WO2011145882A2 - 금속 코팅된 고분자 집전체를 갖는 케이블형 이차전지 - Google Patents
금속 코팅된 고분자 집전체를 갖는 케이블형 이차전지 Download PDFInfo
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- WO2011145882A2 WO2011145882A2 PCT/KR2011/003678 KR2011003678W WO2011145882A2 WO 2011145882 A2 WO2011145882 A2 WO 2011145882A2 KR 2011003678 W KR2011003678 W KR 2011003678W WO 2011145882 A2 WO2011145882 A2 WO 2011145882A2
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- current collector
- active material
- secondary battery
- polymer core
- type secondary
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
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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
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
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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
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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
- H01M4/668—Composites of electroconductive material and synthetic resins
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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
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/75—Wires, rods or strips
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- 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
Definitions
- the present invention relates to a cable type secondary battery having a metal current collector coated with a metal.
- a secondary battery is a device that converts external electrical energy into chemical energy, stores it, and generates electricity when needed.
- the term “rechargeable battery” is also used to mean that it can be charged multiple times.
- Commonly used secondary batteries include lead storage batteries, nickel cadmium batteries (NiCd), nickel hydrogen storage batteries (NiMH), lithium ion batteries (Li-ion), and lithium ion polymer batteries (Li-ion polymer). Secondary batteries offer both economic and environmental advantages over primary batteries that are used once and discarded.
- Secondary batteries are currently used where low power is used. Examples are devices, handhelds, tools, and uninterruptible power supplies that help start up the car. Recently, the development of wireless communication technology has led to the popularization of portable devices, and there is also a tendency to wirelessize many kinds of conventional devices, and the demand for secondary batteries is exploding. In addition, hybrid vehicles and electric vehicles have been put to practical use in terms of preventing environmental pollution. These next-generation vehicles employ technologies that use secondary batteries to reduce value, weight, and increase lifespan.
- secondary batteries are cylindrical, rectangular or pouch type batteries. This is because the secondary battery is manufactured by mounting an electrode assembly composed of a negative electrode, a positive electrode, and a separator inside a pouch-shaped case of a cylindrical or rectangular metal can or an aluminum laminate sheet, and injecting an electrolyte into the electrode assembly. Therefore, since a certain space for mounting the secondary battery is essentially required, the cylindrical, square or pouch type of the secondary battery has a problem in that it acts as a limitation for the development of various types of portable devices. Accordingly, there is a need for a new secondary battery that is easily deformed in form.
- Korean Patent No. 742739 discloses a variable linear battery of a thread type that is easy to weave, and has a metal or conductive material as a current collector. Polymer is used. However, a current collector made of metal is not flexible and difficult to lighten, and a current collector made of conductive polymer does not have excellent conductivity as compared to metal.
- an object of the present invention is to provide a current collector suitable for a cable type secondary battery, which is easily deformable and can maintain stability and excellent performance of the secondary battery.
- the cable type secondary battery of the present invention includes a current collector having a horizontal cross-section of a predetermined shape and an active material layer formed on the surface of the current collector, the cable type secondary battery having an electrode extending in the longitudinal direction and arranged in parallel
- the current collector includes a polymer core part and a metal coating layer formed on a surface of the polymer core part.
- the polymer core portion may be used as long as it is easily bent when molded, for example, polyacetylene, polyaniline, polypyrrole, polythiophene, polysulfurnitride (poly sulfur nitride), polyethylene (polyetylene, PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl alcohol (polyvinyl alcoho, PVA), acrylic polymer (polyacrylate), and polytetra Fluoroethylene (polytetrafluoroethylene, PTFE) and the like may be used.
- the metal coating layer is silver, palladium, nickel and copper And the like may be used.
- the cable type secondary battery of the present invention is provided with a metal-coated polymer current collector having high flexibility and conductivity at the same time, and thus has excellent flexibility while maintaining battery performance. It is also possible to reduce the weight.
- FIG. 1 is a cross-sectional view of a current collector having a polymer core and a metal coating layer formed on a surface of the polymer core according to one embodiment.
- FIG. 2 is a cross-sectional view of a cable type secondary battery in which an electrolyte layer is filled between an internal electrode and an external electrode according to an embodiment.
