WO2015016548A1 - 비가역 첨가제가 포함되어 있는 이차전지용 양극 합제 - Google Patents
비가역 첨가제가 포함되어 있는 이차전지용 양극 합제 Download PDFInfo
- Publication number
- WO2015016548A1 WO2015016548A1 PCT/KR2014/006865 KR2014006865W WO2015016548A1 WO 2015016548 A1 WO2015016548 A1 WO 2015016548A1 KR 2014006865 W KR2014006865 W KR 2014006865W WO 2015016548 A1 WO2015016548 A1 WO 2015016548A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- positive electrode
- mixture
- lithium
- secondary battery
- irreversible additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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
- H01M4/62—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/364—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
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/044—Activating, forming or electrochemical attack of the supporting material
- H01M4/0445—Forming after manufacture of the electrode, e.g. first charge, cycling
- H01M4/0447—Forming after manufacture of the electrode, e.g. first charge, cycling of complete cells or cells stacks
-
- 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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
-
- 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
-
- 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
Definitions
- the present invention relates to a positive electrode mixture for a secondary battery containing an irreversible additive.
- lithium secondary batteries with high energy density and voltage, long cycle life, and low self discharge rate It is commercially used and widely used.
- Lithium-containing cobalt oxide (LiCoO 2 ) is mainly used as a positive electrode active material of the lithium secondary battery.
- lithium-containing manganese oxides such as spinel crystal structure LiMn 2 O 4 , lithium-containing nickel oxide (LiNiO 4 ), and the like are also used. have.
- Carbon materials are mainly used as negative electrode active materials, and lithium metals, sulfur compounds, and the like are also considered.
- the theoretical specific capacity of pure silicon (Si) is 4200 mAh / g, which is 372 mAh of graphite carbon. Since it is much larger than / g, a lithium secondary battery using the Si-based active material has attracted a lot of attention, and some may be used as an electrode mixed with a carbon material.
- the negative electrode has a lower irreversible efficiency than the positive electrode
- the amount of the negative electrode active material is excessively increased, which negatively affects the energy density of the battery.
- the positive electrode active material in order to match the irreversible capacity of the negative electrode, the positive electrode active material also has a problem in that an excessively large amount is input to correspond to the irreversible of the negative electrode.
- the present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.
- the inventors of the present application can effectively design irreversible efficiency by including an irreversible additive for lowering the irreversible efficiency of the positive electrode in the positive electrode mixture for secondary batteries, as described later. Accordingly, it was confirmed that the conductive network structure of the electrode can be improved due to the high conductivity, and the present invention has been completed.
- the positive electrode mixture for a secondary battery according to the present invention is characterized in that it contains an irreversible additive for lowering the irreversible efficiency of the positive electrode active material and the positive electrode.
- the irreversible additive may have an operating voltage of more than 1.0V to less than 2.5V compared to Li.
- the irreversible additive is usually lower than the operating voltage of 2.5 ⁇ 4.25V to participate in the reaction only during the initial charge and do not participate in the reaction during the discharge, it is possible to effectively design the irreversible efficiency of the battery.
- the irreversible additive may exhibit high, in some cases, conductivity, thereby improving the conductive network configuration of the electrode.
- the electrical resistance value of the irreversible additive may be 5 ⁇ m or more and 100 ⁇ m or less.
- the irreversible additive may be lithiated lithium titanium oxide represented by Li 7/3 Ti 5/3 O 4 .
- the irreversible additive may be a lithium molybdenum compound, more specifically, lithium molybdenum sulfide represented by the following formula (1).
- M is a metal or transition metal cation of +2 to + 4-valent oxidation water.
- the lithium molybdenum sulfide may be Li 2.3 Mo 6 S 7.7 .
- the irreversible additive may be included in the range of 0.1 wt% or more to 5 wt% or less based on the total weight of the positive electrode mixture.
- the positive electrode active material may include a lithium transition metal oxide represented by the following formula (2) or (3).
