CN101420019A - Coating method for jelly polymer battery separator - Google Patents
Coating method for jelly polymer battery separator Download PDFInfo
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- CN101420019A CN101420019A CNA2008102174820A CN200810217482A CN101420019A CN 101420019 A CN101420019 A CN 101420019A CN A2008102174820 A CNA2008102174820 A CN A2008102174820A CN 200810217482 A CN200810217482 A CN 200810217482A CN 101420019 A CN101420019 A CN 101420019A
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Abstract
The invention discloses a method for coating a gel polymer battery diaphragm. One or more of coating technologies of intaglio coating, reverse roll coating, slope flow coating and extruding coating are adopted to evenly spread a solution transferred to a coater on a support body. Then the coating is solidified to finally obtain a finished diaphragm. The consistency of coating is improved and the thickness of the coating is convenient to control. With the invention, a polymer is coated on the support body with different precision coating technologies to form ultra-thin coating. Compared with the traditional dipping method, the invention has obvious advantages in the coating consistency and the control of coating thickness. The application for preparing gel polymer battery diaphragm provides an approach for the battery diaphragm to develop towards functionalization and precision. The diaphragm is applied for gel polymer battery and has the advantages of good cycle performance, acceptable security and good gelling effect.
Description
Technical field
The present invention relates to a kind of jelly glue polymer battery, relevant with the technological process for coating of barrier film.
Background technology
Along with the application of portable electronic equipment, lithium ion battery is because of characteristics such as its high-energy-density, high securities, and its application becomes more and more widely.And as electronic equipment, little, in light weight at thin thickness, area, particularly high-energy, do not have the target that aspects such as leakages, long-life just become people's pursuit always.Compare with the liquid flexible packing battery, jelly glue polymer battery is emerging priority research areas in recent years.Gel electrolyte can be realized the electrolyte gelation, at aspects such as fail safe and anti-leakages huge advantage is arranged.Particularly it has higher thermal endurance and stability, can make the pole piece of electric in-core still can keep the stable of structure under the high temperature motion state.This specific character effectively solves the problem of the power source electric performance stablity of lithium ion battery in use in hybrid vehicle (HEV), electric motor car (EV) field.Gel electrolyte provides a technical solution for the 21 century energy development.
When jelly glue polymer battery used, no leakage can be made into device highly reliably, and in light weight, miniaturization, and performance is good.In order to prepare above-mentioned gel lithium ion battery, various polymer and barrier film manufacture craft have all been studied by a lot of producers, but various researchs all are in order to make battery gel effective.Successfully make jelly polymer battery separator, key is to select suitable coating process and polymer.Traditional dip coating coating process, though simple to operate, be coated with low precision, coating thickness can't accurately be controlled, and can't further satisfy the functionalization of jelly polymer battery separator coating, the requirement that becomes more meticulous, and, polymer uses homogenous material, also can't reach better gel effect.
Goal of the invention
Main purpose of the present invention is to provide a kind of coating process of jelly polymer battery separator, to improve the consistency of coating, the thickness of convenient control coating.
Another object of the present invention is to provide a kind of coating process of jelly polymer battery separator, make barrier film easier pore-forming in pore-creating, guaranteed the unobstructed of the conducting path of lithium ion in barrier film.
To achieve these goals, solution of the present invention is:
The coating process of jelly polymer battery separator, adopt one or more coating techniques in intaglio plate coating, reverse roll coating, sloping flow coat cloth or the extrusion coated, be coated on the solution that is transported to spreader on the supporter, then equably, solidified coating gets the final finished barrier film.
The solute of solution is a composite polymer in the described spreader, composite polymer is formed by the mixed of polymer 1 and polymer 2 by weight 1:5～5:1, polymer 1 is the derivative of both positive and negative polarity binding agent, and polymer 2 is for having the polymer of strong polar group.
Described composite polymer is formed by the mixed of polymer 1 and polymer 2 by weight 2:1.
Described polymer 1 is a kind of in polytetrafluoroethylene or its copolymer, polyvinylidene fluoride and copolymer thereof, polymethyl methacrylate, polyethylene glycol oxide, polyvinyl chloride, the polyacrylonitrile, a kind of in poly-hexafluoro propylene or the tetrafluoroethylene of polymer monomers.