- FIG 3 is a cross-sectional view of a cable type secondary battery in which an electrolyte layer is filled between an internal electrode and an external electrode according to an embodiment.
- FIG. 4 is a cross-sectional view of a cable type secondary battery filled with an active material layer surrounding an internal electrode according to an exemplary embodiment.
- FIG. 5 is a cross-sectional view of a cable type secondary battery including a first electrolyte layer and a second electrolyte layer, according to an exemplary embodiment.
- FIG. 6 is a SEM photograph of a current collector having a polymer core and a metal coating layer formed on a surface of the polymer core according to an embodiment.
- FIG. 7 illustrates a method for measuring bending ability according to an embodiment.
- FIG. 8 is a SEM photograph of a current collector surface including a polymer core and a metal coating layer formed on a surface of the polymer core according to bending ability.
- FIG. 9 is a graph showing charge and discharge of a battery according to an embodiment.
- electrolyte layer 31 first electrolyte layer
- a cable type secondary battery includes a current collector having a horizontal cross section having a predetermined shape and an active material layer formed on a surface of the current collector, and having electrodes extending in a longitudinal direction and arranged in parallel.
- the current collector 5 includes a polymer core portion 1 and a metal coating layer 2 formed on the surface of the polymer core portion.
- the predetermined shape means that the shape is not particularly limited, and any shape that does not impair the essence of the present invention is possible.
- the horizontal cross section of the current collector 5 may be circular or polygonal, and the circular structure is a geometrically perfect symmetrical circular and asymmetrical elliptical structure.
- the polygonal structure is not particularly limited, and non-limiting examples of such polygonal structures may be triangles, squares, pentagons or hexagons.
- a pipe-type current collector having a circular or polygonal shape may be used by deforming or processing the sheet current collector in a manufacturing process.
- the cable type secondary battery of the present invention has a horizontal cross section of a predetermined shape, and is a secondary battery having a linear structure elongated in the longitudinal direction with respect to the horizontal cross section, and it is important to secure flexibility in order to achieve a property free of deformation. Do.
- the cable-type secondary battery of the present invention may be provided with a plurality of electrodes, and a plurality of current collectors are used, the minute difference in flexibility of each current collector also greatly affects the flexible performance of the entire secondary battery.
- the present invention provides a current collector 5 having a polymer core portion 1 and a metal coating layer 2 formed on the surface of the polymer core portion.
- the current collector collects electrons generated by the electrochemical reaction of the active material or serves to supply electrons required for the electrochemical reaction.
- a metal such as copper or aluminum is used.
- a conductive polymer such as polypyrrole may be used as a current collector.
- these conductive polymers have poor conductivity as compared to metals, resulting in deterioration of battery performance.
- the current collector of the present invention provides the same conductivity as the metal through the metal coating layer (2) formed on the surface of the polymer core portion (1) while ensuring flexibility and light weight of the battery due to the polymer core portion (1) Prevent performance degradation.
- the polymer core portion 1 has a shape elongated in the longitudinal direction with respect to a cross section having a predetermined shape, and a metal coating layer 2 having excellent conductivity is formed on the surface of the polymer core portion.
- the polymer forming the polymer core 1 is not particularly limited, and may be polyethylene, polypropylene, polypropylene (PP), polyvinyl chloride (PVC), polyvinyl alcohol (polyvinyl alcoho, Non-conductive polymers such as PVA) and acrylic polymers (polyacrylate) and polytetrafluoroethylene (PTFE), as well as polyacetylene, polyaniline, polypyrrole, polythiophene And conductive polymers such as poly sulfur nitride.
- the metal forming the metal coating layer 2 is not particularly limited, but may be silver, palladium, nickel and copper. It is preferable to use etc.
- the electrodes which are such cathodes or anodes, are arranged in parallel, as well as when the plurality of electrodes are arranged side by side in a straight line, as well as when the plurality of electrodes are twisted with each other.
- the active material layer acts to move ions through a current collector, and the movement of these ions is caused by interaction through occlusion of ions from the electrolyte layer and release of ions into the electrolyte layer.