- M is at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti and Bi Is;
- A is -1 or -divalent one or more anions
- M is at least one selected from the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and bicycle transition metals;
- A is at least one selected from the group consisting of anions of PO 4 , BO 3 , CO 3 , F and NO 3 ;
- the positive electrode mixture may further include a binder and a conductive material.
- the irreversible additive may be applied uniformly mixed with the positive electrode active material on the positive electrode current collector, or may be applied in a layer with the positive electrode active material.
- the irreversible additive layer may be applied on the positive electrode active material layer on the positive electrode current collector, the thickness of the irreversible additive layer may be at least 0.1% to less than 20% based on the total thickness of the positive electrode mixture layer.
- the irreversible additive layer may further include a conductive material, in detail, the conductive material may be included in less than 20% by weight based on the total weight of the irreversible additive.
- the present invention provides a positive electrode prepared by applying the positive electrode mixture on an electrode current collector, in general, the positive electrode is coated with an electrode mixture which is a mixture of a positive electrode active material, the conductive material and a binder on the positive electrode current collector It is prepared by drying, and if necessary, further fillers may be added to the mixture.
- the positive electrode current collector is generally made to a thickness of 3 to 500 ⁇ m. Such a positive electrode current collector is not particularly limited as long as it has high conductivity without causing chemical change in the battery. For example, stainless steel, aluminum, nickel, titanium, calcined carbon, or aluminum or stainless steel Surface-treated with carbon, nickel, titanium, silver, and the like may be used.
- the 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, and a nonwoven fabric.
- the conductive material is typically added in an amount of 1 to 50% by weight based on the total weight of the mixture including the positive electrode active material.
- a conductive material is not particularly limited as long as it has conductivity without causing chemical change in the battery, and examples thereof include graphite such as 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 polyphenylene derivatives and the like can be used.
- the elastic graphite-based material may be used as the conductive material, or may be used together with the materials.
- the binder is a component that assists in bonding the active material and the conductive material to the current collector, and is generally added in an amount of 1 to 50 wt% based on the total weight of the mixture including the positive electrode active material.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene , Polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butylene rubber, fluorine rubber, various copolymers and the like.
- the filler is optionally used as a component for inhibiting expansion of the positive electrode, and is not particularly limited as long as it is a fibrous material without causing chemical change in the battery.
- the filler include olefinic polymers such as polyethylene and polypropylene; Fibrous materials, such as glass fiber and carbon fiber, are used.
- the present invention provides a secondary battery characterized in that the electrolyte is impregnated with an electrode assembly including the positive electrode, the negative electrode and the separator interposed between the positive electrode and the negative electrode.
- the negative electrode may include a silicon (Si) material as a negative electrode active material, and the silicon material may be a composite of silicon and silicon oxide and / or a silicon alloy.
- the negative electrode active material further comprises a carbon-based material
- the carbon-based material may be included in more than 70% by weight to 99.9% by weight based on the total weight of the negative electrode active material
- the carbon-based material is crystalline artificial graphite, It may be one or more selected from the group consisting of crystalline natural graphite, amorphous hard carbon, low crystalline soft carbon, carbon black, acetylene black, ketjen black, super P, graphene, and fibrous carbon, specifically, crystalline Artificial graphite, and / or crystalline natural graphite.
- the secondary battery may be a lithium ion battery, a lithium ion polymer battery, or a lithium polymer battery.
- the lithium secondary batteries are generally composed of a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode and a lithium salt-containing nonaqueous electrolyte, and other components of the lithium secondary battery will be described below.