A kind of in the polymethyl methacrylate that described polymer 2 is the modification of maleic anhydride class, the polyvinylidene fluoride (PVDF) of maleic anhydride class modification, the ternary vinyl chloride-vinyl acetate resin.
The solvent of solution is n-methlpyrrolidone (NMP), N in the described spreader, dinethylformamide (DMF), dimethylacetylamide (DMAC), oxolane (THF), ketone etc.
Described supporter is polyethylene/polypropylene (PE/PP) film or non-woven membrane.
Described solidified coating is that heat (as by infrared ray or hot blast) is put on coating layer, evaporating solvent.
Described solidified coating is to use ultraviolet ray or electron beam with coating curing.
The present invention by adopt different accurate coating processes with polymer-coated on supporter, the formation microthin coating.These coating processes all have very remarkable advantages than traditional dip coating aspect the THICKNESS CONTROL of the consistency that is coated with, coating.Be applied to prepare jelly polymer battery separator, for battery diaphragm develops the approach that provides to functionalization, the direction that becomes more meticulous.The coating metacneme is used jelly glue polymer battery, good cycle, and fail safe is qualified, and gel effect is good.
In addition, the present invention is coated with composite polymer on supporter, and a kind of in this polynary composite polymeric objects system is the derivative of both positive and negative polarity binding agent, is called polymer 1, plays the skeleton supporting role in gel network; Another is the polymer with strong polar group, is called polymer 2, in gel network and electrolyte solution has fine compatibility, has the ability of strong gelation, strong cementitiousness.And, utilizing polymer with particular functional group by adjusting the composite polymer prescription, easier pore-forming in pore-creating has guaranteed the unobstructed of the conducting path of lithium ion in barrier film.
Description of drawings
Fig. 1 is the normal temperature state, and weight is schemed over time after each gelinite imbibition of filling a prescription;
Fig. 2 is 45 degree states, and weight is schemed over time after each gelinite imbibition of filling a prescription;
Fig. 3 is common commercial barrier film ESEM (SEM) figure;
Fig. 4 is jelly polymer battery separator ESEM (SEM) figure;
Fig. 5 is jelly glue polymer battery 523450P cycle performance resolution chart (series 1 and two tested batteries of series 2 expressions);
Fig. 6 is a dip-coating mode schematic diagram;
Fig. 7 is the plate gravure coating method schematic diagram;
Fig. 8 is that intaglio plate is coated with the roll structure schematic diagram;
Fig. 9 reverses the roll coating model schematic diagram;
Figure 10 is sloping flow coat mode for cloth schematic diagram;
Figure 11 is an extrusion coated mode schematic diagram.
Embodiment
The concrete coating process of jelly polymer battery separator of the present invention is: adopt the intaglio plate coating, the reverse roll coating, one or more coating techniques in slope flow coat cloth or the extrusion coated, referring to Fig. 7, Fig. 9, Figure 10, Figure 11, be coated on the solution that is transported to spreader on the supporter equably, wherein, the solute of solution is a composite polymer, composite polymer is formed by the mixed of polymer 1 and polymer 2 by weight 1:5～5:1 (2:1 is preferable), polymer 1 is the derivative of both positive and negative polarity binding agent, as polytetrafluoroethylene or its copolymer, polyvinylidene fluoride and copolymer thereof, polymethyl methacrylate, polyethylene glycol oxide, polyvinyl chloride, a kind of in the polyacrylonitrile, polymer 2 is for having the polymer of strong polar group, polymethyl methacrylate as the anhydrides modification, the polyvinylidene fluoride of anhydrides modification (PVDF), a kind of in the ternary vinyl chloride-vinyl acetate resin, solvent is n-methlpyrrolidone (NMP), N, dinethylformamide (DMF), dimethylacetylamide (DMAC), oxolane (THF), ketones etc., supporter are polyethylene/polypropylene (PE/PP) film or non-woven membrane.Then, heat is put on coating layer, evaporating solvent, or with ultraviolet ray or electron beam with coating curing, the final finished barrier film.
Gel stability characterized when 1, the solution of spreader adopted different formulations:
(1) characterizing method: polymer 1, polymer 2; Polymer 1: polymer 2 different proportionings are dissolved in the electrolyte solution at a certain temperature, keep 10-30min 50-110 ℃ of heating, and gelatin phenomenon is observed in cooling again;
This shows that composition polymer is used gel effect and is better than single polymers, gel rubber system is more stable, and especially proportioning is the composition polymer of 2:1.