- the battery capacity balance is maintained when the negative electrode active material contains more negative electrode active material than the positive electrode active material.
- the number of internal electrodes is adjustable, so that the capacity balance between the internal electrodes and the external electrodes can be easily adjusted.
- the active material is a carbonaceous material; LTO; Any of active material particles selected from the group consisting of Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe, and oxides thereof, or mixtures of two or more thereof may be used.
- the carbonaceous material is not particularly limited, but natural graphite and artificial graphite can be used, and a composite of such carbonaceous material and metal can also be used.
- Non-limiting examples of the positive electrode active material layer LiCoO 2 , LiNiO 2 , LiMn 2 O 4 , LiCoPO 4 , LiFePO 4 , LiNiMnCoO 2 and LiNi 1-xyz Co x M1 y M2 z O 2
- M1 and M2 are independently of each other Al, Ni, Co, Fe, Mn, V, Cr, Ti, W, Ta, Mg and Mo, any one selected from the group, x, y and z independently of each other as the atomic fraction of the elements of the oxide composition 0 ⁇ x ⁇ 0.5, 0 ⁇ y ⁇ 0.5, 0 ⁇ z ⁇ 0.5, and x + y + z ⁇ 1) or the like.
- a cable type secondary battery has a horizontal cross section of a predetermined shape, and has a current collector 10 including a polymer core portion extending in a longitudinal direction and a metal coating layer formed on a surface of the polymer core portion.
- An electrolyte layer 30 filling the inner electrode and serving as a passage of ions;
- An external electrode which is an anode (20, 21) having a cathode active material (21) coated on a pipe-shaped current collector (20) having a horizontal cross section of a predetermined shape surrounding an outer surface of the electrolyte layer;
- a protective coating 40 disposed around the external electrode.
- the cathodes 10 and 11 or the anodes 20 and 21 of the cable type secondary battery have active materials 11 and 21 on the current collectors 10 and 20 having a polymer core portion and a metal coating layer formed on the surface of the polymer core portion. Although it is apply
- the outside of the internal electrodes may be coated with the electrolyte layer 30 or manufactured by inserting the internal electrodes into the electrolyte layer 30.
- the internal electrode and the electrolyte layer 30 may be formed, and the external electrodes 20 and 21 and the protective coating 40 may be formed on the outer surface thereof.
- the internal electrodes may be inserted into the electrolyte layer 30, or the external electrodes 20 and 21 may be protected. After the coating 40 is formed, an internal electrode may be inserted to fill the electrolyte layer 30.
- the electrolyte layer serving as a passage of the ions is a gel polymer electrolyte using PEO, PVdF, PMMA, PAN or PVAC; Or a solid electrolyte using PEO, polypropylene oxide (PPO), polyethylene imine (PEI), polyethyle sulphide (PES), or polyvinyl acetate (PVAc); Etc.
- the matrix of the solid electrolyte is preferably made of polymer or ceramic glass as a basic skeleton.
- ions may move very slowly in terms of reaction rate, and thus, it is preferable to use an electrolyte of a gel polymer having easier movement of ions than a solid.
- the gel polymer electrolyte is not excellent in mechanical properties, it may include a pore structure support or a crosslinked polymer to compensate for this. Since the electrolyte layer of the present invention may serve as a separator, a separate separator may not be used.
- the electrolyte layer of the present invention may further include a lithium salt.
- Lithium salts can improve ionic conductivity and reaction rate, non-limiting examples of which are LiCl, LiBr, LiI, LiClO 4 , LiBF 4 , LiB 10 Cl 10 , LiPF 6 , LiCF 3 SO 3 , LiCF 3 CO 2, LiAsF 6, LiSbF 6, LiAlCl 4, CH 3 SO 3 Li, CF 3 SO 3 Li, (CF 3 SO 2) 2 NLi, chloro may borane lithium, lower aliphatic carboxylic acid lithium, and lithium tetraphenyl borate available .
- the protective coating of the present invention is formed on the outer surface of the battery as an insulator to protect the electrode against moisture and external shock in the air.
- a conventional polymer resin can be used.
- PVC, HDPE or epoxy resin can be used.