- the negative electrode active material in addition to the carbon-based material, Si, Li x Fe 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, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen; 0 ⁇ x ⁇ 1;1 ⁇ y ⁇ 3; 1 ⁇ metal composite oxides such as z ⁇ 8); Lithium metal; Lithium alloys; Silicon-based alloys; Tin-based alloys; SnO, SnO 2 , PbO, PbO 2 , Pb 2 O 3 , Pb 3 O 4 , Sb 2 O 3 , Sb 2 O 4 , Sb 2 O 5 , GeO, GeO 2 , Bi 2 O 3 , Bi 2 O 4 , and metal oxides such as Bi 2 O 5 ; Conductive polymers such as polyacetylene; Li-Co-Ni
- the negative electrode current collector is generally made of a thickness of 3 ⁇ 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, and the like, aluminum-cadmium alloy, and 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 salt-containing nonaqueous electrolyte is composed of a nonaqueous electrolyte and lithium.
- a nonaqueous organic solvent, an organic solid electrolyte, an inorganic solid electrolyte and the like are used as the nonaqueous electrolyte, but are not limited thereto.
- non-aqueous organic solvent examples include N-methyl-2-pyrrolidinone, propylene carbonate, ethylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, and gamma Butyl lactone, 1,2-dimethoxy ethane, tetrahydroxy franc, 2-methyl tetrahydrofuran, dimethyl sulfoxide, 1,3-dioxorone, formamide, dimethylformamide, dioxolon , Acetonitrile, nitromethane, methyl formate, methyl acetate, phosphate triester, trimethoxy methane, dioxorone derivatives, sulfolane, methyl sulfolane, 1,3-dimethyl-2-imidazolidinone, propylene carbo Aprotic organic solvents such as nate derivatives, tetrahydrofuran derivatives, ethers, methyl pyroionate and ethyl propionate can be
- organic solid electrolytes examples include polyethylene derivatives, polyethylene oxide derivatives, polypropylene oxide derivatives, phosphate ester polymers, polyedgetion lysine, polyester sulfides, polyvinyl alcohols, polyvinylidene fluorides, Polymerizers 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 , Li 4 SiO 4 -LiI-LiOH, Li 3 PO 4 -Li 2 has a nitride, halides, sulfates, such as Li, such as S-SiS 2 can be used.
- the lithium salt is a good material to be dissolved 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 2) 2 NLi, chloroborane lithium, lower aliphatic carboxylic acid lithium, lithium tetraphenyl borate and imide.
- the lithium salt-containing non-aqueous electrolyte includes, for example, pyridine, triethyl phosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, and hexa for the purpose of improving charge and discharge characteristics and flame retardancy.
- 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) may be further included.
- lithium salts such as LiPF 6 , LiClO 4 , LiBF 4 , LiN (SO 2 CF 3 ) 2, and the like, may be prepared by cyclic carbonate of EC or PC, which is a highly dielectric solvent, and DEC, DMC, or EMC, which are low viscosity solvents.
- Lithium salt-containing non-aqueous electrolyte can be prepared by adding to a mixed solvent of linear carbonate.
- the present invention provides a battery module including the secondary battery as a unit cell, a battery pack including the battery module, and a device including the battery pack as a power source.
- a specific example of the device may be an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a system for power storage, but is not limited thereto.
- a positive electrode mixture was prepared by adding 1 wt% to N-methyl-2-pyrrolidone (NMP) as a solvent, and the positive electrode mixture was coated on an aluminum foil having a thickness of 15 ⁇ m to prepare a positive electrode.
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- Super-P conductive material
- PVdF binder
- a positive electrode mixture was prepared by adding to the positive electrode mixture, and the positive electrode mixture was applied to an aluminum foil having a thickness of 15 ⁇ m, and lithium molybdenum sulfide (Li 2.3 Mo 6 S 7.7 ) was added as an irreversible additive on the positive electrode mixture layer applied to the aluminum foil.
- the positive electrode was prepared by coating to a thickness of ⁇ m.
- lithium nickel manganese-based composite oxide containing excess nickel as the positive electrode active material 92% by weight of lithium nickel manganese-based composite oxide containing excess nickel as the positive electrode active material, 3% by weight of Super-P (conductive material), 3% by weight of PVdF (binder) and lithium titanium oxide (Li (Li 1 / 3 Ti 5/3 ) O 4 ) 2 wt% was added to NMP (N-methyl-2-pyrrolidone) as a solvent to prepare a positive electrode mixture, and the positive electrode mixture was coated on an aluminum foil having a thickness of 15 ⁇ m to prepare a positive electrode. It was.
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- Super-P conductive material
- PVdF binder
- a positive electrode mixture was prepared by adding to the positive electrode mixture, and the positive electrode mixture was applied to an aluminum foil having a thickness of 15 ⁇ m, and lithium titanium oxide (Li (Li 1/3 Ti 5 //) as an irreversible additive on the positive electrode mixture layer applied to the aluminum foil. 3 ) O 4 ) was applied to a thickness of 10 ⁇ m to prepare a positive electrode.
- a positive electrode mixture was prepared by adding 94 wt% of lithium nickel manganese composite oxide, 3 wt% of Super-P (conductive material), and 3 wt% of PVdF (binder) to NMP (N-methyl-2-pyrrolidone) as a solvent. , The positive electrode was prepared in the same manner as in Example 1.
- a negative electrode including a silicon-carbon composite as a negative electrode active material As a negative electrode including a silicon-carbon composite as a negative electrode active material, a negative electrode having an irreversible efficiency of 84% (charge capacity 535 mAh / g) was prepared, and the irreversible efficiency of the positive electrode prepared in Examples 1 to 4 and Comparative Example 1, respectively.
- Table 1 shows the capacity of the battery prepared by measuring a battery comprising the positive electrode and the negative electrode, respectively.
- the positive electrode mixture of Comparative Example 1 does not include the irreversible additive It can be seen that the difference in irreversible efficiency with the cathode is smaller than that of. This indicates that lithium corresponding to the irreversibility of the negative electrode increases the irreversibility of the positive electrode, thereby exerting the effect of improving the capacity of the battery as a whole.
- the operating voltage of the lithium molybdenum sulfide and lithium titanium oxide is in the range of 1.0V or more and 2.5V or less with respect to Li, and lower than the operating voltage of the positive electrode, thus participating in the reaction only at the initial charge and reacting at the time of discharge. Because do not participate in.
- the lithium molybdenum sulfide and lithium titanium oxide are added to the positive electrode mixture as an irreversible additive, or additionally applied on the positive electrode mixture layer, by adjusting the initial irreversible efficiency of the positive electrode to a range similar to the negative electrode, the overall The energy density per capacity and volume of the battery cell can be maximized.
- the positive electrode mixture for the secondary battery according to the present invention includes an irreversible additive that lowers the irreversible efficiency of the positive electrode active material and the positive electrode, thereby effectively designing the irreversible efficiency of the battery, and improving the conductive network configuration of the electrode. You can.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (28)
- 양극 활물질 및 양극의 비가역 효율을 낮추는 비가역 첨가제가 포함되어 있는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 비가역 첨가제는Li 대비 1.0V이상 내지 2.5V 이하의 작동전압을 갖는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 비가역 첨가제는 높은 도전성을 나타내는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 3 항에 있어서, 상기 비가역 첨가제의 전기 저항값은 5 μΩm 이상 내지 100 μΩm 이하인 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 비가역 첨가제는 리튬화된 리튬 티타늄 산화물(Lithiated LTO) 또는 리튬 몰리브덴 화합물인 것을 특징으로 하는 이차전지용 양극 합제.
- 제 5 항에 있어서, 상기 비가역 첨가제는 Li7/3Ti5/3O4으로 표현되는 리튬화된 리튬 티타늄 산화물인 것을 특징으로 하는 이차전지용 양극 합제.
- 제 5 항에 있어서, 상기 비가역 첨가제는 하기 화학식 1로 표현되는 리튬 몰리브덴 황화물인 것을 특징으로 하는 이차전지용 양극 합제:Li2+xMo6-yMyS8-z (1)상기 식에서, -0.1≤x≤0.5, 0≤y≤0.5, -0.1≤z≤0.5이고,M은 +2가 내지 +4가 산화수의 금속 또는 전이금속 양이온이다.
- 제 7 항에 있어서, 상기 리튬 몰리브덴 황화물은 Li2.3Mo6S7.7인 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 비가역 첨가제는 양극 합제 전체 중량을 기준으로 0.1 중량% 이상 내지 5 중량% 이하의 범위로 포함되어 있는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 양극 활물질은 하기 화학식 2 또는 3으로 표현되는 리튬 전이금속 산화물을 포함하는 것을 특징으로 하는 이차전지용 양극 합제:LixMyMn2-yO4-zAz (2)상기 식에서,M은 Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti 및 Bi로 이루어진 군에서 선택되는 하나 이상의 원소이며;A는 -1 또는 -2가의 하나 이상의 음이온이고;0.9≤x≤1.2, 0<y<2, 0≤z<0.2이다.(1-x)LiM'O2-yAy -xLi2MnO3-y'Ay' (3)상기 식에서,M'은 MnaMb이고;M은 Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn 및 2주기 전이금속들로 이루어진 군에서 선택되는 하나 이상이며;A는 PO4, BO3, CO3, F 및 NO3의 음이온으로 이루어진 군에서 선택되는 하나 이상이고;0<x<1, 0<y≤0.02, 0<y'≤0.02, 0.5≤a≤1.0, 0≤b≤0.5, a + b = 1이다.
- 제 1 항에 있어서, 상기 양극 합제는 바인더 및 도전재를 더 포함하고 있는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 비가역 첨가제는 양극 집전체 상에서 양극 활물질과 균일하게 혼합되어 도포되는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항에 있어서, 상기 비가역 첨가제는 양극 집전체 상에서 양극 활물질과 층을 이루어 도포되는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 13 항에 있어서, 상기 비가역 첨가제 층의 두께는 양극 합제 층의 전체 두께를 기준으로 0.1% 이상 내지 20% 미만인 것을 특징으로 하는 이차전지용 양극 합제.
- 제 13 항에 있어서, 상기 비가역 첨가제 층은 도전재를 더 포함하고 있는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 15 항에 있어서, 상기 도전재는 비가역 첨가제 전체 중량을 기준으로 20 중량% 미만으로 포함되어 있는 것을 특징으로 하는 이차전지용 양극 합제.
- 제 1 항 내지 제 16 항 중 어느 하나에 따른 양극 합제를 전극집전체 상에 도포하여 제조되는 것을 특징으로 하는 양극.
- 제 17 항에 따른 양극, 음극 및 상기 양극과 음극 사이에 개재되는 분리막을 포함하는 전극조립체에 전해액이 함침되어 있는 것을 특징으로 하는 이차전지.
- 제 18 항에 있어서, 상기 음극은 음극 활물질로서, 실리콘(Si)계 물질을 포함하는 것을 특징으로 하는 이차전지.
- 제 19 항에 있어서, 상기 실리콘계 물질은 실리콘 및 실리콘 산화물의 복합체 및/또는 실리콘 합금인 것을 특징으로 하는 이차전지.
- 제 19 항에 있어서, 상기 음극 활물질은 탄소계 물질을 더 포함하고, 상기 탄소계 물질은 음극 활물질 전체 중량을 기준으로 70 중량% 이상 내지 99.9 중량% 이하로 포함되어 있는 것을 특징으로 하는 이차전지.
- 제 21 항에 있어서, 상기 탄소계 물질은 결정질 인조 흑연, 결정질 천연 흑연, 비정질 하드카본, 저결정질 소프트카본, 카본 블랙, 아세틸렌 블랙, 케첸 블랙, 수퍼 P, 그래핀 (graphene), 및 섬유상 탄소로 이루어진 군으로부터 선택되는 하나 이상인 것을 특징으로 하는 이차전지.
- 제 22 항에 있어서, 상기 탄소계 물질은 결정질 인조 흑연, 및/또는 결정질 천연 흑연인 것을 특징으로 하는 이차전지.
- 제 18 항에 있어서, 상기 이차전지는 리튬 이온 전지, 리튬 이온 폴리머 전지, 또는 리튬 폴리머 전지인 것을 특징으로 하는 이차전지.
- 제 18 항에 따른 이차전지를 단위전지로 포함하는 것을 특징으로 하는 전지모듈.
- 제 25 항에 따른 전지모듈을 포함하는 것을 특징으로 하는 전지팩.
- 제 26 항에 따른 전지팩을 전원으로 포함하는 것을 특징으로 하는 디바이스.
- 제 27 항에 있어서, 상기 디바이스는 전기자동차, 하이브리드 전기자동차, 플러그-인 하이브리드 전기자동차, 또는 전력저장용 시스템인 것을 특징으로 하는 디바이스.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/891,250 US10218002B2 (en) | 2013-07-30 | 2014-07-28 | Positive electrode mix for secondary batteries including irreversible additive |
| CN201480027423.0A CN105247715B (zh) | 2013-07-30 | 2014-07-28 | 包含不可逆添加剂的二次电池用正极混合物 |
| JP2016512855A JP6254258B2 (ja) | 2013-07-30 | 2014-07-28 | 非可逆添加剤が含まれている二次電池用正極合剤 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0090534 | 2013-07-30 | ||
| KR20130090534 | 2013-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015016548A1 true WO2015016548A1 (ko) | 2015-02-05 |
Family
ID=52432024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2014/006865 Ceased WO2015016548A1 (ko) | 2013-07-30 | 2014-07-28 | 비가역 첨가제가 포함되어 있는 이차전지용 양극 합제 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10218002B2 (ko) |
| JP (1) | JP6254258B2 (ko) |
| KR (1) | KR101625822B1 (ko) |
| CN (1) | CN105247715B (ko) |
| WO (1) | WO2015016548A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190001573A (ko) * | 2017-06-27 | 2019-01-04 | 주식회사 엘지화학 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014216839A1 (de) | 2014-08-25 | 2016-02-25 | Robert Bosch Gmbh | Komposit-Anode für eine galvanische Zelle und galvanische Zelle |
| KR102091214B1 (ko) * | 2016-09-12 | 2020-03-19 | 주식회사 엘지화학 | 고전압용 리튬 코발트 산화물을 포함하는 리튬 이차전지용 양극 활물질 및 이를 제조하는 방법 |
| DE102016225925A1 (de) * | 2016-12-21 | 2018-06-21 | Robert Bosch Gmbh | Batteriezelle und Batterie umfassend irreversibel Lithium freisetzendes Material |
| KR102388848B1 (ko) | 2017-11-30 | 2022-04-20 | 주식회사 엘지에너지솔루션 | 양극 첨가제, 이의 제조 방법, 이를 포함하는 양극 및 리튬 이차 전지 |
| KR102297246B1 (ko) * | 2017-11-30 | 2021-09-03 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 양극 및 그를 포함하는 리튬 이차전지 |
| WO2019108026A1 (ko) * | 2017-12-01 | 2019-06-06 | 주식회사 엘지화학 | 전극조립체 및 그를 포함하는 리튬 이차전지 |
| KR102709297B1 (ko) | 2017-12-01 | 2024-09-24 | 주식회사 엘지에너지솔루션 | 전극조립체 및 그를 포함하는 리튬 이차전지 |
| US11283064B2 (en) | 2017-12-27 | 2022-03-22 | Lg Energy Solution, Ltd. | Lithium secondary battery |
| KR102715574B1 (ko) * | 2019-05-27 | 2024-10-08 | 주식회사 엘지에너지솔루션 | 양극 첨가제, 이의 제조 방법, 이를 포함하는 양극 및 리튬 이차 전지 |
