate, propyl acetate, butyl acetate, methyl propionate, ethyl propionate, propyl propionate or its combination; Described additive is selected from additive or its combination of SEI film for additive, anti-overcharge additive, flame-retardant additive, electrolyte stabilizing agent, raising conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101570339A CN101872853B (en) | 2010-04-21 | 2010-04-21 | Polymer lithium ion secondary battery and isolating membrane thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101570339A CN101872853B (en) | 2010-04-21 | 2010-04-21 | Polymer lithium ion secondary battery and isolating membrane thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101872853A CN101872853A (en) | 2010-10-27 |
| CN101872853B true CN101872853B (en) | 2013-03-20 |
Family
ID=42997605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101570339A Active CN101872853B (en) | 2010-04-21 | 2010-04-21 | Polymer lithium ion secondary battery and isolating membrane thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101872853B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780025A (en) * | 2011-05-13 | 2012-11-14 | 迪吉亚节能科技股份有限公司 | Lithium ion battery |
| CN102810655A (en) * | 2011-05-30 | 2012-12-05 | 东莞新能源科技有限公司 | Lithium ion battery composite isolation membranes |
| CN102709586B (en) * | 2012-01-12 | 2016-11-09 | 宁德新能源科技有限公司 | A kind of lithium titanate battery |
| CN102694203B (en) * | 2012-05-29 | 2014-11-05 | 深圳华粤宝电池有限公司 | Preparation method of gel polymer electrolyte |
| KR102041586B1 (en) | 2013-06-14 | 2019-11-06 | 삼성에스디아이 주식회사 | Rechargeable lithium battery |
| CN104143615B (en) * | 2013-08-26 | 2016-08-03 | 河南师范大学 | A kind of lithium ion battery composite separation membrane and preparation method thereof |
| KR20150106810A (en) | 2013-11-21 | 2015-09-22 | 삼성에스디아이 주식회사 | Separators and secondary battery using the separator |
| TWI580098B (en) | 2013-12-10 | 2017-04-21 | 財團法人工業技術研究院 | Organic-inorganic composite layer for lithium battery and electrode module |
| CN103779603A (en) * | 2013-12-25 | 2014-05-07 | 山东恒宇新能源有限公司 | Preparation method of composite electrolyte film |
| CN103904276B (en) * | 2014-03-28 | 2017-09-19 | 东莞新能源科技有限公司 | Composite porous isolating membrane and electrochemical appliance |
| CN105206778B (en) * | 2014-06-12 | 2018-04-06 | 宁德时代新能源科技股份有限公司 | Lithium ion secondary battery, isolating membrane and preparation method thereof |
| CN105552285B (en) * | 2015-12-30 | 2018-04-27 | 李华 | A kind of ceramic-coated separator and preparation method thereof and the application in lithium ion battery |
| CN106207058B (en) * | 2016-08-12 | 2018-11-02 | 东莞新能源科技有限公司 | A kind of diaphragm for non-water system secondary battery |
| US20180070633A1 (en) * | 2016-09-09 | 2018-03-15 | Rai Strategic Holdings, Inc. | Power source for an aerosol delivery device |
| CN109422890A (en) * | 2017-08-25 | 2019-03-05 | 北京师范大学 | A kind of composite polypropylene microporous barrier and its preparation method and application |
| CN110504410B (en) * | 2018-05-18 | 2021-04-02 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and pole piece thereof |
| CN110014711A (en) * | 2019-04-22 | 2019-07-16 | 深圳中兴新材技术股份有限公司 | A kind of MIcroporous polyolefin film and its preparation method and application that adhesive property improves |
| CN110635088B (en) * | 2019-09-26 | 2022-06-24 | 广东工业大学 | Ion battery diaphragm and preparation method thereof |
| CN111925547B (en) * | 2020-10-16 | 2020-12-29 | 河南功能高分子膜材料创新中心有限公司 | Polyethylene film with fluorine-containing polymer composite coating and preparation method thereof |
| CN112909426B (en) * | 2021-01-21 | 2022-11-01 | 河北金力新能源科技股份有限公司 | Lithium battery modified coating diaphragm and preparation method thereof |
| CN113433467B (en) * | 2021-05-11 | 2023-01-20 | 天津力神电池股份有限公司 | Lithium ion battery cycle accelerated evaluation method |
| CN114361714A (en) * | 2021-12-06 | 2022-04-15 | 惠州市旭然新能源有限公司 | Coating slurry, preparation method thereof, composite porous diaphragm prepared from coating slurry and lithium ion battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426126A (en) * | 2003-01-23 | 2003-06-25 | 天津大学 | Polymer lithium ion cell and its preparing method |
| CN1547270A (en) * | 2003-12-03 | 2004-11-17 | ���Ŵ�ѧ | Composite lithium battery membrane and method for making same |