- the modified cable type secondary batteries of FIGS. 3, 4, and 5 are also possible.
- a cable type secondary battery has a horizontal cross section of a predetermined shape and includes a current collector including two or more polymer core parts extending in a length direction and a metal coating layer formed on a surface of the polymer core part.
- An electrolyte layer 30 filling the inner electrode and serving as a passage of ions;
- An external electrode which is an anode (20, 21) coated with a cathode active material (21) on a pipe-shaped polymer current collector (20) having a horizontal cross section of a predetermined shape surrounding the outer surface of the electrolyte layer;
- a protective coating 40 disposed around the external electrode. Since the contact area is increased by providing a plurality of internal electrodes and pipe-type external electrodes, the battery cell has a high battery rate and the capacity balance between the internal electrodes and the external electrodes can be easily adjusted by controlling the number of internal electrodes.
- the cathodes 10 and 11 or the anodes 20 and 21 of the cable type secondary battery have active materials 11 and 21 on the current collectors 10 and 20 having a polymer core portion and a metal coating layer formed on the surface of the polymer core portion.
- a general coating method may be applied. Specifically, an electroplating or anodizing process may be used, and an electrode slurry containing an active material may be extruded. It is preferable to manufacture using a method for extrusion coating through.
- the outside of the internal electrodes may be coated with the electrolyte layer 30 or manufactured by inserting the internal electrodes into the electrolyte layer 30.
- the internal electrode and the electrolyte layer 30 may be formed, and the external electrodes 20 and 21 and the protective coating 40 may be formed on the outer surface thereof.
- the internal electrodes may be inserted into the electrolyte layer 30, or the external electrodes 20 and 21 may be protected.
- an internal electrode may be inserted to fill the electrolyte layer 30.
- the cable type secondary battery has a horizontal cross section of a predetermined shape, and has a polymer core portion and a polymer core portion formed on an outer surface of an electrolyte layer 30 extending in a longitudinal direction and serving as an ion passageway.
- An internal electrode in which at least two negative electrodes 10 and 11 coated with the negative electrode active material 11 are disposed in parallel on the current collector 10 having a metal coating layer formed on the sub-surface;
- a protective coating 40 disposed around the external electrode.
- the battery cell Since the contact area is increased by providing a plurality of internal electrodes inside the pipe type external electrodes, the battery cell has a high battery rate. In addition, by adjusting the number of internal electrodes, it is easy to adjust the capacity balance between the internal electrodes and the external electrodes, and an electrolyte layer is formed on the internal electrodes to prevent short circuits.
- the manufactured cathodes 10 and 11 or the anodes 10 and 11 are used as internal electrodes and the outer surface of the internal electrodes is coated with the electrolyte layer 30.
- the outside of the internal electrode coated with the electrolyte layer may be manufactured by coating the active material 21 or inserting the internal electrode into the active material layer 21.
- the internal electrode and the active material may be formed, and the current collector 20 and the protective coating 40 of the external electrode may be formed on the outer surface thereof.
- the internal electrode is inserted into the active material of the external electrode, or the current collector 21 and the protective coating 40 of the external electrode are prepared. After forming the), it is also possible to insert the internal electrode and fill the active material to manufacture.
- the cable type secondary battery has a horizontal cross-section having a predetermined shape, and has a polymer core part formed on an outer surface thereof with a first electrolyte layer 31 extending in a longitudinal direction and serving as an ion passageway.
- One or more negative electrodes 10 and 11 having a negative electrode active material coated on a current collector having a metal coating layer formed on the surface of the polymer core part;
- At least one positive electrode 20, 21 having a horizontal cross section of a predetermined shape and having a positive electrode active material 21 coated on a current collector 20 having a polymer core portion extending in a longitudinal direction and a metal coating layer formed on a surface of the polymer core portion.
- a second electrolyte layer 32 which has both of these cathodes and anodes arranged in parallel and commonly surrounds and serves as a passage for filled ions; And a protective coating 40 disposed around the second electrolyte layer 32, and an electrolyte layer may be further formed on the anodes 20 and 21.
