WO2011093659A2 - 케이블형 이차전지 - Google Patents
케이블형 이차전지 Download PDFInfo
- Publication number
- WO2011093659A2 WO2011093659A2 PCT/KR2011/000580 KR2011000580W WO2011093659A2 WO 2011093659 A2 WO2011093659 A2 WO 2011093659A2 KR 2011000580 W KR2011000580 W KR 2011000580W WO 2011093659 A2 WO2011093659 A2 WO 2011093659A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- secondary battery
- type secondary
- active material
- electrode
- cable
- Prior art date
Links
- 239000003792 electrolyte Substances 0.000 claims abstract description 28
- 150000002500 ions Chemical class 0.000 claims abstract description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 32
- 239000011149 active material Substances 0.000 claims description 21
- 229910052759 nickel Inorganic materials 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 229920001940 conductive polymer Polymers 0.000 claims description 15
- 229910052719 titanium Inorganic materials 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 14
- 150000002739 metals Chemical class 0.000 claims description 12
- 239000011253 protective coating Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 8
- 239000007773 negative electrode material Substances 0.000 claims description 8
- 229920001197 polyacetylene Polymers 0.000 claims description 8
- 229920000767 polyaniline Polymers 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 8
- 229920000128 polypyrrole Polymers 0.000 claims description 8
- 229920000123 polythiophene Polymers 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000007774 positive electrode material Substances 0.000 claims description 7
- -1 Aluminum-cadmium Chemical compound 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 6
- 229920002873 Polyethylenimine Polymers 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical group [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- 229910003002 lithium salt Inorganic materials 0.000 claims description 6
- 159000000002 lithium salts Chemical class 0.000 claims description 6
- 239000005518 polymer electrolyte Substances 0.000 claims description 6
- 229920001451 polypropylene glycol Polymers 0.000 claims description 6
- 239000011118 polyvinyl acetate Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 229910000925 Cd alloy Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 229910010238 LiAlCl 4 Inorganic materials 0.000 claims description 3
- 229910015015 LiAsF 6 Inorganic materials 0.000 claims description 3
- 229910015044 LiB Inorganic materials 0.000 claims description 3
- 229910013063 LiBF 4 Inorganic materials 0.000 claims description 3
- 229910013684 LiClO 4 Inorganic materials 0.000 claims description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 claims description 3
- 229910011281 LiCoPO 4 Inorganic materials 0.000 claims description 3
- 229910010707 LiFePO 4 Inorganic materials 0.000 claims description 3
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 claims description 3
- 229910013716 LiNi Inorganic materials 0.000 claims description 3
- 229910013210 LiNiMnCoO Inorganic materials 0.000 claims description 3
- 229910013290 LiNiO 2 Inorganic materials 0.000 claims description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 claims description 3
- 229910012513 LiSbF 6 Inorganic materials 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- 239000003575 carbonaceous material Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000007784 solid electrolyte Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- BEKPOUATRPPTLV-UHFFFAOYSA-N [Li].BCl Chemical compound [Li].BCl BEKPOUATRPPTLV-UHFFFAOYSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 239000006182 cathode active material Substances 0.000 claims description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 239000006183 anode active material Substances 0.000 abstract description 2
- 230000037361 pathway Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910005813 NiMH Inorganic materials 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
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- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a cable type secondary battery free of deformation.
- a secondary battery is a device that converts external electrical energy into chemical energy and 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 type of secondary battery that is easily deformed.
- Korean Patent Laid-Open Publication No. 2005-0099903 discloses a thread-type variable battery composed of an internal electrode, an electrolyte, and an external electrode, but has one negative electrode and a positive electrode and a poor capacity balance.
- Korean Patent No. 0444911 discloses a linear battery composed of a plurality of negative electrodes and a positive electrode having a separator interposed between a negative electrode and a positive electrode. It discloses, but does not have a configuration of the external electrode and the internal electrode.
- an object of the present invention is to provide a secondary battery having a novel linear structure that is easily deformed and can maintain stability and excellent performance of the secondary battery.
- a cable type secondary battery includes an internal electrode having a horizontal cross-section having a predetermined shape and having two or more negative electrodes arranged in parallel on an outer surface of an electrolyte layer extending in a longitudinal direction and serving as a passage of ions; An external electrode serving as an anode including a cathode active material layer filled around the inner electrode; And a protective coating disposed around the external electrode.
- the cable type secondary battery may include: an internal electrode having a horizontal cross-section having a predetermined shape and having two or more anodes arranged in parallel on an outer surface of an electrolyte layer extending in a longitudinal direction and serving as a passage of ions; An external electrode that is a negative electrode including a negative electrode active material layer filled to surround the internal electrode; And a protective coating disposed around the external electrode.
- the cross section of the cathode or anode is circular or polygonal, circular is a geometrically perfectly symmetrical circular and asymmetrical oval structure, and polygons may be triangular, square, pentagonal or hexagonal.
- the negative electrode or the positive electrode has an active material layer on the current collector and the outer surface of the current collector.
- the current collector is a surface treated with carbon, nickel, titanium, silver on the surface of stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel, vision treated with aluminum-cadmium alloy, conductive material
- a conductive polymer or a conductive polymer may be polyacetylene, polyaniline, polypyrrole, polythiophene and polysulfuride, ITO (Indum Thin Oxide), silver, palladium, nickel and copper
- the conductive polymer may be polyacetylene, polyaniline, polypyrrole, Polythiophene, polysulfurite, and the like can be used.
- the active material layer is a carbonaceous material as the negative electrode active material layer; Lithium-containing titanium composite oxide (LTO); Metals (Me) which are Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe; Alloys composed of the metals (Me); Oxides of the metals (Me) (MeOx); And a composite of the metals (Me) and carbon, and a positive electrode active material layer include 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 ( M 1 and M 2 are each independently selected from the group consisting of Al, Ni, Co, Fe, Mn, V, Cr, Ti, W, Ta, Mg and Mo, and x, y and z are oxide compositions independently of each other. As the atomic fraction of the elements, 0 ⁇ x ⁇
- the electrolyte layer may be a gel polymer electrolyte using PEO, PVdF, PMMA, PAN or PVAC, or a solid polymer electrolyte using PEO, PPO (polypropylene oxide), PEI (polyethylene imine), PES (polyethyle sulphide) or PVAc (polyvinyl acetate).
- PEO polymer electrolyte
- PMMA polymethyl methyle sulphide
- PVAc polyvinyl acetate
- the electrolyte layer may further include a lithium salt.
- Lithium salt is 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, lithium chloroborane, lower aliphatic lithium carbonate, lithium tetraphenylborate, and the like can be used.
- the cable type secondary battery of the present invention is characterized in that one electrode includes a plurality of electrodes therein, and has a linear structure and flexibility at the same time, so that deformation can be applied to various types of portable devices. Do.
- 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 number of internal electrodes is controlled to easily adjust the capacity balance between the internal electrodes and the external electrodes.
- a plurality of internal electrodes may be provided to prevent a disconnection problem due to repeated use.
- by forming an electrolyte layer on the inner electrode to prevent direct contact with the outer electrode it is possible to achieve a high rate characteristic by preventing a short and increasing the relative surface area.
- FIG. 1 is a cross-sectional view of a circular cable type secondary battery according to an embodiment.
- FIG. 2 is a cross-sectional view of an elliptical cable type secondary battery according to an embodiment.
- the cable type secondary battery of the present invention has a horizontal cross section of a predetermined shape and has two or more negative electrodes 10 formed on an outer surface of the electrolyte layer 30 extending in the longitudinal direction and serving as a passage of ions. 11) internal electrodes arranged in parallel; An external electrode which is a positive electrode (20, 21) including a positive electrode active material layer (21) filled surrounding the inner electrode; And a protective coating 40 disposed around the external electrode.
