CN101304081A - Electric energy element, isolated layer and method for manufacturing the same - Google Patents
Electric energy element, isolated layer and method for manufacturing the same Download PDFInfo
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- CN101304081A CN101304081A CNA2007101017546A CN200710101754A CN101304081A CN 101304081 A CN101304081 A CN 101304081A CN A2007101017546 A CNA2007101017546 A CN A2007101017546A CN 200710101754 A CN200710101754 A CN 200710101754A CN 101304081 A CN101304081 A CN 101304081A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to an electrical energy component, an insulation layer and a manufacturing method. The insulation layer comprises an insulation body and a first insulation membrane. A first material and a second material are mixed and solidified and then undergo an alkali etching process to remove the first material so as to form the insulation body; a plurality of ant holes are opened on the position of the insulation body where the first material is removed. The first insulation membrane is arranged on one side of the insulation body. The invention can allow the insulation body of the insulation layer to bear higher temperature through the physical properties of the chosen materials, and an ant hole structure is naturally formed on the insulation body through the alkali etching process, thus no additionally mechanical process is needed to arrange micro holes on the insulation body; at the same time, the insulation layer manufacturing method of the invention can produce more uniform micro-holes compared with non-solvent processes, and can form larger surface area to facilitate the first insulation membrane to be adhered to the insulation body, thereby increasing the manufacturing efficiency; meanwhile, the electrical energy component of the insulation layer can be utilized to obtain higher thermal stability and safety.
Description
Technical field
The present invention relates to a kind of electric energy element, separator and manufacture method thereof, particularly relate to a kind of this physical efficiency of isolation of separator that makes and bear higher temperature, and make through the alkali lye etch process and to isolate on the body formation ant pore structure naturally, and form more high surface area and adhere in order to first barrier film and isolate on the body, can increase manufacturing efficient, utilize the electric energy element of separator can obtain the manufacture method (ELECTRICITY ELEMENT, ISOLATIONLAYER AND MANUFACTURING METHOD THEREOF) of electric energy element and the separator and the separator of high thermal stability and fail safe simultaneously.
Background technology
Because 3C Products such as current electronics, information and communication all develop towards the direction of wireless penetration, portabilityization, the every high-performance components that is applied to various products is except striding forward toward light, thin, short, little target, in recent years, the technical development of bendable electronic product also comes into one's own gradually, therefore, for suitable urgent of the demand of the battery that volume is little, in light weight, energy density is high.
At first, operating characteristic with battery system is an example, in order to prolong the time that battery uses, promote the energy density of battery, in the past can't be reusable the primary cell system can't satisfy the demand of electronic product now, and be applied at present that battery system in the electronic product is many to be filled can repeating, the secondary battery system of discharge is a main flow, for example: lithium battery system, fuel cell system, solar cell system ... or the like, yet, because under technical development now, fuel cell still faces the restriction that minimum dimension is arranged, solar cell system then is based on the restriction of material and can't obtains comparatively perfect energy sources conversion efficiency, therefore, in above-mentioned secondary battery system, can reach small size, the claimer of high-energy-density is the comparatively ripe lithium battery system of technology.
And the battery structure of lithium battery is by the extremely comparatively common now takeup type structure of the stacked structures evolution in past, yet, no matter be the stacked structures or the battery of takeup type structure, primary structure is to establish a separator by folder between an anode plate and the negative plates to be constituted.See also shown in Figure 1ly, be a kind of structural representation of existing known electric energy element.Existing known battery 1 comprises a separator 11, one first current collection layer 12, one second current collection layer 13, one first active material layer 14, one second active material layer 15 and an encapsulation unit 16.Wherein, separator 11 has isolation body 110, one first barrier film 111 and one second barrier film 112.And separator 11 mainly be used for avoiding first electrode base board (comprising first current collection layer 12 and first active material layer 14) and second electrode base board (comprising second current collection layer 13 and second active material layer 15) to take place directly contact and in battery 1 problem of generation internal short-circuit, but but must be able to provide the migration of battery 1 intermediate ion required path simultaneously, therefore, the material of the isolation body 110 of this separator 11 must be to have taken into account non-conductive and porous feature.Existing known common isolation body 110 is to utilize polymeric materials such as polyethylene, polypropylene to make the flat board in a pore-free hole earlier, then utilizes a processing procedure that the identical micropore hole of a plurality of sizes is set on flat board again.