(2) gelling performance contrast:
2, different proportionings are made gelinite imbibition ability sign:
In temperature is 18-26 ℃, below the relative humidity 15RH%, does the experiment of gel imbibition ability.
Dispose the solution of different proportionings, make gelinite, get 1g.Each gelinite is dried in vacuum drying oven.
Investigate the ability of gelinite in normal temperature and 45 ℃ of following imbibitions:
At first get 3 beakers, and numbering.Add electrolyte, then gelinite is put into beaker, pick up counting; Before 2h (hour) every 1h takes out and gently wipes away colloid surface liquid behind every 0.5h, the 2h, weighs record colloid weight with assay balance.After n hour, the colloid weight of adsorbing behind the electrolyte in n+1/n+2 hour no longer increases.Again 3-5h data of surveying more.
Experimental data drafting pattern 1, Fig. 2, M represents polymer 1 among the figure, P represents polymer 2.
Conclusion:
The normal temperature state has been inhaled full at the 0.5h inner gel substantially;
45 degree states, along with the lengthening of time, imbibition is also in slow increase;
No matter be normal temperature or 45 degree, polymer 1: the imbibition of polymer 2=2:1 is maximum.
Press the 2:1 proportioning with polytetrafluoroethyl-ne alkene copolymer and maleic anhydride modified PVDF and use preparation jelly glue polymer battery 523450P:
(1) positive plate preparation: active material adopts cobalt acid lithium (LiCoO
2), adding PVDF and conductive agent Super-p, weight ratio is LiCoO
2: PVDF:Super-p=95:2:3.PVDF is dissolved in the solvent N-methyl pyrrolidone, is stirred into settled solution.Then other components all are dispersed in the above-mentioned settled solution, form slurry, viscosimetric is 7800mpaS.Equably slurry being coated on thickness on the coating machine is on the 16 μ m aluminium foil surfaces, and oven dry back coated on both sides thickness is 154 μ m.Use the steel rider twin rollers with the positive plate pair roller again, positive plate thickness is 125 μ m behind the pair roller.On bright face is scraped powder place welding, transferred the aluminium strip of nickel strap as positive terminal, thereby made positive electrode.
(2) negative plate preparation: active material adopts MCMB, and weight ratio is MCMB:PVDF:Super-p=90:6:4.Binding agent stirred to be dissolved in the N-methyl pyrrolidone, becomes settled solution.Graphite powder and conductive agent are dispersed in the above settled solution again, form slurry, viscosimetric is 5500mpaS.Equably slurry is being coated on the coating machine on the 9 μ m copper foil surfaces, oven dry back coated on both sides thickness is 162 μ m.Use the steel rider twin rollers with the negative plate pair roller again, negative plate thickness is 126 μ m behind the pair roller.Scrape the powder place at bright face and weld nickel strap, thereby make negative electrode as negative pole end.
(3) preparation of barrier film: as Fig. 6, Fig. 7, Fig. 9, Figure 10, Figure 11, adopt dip-coating, intaglio plate coating, reverse roll coating, sloping flow coat cloth or extrusion coated mode to be coated with PE/PP film (the Gurley value is 170-190s/in2.100cc.1.22Kpa), concrete coating process is relatively seen below and is stated.Polytetrafluoroethyl-ne alkene copolymer and maleic anhydride modified PVDF are made settled solution by the proportioning dissolving of 2:1.Be coated with cloth diaphragm with dip coating, coating layer thickness is 4-6 μ m, and the coating amount is 2.5-3.5g/m
2, be preferably 3.0g/m
2, the Gurley value is 220-280s/in
2.100cc.1.22Kpa.Barrier film after the coating is cut, put into vacuum drying oven then and dry, vacuum is preserved and is placed.
(4) battery assembling: will roll up core behind the pole piece coiling and pack in the aluminum plastic film closedtop, side seal under certain pressure, temperature, time into.
(5) battery liquid-filling: inject electrolyte, activation, heat is colded pressing under certain pressure, temperature and time.Pressure is at 5.5-21.5Kgf/cm
2, be preferably in 10Kgf/cm
2, temperature is preferably in 85-100 ℃ at 60-100 ℃.
Make the jelly polymer battery separator of finished product battery and common commercial barrier film pattern to such as Fig. 3, Fig. 4.
