CN102683713A - Rolled copper foil for lithium ion secondary battery current collector - Google Patents
Rolled copper foil for lithium ion secondary battery current collector Download PDFInfo
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- CN102683713A CN102683713A CN2011101995776A CN201110199577A CN102683713A CN 102683713 A CN102683713 A CN 102683713A CN 2011101995776 A CN2011101995776 A CN 2011101995776A CN 201110199577 A CN201110199577 A CN 201110199577A CN 102683713 A CN102683713 A CN 102683713A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
- H01M4/662—Alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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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
Abstract
The invention provides a rolled copper foil for a lithium ion secondary battery current collector capable of improving sealing property with resin. The rolled copper foil uses copper as a main component and contains a copper alloy comprising more than one additive element selected from a group consisting of Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and Mn and unavoidable impurities and the X-ray diffraction 2theta/theta measurement shows that the ratio I(220)/I(200) of the diffraction peak intensity I(220) of (220)Cu direction of a copper crystal to the diffraction peak intensity I(200) of (200)Cu direction of the copper crystal is >2.
Description
Technical field
The lithium rechargeable battery collector body with resin adaptation that the present invention relates to be suitable for the collector body of lithium rechargeable battery is used rolled copper foil.
Background technology
Lithium rechargeable battery is also high owing to obtaining high voltage, energy density, therefore is used as the battery of electronic equipments such as mobile personal computer and portable terminal.In addition, use battery, also researching and developing actively as the driving of PHEV and electric motor car.
The essential structure of this lithium rechargeable battery is between by the positive plate of barrier insulation and negative plate, to move repeated charge through the lithium ion in the electrolyte.Importantly find the material that to realize electrolyte, dividing plate, positive plate and the negative plate of this structure with high cycle characteristics.
As the negative plate that is used in lithium rechargeable battery, usually by constituting as the negative electrode collector of material and the negative electrode active material layer that on this collector body, forms with Copper Foil.With regard to the Copper Foil that constitutes this negative electrode collector, use be on the thick lath of making through casting, to implement rolled copper foil that rolling processing makes and the electrolytic copper foil that from the electrolyte that contains copper ion, the metallic copper electro-deposition is made.With regard to this rolled copper foil, it is characterized by the copper crystal tissue that to control Copper Foil or copper alloy foil through the combination of rolling processing and heat treated.
The thickness of the negative electrode active material layer that forms on the surface of Copper Foil about with 100 μ m forms.This negative electrode active material layer can through carbon granules such as electrographite, native graphite or coke and Kynoar adhesives such as (PVdF) and conductive auxiliary agent are mixed together in form pulpous state in N-N-methyl-2-2-pyrrolidone N-(NMP) equal solvent after; It is coated copper foil surface, carry out dry solidification again and obtain.
For lithium rechargeable battery, if repeated charge, then owing to follow expansion, the contraction of carbon granules of occlusion, the disengaging of lithium, carbon is peeled off from Copper Foil easily, thereby might cause the reduction of interelectrode short circuit, battery capacity and the deterioration of cycle characteristics etc.Therefore, use Copper Foil, require high adaptation with the carbon that constitutes negative electrode active material layer as negative electrode collector.If the increasing proportion of the adhesive in the slurry though then can improve the adaptation with carbon to a certain degree, because the conductivity of electrode descends, is not effective way therefore.
Therefore, in order to address the above problem, carried out implementing to form concavo-convex roughened at copper foil surface.As the method for this roughened, known blasting treatment arranged, utilize rolling, mechanical lapping, electrolytic polishing, the chemical grinding of matsurface roll and the methods such as plating of electroplating particle, wherein, plating of electroplating particle commonly used especially.
But inhomogeneous and roughening particle that roughness is high weakens anchor effect conversely, thereby can't obtain the high adaptation between negative electrode collector and the negative electrode active material.Therefore, on copper foil surface, keep complicated structure, taked to implement repeatedly the method (for example with reference to patent documentation 1) of electroplating processes or reflow treatment for the roughening particle that utilizes low roughness property.
Patent documentation 1: Japanese 2009-87561 communique
Summary of the invention
But the method for above-mentioned patent documentation 1 record is because expensive, thus the high price that causes lithium rechargeable battery format, hinder extensively universal towards the lithium rechargeable battery of electronic equipment and electric motor car etc.
The objective of the invention is to stable and provide a kind of the raising to use rolled copper foil efficiently with the lithium rechargeable battery collector body of the adaptation of resin.
The inventor etc. have carried out active research in order to achieve the above object; The result learns: if utilize certain the specific dependency relation between the resin adaptation of orientation, state of orientation and Copper Foil of crystal grain of rolling surface of rolled copper foil; Then can obtain unexpected achievement; For example do not implement to electroplate the roughened such as plating of particle and the resin adaptation of Copper Foil raises, thereby can form the goods of the excellence that does not have problems in the practicality at copper foil surface.
[1] promptly; The present invention is that a kind of lithium rechargeable battery collector body is used rolled copper foil; Be characterised in that having with copper is that the copper alloy that adds element and unavoidable impurities more than a kind that principal component and containing is selected among Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and the Mn is formed, and measures { the 220} of the copper crystal that obtains through X-ray diffraction 2 θ/θ
CuThe diffraction peak intensity I of direction
{ 220}With { 200}
CuThe diffraction peak intensity I of direction
{ 200}Ratio be I
{ 220}/ I
{ 200}＞2.
[2] in the invention of above-mentioned [1] record, be characterized as in the heating of the temperature below 200 ℃ and after 1 minute～20 hours, measure { the 220} of the copper crystal that obtains through X-ray diffraction 2 θ/θ
CuThe diffraction peak intensity I of direction
{ 220}With { 200}
CuThe diffraction peak intensity I of direction
{ 200}Ratio be I
{ 220}/ I
{ 200}＞2.
[3] in the invention of above-mentioned [1] or [2] record, the total amount that is characterized as aforementioned interpolation element is below the 0.5 weight %.
[4] in the invention of any record of above-mentioned [1]～[3], be characterized as the lithium rechargeable battery collector body and have the thickness below the 20 μ m with rolled copper foil.
According to the present invention, can obtain lithium rechargeable battery collector body good with the adaptation of resin, that can stablize, efficiently realize and use rolled copper foil.
Description of drawings
Fig. 1 is for representing the flow chart of the related lithium rechargeable battery collector body of preferred implementation of the present invention with the flow process of the manufacturing process of copper alloy foil.
Fig. 2 is the skeleton diagram of the relation of incident X-rays, detector, sample and the scan axis of expression X-ray diffraction.
Fig. 3 is expression { 200}
CuThe sketch map of the atomic arrangement of the rolling surface during planar orientation.
Fig. 4 is expression { 220}
CuThe sketch map of the atomic arrangement of the rolling surface during planar orientation.
Fig. 5 is the sketch map of the production process of expression disbonded test sheet.
Symbol description
1 ... Sample, 2 ... Detector, 3 ... Binder film, 4 ... Copper Foil, 5 ... Reinforcement plate, 6 ... The strong adhesive power adhesive tape.
Embodiment
Below, based on accompanying drawing preferred implementation of the present invention is described particularly.
The composition of rolled copper foil
Rolled copper foil in this execution mode is the material that is suitable for as the lithium rechargeable battery collector body.This rolled copper foil is with the following ultimate constituent that constitutes: with Cu (copper) is parent phase; Contain to be selected from and add element more than a kind among Cr (chromium), Zr (zirconium), Sn (tin), Mg (magnesium), Ag (silver), Fe (iron), Co (cobalt), Ni (nickel), Zn (zinc), Ti (titanium), Si (silicon), B (boron), Bi (bismuth), Sb (antimony) and the Mn (manganese), nubbin is made up of unavoidable impurities.As Cu, can use tough pitch copper or oxygen-free copper.
About adding the higher limit that is more preferably of element
The total amount of adding element more than a kind that is selected among Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and the Mn is preferably below the 0.5 weight %.Even the total amount that is added into this interpolation element does not have the stable on heating effect of higher raising more than 0.5 weight % yet.
And, when adding,, therefore might cause using the deterioration of characteristic of the lithium rechargeable batteries such as discharge rate characteristic of the lithium rechargeable battery that this Copper Foil makes because resistance rises more than 0.5 weight %.
About adding the lower limit that is more preferably of element
These add in the element, and preferably the content with Cr, Zr, Sn, Ag, Ti and Sb is set in more than the 0.02 weight %.If these content that add element are less than 0.02 weight %, then can't obtain sufficient thermal endurance.
On the other hand, for the content of Mg, Fe, Co, Ni, Zn, Si, B, Bi and Mn, be more preferably and be set in more than the 0.1 weight %.This is because these interpolation elements are the cause that thermal endurance might descend when being less than 0.1 weight %.
The thickness of rolled copper foil is preferably below the 20 μ m.For the lithium rechargeable battery that the thickness that uses its rolled copper foil is made above the rolled copper foil of 20 μ m, the shared volume fraction of rolled copper foil increases, and can't fully fill negative electrode active material.Therefore, might cause the decline of volume energy density, be not preferred.
The manufacturing approach of rolled copper foil
With reference to Fig. 1, Fig. 1 representes to be used to make the typical manufacturing process of the related rolled copper foil of this execution mode.The operation of making this rolled copper foil contains a succession of operation (step 100～106, below call step " S ") of melting operation, hot-rolled process, cold rolling process, intermediate annealing operation, stock annealing operation, final cold rolling process (finish rolling operation) and negative plate manufacturing process.Through handling successively, can obtain rolled copper foil efficiently as initial target according to these operations.
The melting operation
In this melting operation; Use being selected from below melting furnace melting Cu and the 0.5 weight % to add element more than a kind among Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and the Mn, make as the raw-material ingot casting of copper alloy (ingot bar) (S100 of Fig. 1).
Hot-rolled process
In this hot-rolled process, under the temperature of appointment, ingot casting is implemented hot rolling, form sheet material (S101 of Fig. 1).
Cold rolling process, intermediate annealing operation and stock annealing operation
In this cold rolling process and the intermediate annealing operation, the sheet material after the hot rolling is carried out cold rolling and the intermediate annealing that the relaxes cold rolling caused work hardening (S102 of Fig. 1～S104) aptly repeatedly.Thus, make the copper bar that is called as " stock ".In this stock annealing operation, the processing strain before the preferred fully mitigation stock annealing operation.
Final cold rolling process
In this final cold rolling process, the stock after the annealing is implemented finish rolling operation (S105 of Fig. 1).Thus, can make the rolled copper foil (fine finishining Copper Foil) of appointed thickness.Preferably be made as more than 85% and as total degree of finish less than 95%.Thus, with respect to high degree of finish rolled copper foil in the past, can reduce total passage (パ ス) number of rolling process.In addition, can avoid the degree of difficulty of the excessive caused rolling machining control of work hardening, can help simultaneously the load reduction of manufacturing equipment and the cost degradation of making.Can take into account the high resin adaptation and the cost degradation of rolled copper foil.
Negative plate manufacturing process
Rolled copper foil behind the final cold rolling process is not implemented to electroplate roughened such as the plating of particle and is carried out the next manufacturing of negative plate.In this negative plate manufacturing process, for example in the drying process behind drying process after the negative electrode active material coating or the combination lithium rechargeable battery, carry out 100～200 ℃ heat treatment (S106 of Fig. 1).
In the manufacturing approach of the rolling Copper Foil, importantly under 1 minute～20 hours state of the heating of the temperature below 200 ℃, controlling soon or afterwards behind the final cold rolling process, so that measure { the 220} of the copper crystal that obtains through X-ray diffraction 2 θ/θ
CuThe diffraction peak intensity I of direction
{ 220}With { 200}
CuThe diffraction peak intensity I of direction
{ 200}Ratio (below be called " diffracted intensity than ") have I
{ 220}/ I
{ 200}＞2 relation.Here, I
{ 220}And I
{ 200}Be { the 220} crystal plane and the { X-ray diffraction intensity of 200} crystal plane of the rolling surface of rolled copper foil.
In the above-mentioned final cold rolling process, through implementing more than 85% and cold rolling less than 95% high degree of finish, under soon state behind the final cold rolling process, { 220} on the rolling surface of Copper Foil
CuThe orientation of face strengthens, { 200}
CuThe orientation of face weakens, and the not special restriction of the upper limit of diffracted intensity ratio is compared I but will satisfy diffracted intensity
{ 220}/ I
{ 200}＞2 relation.Be more preferably: preferably satisfy diffracted intensity and compare I
{ 220}/ I
{ 200}＞5 relation.This orientation can be obtained through X-ray diffraction methods such as θ-2 θ methods.
With reference to Fig. 2, Fig. 2 representes the relation of incident X-rays, detector, sample and the scan axis of X-ray diffraction.In the X-ray diffraction device, usually the θ axle is called the sample axle.For incident X-rays,, be that the scan angle of θ, detector 2 is that the mensuration that scans under the situation of 2 θ is called 2 θ/θ and measures with the scan angle of sample 1 at θ axle scanned sample 1 and detector 2.Measure the intensity of caused diffraction maximum through these 2 θ/θ, in the sample face (rolling surface) of multicrystal rolled copper foil, it is dominant can estimating which crystal plane.In addition, because the crystal structure of copper is a cube crystalline substance, therefore { 200}
CuFace and { 220}
CuThe face angulation is 45 °.In addition, " { } " represented face of equal value.
As stated, this rolled copper foil can obtain stable on heating raising through being to add below the 0.5 weight % to be selected to add element more than a kind among Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and the Mn with total amount.Therefore, behind the final cold rolling process, even under the state of the heating of the temperature below 200 ℃ after 1 minute～20 hours, also be difficult to cause to { 200}
CuThe orientation of direction satisfies diffracted intensity and compares I
{ 220}/ I
{ 200}＞2 relation.
In the final cold rolling process, through obtaining to rolling texture { 220}
CuDirection more take by force to, thereby even behind the final cold rolling process soon or afterwards under 1 minute～20 hours state of the heating of the temperature below 200 ℃, also be difficult to cause to { 200} at rolling surface
CuThe orientation of direction can be stablized the rolled copper foil that obtains having good resin adaptation characteristic.
Relate to the investigation of the mechanism of high resin adaptation
According to orientation, the state of orientation of the crystal grain of the rolling surface of rolled copper foil, the state of visible atomic arrangement is different on the copper foil surface, and the atomic distance of copper foil surface can change.As shown in Figure 3, at { 220}
CuOn the face, for certain direction and perpendicular direction, atom is with nearest spacing arrangement.On the other hand, as shown in Figure 4, at { 200}
CuOn the face, arrange with adjacency for certain direction atom, and for perpendicular direction atom approaching spacing arrangement in proper order.
Someone thinks that the resin in copper foil surface coating is by the atom of copper foil surface with constitute under the stable state of interatomic force and resin molecular separating force decision each other between the atom of resin, solidifies on copper foil surface.
Therefore; Someone thinks through optimizing the coupling as the atomic distance of certain the specific periodic molecular that resin had of organic compound and copper foil surface; Can further improve the stability of the stable state of the resin that on copper foil surface, solidifies, relevant with the resin adaptation that improves Copper Foil.
Embodiment
Below, as more concrete execution mode of the present invention, enumerate embodiment and comparative example is elaborated.In addition, among this embodiment, enumerate a typical example of the rolled copper foil of above-mentioned execution mode, certainly, the present invention is not limited to these embodiment and comparative example.
Do not electroplate the roughened such as plating of particle and make the rolled copper foil of embodiment 1～15 and the rolled copper foil of comparative example 1～4, the rolled copper foil of gained is compared and estimates.The composition of the rolled copper foil of embodiment 1～15 and comparative example 1～4 and final heat-treat condition, X-ray diffraction intensity after cold rolling are compared I
{ 220}/ I
{ 200}, the test of peel strength and grid the result gather and be shown in below table 1.
Evaluation method as adaptation; Carry out drying behind the representational Kynoar (PVdF) of rolled copper foil coating to the rolled copper foil of embodiment 1～15 and comparative example 1～4 as the resin solvent of adhesive; To carry out disbonded test and grid test at the material behind the dry solidification adhesive on the copper foil surface (below, be called " adhesive coated copper foil ").
The manufacturing of rolled copper foil
As mother metal, the copper alloy of the alloying component shown in the melting below table 1 is cast as ingot casting with oxygen-free copper.The sheet material that forms this ingot casting is implemented hot rolling implement cold rolling successively and stock annealing after, with 85% or more and finally cold rolling less than 95% high degree of finish enforcement.Thus, obtain the embodiment 1～15 and comparative example 1～4 of the rolled copper foil of thickness 10 μ m.
X-ray diffraction to rolled copper foil
During X-ray diffraction 2 θ/θ of the rolling surface of rolled copper foil measured, use X-ray diffraction device (Rigaku makes, and model is Ultima IV).It is measured the result gathers and is shown in below table 1.
Disbonded test
Fig. 5 schematically representes an example of the production process of disbonded test sheet.Cut into the elongated rectangular shape of wide 12.5mm * long 80mm to the Copper Foil that has been coated with binder film 3 (adhesive coated copper foil) 4, the adhesive coated copper foil 4 of bonding strip on reinforcement plate 5.Stick on strong adhesive power adhesive tape 6 adhesive coated copper foil 4 strip length 1/2nd.Through stretching strong adhesive power adhesive tape 6,, obtain the disbonded test sheet from the part of adhesive coated copper foil 4 release adhesive films 3.Then, be clipped in the binder film 3 of peelling off part on the anchor clamps of electronic stripping tester with strong adhesive power adhesive tape 6, be made as the speed when vertical direction promotes 5mm/ minute, measure peel strength.It is measured the result gathers and is shown in below table 1.
The grid test
As test film, each makes 100 with the rolled copper foil of the rolled copper foil of embodiment 1～15 and comparative example 1～4.Each test film respectively uses 100; According to JIS H 8602; On the binder film 3 of adhesive coated copper foil 4, make 25 (1mm square) grid with cutter; After pasting the cellophane band on this binder film 3 and carrying out driving fit, release adhesive film 3 is estimated cementability through the number of unstripped grid.Here, also unstripped usefulness zero mark of 1 grid, have only that 1～5 grid peels off with △ mark, 6 usefulness * marks of peeling off more than the grid, estimate.Its evaluation result is gathered and is shown in below table 1.
Can know from the result shown in the below table 1; Embodiment 1～15 is through being set in the element that adds more than a kind that is selected among Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and the Mn below the 0.5 weight %, and control so that behind the final cold rolling process soon or afterwards the diffracted intensity ratio under 1 minute～20 hours state of the heating of the temperature below 200 ℃ have I
{ 220}/ I
{ 200}＞2 relation obtains the rolled copper foil as initial target thereby stablize, and can realize good resin adaptation.
On the other hand,, do not containing under the situation that above-mentioned Cr etc. adds elements like comparative example 1 and 2, though behind the final cold rolling process under the state of the heating of the temperature below 200 ℃ after 1 minute～20 hours, also cause to { 200}
CuThe orientation of direction, the diffracted intensity ratio can not satisfy I
{ 220}/ I
{ 200}＞2 relation.Its result can be regarded as, and for comparative example 1 and 2, compares with embodiment 1～15, and peel strength reduces, is difficult to realize good resin adaptation.
In addition, like comparative example 3 and 4, add element even contain above-mentioned Cr etc. in prescribed limit, if the heat-treat condition behind the final cold rolling process departs from the regulation as initial target, then the diffracted intensity ratio can not satisfy I
{ 220}/ I
{ 200}＞2 relation.Its result can be regarded as, and for comparative example 3 and 4, compares with embodiment 1～15, and peel strength reduces, is difficult to realize good resin adaptation.
Therefore; Can know like comparative example 1～4; Even the content of above-mentioned interpolation element is in prescribed limit,, then also can't stablizes and obtain the rolled copper foil good with the adaptation of resin if heat treatment temperature, the condition of time behind the final cold rolling process depart from the regulation as initial target.
By above susceptible of proof, it be the Copper Foil good with the adaptation of resin that lithium rechargeable battery collector body of the present invention uses rolled copper foil, has extremely effective effect on the industry of the long lifetime that can help lithium ion battery and fail safe etc.
As clearly from above explanation institute; Though through enumerating above-mentioned execution mode, embodiment and illustrated example the representational formation example of lithium rechargeable battery collector body of the present invention with rolled copper foil is described, above-mentioned execution mode, embodiment and illustrated example are not limited to the related invention of claim scope.Should be noted that the combination of features explained in above-mentioned execution mode, embodiment and the illustrated example whole might not be necessary to the means that are used to solve problem of the present invention, certainly, in the scope of technological thought of the present invention, can be various formations.
Claims (4)
1. a lithium rechargeable battery collector body is used rolled copper foil; It is characterized in that; Have with copper is that the copper alloy that adds element and unavoidable impurities more than a kind that principal component and containing is selected among Cr, Zr, Sn, Mg, Ag, Fe, Co, Ni, Zn, Ti, Si, B, Bi, Sb and the Mn is formed
Measure { the 220} of the copper crystal that obtains through X-ray diffraction 2 θ/θ
CuThe diffraction peak intensity I of direction
{ 220}With { 200}
CuThe diffraction peak intensity I of direction
{ 200}Ratio be I
{ 220}/ I
{ 200}＞2.
2. lithium rechargeable battery collector body as claimed in claim 1 is used rolled copper foil, it is characterized in that, after 1 minute～20 hours, measures { the 220} of the copper crystal that obtains in the heating of the temperature below 200 ℃ through X-ray diffraction 2 θ/θ
CuThe diffraction peak intensity I of direction
{ 220}With { 200}
CuThe diffraction peak intensity I of direction
{ 200}Ratio be I
{ 220}/ I
{ 200}＞2.
3. according to claim 1 or claim 2 lithium rechargeable battery collector body is used rolled copper foil, it is characterized in that the total amount of said interpolation element is below the 0.5 weight %.
4. use rolled copper foil like each described lithium rechargeable battery collector body of claim 1～3, it is characterized in that, have the thickness below the 20 μ m.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-058926 | 2011-03-17 | ||
| JP2011058926A JP5654911B2 (en) | 2011-03-17 | 2011-03-17 | Rolled copper foil for lithium ion secondary battery current collector |
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| CN102683713A true CN102683713A (en) | 2012-09-19 |
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| TWI502085B (en) * | 2013-09-20 | 2015-10-01 | Jx Nippon Mining & Metals Corp | Copper alloy foil |
| CN105063413A (en) * | 2015-07-29 | 2015-11-18 | 温州银泰合金材料有限公司 | Copper-based electric contact material and manufacturing technology thereof |
| TWI588301B (en) * | 2013-01-29 | 2017-06-21 | Furukawa Electric Co Ltd | Electrodeposited copper foil, electrode for lithium ion secondary battery using the same, and lithium ion secondary battery using the same |
| CN107768675A (en) * | 2016-08-23 | 2018-03-06 | Ls美创有限公司 | Improve electrolytic copper foil, electrode, battery and its manufacture method of capability retention |
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2011
- 2011-03-17 JP JP2011058926A patent/JP5654911B2/en active Active
- 2011-06-13 KR KR1020110057074A patent/KR20120106512A/en active Application Filing
- 2011-07-12 CN CN2011101995776A patent/CN102683713A/en active Pending
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2014
- 2014-04-17 KR KR1020140045859A patent/KR20140053079A/en not_active Application Discontinuation
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| JPH11339811A (en) * | 1998-05-25 | 1999-12-10 | Nippaku Sangyo Kk | Copper alloy foil current collector for secondary battery |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662206A (en) * | 2012-10-31 | 2015-05-27 | 古河电气工业株式会社 | Copper foil, negative electrode for non-aqueous electrolyte secondary cell, and non-aqueous electrolyte secondary cell |
| TWI588301B (en) * | 2013-01-29 | 2017-06-21 | Furukawa Electric Co Ltd | Electrodeposited copper foil, electrode for lithium ion secondary battery using the same, and lithium ion secondary battery using the same |
| TWI502085B (en) * | 2013-09-20 | 2015-10-01 | Jx Nippon Mining & Metals Corp | Copper alloy foil |
| CN105637106A (en) * | 2013-09-20 | 2016-06-01 | Ｊｘ金属株式会社 | Copper alloy foil |
| CN107828984A (en) * | 2013-09-20 | 2018-03-23 | Ｊｘ金属株式会社 | Copper alloy foil |
| CN105637106B (en) * | 2013-09-20 | 2018-11-27 | Ｊｘ金属株式会社 | Copper alloy foil |
| CN105063413A (en) * | 2015-07-29 | 2015-11-18 | 温州银泰合金材料有限公司 | Copper-based electric contact material and manufacturing technology thereof |
| CN107768675A (en) * | 2016-08-23 | 2018-03-06 | Ls美创有限公司 | Improve electrolytic copper foil, electrode, battery and its manufacture method of capability retention |
| CN107768675B (en) * | 2016-08-23 | 2021-10-15 | Sk纳力世有限公司 | Electrolytic copper foil with improved capacity retention rate, electrode, secondary battery and method for manufacturing same |
| CN110923503A (en) * | 2019-12-31 | 2020-03-27 | 厦门火炬特种金属材料有限公司 | Low-temperature resistance alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120106512A (en) | 2012-09-26 |
| JP5654911B2 (en) | 2015-01-14 |
| KR20140053079A (en) | 2014-05-07 |
| JP2012195192A (en) | 2012-10-11 |
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