- An additional electrolyte layer is introduced into the electrode to prevent shorting. Since the contact area is increased by providing a plurality of positive and negative electrodes, it has a high battery rate. In addition, it is easy to adjust the capacity balance of the electrode by adjusting the number of cathodes and anodes.
- the cable type secondary battery is coated with the second electrolyte layer 32 or coated with the second electrolyte layer 32 so as to surround both the negative electrode and the positive electrode after coating the first electrolyte layer 31 on the manufactured negative electrode or positive electrode. It can be prepared through the process of inserting, and then can be prepared by a method of forming a protective coating 40 on the outer surface of the second electrolyte layer (32). In addition, after the second electrolyte layer 32 and the protective coating 40 are formed, a method of manufacturing the cathode and the anode by inserting the second electrolyte layer 32 is also possible.
- Teflon was extruded to prepare a wire-shaped polymer core, and copper was coated on the surface of the polymer core by electroless plating to prepare a current collector. Again, tin (Sn) was electroplated on the current collector in the form of wire to form a negative electrode active material layer to prepare a negative electrode.
- a beaker cell in the form of a 3-pole electrochemical cell was prepared by using a lithium foil as a counter / reference electrode and using the cathode prepared in Preparation Example 1 as a working electrode. .
- a copper coated current collector, a copper current collector, and a conductive polymer polypyrrole current collector were prepared on the Teflon surface of Preparation Example 1, and the electrical conductivity thereof was measured.
- the electrical conductivity of the current collector coated with copper on the polymer core and the copper current collector is similar, but in the case of the conductive polymer polypyrrole, the conductivity is relatively low.
- the metal coating part of the metal-coated polymer current collector can know the degree of deformation and the degree of flexibility due to external force.
- a wire-shaped current collector was wound around a circular plate, and the surface of the metal coating part was observed through an SEM and shown in FIG. 8.
- the radius of curvature R (curvature 1 / R) was tested with varying 1.5mm, 2.5mm, 3.25mm, 3.5mm, 5mm, 15mm.
- Example 1 After charging the constant current up to 5mV at a current density of 0.5C at the time of charging, it was kept constant at 5mV at a constant voltage, and charging was completed when the current density became 0.005C. The discharge was completed in CC mode up to 2V at a current density of 0.5C. Charge and discharge were repeated 20 times under the same conditions, and the charge and discharge test results are shown in FIG. 9.
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Abstract
Description
집전체 | 전도도(S/cm) |
구리 코팅된 고분자 집전체 | 3.7 ×105 |
구리 집전체 | 3.9 ×105 |
전도성 고분자(폴리피롤) | 102 |
Claims (14)
- 소정 형상의 수평 단면을 가지는 집전체 및 상기 집전체의 표면에 형성된 활물질층을 포함하고, 길이 방향으로 연장되며 평행하게 배치되는 전극을 구비하는 케이블형 이차전지에 있어서,상기 집전체는 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 것을 특징으로 하는 케이블형 이차전지.
- 제 1항에 있어서,상기 고분자 코어부는 폴리아세틸렌 (polyacetylene), 폴리아닐린 (polyaniline), 폴리피롤 (polypyrrole), 폴리티오펜 (polythiophene), 폴리설퍼니트리드(poly sulfur nitride), 폴리에틸렌(polyetylene, PE), 폴리프로필렌(polypropylene, PP), 폴리염화비닐(polyvinyl chloride, PVC), 폴리비닐알코올(polyvinyl alcoho, PVA), 아크릴계 고분자(polyacrylate), 및 폴리테트라플루오로에틸렌(polytetrafluoroethylene, PTFE) 중에서 선택된 1종 화합물 또는 2종 이상의 혼합물인 고분자로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 제 1항에 있어서,상기 금속 코팅층은 은, 팔라듐, 니켈 및 구리 중에서 선택된 1종 또는 2종 이상의 혼합물인 금속으로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 제 1항에 있어서,상기 활물질층은 탄소질 재료; LTO; Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe 및 이들의 산화물로 이루어진 군으로부터 선택된 어느 하나의 활물질 입자 또는 이들 중 2종 이상의 혼합물인 음극 활물질으로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 제 1항에 있어서,상기 활물질층은 LiCoO2, LiNiO2, LiMn2O4, LiCoPO4, LiFePO4, LiNiMnCoO2 및 LiNi1-x-y-zCoxM1yM2zO2(M1 및 M2는 서로 독립적으로 Al, Ni, Co, Fe, Mn, V, Cr, Ti, W, Ta, Mg 및 Mo로 이루어진 군으로부터 선택된 어느 하나이고, x, y 및 z는 서로 독립적으로 산화물 조성 원소들의 원자 분율로서 0 ≤ x < 0.5, 0 ≤ y < 0.5, 0 ≤ z < 0.5, x+y+z ≤ 1임)로 이루어진 군으로부터 선택된 어느 하나의 활물질 입자 또는 이들 중 2종 이상의 혼합물인 양극 활물질으로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며 길이 방향으로 연장된, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 음극활물질층이 형성된 음극이 평행하게 배치된 내부전극;상기 내부전극을 둘러싸며 충진된, 이온의 통로가 되는 전해질층;상기 전해질층의 외면을 둘러싸는, 소정 형상의 수평 단면을 갖는 파이프형의 집전체에 양극활물질층이 형성된 양극인 외부전극; 및상기 외부전극의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며 길이 방향으로 연장된, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 음극활물질층이 형성된 2 이상의 음극이 평행하게 배치된 내부전극;상기 내부전극을 둘러싸며 충진된, 이온의 통로가 되는 전해질층;상기 전해질층의 외면을 둘러싸는, 양극활물질층이 형성된 파이프형의 집전체인 양극으로 이루어진 외부전극; 및상기 외부전극의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며 길이 방향으로 연장된, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 음극활물질층이 형성된 2 이상의 음극이 평행하게 배치된 내부전극;상기 내부전극을 둘러싸며 충진된 양극활물질층을 포함하는 파이프형의 집전체인 양극으로 이루어진 외부전극; 및상기 외부전극의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며 길이 방향으로 연장된, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 양극활물질층이 형성된 2 이상의 양극이 평행하게 배치된 내부전극;상기 내부전극을 둘러싸며 충진된 음극 활물질층을 포함하는 파이프형의 집전체인 음극으로 이루어진 외부전극; 및상기 외부전극의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며 길이 방향으로 연장되고, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 음극 활물질층이 형성되고, 상기 음극 활물질층의 외면에 이온의 통로가 되는 제1 전해질층이 형성된 1 이상의 음극;소정 형상의 수평 단면을 가지며 길이 방향으로 연장되는, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 양극활물질층이 형성된 1 이상의 양극;이들 음극 및 양극 모두를 평행하게 배치하고 공통으로 둘러싸며 충진된 이온의 통로가 되는 제2 전해질층; 및상기 제2 전해질층의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며 길이 방향으로 연장되고, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 양극 활물질층이 형성되고, 상기 양극 활물질층의 외면에 이온의 통로가 되는 제1 전해질층이 형성된 1 이상의 양극;소정 형상의 수평 단면을 가지며 길이 방향으로 연장되는, 고분자 코어부 및 상기 고분자 코어부 표면에 형성된 금속 코팅층을 구비하는 집전체에 음극활물질층이 형성된 1 이상의 음극;이들 음극 및 양극 모두를 평행하게 배치하고 공통으로 둘러싸며 충진된 이온의 통로가 되는 제2 전해질층; 및상기 제2 전해질층의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 제 6항 내지 제 11항 중 어느 한 항에 있어서,상기 전해질층, 제1 전해질층 또는 제2 전해질층은 서로 독립적으로 PEO, PVdF, PMMA, PAN 또는 PVAC를 사용한 겔형 고분자 전해질; 또는 PEO, PPO(polypropylene oxide), PEI(polyethylene imine), PES(polyethyle sulphide) 또는 PVAc(polyvinyl acetate)를 사용한 고체 전해질; 중에서 선택된 전해질로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 제 6항 내지 제 11항 중 어느 한 항에 있어서,상기 전해질층은 리튬염을 더 포함하는 것을 특징으로 하는 케이블형 이차전지.