2, jelly glue polymer battery 523450P performance:
(1) cycle performance:
Carry out 0.5C normal temperature circulation 500 times by following condition: earlier battery is pressed the 450mA constant current charge, when voltage reaches 4.2V, become the 4.2V constant voltage charge, smaller or equal to 9mA, shelve 5min up to current value.Then with the 450mA constant-current discharge, discharge voltage is to 3.0V.So circulation is 500 times.Capacity is 915mAh first, and the battery capacity conservation rate is 87% after the 0.5C normal temperature circulation 500 times., test data is seen Fig. 5.As seen, after the 0.5C normal temperature circulation 500 times, the battery capacity conservation rate is 87% from the test data of Fig. 5, and jelly glue polymer battery has shown good cycle life.
(2) security performance: security test is all qualified.
(3) gelling performance:
Dissect jelly glue polymer battery: battery roll core hardness is big, and the inner walls raffinate is few, and the positive electrode active materials overwhelming majority is bonded on the barrier film, peels off with plus plate current-collecting body.Negative pole and barrier film have obvious intensity.
Conventional membrane coating method and the concrete coating method of barrier film of the present invention compare:
1, dip-coating mode:
(1) dip-coating is a kind of more ancient and commonly used coating process, sees Fig. 6.Naturally the liquid that adheres to has determined the coating amount, but also can excess liquid be removed with scraper plate, scraper or scraper.The coating amount is by strength of fluid (viscosity), density (add different materials), coating speed, coating method (scrape or do not scrape) decision.And the barrier film Gurley value after the coating is by barrier film kind, solution concentration, coating method, coating speed and coating temperature decision.
(2) dip-coating result of experiment:
| Numbering | The barrier film kind | Thickness (μ m) | Surface density mean value (g/m 1) | Coating amount mean value (g/m 2) | Extreme difference | δ | Gurley value |
| 1 | Commercial barrier film | 16-17 | 8.881 | / | / | 0.0986 | 176.9-192.3 |
| 2 | The dip-coating metacneme | 20-23 | 12.215 | 3.334 | 0.752 | 0.6478 | 220-280 |
The diaphragm application battery of coating is investigated its cycle performance of battery, fail safe and gel effect.The front is used battery performance to dip-coating coating metacneme and has been done detailed introduction, and it is good to use battery performance.In addition, after the 1C normal temperature circulation 300 times, the battery capacity conservation rate is more than 80%.But the coating low precision, the coating kind is single.
2, plate gravure coating method:
(1) beginning most is the technology of printing industry, sees Fig. 7, Fig. 8.This technology is used for low viscosity fluid thin layer high-speed coating.Be used for the coating of adhesive, adhesive tape and other coated products.Intaglio plate coating most important characteristics is that the surface of applicator roll is the coating surface that mechanical engraving becomes to intermesh.By little cell with solution coat on matrix.
The main strong point of intaglio plate coating is that the volume and the uniformity by means of grid realizes having the thin layer of the certain thickness and the uniformity to be coated with when high speed.The figure of gravure roll as shown in Figure 8.
(2) experimental result:
| Numbering | The barrier film kind | Thickness (μ m) | Surface density mean value (g/m 1) | Coating amount mean value (g/m 2) | Extreme difference | δ | Gurley value |
| 1 | Commercial barrier film | 16-17 | 8.799 | / | / | 0.1034 | 180.2-202.3 |
| 2 | The coating metacneme | 18-19 | 11.804 | 3.005 | 0.357 | 0.3167 | 356-488 |
To be coated with metacneme and be cut into little barrier film, using polymer 523450P battery.
Make positive plate and negative plate and see said method for details.
Make battery and see said method for details.
Investigate cycle performance of battery, security performance and gel effect.
The battery testing condition is pressed 1C normal temperature circulation 300 times: earlier battery is pressed the 900mA constant current charge, when voltage reaches 4.2V, become the 4.2V constant voltage charge, smaller or equal to 9mA, shelve 5min up to current value.Then with the 900mA constant-current discharge, discharge voltage is to 3.0V.So circulation is 300 times.Capacity is 920mAh first, and the battery capacity conservation rate is 90-93% after the 1C normal temperature circulation 300 times.Cycle performance is good.
Safety test is all qualified.