But and according to different polymer or the gamma transition of same polymer different molecular weight and softening temperature more can change local polymer in certain temperature range structure, so, when battery system causes its temperature inside to rise because of internal short-circuit, external short circuit or any factor, the structural change of the isolation body 110 by separator 11 and the path of closing battery 1 intermediate ion migration, to avoid battery 1 at high temperature to proceed electrochemical reaction, can reduce the probability that battery 1 is blasted.
Yet, if the intensification that this battery 1 still continues for some reason, in case the internal temperature of battery 1 reaches 150 ℃～180 ℃, physical characteristic based on the isolation body 110 of separator in the prior art 11, its separator 11 still can globality melt collapse, cause comprehensive short circuit also, and then may produce serious on fire or blast.
This shows that above-mentioned existing electric energy element, separator and manufacture method thereof obviously still have inconvenience and defective, and demand urgently further being improved in product structure, manufacture method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but does not see always that for a long time being suitable for design is finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to provide a kind of can resistant to elevated temperatures separator, found a kind of new electric energy element, separator and manufacture method thereof, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing electric energy element, separator and manufacture method thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of new electric energy element, separator and manufacture method thereof, can improve general existing electric energy element, separator and manufacture method thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing electric energy element, separator and manufacture method thereof exist, and provide a kind of can resistant to elevated temperatures separator and manufacture method thereof, and the electric energy element that utilizes separator of the present invention is very suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of separator manufacture method that the present invention proposes, be to be used to make a separator, this manufacture method comprises the following step: mix one first material and one second material; Solidify this first material and this second material; Utilize the alkali lye etching mode to remove this first material and isolate body to form one, wherein this isolation body is to form at this first material place that is removed to be provided with a plurality of ants hole; And form the side of one first barrier film in this isolation body.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid separator manufacture method, the step of this first material of wherein said curing and this second material more comprises: remove at least one solvent in this first material and this second material; And this first material of high temperature cyclisation and this second material.
Aforesaid separator manufacture method, it more comprises with next step: form one second barrier film in the opposite side of this isolation body, wherein this isolation body is to be located between this first barrier film and this second barrier film.
Aforesaid separator manufacture method, the material of wherein said first barrier film and this second barrier film are to be a mixture, and this mixture comprises a ceramic material and a high molecular polymer at least.
Aforesaid separator manufacture method, wherein said high molecular polymer are to be the copolymer of pi, vinylidene or vinylidene and derivative or mixture.
Aforesaid separator manufacture method, wherein said first material is attacked by an alkali lye than this second material is easier.
Aforesaid separator manufacture method, wherein said first material and this second material are to be a chemical polymerization thing, and the quantity of the close base of this first material is the quantity greater than the close base of this second material, this chemical polymerization thing is the forerunner's polymer for pi, and this forerunner's polymer is to be polyamic acid and other derivatives of the same type.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of separator according to the present invention's proposition, it comprises: one isolates body, be to solidify via one first material and one second material mixing, and form to remove this first material through an alkali lye etch process, wherein this isolation body is to form at this first material place that is removed to be provided with a plurality of ants hole; And one first barrier film, be arranged at a side of this isolation body.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid separator, after wherein said first material and this second material mixing, at least one solvent in process this first material of removal and this second material and high temperature cyclisation are to form this first material and this second material that solidifies, the material of this first barrier film and this second barrier film is to be a mixture, and this mixture comprises a ceramic material and a high molecular polymer at least.
Aforesaid separator, it more comprises: one second barrier film, it is the opposite side that is arranged at this isolation body, wherein this isolation body is to be located between this first barrier film and this second barrier film, the material of this first barrier film and this second barrier film is to be a mixture, and this mixture comprises a ceramic material and a high molecular polymer at least.
Aforesaid separator, wherein said first material is attacked by an alkali lye than this second material is easier.
Aforesaid separator, wherein said first material and second material are to be a chemical polymerization thing, and the quantity of the close base of this first material is the quantity greater than the close base of this second material, this chemical polymerization thing is the forerunner's polymer for pi, and this forerunner's polymer is to be polyamic acid and other derivatives of the same type.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.A kind of electric energy element according to the present invention's proposition, it comprises: a separator, it comprises: one isolates body, be to solidify via one first material and one second material mixing, and form to remove this first material through an alkali lye etch process, wherein this isolation body is to form at this first material place that is removed to be provided with a plurality of ants hole, and one first barrier film, is a side that is arranged at this isolation body; One first current collection layer is a side that is arranged at this separator; One second current collection layer is the opposite side that is arranged at this separator; One first active material layer is to be folded between this separator and this first current collection layer; One second active material layer is to be folded between this separator and this second current collection layer; And an encapsulation unit, be this separator of sealing, this first current collection layer, this second current collection layer, this first active material layer and the formed structure of this second active material layer.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid separator, wherein said electric energy element are to be a supply of electrical energy element or an electrical power storage element.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows:
In order to achieve the above object, according to a kind of separator manufacture method of the present invention, be to be used to make a separator, this manufacture method comprises the following step: at first, mix one first material and one second material.Then, solidify first material and second material.Then, utilize the alkali lye etching mode to remove first material and isolate body to form one, wherein isolating body is to form at the first material place that is removed to be provided with a plurality of ants hole.At last, form one first barrier film in a side of isolating body.
In addition, in order to achieve the above object,, comprise and isolate body and one first barrier film according to a kind of separator of the present invention.Isolating body is to solidify via one first material and one second material mixing, and forms to remove first material through an alkali lye etch process, and wherein this isolation body is to form at the first material place that is removed to be provided with a plurality of ants hole.First barrier film is to be arranged at a side of isolating body.
In addition, in order to achieve the above object,, comprise a separator, one first current collection layer, one second current collection layer, one first active material layer, one second active material layer and an encapsulation unit according to a kind of electric energy element of the present invention.Separator is to comprise one to isolate body and one first barrier film.Wherein, isolating body is to solidify via one first material and one second material mixing, and form to remove first material through an alkali lye etch process, wherein isolating body is to form at the first material place that is removed to be provided with a plurality of ants hole, first barrier film is to be arranged at a side of isolating body.First current collection layer is a side that is arranged at separator.Second current collection layer is the opposite side that is arranged at separator.First active material layer is to be folded between the separator and first current collection layer.Second active material layer is to be folded between the separator and second current collection layer.Encapsulation unit is sealing isolation layer, first current collection layer, second current collection layer, first active material layer and the formed structure of second active material layer.
By above-mentioned technical scheme, electric energy element of the present invention, separator and manufacture method thereof have following advantage and beneficial effect at least: because according to a kind of separator of the present invention, be mixing cured one first material of elder generation and one second material, remove first material and form an isolation body through the alkali lye etch process again, after this barrier film is set to finish the shaping of separator in isolation body one or both sides again.Compared with prior art, the present invention is that the physical characteristic by selected material makes the isolation body of separator can bear higher temperature, and make the structure of isolating the formation one ant hole of nature on the body via the alkali lye etch process, therefore do not need to increase in addition a more mechanical processing procedure and on the isolation body, the micropore hole is set, separator manufacture method of the present invention can produce how even and small hole than the non-solvent processing procedure simultaneously, and form bigger surface area and adhere in order to first barrier film and isolate on the body, can increase manufacturing efficient by this.Simultaneously, utilize the electric energy element of separator of the present invention, also therefore can obtain higher thermal stability and fail safe.
In sum, the invention provides a kind of can resistant to elevated temperatures separator and manufacture method thereof, and the electric energy element that utilizes separator of the present invention is very suitable for practicality.The present invention has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure, manufacture method or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing electric energy element, separator and manufacture method thereof have the outstanding effect of enhancement, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is a kind of structural representation that has known electric energy element now.
Fig. 2 is the flow chart according to the manufacture method of a kind of separator of preferred embodiment of the present invention.
Fig. 3 A to Fig. 3 C is the schematic diagram according to each fabrication steps of separator of preferred embodiment of the present invention.
Fig. 4 is the schematic diagram of another enforcement aspect of separator of the present invention.
Fig. 5 is the structural representation according to a kind of electric energy element of preferred embodiment of the present invention.
1: battery 2: electric energy element
11,21,21 ': separator 110,210: isolate body
111,211: the first barrier films 112,212: the second barrier films
12,22: the first current collection layers 13,23: the second current collection layers
14,24: the first section bar bed of materials 15 alive, 25: the second active material layers
16,26: encapsulation unit 210a: first material
210b: the second material h: ant hole
S1～S4: the process step of the manufacture method of separator of the present invention
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of electric energy element, separator and manufacture method thereof, structure, manufacture method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Hereinafter with reference to correlative type, the manufacture method according to a kind of electric energy element and the separator and the separator of preferred embodiment of the present invention is described.
See also shown in Figure 2ly, be the flow chart of the manufacture method of a kind of separator of foundation preferred embodiment of the present invention.The manufacture method of a kind of separator of preferred embodiment of the present invention comprises step S1 to step S4.Please consult simultaneously shown in Fig. 2 and Fig. 3 A, Fig. 3 A to Fig. 3 C is the schematic diagram according to each fabrication steps of separator of preferred embodiment of the present invention, step S1 is for mixing one first material 210a and one second material 210b, and step S2 is for solidifying the first material 210a and the second material 210b.The first material 210a that the present invention utilized and the second material 210b are that (polyimide, forerunner's polymer PI) for example are polyamic acid (PAA) and other derivatives of the same type for resistant to elevated temperatures pi.In addition, the first material 210a and the second material 210b, though all be to utilize polyamic acid (PAA) as material, but the close base quantity among the first material 210a is greater than the close base quantity among the second material 210b, or for example the steric hindrance of the main polymer chain of the first material 210a and side chain is less or less, and therefore material 210b is easier is attacked by alkali lye than second for the first material 210a.The first material 210a and the second material 210b are through after mixing again; usually can remove the solvent part among the first material 210a and the second material 210b earlier; pass through the high temperature cyclisation then; thereby make polyamic acid and other derivatives of the same type can form the pi of high temperature resistant (greater than 200 ℃) ex hoc genus anne type derived polymer; this is the material of isolation body of the present invention, and forms cross-sectional structure as shown in Figure 3A.
Then, please consult simultaneously shown in Fig. 2 and Fig. 3 B, step S3 isolates body 210 for utilizing the alkali lye etching mode to remove the first material 210a to form one, and wherein isolating body 210 is to form at the first material 210a place that is removed to be provided with a plurality of ants hole h structure.Even through forming pi after the high temperature cyclisation, but the alkali lye solvability of the chemical polymerization thing material of the first material 210a and the second material 210b wherein, still because of the number of the close base of its forerunner's polymer (polyamic acid) and other steric hindrances of chemical polymerization thing material main chain and side chain, and sizable difference is arranged, therefore can utilize an alkali lye etch process to come that the first material 210a is done etching and remove.After etching, the position of the first material 210a that is removed then forms the structure of a plurality of ants hole h, does not then need to increase a processing procedure by this again and to isolating body 210 the micropore hole is set.
Please consult simultaneously shown in Fig. 2 and Fig. 3 C, step S4 is for forming one first barrier film 211 in a side of isolating body 210.In the present embodiment, first barrier film 211 is for example to utilize a single face rubbing method or a dip coating (Dipping) to form.And first barrier film, 211 employed materials are the polymer that mix for ceramic material and macromolecule polymer material, and ceramic material accounts for more than 20% at least in this polymer.In addition, ceramic material for example is alundum (Al (Al
3O
2), titanium dioxide (TiO
2), silicon dioxide (SiO
2) or alkylation silicon dioxide, macromolecule polymer material then for example is the copolymer (for example PVDF-HFP) of pi (PI), vinylidene (PVDF) or vinylidene and group that its derivative or mixture is constituted.So far then finish the processing procedure of separator 21 of the present invention, and owing to isolate the material behavior of the body 210 and first barrier film 211, so separator 21 of the present invention does not have compressibility (compressible) in fact, but have pliability (flexible) and can bend, the application of separator 21 of the present invention can be increased by this, for example the pliability electronic product can be applied in.
Again, seeing also shown in Figure 4ly, implement the schematic diagram of aspect for another of separator of the present invention, is another separator 21 ' of implementing aspect.Present embodiment is with the difference of previous embodiment: the separator 21 ' of present embodiment is except having the structure identical with previous embodiment, more forming one second barrier film 212 in the opposite side of isolating body 210, is to be located between first barrier film 211 and second barrier film 212 and isolate body 210.Wherein, therefore the identical composition material of first barrier film 211 in 212 utilizations of second barrier film and the previous embodiment does not repeat them here.In addition, first barrier film 211 and second barrier film 212 are to utilize the single face rubbing method to be formed at the both sides that isolate body 210 respectively, maybe can utilize double spread method or dip coating to be formed at simultaneously to isolate the both sides of body 210, its formation method select for use end to reduce cost and to raise the efficiency to preferentially considering.