| CN1632968A (en) * | 2005-01-27 | 2005-06-29 | 河南环宇集团有限公司 | Polymer membrane for polymer lithium ion battery and method for making same |
| CN1720309A (en) * | 2002-12-06 | 2006-01-11 | 舒飞士特种化工有限公司 | Polymer compositions |
| CN1851957A (en) * | 2006-04-26 | 2006-10-25 | 北京大学 | Polymer composite diaphragm and its preparing method |
| CN101542777A (en) * | 2007-02-05 | 2009-09-23 | Lg化学株式会社 | Organic/inorganic composite separator having porous active coating layer and electrochemical device containing the same |
| CN101656306A (en) * | 2008-08-22 | 2010-02-24 | 比亚迪股份有限公司 | Composite membrane and preparation method thereof and battery comprising composite membrane |
-
2010
- 2010-04-21 CN CN2010101570339A patent/CN101872853B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1720309A (en) * | 2002-12-06 | 2006-01-11 | 舒飞士特种化工有限公司 | Polymer compositions |
| CN1426126A (en) * | 2003-01-23 | 2003-06-25 | 天津大学 | Polymer lithium ion cell and its preparing method |
| CN1547270A (en) * | 2003-12-03 | 2004-11-17 | ���Ŵ�ѧ | Composite lithium battery membrane and method for making same |
| CN1632968A (en) * | 2005-01-27 | 2005-06-29 | 河南环宇集团有限公司 | Polymer membrane for polymer lithium ion battery and method for making same |
| CN1851957A (en) * | 2006-04-26 | 2006-10-25 | 北京大学 | Polymer composite diaphragm and its preparing method |
| CN101542777A (en) * | 2007-02-05 | 2009-09-23 | Lg化学株式会社 | Organic/inorganic composite separator having porous active coating layer and electrochemical device containing the same |
| CN101656306A (en) * | 2008-08-22 | 2010-02-24 | 比亚迪股份有限公司 | Composite membrane and preparation method thereof and battery comprising composite membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101872853A (en) | 2010-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101872853B (en) | Polymer lithium ion secondary battery and isolating membrane thereof | |
| CN102522590B (en) | Non-aqueous organic electrolyte, lithium ion secondary battery containing non-aqueous organic electrolyte, preparation method of lithium ion secondary battery and terminal communication equipment | |
| CN103779607B (en) | A kind of electrolyte and lithium rechargeable battery | |
| CN105826603A (en) | Vinylene carbonate-based lithium ion battery polymer electrolyte and preparation method as well as application thereof | |
| CN101841013B (en) | Polymer isolating membrane and lithium ion battery applying same | |
| CN107482253A (en) | A kind of low-temperature lithium ion battery | |
| CN109888384B (en) | Electrolyte and battery containing the same | |
| CN103515651B (en) | A kind of lithium ion battery high-voltage carbonate group electrolyte and preparation method and application | |
| WO2022133926A1 (en) | Lithium-ion secondary battery and preparation method therefor, battery module, battery pack, and device | |
| CN107417569A (en) | A kind of nonaqueous electrolytic solution three-level nitrile compound, the nonaqueous electrolytic solution and secondary cell for including it | |
| CN105895958A (en) | Electrolyte and lithium ion battery | |
| CN112805864B (en) | Electrolyte, electrochemical device, and electronic device | |
| CN103259046A (en) | Preparation method of high-rate lithium iron phosphate lithium battery capable of being rapidly charged | |
| CN112467209A (en) | High-voltage lithium ion battery with high and low temperature performance | |
| CN109830749B (en) | Electrolyte and electrochemical device | |
| CN106997959A (en) | Additive, nonaqueous electrolytic solution and lithium ion battery | |
| CN101662046A (en) | Lithium ion battery | |
| WO2023098268A1 (en) | Electrolyte, electrochemical device comprising same, and electronic device | |
| KR20230035681A (en) | Electrochemical and Electronic Devices | |
| CN100585937C (en) | Electrolyte and its battery | |
| CN103682439B (en) | High voltage non-aqueous electrolyte and high voltage nonaqueous electrolyte secondary battery | |
| CN106207049B (en) | A kind of ceramic diaphragm and the application in lithium ion battery | |
| KR20210072788A (en) | Electrolyte and electrochemical device | |
| CN106848292A (en) | A kind of capacitor type lithium ion battery | |
| CN107492660A (en) | Anode sizing agent, positive plate and lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |