WO2016099229A1 - 혼합 양극활물질, 이를 포함하는 양극 및 이차전지 - Google Patents
혼합 양극활물질, 이를 포함하는 양극 및 이차전지 Download PDFInfo
- Publication number
- WO2016099229A1 WO2016099229A1 PCT/KR2015/014041 KR2015014041W WO2016099229A1 WO 2016099229 A1 WO2016099229 A1 WO 2016099229A1 KR 2015014041 W KR2015014041 W KR 2015014041W WO 2016099229 A1 WO2016099229 A1 WO 2016099229A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- active material
- positive electrode
- oxide
- cathode active
- secondary battery
- Prior art date
Links
Images
Classifications
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- 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
-
- 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
-
- 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
-
- 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
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/36—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
-
- 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
- H01M4/36—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
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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
- H01M4/36—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
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- 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
- H01M4/36—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
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/626—Metals
-
- 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
-
- 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 mixed cathode active material, a cathode and a secondary battery including the same, and more particularly, to a cathode active material mixed with different materials, a cathode and a secondary battery including the same.
- Lithium secondary batteries which have increased in recent years, mainly use lithium-containing cobalt oxide (LiCoO 2 ) as a positive electrode active material, and lithium-containing manganese oxides such as LiMnO 2 having a layered crystal structure and LiMn 2 O 4 having a spinel crystal structure. And the use of lithium-containing nickel oxide (LiNiO 2 ) are also contemplated.
- LiCoO 2 lithium-containing cobalt oxide
- manganese oxides such as LiMnO 2 having a layered crystal structure and LiMn 2 O 4 having a spinel crystal structure.
- LiNiO 2 lithium-containing nickel oxide
- lithium-containing cobalt oxide (LiCoO 2 ) is widely used because of its excellent physical properties such as excellent cycle characteristics, but is relatively expensive, and has a low charge and discharge current of about 150 mAh / g and a voltage of 4.3V or more.
- There are various problems such as unstable crystal structure, reaction with electrolyte, and risk of ignition.
- the secondary battery composed of such a positive electrode material exhibits a weak stability at high voltage, or there is a limit to the application to the mass production process.
- LiMnO 2 and LiMn 2 O 4 have the advantage of using abundant resources and environmentally friendly manganese as raw materials, attracting much attention as a cathode active material to replace LiCoO 2 , but these lithium manganese Oxides have the disadvantage of small capacity and poor cycle characteristics.
- the lithium nickel oxide such as LiNiO 2 has a lower discharge capacity than the cobalt oxide and has a high discharge capacity when charged at 4.3 V.
- the reversible capacity of the doped LiNiO 2 has a capacity of LiCoO 2 (about 165 mAh / g). ) To about 200 mAh / g.
- LiNiO 2 -based oxides have a problem such as a sudden phase transition of the crystal structure according to the volume change accompanying the charge-discharge cycle, excess gas is generated during the cycle.
- lithium transition metal oxide in which a part of nickel is replaced with another transition metal such as manganese and cobalt has been proposed.
- these metal-substituted nickel-based lithium transition metal oxides have advantages in that they have excellent cycle characteristics and capacity characteristics, but even in this case, the cycle characteristics deteriorate rapidly during long-term use, and safety problems at high temperatures are still not solved. have.
- the present invention is to solve the above problems, and provides a mixed positive electrode active material that satisfies the output characteristics at high voltage and the life characteristics at high temperature at the same time, a positive electrode and a secondary battery comprising the same.
- a mixed cathode active material of the following embodiments is provided.
- Embodiment 1 includes a large particle size positive electrode active material having an average diameter of 10 ⁇ m or more and a small particle size positive electrode active material having an average diameter of 5 ⁇ m or less, wherein the large size positive electrode active material and the small particle size positive electrode active material are each of lithium triborate and metal oxide, respectively.
- Embodiment 2 is the metal oxide of Embodiment 1, may be at least one selected from the group consisting of magnesium oxide, aluminum oxide, niobium oxide, titanium oxide and tungsten oxide.
- Embodiment 3 is the weight ratio of the large particle size positive electrode active material and the small particle size of the positive electrode active material in any one of embodiment 1 or embodiment 2 may be 5: 5 to 8: 2.
- Embodiment 4 may be a lithium, nickel, manganese, cobalt composite oxide (NMC) of any one of embodiments 1 to 3, wherein at least one of the large-size cathode active material or small particle cathode active material.
- NMC cobalt composite oxide
- Embodiment 5 is the compound of any one of embodiments 1 to 4, wherein the lithium nickel manganese cobalt composite oxide is Li (1 + ⁇ ) Mn x Ni y Co (1-xyz) M z O 2 (M is at least one element selected from the group consisting of Ti, Zr, Nb, Mo, W, Al, Si, Ga, Ge and Sn, -0.15 ⁇ ⁇ 0.15, 0.1 ⁇ x ⁇ 0.5, 0.6 ⁇ x + y + z ⁇ 1.0, where 0 ⁇ z ⁇ 0.1).
- M is at least one element selected from the group consisting of Ti, Zr, Nb, Mo, W, Al, Si, Ga, Ge and Sn, -0.15 ⁇ ⁇ 0.15, 0.1 ⁇ x ⁇ 0.5, 0.6 ⁇ x + y + z ⁇ 1.0, where 0 ⁇ z ⁇ 0.1).
- an anode of the following embodiments is provided.
- Embodiment 6 relates to a positive electrode having an electrode current collector and a positive electrode active material layer formed on at least one surface of the electrode current collector and including the aforementioned mixed positive electrode active material, a conductive material, and a binder.
- Embodiment 7 is the method of Embodiment 6, wherein the conductive material is graphite; Select from the group consisting of carbon black, acetylene black, ketjen black, channel black, furnace black, lamp black, summer black, carbon fiber, metal fiber, carbon fluoride, aluminum powder, nickel powder, zinc oxide, potassium titanate and titanium oxide At least one of which may be.
- Embodiment 8 is the method according to any one of embodiments 6 or 7, wherein the binder is polyvinylidene fluoride, vinylidene fluoride-hexafluoropropylene copolymer (PVDF-co-HFP), polyvinyl alcohol, carboxymethyl Cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, polytetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene terpolymer (EPDM), liquor It may be at least one selected from the group consisting of fonned EPDM, styrene butadiene rubber (SBR), fluorine rubber, polyacrylonitrile and polymethyl methacrylate.
- the binder is polyvinylidene fluoride, vinylidene fluoride-hexafluoropropylene copolymer (PVDF-co-HFP), polyvinyl alcohol, carboxymethyl Cell
- Embodiment 9 is provided with a secondary battery including the positive electrode of Embodiments 6 to 8.
- Embodiment 10 is the embodiment 9, wherein the secondary battery may be a lithium secondary battery.
- Embodiment 11 may be any one of embodiment 9 or 10, wherein the secondary battery has a driving voltage of 4.25 or more.
- the present invention has the advantage that it is possible to provide a positive electrode having excellent rolling density by mixing two kinds of positive electrode active material having a different average diameter.
- FIG. 1 is a graph showing changes in recovery capacity and resistance in Example 1 and Comparative Examples 1 and 2.
- FIG. 1 is a graph showing changes in recovery capacity and resistance in Example 1 and Comparative Examples 1 and 2.
- the mixed cathode active material according to an embodiment of the present invention includes two kinds of cathode active materials having different diameters, and preferably, a large diameter cathode active material having an average diameter of 10 ⁇ m or more and a cathode active material having an average diameter of 5 ⁇ m or less may be mixed. have.
- the small particle size positive electrode active material may fill the voids between the large particle size of the positive electrode active material, so that the coating can be coated with a high rolling density when coating the current collector, and ultimately excellent energy A positive electrode and a battery having a density can be produced.
- any material capable of intercalation-deintercalation of ions during charge and discharge can be used without limitation, and preferably lithium, nickel, manganese, Cobalt complex oxide (NMC), more specifically Li (1 + ⁇ ) Mn x Ni y Co (1-xyz) M z O 2 (M is at least one element selected from the group consisting of Ti, Zr, Nb, Mo, W, Al, Si, Ga, Ge and Sn, -0.15 ⁇ ⁇ 0.15, 0.1 ⁇ x ⁇ 0.5, 0.6 ⁇ x + y + z ⁇ 1.0, where 0 ⁇ z ⁇ 0.1).
- NMC Cobalt complex oxide
- the large diameter positive electrode active material has an average diameter of 10 ⁇ m or more, preferably 10 ⁇ m to 20 ⁇ m, and when the average diameter is less than 10 ⁇ m, there is a problem that small pores are difficult to include small particles.
- the small diameter positive electrode active material has an average diameter of 5 ⁇ m or less, preferably 1 ⁇ m to 5 ⁇ m, more preferably 3 ⁇ m to 5 ⁇ m, in which case the average diameter exceeds 5 ⁇ m
- the average diameter exceeds 5 ⁇ m
- Mixed cathode active material is a large-size cathode active material and small particle cathode active material is a form in which lithium triborate (Lithium triborate or LBO, Lithium Boran Oxide) and metal oxides are coated with different materials.
- lithium triborate Lithium triborate or LBO, Lithium Boran Oxide
- the lithium triborate-coated large-size cathode active material-metal oxide-coated small particle cathode active material or lithium triborate-coated small-size cathode active material-metal oxide-coated large particle size positive electrode active material preferably
- the lithium triborate may be a small particle size positive electrode active material coated with a large-size positive electrode active material coated with a metal oxide.
- the metal oxide is coated on the positive electrode active material and excellent in stability at high voltage can be used without limitation, non-limiting examples of Nb, Ti, Zn, in addition to the oxide of a relatively light metal such as Mg, Al, B, Si, etc.
- Oxides of transition metals such as Sn, Zr, W, and the like, and lanthanum series metal oxides such as Ce, and preferably Mg, Al, Nb, Ti, and W.
- the positive electrode active material according to an embodiment of the present invention may be used by mixing a large diameter positive electrode active material and a small particle size positive electrode active material in a weight ratio of 5: 5 to 8: 2, preferably in a weight ratio of 6: 4 to 7: 3. It can be mixed and used.
- the weight ratio of the large particle size active material is less than 50wt%, there is a problem in reducing the packing density with the small particle size because the number of pores formed by the large particle size is small, and when the weight ratio exceeds 80wt%, there is a problem in that the output improvement effect of the small particle size is insufficient.
- the positive electrode according to another embodiment of the present invention may include an electrode current collector and a positive electrode active material formed on at least one surface of the electrode current collector and including the above-described mixed positive electrode active material, a conductive agent, and a binder.
- the electrode current collector is not particularly limited as long as it has high conductivity without causing chemical change in the art, and non-limiting examples include stainless steel, aluminum, nickel, titanium, calcined carbon, or aluminum or stainless steel.
- the surface-treated with carbon, nickel, titanium, silver, etc. can be used for the surface.
- the electrode current collector may form fine irregularities on its surface to increase the adhesion of the positive electrode active material, and may be in various forms such as a film, a sheet, a foil, a net, a porous body, a foam, a nonwoven fabric, and 3 to 500. May be a thickness of ⁇ m.
- the conductive material applicable to the present invention is not particularly limited as long as it has conductivity without causing chemical change in the art, but is not limited to graphite such as non-limiting natural graphite and artificial graphite; Carbon blacks such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, and summer black; Conductive fibers such as carbon fibers and metal fibers; Metal powders such as carbon fluoride powder, aluminum powder and nickel powder; Conductive whiskeys such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials, such as a polyphenylene derivative, etc.
- graphite such as non-limiting natural graphite and artificial graphite
- Carbon blacks such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, and summer black
- Conductive fibers such as carbon fibers and metal fibers
- Metal powders such as carbon fluoride powder, aluminum powder and nickel powder
- Conductive whiskeys such as zinc oxide and
- a conductive material is graphite; Select from the group consisting of carbon black, acetylene black, ketjen black, channel black, furnace black, lamp black, summer black, carbon fiber, metal fiber, carbon fluoride, aluminum powder, nickel powder, zinc oxide, potassium titanate and titanium oxide It is at least one, and is usually added in an amount of 1 to 20% by weight based on the total weight of the mixture including the mixed cathode active material.
- the binder applicable to the present invention may be any component that assists in the bonding of the mixed cathode active material and the conductive material and the bonding to the electrode current collector, and may be used without limitation.
- PVDF-co-HFP polyvinylidene fluoride and vinylidene fluoride-hexafluoro Low Propylene Copolymer
- Polyvinyl Alcohol Polyvinyl Alcohol, Carboxymethyl Cellulose (CMC), Starch, Hydroxypropyl Cellulose, Regenerated Cellulose, Polyvinylpyrrolidone, Polytetrafluoroethylene
- EPDM ethylene-propylene-diene terpolymer
- SBR styrene butadiene rubber
- fluororubber polyacrylonitrile and polymethylmethacrylate It is usually added in an amount of 1 to 20% by weight based on the total weight of the mixture including the positive electrode
- the positive electrode according to an embodiment of the present invention may optionally further include a filler, and the filler applicable to the present invention is not particularly limited as long as it is a fibrous material without causing chemical change in the battery.
- Typical examples include olefinic polymers such as polyethylene and polypropylene; Fibrous materials, such as glass fiber and carbon fiber, are used.
- a secondary battery including the above-described positive electrode is provided, wherein the secondary battery is preferably a lithium secondary battery, wherein the secondary battery may have a driving voltage of 4.25 or more.
- the lithium secondary battery may be composed of the positive electrode, the negative electrode, the separator, and the lithium salt-containing nonaqueous electrolyte. Other components of the lithium secondary battery according to the present invention except for the positive electrode will be described below.
- the negative electrode is manufactured by applying and drying a negative electrode material on the negative electrode current collector, and if necessary, the components as described above may be further included.
- the negative electrode material may be, for example, carbon such as hardly graphitized carbon or graphite carbon; LixFe 2 O 3 (0 ⁇ x ⁇ 1), Li x WO 2 (0 ⁇ x ⁇ 1), Sn x Me 1 - x Me ' y O z (Me: Mn, Fe, Pb, Ge; Me': Al Metal complex oxides such as B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen, 0 ⁇ x ⁇ 1; 1 ⁇ y ⁇ 3; 1 ⁇ z ⁇ 8); Lithium metal; Lithium alloys; Silicon-based alloys; Tin-based alloys; Metal oxides such as SnO, SnO 2 , PbO, and the like; Conductive polymers such as polyacetylene; Li-Co-Ni-based materials and the like can be used.
- the negative electrode current collector is generally made to a thickness of 3 to 500 ⁇ m.
- a negative electrode current collector is not particularly limited as long as it has conductivity without causing chemical change in the battery.
- the surface of copper, stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel Surface treated with carbon, nickel, titanium, silver, or the like, aluminum-cadmium alloy, or the like can be used.
- fine concavities and convexities may be formed on the surface to enhance the bonding strength of the negative electrode active material, and may be used in various forms such as a film, a sheet, a foil, a net, a porous body, a foam, and a nonwoven fabric.
- the separator is interposed between the anode and the cathode, and an insulating thin film having high ion permeability and mechanical strength is used.
- the pore diameter of the separator is generally from 0.01 to 10 ⁇ m ⁇ m, thickness is generally 5 ⁇ 300 ⁇ m.
- a separator for example, olefin polymers such as chemical resistance and hydrophobic polypropylene; Sheets or non-woven fabrics made of glass fibers or polyethylene are used.
- a solid electrolyte such as a polymer
- the solid electrolyte may also serve as a separator.
- the lithium-containing non-aqueous electrolyte consists of a nonaqueous electrolyte and a lithium salt.
- a nonaqueous electrolyte a nonaqueous electrolyte, a solid electrolyte, an inorganic solid electrolyte, and the like are used.
- organic solid electrolytes examples include polyethylene derivatives, polyethylene oxide derivatives, polypropylene oxide derivatives, phosphate ester polymers, polyagitation lysine, polyester sulfides, polyvinyl alcohol, polyvinylidene fluoride, Polymers containing ionic dissociating groups and the like can be used.
- Examples of the inorganic solid electrolyte include Li 3 N, LiI, Li 5 NI 2 , Li 3 N-LiI-LiOH, LiSiO 4 , LiSiO 4 -LiI-LiOH, Li 2 SiS 3 , Li 4 SiO 4 , Nitrides, halides, sulfates and the like of Li, such as Li 4 SiO 4 -LiI-LiOH, Li 3 PO 4 -Li 2 S-SiS 2 , and the like, may be used.
- the lithium salt is a material that is good to dissolve in the non-aqueous electrolyte, for example, 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, chloroborane lithium, lower aliphatic lithium carbonate, lithium phenyl borate, imide and the like can be used.
- pyridine triethyl phosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, hexaphosphate triamide, etc.
- a halogen-containing solvent such as carbon tetrachloride or ethylene trifluoride may be further included, and carbon dioxide gas may be further included to improve high temperature storage characteristics, and FEC (Fluoro-Ethylene) may be further included.
- Carbonate), PRS (Propene Sultone), FPC (Fluoro-Propylene Carbonate) may be further included.
- Cathode active material LiMnO ⁇ 2NiO ⁇ 6CoO 2 cathode active material with an average diameter of 5 ⁇ m coated with 70 wt% and lithium triborate (LBO) 30 wt% of the mixed positive electrode active material was prepared, and the mixed positive electrode active material, conductive carbon, and binder were mixed at a weight ratio of 92.5: 3.5: 4, respectively, and coated on an electrode current collector to prepare a positive electrode.
- the separator was inserted into the aluminum pouch case and sealed to prepare a secondary battery.
- Cathode active material A secondary battery was manufactured in the same manner as in Example 1, except that 30 wt% was mixed to use a mixed cathode active material.
- a cathode active material was prepared using a cathode active material alone, and a conductive carbon and a binder were mixed at a weight ratio of 92.5: 3.5: 4, respectively, and coated on an electrode current collector to prepare a cathode.
- a separator was inserted between the cathode and the anode prepared as described above.
- the secondary battery was manufactured by sealing with an aluminum pouch case.
- LiMnO ⁇ 2NiO ⁇ 6CoO 2 coated with alumina (Al 2 O 3 ) A secondary battery was manufactured in the same manner as in Comparative Example 1, except that the cathode active material was used alone.
- Table 1 shows the result of measuring the resistance through the voltage drop for 10 seconds against the pulse current at SOC 50.
- the output characteristics are improved than when each is used alone, and the performance at high temperature storage has the same effect as the large particle single use.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
구분 | Rdis@SOC 50 (mΩ) |
실시예 1 | 0.91 |
비교예 1 | 0.97 |
비교예 2 | 0.92 |
구분 | 용량 유지율(%) | 저항 변화율(%) |
실시예 1 | 95.7 | 18 |
비교예 1 | 95.3 | 17 |
비교예 2 | 91.3 | 27 |
Claims (11)
- 평균 직경이 10 ㎛ 이상인 대입경 양극활물질과 평균 직경이 5 ㎛ 이하인 소입경 양극활물질을 포함하고,상기 대입경 양극활물질 및 소입경 양극활물질은 각각 리튬트리보레이트 및 금속 산화물 중 서로 다른 물질로 코팅된 혼합 양극활물질.
- 제1항에 있어서,상기 금속 산화물은 산화마그네슘, 산화알루미늄, 산화니오븀, 산화티탄 및 산화텅스텐으로 이루어진 군에서 선택된 1 종 이상인 것을 특징으로 하는 혼합 양극활물질.
- 제1항에 있어서,상기 대입경 양극활물질 및 소입경 양극활물질의 중량비는 5:5 내지 8:2인 것을 특징으로 하는 혼합 양극활물질.
- 제1항에 있어서,상기 대입경 양극활물질 또는 소입경 양극활물질 중 적어도 어느 하나는 리튬·니켈·망간·코발트 복합 산화물(NMC)인 것을 특징으로 하는 혼합 양극활물질.
- 제4항에 있어서,상기 리튬·니켈·망간·코발트 복합 산화물은 Li(1+δ)MnxNiyCo(1-x-y-z)MzO2 (M은 Ti, Zr, Nb, Mo, W, Al, Si, Ga, Ge 및 Sn으로 이루어지는 군에서 선택되는 적어도 1종의 원소이며, -0.15<δ<0.15, 0.1<x≤0.5, 0.6<x+y+z<1.0, 0≤z≤0.1임)인 것을 특징으로 하는 혼합 양극활물질.
- 전극 집전체; 및상기 전극 집전체의 적어도 일면상에 형성되고, 제1항 내지 제5항 중 어느 한 항의 혼합 양극활물질, 도전재 및 바인더를 포함하는 양극활물질층을 구비하는 양극.
- 제6항에 있어서,상기 도전재는 흑연; 카본블랙, 아세틸렌 블랙, 케첸 블랙, 채널 블랙, 퍼네이스 블랙, 램프 블랙, 서머 블랙, 탄소섬유, 금속섬유, 불화 카본, 알루미늄 분말, 니켈 분말, 산화아연, 티탄산칼륨 및 산화티탄으로 이루어진 군에서 선택되는 적어도 어느 하나인 것을 특징으로 하는 양극.
- 제6항에 있어서,상기 바인더는 폴리불화 비닐리덴, 불화비닐리덴-헥사플루오로프로필렌 코폴리머(PVDF-co-HFP), 폴리비닐알코올, 카르복시메틸셀룰로우즈(CMC), 전분, 히드록시프로필셀룰로우즈, 재생 셀룰로우즈, 폴리비닐피롤리돈, 폴리테트라플루오로에틸렌, 폴리에틸렌, 폴리프로필렌, 에틸렌-프로필렌-디엔 테르 폴리머(EPDM), 술폰화 EPDM, 스티렌 부타디엔 고무(SBR), 불소 고무, 폴리아크릴로니트릴 및 폴리메틸메타크릴레이트로 이루어진 군에서 선택되는 적어도 어느 하나인 것을 특징으로 하는 양극.
- 제6항의 양극을 포함하는 이차전지.
- 제9항에 있어서,상기 이차전지는 리튬 이차전지인 것을 특징으로 하는 이차전지.
- 제9항에 있어서,상기 이차전지는 4.25 이상의 구동 전압을 가지는 것을 특징으로 하는 이차전지.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/517,641 US10199641B2 (en) | 2014-12-19 | 2015-12-21 | Mixed positive electrode active material, positive electrode comprising same, and secondary battery |
CN201580057343.4A CN107078281B (zh) | 2014-12-19 | 2015-12-21 | 混合正极活性材料、包含其的正极和二次电池 |
JP2017517748A JP6559779B2 (ja) | 2014-12-19 | 2015-12-21 | 混合正極活物質、これを含む正極及び二次電池 |
US16/241,208 US10826057B2 (en) | 2014-12-19 | 2019-01-07 | Mixed positive electrode active material, positive electrode comprising same, and secondary battery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140184875A KR101761367B1 (ko) | 2014-12-19 | 2014-12-19 | 혼합 양극활물질, 이를 포함하는 양극 및 이차전지 |
KR10-2014-0184875 | 2014-12-19 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/517,641 A-371-Of-International US10199641B2 (en) | 2014-12-19 | 2015-12-21 | Mixed positive electrode active material, positive electrode comprising same, and secondary battery |
US16/241,208 Continuation-In-Part US10826057B2 (en) | 2014-12-19 | 2019-01-07 | Mixed positive electrode active material, positive electrode comprising same, and secondary battery |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016099229A1 true WO2016099229A1 (ko) | 2016-06-23 |
Family
ID=56127003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2015/014041 WO2016099229A1 (ko) | 2014-12-19 | 2015-12-21 | 혼합 양극활물질, 이를 포함하는 양극 및 이차전지 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10199641B2 (ko) |
JP (2) | JP6559779B2 (ko) |
KR (1) | KR101761367B1 (ko) |
CN (1) | CN107078281B (ko) |
WO (1) | WO2016099229A1 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109251704A (zh) * | 2017-07-13 | 2019-01-22 | 罗伯特·博世有限公司 | 用于电化学储能器的粘合剂组合物 |
EP3486979A4 (en) * | 2017-02-02 | 2019-11-06 | LG Chem, Ltd. | CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND PREPARATION METHOD THEREOF |
JP2021501982A (ja) * | 2017-11-21 | 2021-01-21 | エルジー・ケム・リミテッド | リチウム二次電池用正極材、これを含む正極及びリチウム二次電池 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101761367B1 (ko) * | 2014-12-19 | 2017-07-25 | 주식회사 엘지화학 | 혼합 양극활물질, 이를 포함하는 양극 및 이차전지 |
KR102172154B1 (ko) * | 2016-10-19 | 2020-10-30 | 주식회사 엘지화학 | 이차전지용 양극 및 이를 포함하는 이차전지 |
WO2018105791A1 (ko) * | 2016-12-09 | 2018-06-14 | 주식회사 엘 앤 에프 | 리튬 이차 전지용 양극 활물질, 이의 제조방법 및 이를 포함하는 리튬 이차 전지 |
KR101986163B1 (ko) * | 2017-02-27 | 2019-06-05 | 한남대학교 산학협력단 | 망간을 함유하는 전이금속 복합화합물 전구체 및 이를 포함하여 제조된 이차전지용 양극 활물질 |
KR101986165B1 (ko) * | 2017-02-27 | 2019-06-05 | 한남대학교 산학협력단 | 전이금속 복합화합물 전구체 및 이로부터 제조된 이차전지용 양극 활물질 |
CN107706373B (zh) * | 2017-09-19 | 2020-05-22 | 合肥国轩高科动力能源有限公司 | 一种锂离子电池高镍三元材料及其制备方法 |
CN107785550B (zh) * | 2017-10-16 | 2021-11-05 | 桑顿新能源科技(长沙)有限公司 | 一种高容量高压实密度高镍正极材料的制备方法 |
KR102226429B1 (ko) | 2018-02-19 | 2021-03-10 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 양극 활물질, 이를 포함하는 양극 및 이를 포함하는 리튬 이차 전지 |
KR102520065B1 (ko) | 2018-09-12 | 2023-04-11 | 주식회사 엘지에너지솔루션 | 이차전지용 양극재, 그 제조방법 및 이를 포함하는 리튬 이차전지 |
KR102657451B1 (ko) * | 2018-10-19 | 2024-04-16 | 주식회사 엘지에너지솔루션 | 이차전지용 양극재 및 이를 포함하는 리튬 이차전지 |
CN109411733A (zh) * | 2018-11-06 | 2019-03-01 | 烟台卓能锂电池有限公司 | 复合包覆改性的锂离子电池正极材料及其制备方法、正极和锂离子电池 |
KR102142776B1 (ko) * | 2018-11-14 | 2020-08-07 | 인천대학교 산학협력단 | 리튬 테트라메틸실릴보레이트 코팅층을 포함하는 리튬 이차전지용 양극 활물질 및 이의 제조방법 |
KR102453274B1 (ko) | 2018-12-10 | 2022-10-11 | 주식회사 엘지에너지솔루션 | 리튬이차전지용 양극재, 이를 포함하는 양극 및 리튬이차전지 |
WO2021029650A1 (ko) | 2019-08-12 | 2021-02-18 | 주식회사 엘지화학 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
JPWO2021039751A1 (ko) * | 2019-08-30 | 2021-03-04 | ||
JP7357499B2 (ja) * | 2019-09-26 | 2023-10-06 | パナソニックホールディングス株式会社 | 非水電解質二次電池用正極活物質、及び非水電解質二次電池 |
KR20210111950A (ko) | 2020-03-03 | 2021-09-14 | 삼성에스디아이 주식회사 | 전고체 이차전지용 양극 및 이를 포함하는 전고체이차전지 |
KR20210111951A (ko) | 2020-03-03 | 2021-09-14 | 삼성에스디아이 주식회사 | 전고체이차전지용 양극 및 이를 포함하는 전고체이차전지 |
KR102397756B1 (ko) * | 2020-09-02 | 2022-05-13 | 주식회사 에코프로비엠 | 양극 활물질 및 이를 포함하는 리튬 이차전지 |
KR20220074149A (ko) * | 2020-11-27 | 2022-06-03 | 주식회사 엘지에너지솔루션 | 리튬 이차전지의 제조 방법 및 이에 의하여 제조된 리튬 이차전지 |
JP2023096784A (ja) | 2021-12-27 | 2023-07-07 | エルジー エナジー ソリューション リミテッド | 正極活物質、正極活物質スラリー、正極、リチウムイオン二次電池、及び正極活物質の製造方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09330720A (ja) * | 1996-06-11 | 1997-12-22 | Sanyo Electric Co Ltd | リチウム電池 |
US20020119372A1 (en) * | 2001-02-28 | 2002-08-29 | Meijie Zhang | Use of lithium borate in non-aqueous rechargeable lithium batteries |
KR100458584B1 (ko) * | 2002-09-24 | 2004-12-03 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 혼합 양극 활물질 및 이를 포함하는리튬 이차 전지 |
KR100975875B1 (ko) * | 2006-12-26 | 2010-08-13 | 삼성에스디아이 주식회사 | 양극 활물질, 그 제조 방법 및 이를 채용한 양극과 리튬전지 |
KR20140018685A (ko) * | 2012-08-03 | 2014-02-13 | 주식회사 엘지화학 | 이차전지용 양극 활물질 및 이를 포함하는 리튬 이차전지 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004026378A (ja) | 2002-06-24 | 2004-01-29 | Kyowa Seisakusho:Kk | 移載装置及び昇降装置 |
JP4683527B2 (ja) * | 2004-07-22 | 2011-05-18 | 日本化学工業株式会社 | 改質リチウムマンガンニッケル系複合酸化物、その製造方法、リチウム二次電池正極活物質及びリチウム二次電池 |
KR20060091486A (ko) | 2005-02-15 | 2006-08-21 | 삼성에스디아이 주식회사 | 양극 활물질, 그 제조 방법 및 이를 채용한 양극과 리튬 전지 |
WO2014021665A1 (ko) | 2012-08-01 | 2014-02-06 | 주식회사 엘지화학 | 이차전지용 전극조립체 및 이를 포함하는 리튬 이차전지 |
KR20140025103A (ko) | 2012-08-21 | 2014-03-04 | 주식회사 엘지화학 | 리튬이차전지용 양극활물질 및 그 제조방법 |
CN103066282B (zh) * | 2013-01-10 | 2016-12-28 | 东莞新能源科技有限公司 | 高电压锂离子电池正极材料及包含该材料的锂离子电池 |
KR101747140B1 (ko) * | 2014-08-29 | 2017-06-14 | 주식회사 엘 앤 에프 | 리튬 이차 전지용 니켈계 복합 산화물, 및 이를 포함하는 리튬 이차 전지 |
KR101761367B1 (ko) * | 2014-12-19 | 2017-07-25 | 주식회사 엘지화학 | 혼합 양극활물질, 이를 포함하는 양극 및 이차전지 |
-
2014
- 2014-12-19 KR KR1020140184875A patent/KR101761367B1/ko active IP Right Grant
-
2015
- 2015-12-21 WO PCT/KR2015/014041 patent/WO2016099229A1/ko active Application Filing
- 2015-12-21 JP JP2017517748A patent/JP6559779B2/ja active Active
- 2015-12-21 US US15/517,641 patent/US10199641B2/en active Active
- 2015-12-21 CN CN201580057343.4A patent/CN107078281B/zh active Active
-
2019
- 2019-07-17 JP JP2019131876A patent/JP6862503B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09330720A (ja) * | 1996-06-11 | 1997-12-22 | Sanyo Electric Co Ltd | リチウム電池 |
US20020119372A1 (en) * | 2001-02-28 | 2002-08-29 | Meijie Zhang | Use of lithium borate in non-aqueous rechargeable lithium batteries |
KR100458584B1 (ko) * | 2002-09-24 | 2004-12-03 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 혼합 양극 활물질 및 이를 포함하는리튬 이차 전지 |
KR100975875B1 (ko) * | 2006-12-26 | 2010-08-13 | 삼성에스디아이 주식회사 | 양극 활물질, 그 제조 방법 및 이를 채용한 양극과 리튬전지 |
KR20140018685A (ko) * | 2012-08-03 | 2014-02-13 | 주식회사 엘지화학 | 이차전지용 양극 활물질 및 이를 포함하는 리튬 이차전지 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3486979A4 (en) * | 2017-02-02 | 2019-11-06 | LG Chem, Ltd. | CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND PREPARATION METHOD THEREOF |
US11121357B2 (en) | 2017-02-02 | 2021-09-14 | Lg Chem, Ltd. | Positive electrode active material for secondary battery and method of preparing the same |
CN109251704A (zh) * | 2017-07-13 | 2019-01-22 | 罗伯特·博世有限公司 | 用于电化学储能器的粘合剂组合物 |
JP2021501982A (ja) * | 2017-11-21 | 2021-01-21 | エルジー・ケム・リミテッド | リチウム二次電池用正極材、これを含む正極及びリチウム二次電池 |
JP7066223B2 (ja) | 2017-11-21 | 2022-05-13 | エルジー エナジー ソリューション リミテッド | リチウム二次電池用正極材、これを含む正極及びリチウム二次電池 |
US11799081B2 (en) | 2017-11-21 | 2023-10-24 | Lg Energy Solution, Ltd. | Positive electrode material for lithium secondary battery, positive electrode including same, and lithium secondary battery |
Also Published As
Publication number | Publication date |
---|---|
JP2019175872A (ja) | 2019-10-10 |
KR20160075196A (ko) | 2016-06-29 |
CN107078281B (zh) | 2020-08-04 |
JP2018505508A (ja) | 2018-02-22 |
US20170309898A1 (en) | 2017-10-26 |
JP6862503B2 (ja) | 2021-04-21 |
US10199641B2 (en) | 2019-02-05 |
JP6559779B2 (ja) | 2019-08-14 |
CN107078281A (zh) | 2017-08-18 |
KR101761367B1 (ko) | 2017-07-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016099229A1 (ko) | 혼합 양극활물질, 이를 포함하는 양극 및 이차전지 | |
WO2012144785A2 (ko) | 양극 활물질 및 그것을 포함한 리튬 이차전지 | |
WO2013157806A1 (ko) | 리튬 이차전지용 전극의 제조 방법 및 이를 사용하여 제조되는 전극 | |
WO2013085241A1 (ko) | 구형화 천연 흑연을 음극 활물질로 포함하는 리튬 이차전지 | |
WO2015053478A1 (ko) | 규소계 화합물을 포함하는 이차전지 | |
WO2014073833A1 (ko) | 이차전지용 양극 활물질 및 이를 포함하는 이차전지 | |
WO2013165150A1 (ko) | 리튬 복합 전이금속 산화물 제조용 전구체 및 그 제조방법 | |
WO2013009078A2 (ko) | 에너지 밀도 특성이 향상된 고 에너지 리튬 이차전지 | |
WO2011065651A2 (ko) | 두 성분들의 조합에 따른 양극 및 이를 이용한 리튬 이차전지 | |
WO2013157863A1 (ko) | 전극 및 이를 포함하는 이차전지 | |
WO2015141997A1 (ko) | 양극 활물질과 이를 포함하는 리튬 이차전지 | |
WO2014010854A1 (ko) | 고전압용 양극 활물질 및 이를 포함하는 리튬 이차전지 | |
WO2014196816A1 (ko) | 신규한 이차전지 | |
WO2014081252A1 (ko) | 리튬 이차전지용 전해액 및 이를 포함하는 리튬 이차전지 | |
WO2011065650A2 (ko) | 두 성분들의 조합에 따른 양극 및 이를 이용한 리튬 이차전지 | |
WO2015016506A1 (ko) | 에너지 밀도가 향상된 전극 활물질 및 이를 포함하는 리튬 이차전지 | |
WO2015012473A1 (ko) | 리튬 망간계 산화물 및 이를 포함하는 양극 활물질 | |
WO2013157854A1 (ko) | 성능이 우수한 리튬 이차전지 | |
WO2014081249A1 (ko) | 리튬 이차전지용 전해액 및 이를 포함하는 리튬 이차전지 | |
WO2015012640A1 (ko) | 에너지 밀도가 향상된 이차전지용 전극 및 이를 포함하는 리튬 이차전지 | |
WO2011122865A2 (ko) | 양극 활물질 및 이를 이용한 리튬 이차전지 | |
WO2013157832A1 (ko) | 리튬 이차전지용 전극의 제조 방법 및 이를 사용하여 제조되는 전극 | |
WO2014081254A1 (ko) | 리튬 이차전지용 전해액 및 이를 포함하는 리튬 이차전지 | |
WO2013157811A1 (ko) | 리튬 이차전지용 전극의 제조 방법 및 이를 사용하여 제조되는 전극 | |
WO2014081221A1 (ko) | 리튬 이차전지 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15870396 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017517748 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15517641 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15870396 Country of ref document: EP Kind code of ref document: A1 |