Then, see also shown in Figure 5ly, be the structural representation of a kind of electric energy element of foundation preferred embodiment of the present invention.A kind of electric energy element 2 of preferred embodiment of the present invention, it is the separator 21 ' that utilizes as shown in Figure 4, this electric energy element 2 comprises a separator 21 ', one first current collection layer 22, one second current collection layer 23, one first active material layer 24, one second active material layer 25 and an encapsulation unit 26.
This separator 21 ' comprises one and isolates body 210, one first barrier film 211 and one second barrier film 212.Wherein, it is mixing cured via one first material 210a and one second material 210b isolating body 210, and form to remove the first material 210a through an alkali lye etch process, wherein, isolating body 210 is to form at the first material 210a place that is removed to be provided with a plurality of ants hole h, first barrier film 211 is arranged at a side of isolating body 210, second barrier film 212 then is arranged at the opposite side of isolating body 210, wherein isolates body 210 and is located between first barrier film 211 and second barrier film 212.And the manufacture method of separator 21 ' and material composition have described in detail in previous embodiment Fig. 2, Fig. 3 A to Fig. 3 C and Fig. 4, so do not repeat them here.Certainly, in electric energy element 2, separator 21 ' can also be replaced by aforesaid separator 21; Wherein, though separator 21 only has a barrier film (i.e. first barrier film 211), it cooperates the ant pore structure of isolating body 210, still can reach the effect of insulating electron, uses and avoids electric energy element 2 generation internal discharges and influence its electric power quality.
This first current collection layer 22 is arranged at a side of separator 21 ', 23 opposite sides that are arranged at separator 21 ' of this second current collection layer, and the material of first current collection layer 22 and second current collection layer 23 for example is metal or metal alloy such as copper, aluminium, nickel, tin, silver, gold.
This first active material layer 24 is to be folded between the separator 21 ' and first current collection layer 22;
This second active material layer 25 then is folded between the separator 21 ' and second current collection layer 23.
This encapsulation unit 26 is to be sealing isolation layer 21 ', first current collection layer 22, second current collection layer 23, first active material layer 24 and second active material layer, 25 formed structures.
In addition, by the use of different first electrode base boards (comprising first current collection layer 22 and first active material layer 24) with second electrode base board (comprising second current collection layer 23 and second active material layer 25), electric energy element 2 is to be the supply of electrical energy element, it for example is cell device, or the electrical power storage element, for example be capacity cell (Ultra Capacitor).
And the major function that is formed at those ant holes h on the isolation body 210 of separator 21 ' is as electronic isolation layer and the ion conductting layer of first electrode base board (comprising first current collection layer 22 and first active material layer 24) with second electrode base board (comprising second current collection layer 23 and second active material layer 25), cause micro-short circuit state and excessive first active material layer 24 that causes of localizing electrode's active region load to wear out too fast for fear of hatch frame simultaneously, so need on the h of those ant holes, to cover first separator 211 and second separator 212, its main function not only is the problem that can avoid above, can also strengthen the adhesion strength of first active material layer 24 and second active material layer 25 and the isolation body 210 of corresponding separator 21 ' simultaneously.
Again, isolation body 210 in the separator 21 ' of the present invention, first barrier film 211, second barrier film 212, all be to make separator can bear high temperature by using high heat proof material greater than about 200 ℃, therefore the electric energy element 2 that adds separator 21 ' of the present invention compared with prior art all improves significantly in stability and fail safe.
From the above, because according to a kind of separator of the present invention, be mixing cured one first material of elder generation and one second material, remove first material and form one through the alkali lye etch process again and isolate body, after this barrier film is set to finish the shaping of separator in isolation body one or both sides again.Compared with prior art, the present invention is that the physical characteristic by selected pi makes the isolation body of separator can bear higher temperature, and make the structure that forms an ant hole on the isolation body naturally via the alkali lye etch process, therefore do not need to increase in addition again a processing procedure and on the isolation body, the micropore hole is set, can increase manufacturing efficient by this.In addition, utilize in first barrier film and second barrier film ceramic material proportion, granular size and distribution of particles to carry out the hatch frame extent control, simultaneously because no matter be barrier film or isolation body, quite good physical characteristic is all arranged, as high temperature resistant, pliability and Incoercibility, so utilize the electric energy element of separator of the present invention also therefore can obtain higher thermal stability and fail safe.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (14)
1, a kind of separator manufacture method is to be used to make a separator, it is characterized in that this manufacture method comprises the following step:
Mix one first material and one second material;
Solidify this first material and this second material;
Utilize the alkali lye etching mode to remove this first material and isolate body to form one, wherein this isolation body is to form at this first material place that is removed to be provided with a plurality of ants hole; And
Form the side of one first barrier film in this isolation body.
2, separator manufacture method according to claim 1 is characterized in that the step of this first material of wherein said curing and this second material more comprises:
Remove at least one solvent in this first material and this second material; And
This first material of high temperature cyclisation and this second material.
3, separator manufacture method according to claim 1 is characterized in that it more comprises with next step: form one second barrier film in the opposite side of this isolation body, wherein this isolation body is to be located between this first barrier film and this second barrier film.
4, separator manufacture method according to claim 3, the material that it is characterized in that wherein said first barrier film and this second barrier film are to be a mixture, and this mixture comprises a ceramic material and a high molecular polymer at least.
5, separator manufacture method according to claim 4 is characterized in that wherein said high molecular polymer is copolymer and derivative or the mixture for pi, vinylidene or vinylidene.
6, separator manufacture method according to claim 1 is characterized in that wherein said first material attacked by an alkali lye than this second material is easier.
7, separator manufacture method according to claim 6, it is characterized in that wherein said first material and this second material are to be a chemical polymerization thing, and the quantity of the close base of this first material is the quantity greater than the close base of this second material, this chemical polymerization thing is the forerunner's polymer for pi, and this forerunner's polymer is to be polyamic acid and other derivatives of the same type.
8, a kind of separator is characterized in that it comprises:
One isolates body, is to solidify via one first material and one second material mixing, and forms to remove this first material through an alkali lye etch process, and wherein this isolation body is to form at this first material place that is removed to be provided with a plurality of ants hole; And
One first barrier film is arranged at a side of this isolation body.
9, separator according to claim 8, after it is characterized in that wherein said first material and this second material mixing, at least one solvent in process this first material of removal and this second material and high temperature cyclisation are to form this first material and this second material that solidifies, the material of this first barrier film and this second barrier film is to be a mixture, and this mixture comprises a ceramic material and a high molecular polymer at least.
10, separator according to claim 8 is characterized in that it more comprises:
One second barrier film, it is the opposite side that is arranged at this isolation body, wherein this isolation body is to be located between this first barrier film and this second barrier film, the material of this first barrier film and this second barrier film is to be a mixture, and this mixture comprises a ceramic material and a high molecular polymer at least.
11, separator according to claim 8 is characterized in that wherein said first material attacked by an alkali lye than this second material is easier.
12, separator according to claim 11, it is characterized in that wherein said first material and this second material are to be a chemical polymerization thing, and the quantity of the close base of this first material is the quantity greater than the close base of this second material, this chemical polymerization thing is the forerunner's polymer for pi, and this forerunner's polymer is to be polyamic acid and other derivatives of the same type.
13, a kind of electric energy element is characterized in that it comprises:
One separator, it comprises:
One isolates body, is to solidify via one first material and one second material mixing, and forms to remove this first material through an alkali lye etch process, and wherein this isolation body is to form at this first material place that is removed to be provided with a plurality of ants hole, and
One first barrier film is a side that is arranged at this isolation body;
One first current collection layer is a side that is arranged at this separator;
One second current collection layer is the opposite side that is arranged at this separator;
One first active material layer is to be folded between this separator and this first current collection layer;
One second active material layer is to be folded between this separator and this second current collection layer; And
One encapsulation unit is this separator of sealing, this first current collection layer, this second current collection layer, this first active material layer and the formed structure of this second active material layer.
14, separator according to claim 13 is characterized in that wherein said electric energy element is to be a supply of electrical energy element or an electrical power storage element.
Priority Applications (1)
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| CNA2007101017546A CN101304081A (en) | 2007-05-08 | 2007-05-08 | Electric energy element, isolated layer and method for manufacturing the same |
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| CNA2007101017546A CN101304081A (en) | 2007-05-08 | 2007-05-08 | Electric energy element, isolated layer and method for manufacturing the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881451A (en) * | 2012-10-08 | 2013-01-16 | 中国科学院化学研究所 | All-solid-state power storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881451A (en) * | 2012-10-08 | 2013-01-16 | 中国科学院化学研究所 | All-solid-state power storage device |
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