Dissect battery: battery is very hard, and raffinate is few, and plus plate current-collecting body is divided into two-layer, and one deck is bonded on the barrier film uniformly, and another layer is retained on the aluminium foil uniformly, between negative pole and barrier film certain intensity is arranged.Slightly different with the bonding situation of diaphragm application anode of dip-coating coating, but gel effect is obvious.
3, reverse roll coating:
(1) rolling method is the coating process that forms fluid film with one or more rollers on the matrix of operation continuously, and a lot of coatings can be classified as roller coat.The reverse roll coating is a kind of of roller coat, sees Fig. 9, and reverse roll coating applied range is more common coating technique.
Reverse roll is with accurate applicator roll and precision bearing, and coating is almost all good than other any methods.Key operation is the reverse roll meter flow in applicator roll and doctor roll gap.This flows and has determined coating amount and capability and performance.
(2) experimental result:
| Numbering | The barrier film kind | Thickness (μ m) | Surface density mean value (g/m 1) | Coating amount mean value (g/m 2) | Extreme difference | δ | Gurley value |
| 1 | Commercial barrier film | 16-17 | 8.800 | / | / | 0.1201 | 179.5-210 |
| 2 | The coating metacneme | 18-19 | 11.796 | 2.996 | 0.220 | 0.3065 | 582.6-603.4 |
To be coated with metacneme and be cut into little barrier film respectively, using polymer 523450P battery.
Make positive plate and negative plate and see said method for details.
Make battery and see said method for details.
Investigate cycle performance of battery, security performance and gel effect.
The battery testing condition is pressed 1C normal temperature circulation 300 times: earlier battery is pressed the 900mA constant current charge, when voltage reaches 4.2V, become the 4.2V constant voltage charge, smaller or equal to 9mA, shelve 5min up to current value.Then with the 900mA constant-current discharge, discharge voltage is to 3.0V.So circulation is 300 times.
The coating metacneme is used: capacity is 925mAh first, and the battery capacity conservation rate is 85% after the 1C normal temperature circulation 300 times.
Cycle performance is better.
Safety test is all qualified.
Dissect battery: battery is hard, and raffinate is few, and the plus plate current-collecting body major part is bonded on the barrier film, between negative pole and barrier film certain intensity is arranged.Gel effect is obvious.
4, sloping flow coat cloth:
(1) sloping stream is coated in the thin layer coating good coating effect, sees Figure 10, and requires the viscosity of solution also relatively low.The balance of the rheological property of each layer fluid plays a very important role in the sloping flow coat cloth of success.The flow of input hopper, the speed of coating, the width of coating determine its coating amount.Good cavity body structure design and use precision metering pump can obtain the amount of being coated with and fabulous coating quality accurately.
(2) experimental result:
| Numbering | The barrier film kind | Thickness (μ m) | Surface density mean value (g/m 1) | Coating amount mean value (g/m 2) | Extreme difference | δ | Gurley value |
| 1 | Commercial barrier film | 16-17 | 8.823 | / | / | 0.0944 | 180-196.4 |
| 2 | The coating metacneme | 18-19 | 11.938 | 3.115 | 0.402 | 0.2810 | 450-533.5 |
To be coated with metacneme and be cut into little barrier film respectively, using polymer 523450P battery.
Make positive plate and negative plate and see said method for details.
Make battery and see said method for details.
Investigate cycle performance of battery, security performance and gel effect.
The battery testing condition is pressed 1C normal temperature circulation 300 times: earlier battery is pressed the 900mA constant current charge, when voltage reaches 4.2V, become the 4.2V constant voltage charge, smaller or equal to 9mA, shelve 5min up to current value.Then with the 900mA constant-current discharge, discharge voltage is to 3.0V.So circulation is 300 times.
The coating metacneme is used: capacity is 915mAh first, and the battery capacity conservation rate is 88% after the 1C normal temperature circulation 300 times.
Cycle performance is better.
Safety test is all qualified.
Dissect battery: battery is hard, and raffinate is few, and the plus plate current-collecting body major part is bonded on the barrier film, between negative pole and barrier film certain intensity is arranged.Gel effect is obvious.
5, extrusion coated:
(1) the scheduled volume spreader is to resemble extruding (bar seam), sloping flow coat cloth etc. will import the solution of dispense tip and all be coated on machine on the matrix.In other various spreaders, as dip-coating, roller coat, the solution amount that is coated on matrix is subjected to the factor affecting such as speed of fluid properties (mainly being viscosity) and coating.