- 제 13항에 있어서,상기 리튬염은 LiCl, LiBr, LiI, LiClO4, LiBF4, LiB10Cl10, LiPF6, LiCF3SO3, LiCF3CO2, LiAsF6, LiSbF6, LiAlCl4, CH3SO3Li, CF3SO3Li, (CF3SO2)2NLi, 클로로보란리튬, 저급지방족카르본산리튬 및 4페닐붕산리튬 중에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 케이블형 이차전지.
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JP2013514101A JP5721822B2 (ja) | 2010-05-20 | 2011-05-18 | 金属コーティングされた高分子集電体を有するケーブル型二次電池 |
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KR20090009598A (ko) * | 2007-07-20 | 2009-01-23 | 경상대학교산학협력단 | 무선 충전용 선형 전지 |
JP2010040488A (ja) * | 2008-08-08 | 2010-02-18 | Sharp Corp | 電池 |
JP2010073533A (ja) * | 2008-09-19 | 2010-04-02 | National Institute Of Advanced Industrial Science & Technology | 充放電可能な電池 |
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2010
- 2010-05-20 KR KR1020100047529A patent/KR20110127972A/ko active Application Filing
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2011
- 2011-05-18 JP JP2013514101A patent/JP5721822B2/ja active Active
- 2011-05-18 CN CN201180035233.XA patent/CN103003993B/zh active Active
- 2011-05-18 EP EP11783764.1A patent/EP2573848A4/en not_active Withdrawn
- 2011-05-18 EP EP16161219.7A patent/EP3057160B1/en active Active
- 2011-05-18 WO PCT/KR2011/003678 patent/WO2011145882A2/ko active Application Filing
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2012
- 2012-02-17 US US13/399,265 patent/US8465865B2/en active Active
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2015
- 2015-03-24 JP JP2015060846A patent/JP6027165B2/ja active Active
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KR100742739B1 (ko) | 2005-07-15 | 2007-07-25 | 경상대학교산학협력단 | 직조가 쉬운 실 형태의 가변형 전지 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015505127A (ja) * | 2011-12-10 | 2015-02-16 | カルプツリー・エナジー・インコーポレイテッドKalptree Energy, Inc. | リチウムイオン電池および金属ワイヤー上の電池活性構成要素 |
JP2014534596A (ja) * | 2011-12-14 | 2014-12-18 | エルジー・ケム・リミテッド | ケーブル型二次電池 |
US9059473B2 (en) | 2011-12-14 | 2015-06-16 | Lg Chem, Ltd. | Cable-type secondary battery |
US9620807B2 (en) | 2011-12-14 | 2017-04-11 | Lg Chem, Ltd. | Cable-type secondary battery |
US20140370350A1 (en) * | 2013-05-07 | 2014-12-18 | Lg Chem, Ltd. | Electrode for secondary battery, preparation thereof, and secondary battery and cable-type secondary battery comprising the same |
US9755278B2 (en) | 2013-05-07 | 2017-09-05 | Lg Chem, Ltd. | Cable-type secondary battery and preparation thereof |
US9755267B2 (en) | 2013-05-07 | 2017-09-05 | Lg Chem, Ltd. | Cable-type secondary battery |
US9972861B2 (en) * | 2013-05-07 | 2018-05-15 | Lg Chem, Ltd. | Electrode for secondary battery, preparation thereof, and secondary battery and cable-type secondary battery comprising the same |
Also Published As
Publication number | Publication date |
---|---|
EP3057160B1 (en) | 2018-09-19 |
CN103003993B (zh) | 2015-11-25 |
EP3057160A2 (en) | 2016-08-17 |
JP5721822B2 (ja) | 2015-05-20 |
JP6027165B2 (ja) | 2016-11-16 |
JP2013534694A (ja) | 2013-09-05 |
US8465865B2 (en) | 2013-06-18 |
EP2573848A2 (en) | 2013-03-27 |
EP3057160A3 (en) | 2016-10-19 |
US20120148902A1 (en) | 2012-06-14 |
KR20110127972A (ko) | 2011-11-28 |
EP2573848A4 (en) | 2014-01-22 |
CN103003993A (zh) | 2013-03-27 |
WO2011145882A3 (ko) | 2012-04-19 |
JP2015135829A (ja) | 2015-07-27 |
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