- the cable type secondary battery according to the present invention has a horizontal cross section of a predetermined shape and has two or more anodes 10 and 11 arranged in parallel on an outer surface of the electrolyte layer 30 extending in the longitudinal direction and serving as an ion passage. electrode; An external electrode which is a cathode including an anode active material layer 21 filled around the inner electrode; And a protective coating 40 disposed around the external electrode.
- 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 cable-type secondary battery of the present invention has a horizontal cross section of a predetermined shape, has a linear structure elongated in the longitudinal direction with respect to the horizontal cross section, and has flexibility so that deformation is free.
- the cable type secondary battery of FIG. 1 has a circular structure of perfect symmetry, and the cable type secondary battery of FIG.
- the present invention includes a plurality of cathodes 10 and 11 or electrolytes 10 and 11 having an electrolyte layer 30 and an external electrode 20 and 21 serving as a pipe or a cathode.
- the positive electrode has a structure in which the active materials 11 and 21 are coated on the current collectors 10 and 20, but the current collector is not essential when the active material itself serves as the current collector.
- the cross section of the cathode and anode may be circular or polygonal, which is a geometrically perfectly symmetrical circular and asymmetrical oval structure.
- the polygon is not particularly limited as long as it is not a two-dimensional sheet-like structure, and a non-limiting example of the polygonal structure may be a triangle, a square, a pentagon, or a hexagon.
- the internal electrode has two or more parallelly arranged cathodes 10, 11 or anodes 10, 11, in which not only a plurality of cathodes or anodes are arranged side by side in a straight line, but also a plurality of cathodes or anodes are twisted together. It also includes the case.
- the cable type secondary battery of FIG. 1 has internal electrodes of four negative electrodes or positive electrodes, and the cable type secondary battery of FIG. 2 has three internal electrodes of three negative electrodes or positive electrodes.
- the surface area in contact with the counter electrode is increased to have a high battery rate and to secure excellent battery performance.
- the electrode may be disconnected due to repeated use. When a plurality of electrodes are used, the operation of the battery becomes possible even if the electrode is disconnected.
- a negative electrode active material having a smaller capacity per volume than the positive electrode active material more negative electrode active materials must be used than the positive electrode active material used to maintain battery capacity balance. The capacity balance between the external electrode and the external electrode can be easily adjusted.
- the negative electrode and the positive electrode of the present invention include the current collectors 10 and 20 and the active material layers 11 and 21 on the outer surface of the current collector.
- the active materials 11 and 21 are applied to the surfaces of the current collectors 10 and 20, and serve to move ions through the current collectors, and the movement of these ions occludes the ions from the electrolyte layer 30 and the electrolyte layer.
- the current collectors 10 and 20 are surface treated with carbon, nickel, titanium or silver on the surface of stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel, surface treated with aluminum-cadmium alloy and conductive material. It is preferable to use a non-conductive polymer, or a conductive polymer.
- 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.
- the cable-type secondary battery of the present invention can 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 polymer current collector is used in place of the metal current collector, light weight of the battery can be achieved.
- Such conductive materials may be polyacetylene, polyaniline, polypyrrole, polythiophene and polysulfuride, ITO (Indum Thin Oxide), silver, palladium, nickel and copper, and the conductive polymer may be polyacetylene, polyaniline, polypyrrole, Polythiophene, polysulfurite, and the like can be used.
- the non-conductive polymer used for the current collector is not particularly limited in kind.
- Non-limiting examples of the negative electrode active material layer a carbonaceous material; Lithium-containing titanium composite oxide (LTO); Metals (Me) which are Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe; Alloys composed of the metals (Me); Oxides of the metals (Me) (MeOx); And a complex of the metals (Me) and carbon; Etc. can be used.
- Lithium-containing titanium composite oxide LTO
- Metals (Me) which are Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe
- Etc. can 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.