Extrusion coated is seen Figure 11, and the solution that infeeds is too many, is not coated on the matrix fully, flows down from spraying nozzle but cover sloping stream interface; If the solution that infeeds is very little, coating slivering road or speckle on matrix.Therefore, the flow of control solution is the key of control coating precision.
(2) experimental result:
| Numbering | The barrier film kind | Thickness (μ m) | Surface density mean value (g/m 1) | Coating amount mean value (g/m 2) | Extreme difference | δ | Gurley value |
| 1 | Commercial barrier film | 16-17 | 8.855 | / | / | 0.1118 | 185.2-214.6 |
| 2 | The coating metacneme | 17-18 | 12.331 | 3.476 | 0.305 | 0.3792 | 400.3-518.8 |
To be coated with metacneme and be cut into little barrier film respectively, using polymer 523450P battery.
Make positive plate and negative plate and see said method for details.
Make battery and see said method for details.
Investigate cycle performance of battery, security performance and gel effect.
The battery testing condition is pressed 1C normal temperature circulation 300 times: earlier battery is pressed the 900mA constant current charge, when voltage reaches 4.2V, become the 4.2V constant voltage charge, smaller or equal to 9mA, shelve 5min up to current value.Then with the 900mA constant-current discharge, discharge voltage is to 3.0V.So circulation is 300 times.
The coating metacneme is used: capacity is 920mAh first, and the battery capacity conservation rate is 84% after the 1C normal temperature circulation 300 times.
Cycle performance is better.
Safety test is all qualified.
Dissect battery: battery is hard, and raffinate is few, and the plus plate current-collecting body major part is bonded on the barrier film, between negative pole and barrier film certain intensity is arranged.Gel effect is obvious.
To sum up, four kinds of coating techniques of the present invention's experiment: it is good that the coating metacneme is used battery performance, all has more obvious advantage than traditional dip coating aspect the THICKNESS CONTROL of the consistency that is coated with, coating.Gel effect is obvious.
Claims (9)
1, the coating process of jelly polymer battery separator, it is characterized in that: adopt one or more coating techniques in intaglio plate coating, reverse roll coating, sloping flow coat cloth or the extrusion coated, be coated on the solution that is transported to spreader on the supporter equably, then, solidified coating gets the final finished barrier film.
2, the coating process of jelly polymer battery separator according to claim 1, it is characterized in that: the solute of solution is a composite polymer in the described spreader, composite polymer is formed by the mixed of polymer 1 and polymer 2 by weight 1:5～5:1, polymer 1 is the derivative of both positive and negative polarity binding agent, and polymer 2 is for having the polymer of strong polar group.
3, as the coating process of jelly polymer battery separator as described in the claim 2, it is characterized in that: described composite polymer is formed by polymer 1 and polymer 2 mixed by weight 2:1.
4, as the coating process of jelly polymer battery separator as described in the claim 2, it is characterized in that: a kind of in polytetrafluoroethylene or its copolymer, polyvinylidene fluoride and copolymer thereof, polymethyl methacrylate, polyethylene glycol oxide, polyvinyl chloride, the polyacrylonitrile of described polymer 1, a kind of in poly-hexafluoro propylene or the tetrafluoroethylene of polymer monomers.
5, as the coating process of jelly polymer battery separator as described in the claim 2, it is characterized in that: a kind of in the polyvinylidene fluoride of the polymethyl methacrylate of maleic anhydride class modification, the modification of maleic anhydride class or the ternary vinyl chloride-vinyl acetate resin of described polymer 2.
6, the coating process of jelly polymer battery separator according to claim 1, it is characterized in that: the solvent of solution is n-methlpyrrolidone, N in the described spreader, dinethylformamide, dimethylacetylamide, oxolane or ketone.
7, the coating process of jelly polymer battery separator according to claim 1, it is characterized in that: described supporter is polyethylene/polypropylene film or non-woven membrane.
8, the coating process of jelly polymer battery separator according to claim 1, it is characterized in that: described solidified coating is that heat is put on coating layer, evaporating solvent.
9, the coating process of jelly polymer battery separator according to claim 1 is characterized in that: described solidified coating is with coating curing with ultraviolet ray, electron beam.
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