- the electrolyte layer 30 is formed on the cathodes 10 and 11 or the anodes 10 and 11 of the internal electrode to prevent direct contact with the external electrodes 20 and 21. Therefore, the short circuit can be prevented, the surface area of the internal electrode is relatively increased, and the contact area between the internal electrode and the external electrode is increased, thereby achieving high battery rate characteristics.
- the electrolyte layer serving as a passage for these ions may be a gel polymer electrolyte using PEO, PVdF, PMMA, PAN, or PVAC or PEO, polypropylene oxide (PPO), polyethylene imine (PEI), polyethyle sulphide (PES), or polyvinyl acetate (PVAc).
- 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 30 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 .
- Protective coating 40 of the present invention is formed on the outer surface of the external electrodes 20, 21 as an insulator to protect the electrode against moisture and external impact in the air.
- a conventional polymer resin may be used, and for example, PVC, HDPE, or epoxy resin may be used.
- the active materials 11 and 21 may be coated on the current collectors 10 and 20.
- a general coating method may be used as the coating method, and specifically, electroplating or positive electrode.
- An oxidation oxidation process can be used, and it is preferable to manufacture an electrode slurry containing an active material by extrusion coating through an extruder.
- the prepared cathodes 10 and 11 or anodes 10 and 11 are used as internal electrodes and the outer surface of the internal electrodes is coated with an 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.
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Abstract
Description
Claims (17)
- 소정 형상의 수평 단면을 가지며, 길이 방향으로 연장되고 이온의 통로가 되는 전해질층이 외면에 형성된 2 이상의 음극이 평행하게 배치된 내부전극;상기 내부전극을 둘러싸며 충진된 양극 활물질층을 포함하는 양극인 외부전극; 및상기 외부전극의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 소정 형상의 수평 단면을 가지며, 길이 방향으로 연장되고 이온의 통로가 되는 전해질층이 외면에 형성된 2 이상의 양극이 평행하게 배치된 내부전극;상기 내부전극을 둘러싸며 충진된 음극 활물질층을 포함하는 음극인 외부전극; 및상기 외부전극의 둘레에 배치되는 보호피복을 포함하는 케이블형 이차전지.
- 제 1항 또는 제 2항에 있어서,상기 음극의 단면은 원형 또는 다각형인 것을 특징으로 하는 케이블형 이차전지.
- 제 1항 또는 제 2항에 있어서,상기 양극의 단면은 원형 또는 다각형인 것을 특징으로 하는 케이블형 이차전지.
- 제 1항 또는 제 2항에 있어서,상기 음극은 집전체 및 상기 집전체의 외면에 음극 활물질층을 구비한 것을 특징으로 하는 케이블형 이차전지.
- 제 5항에 있어서,상기 집전체는 스테인리스스틸, 알루미늄, 니켈, 티탄, 소성탄소, 구리; 스테인리스스틸의 표면에 카본, 니켈, 티탄, 은으로 표면처리한 것; 알루미늄-카드뮴합금; 도전재로 표면처리된 비전도성 고분자; 또는 전도성 고분자;로 제조된 것을 특징으로 하는 케이블형 이차전지.
- 제 6항에 있어서,상기 도전재는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드, ITO(Indum Thin Oxide), 은, 팔라듐, 니켈 및 구리 중에서 선택된 1종 또는 2종 이상의 혼합물인 것을 특징으로 하는 케이블형 이차전지.
- 제 6항에 있어서,상기 전도성 고분자는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 고분자인 것을 특징으로 하는 케이블형 이차전지.
- 제 5항에 있어서,상기 음극 활물질층은 탄소질재료; 리튬 함유 티타늄 복합 산화물(LTO); Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe인 금속류(Me); 상기 금속류(Me)로 구성된 합금류; 상기 금속류(Me)의 산화물(MeOx); 및 상기 금속류(Me)와 탄소와의 복합체;로 이루어진 군으로부터 선택된 어느 하나의 활물질 입자 또는 이들 중 2종 이상의 혼합물을 포함하는 활물질로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 제 1항에 또는 제 2항에 있어서,상기 양극은 집전체 및 상기 집전체의 내면에 양극 활물질층을 구비한 것을 특징으로 하는 케이블형 이차전지.
- 제 10항에 있어서,상기 집전체는 스테인리스스틸, 알루미늄, 니켈, 티탄, 소성탄소, 구리; 스테인리스스틸의 표면에 카본, 니켈, 티탄, 은으로 표면처리한 것; 알루미늄-카드뮴합금; 도전재로 표면처리된 비전도성 고분자; 또는 전도성 고분자;로 제조된 것을 특징으로 하는 케이블형 이차전지.
- 제 11항에 있어서,상기 도전재는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드, ITO(Indum Thin Oxide), 은, 팔라듐, 니켈 및 구리 중에서 선택된 1종 또는 2종 이상의 혼합물인 것을 특징으로 하는 케이블형 이차전지.
- 제 11항에 있어서,상기 전도성 고분자는 폴리아세틸렌, 폴리아닐린, 폴리피롤, 폴리티오펜 및 폴리설퍼니트리드 중에서 선택된 1종의 화합물 또는 2종 이상의 혼합물인 고분자인 것을 특징으로 하는 케이블형 이차전지.
- 제 10항에 있어서,상기 양극 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 혼합물을 포함하는 활물질로 이루어진 것을 특징으로 하는 케이블형 이차전지.
- 제 1항 또는 제 2항에 있어서,상기 전해질층은 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 1항 또는 제 2항에 있어서,상기 전해질층은 리튬염을 더 포함하는 것을 특징으로 하는 케이블형 이차전지.
- 제 16항에 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.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP11737298.7A EP2533338B1 (en) | 2010-02-01 | 2011-01-27 | Cable type rechargeable battery |
JP2012549958A JP5465792B2 (ja) | 2010-02-01 | 2011-01-27 | ケーブル型二次電池 |
CN2011800049296A CN102652378A (zh) | 2010-02-01 | 2011-01-27 | 线缆型二次电池 |
US13/291,407 US9236629B2 (en) | 2010-02-01 | 2011-11-08 | Cable-type secondary battery |
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KR10-2010-0009049 | 2010-02-01 | ||
KR1020100009049A KR101279409B1 (ko) | 2010-02-01 | 2010-02-01 | 케이블형 이차전지 |
Related Child Applications (1)
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US13/291,407 Continuation US9236629B2 (en) | 2010-02-01 | 2011-11-08 | Cable-type secondary battery |
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WO2011093659A2 true WO2011093659A2 (ko) | 2011-08-04 |
WO2011093659A3 WO2011093659A3 (ko) | 2012-01-05 |
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US (1) | US9236629B2 (ko) |
EP (1) | EP2533338B1 (ko) |
JP (1) | JP5465792B2 (ko) |
KR (1) | KR101279409B1 (ko) |
CN (2) | CN102652378A (ko) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103891011A (zh) * | 2011-10-25 | 2014-06-25 | 株式会社Lg化学 | 二次电池用负极和具有所述负极的二次电池 |
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CN103891011A (zh) * | 2011-10-25 | 2014-06-25 | 株式会社Lg化学 | 二次电池用负极和具有所述负极的二次电池 |
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US20120058376A1 (en) | 2012-03-08 |
KR101279409B1 (ko) | 2013-06-27 |
JP5465792B2 (ja) | 2014-04-09 |
CN106910936B (zh) | 2020-02-28 |
CN106910936A (zh) | 2017-06-30 |
EP2533338A2 (en) | 2012-12-12 |
KR20110089583A (ko) | 2011-08-09 |
CN102652378A (zh) | 2012-08-29 |
EP2533338A4 (en) | 2014-02-19 |
EP2533338B1 (en) | 2016-12-28 |
JP2013517611A (ja) | 2013-05-16 |
WO2011093659A3 (ko) | 2012-01-05 |
US9236629B2 (en) | 2016-01-12 |
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