| KR102568649B1 (ko) * | 2019-07-31 | 2023-08-22 | 재단법인대구경북과학기술원 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
| WO2021091108A1 (ko) * | 2019-11-07 | 2021-05-14 | 주식회사 엘지에너지솔루션 | 리튬 이차전지의 제조방법 |
| KR102631720B1 (ko) * | 2019-11-07 | 2024-01-31 | 주식회사 엘지에너지솔루션 | 리튬 이차전지의 제조방법 |
| US12463215B2 (en) | 2019-12-06 | 2025-11-04 | Enevate Corporation | Method and system for sulfur and sulfur-containing chemicals as cathode additives for silicon anode-based lithium ion batteries |
| KR102894073B1 (ko) * | 2020-01-31 | 2025-12-02 | 주식회사 엘지에너지솔루션 | 이차전지용 양극재에 포함되는 비가역 첨가제, 이를 포함하는 양극재, 및 양극재를 포함하는 이차전지 |
| EP4191711B1 (en) * | 2020-11-26 | 2026-03-25 | LG Energy Solution, Ltd. | Additive for positive electrode of lithium secondary battery, method for manufacturing same, and lithium secondary battery comprising same |
| KR20220144514A (ko) | 2021-04-20 | 2022-10-27 | 주식회사 엘지에너지솔루션 | 리튬 이차전지 |
| WO2022244977A1 (ko) * | 2021-05-18 | 2022-11-24 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
| KR102840395B1 (ko) * | 2021-05-25 | 2025-07-29 | 주식회사 엘지에너지솔루션 | 양극 슬러리 및 이를 이용한 리튬 이차전지용 양극 |
| KR102798805B1 (ko) * | 2021-06-03 | 2025-04-23 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
| CN117355953A (zh) * | 2022-01-14 | 2024-01-05 | 宁德时代新能源科技股份有限公司 | 一种用于锂离子二次电池的正极复合材料、正极和电池 |
| CN114583296B (zh) * | 2022-03-01 | 2023-05-12 | 松山湖材料实验室 | 锂离子电池及其正极补锂方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001023697A (ja) * | 1999-07-09 | 2001-01-26 | Matsushita Electric Ind Co Ltd | 非水電解質二次電池 |
| KR20060106772A (ko) * | 2005-04-01 | 2006-10-12 | 주식회사 엘지화학 | 전극 첨가제를 포함하는 리튬 이차 전지용 전극 및 상기전극을 포함하는 리튬 이차 전지 |
| US20080003503A1 (en) * | 2006-06-09 | 2008-01-03 | Canon Kabushiki Kaisha | Powder material, electrode structure using the powder material, and energy storage device having the electrode structure |
| KR20110134852A (ko) * | 2010-06-09 | 2011-12-15 | 주식회사 루트제이제이 | 리튬 이차전지용 양극 활 물질, 그 제조방법 및 이를 포함하는 리튬 이차전지 |
| KR20120122788A (ko) * | 2011-04-29 | 2012-11-07 | 주식회사 엘지화학 | 전기화학적 성능이 향상된 리튬 망간 산화물계 양극활물질 및 이를 포함하는 리튬 이차 전지 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0821381B2 (ja) * | 1987-03-30 | 1996-03-04 | 松下電器産業株式会社 | 電気化学セル |
| JP3332133B2 (ja) | 1994-09-21 | 2002-10-07 | 松下電器産業株式会社 | 全固体リチウム二次電池 |
| KR100444804B1 (ko) * | 1996-06-14 | 2004-10-14 | 히다치 마쿠세루가부시키가이샤 | 리튬 2차전지 |
| JP4834901B2 (ja) | 1999-08-27 | 2011-12-14 | 三菱化学株式会社 | リチウム二次電池用正極材料 |
| JP2004319268A (ja) | 2003-04-16 | 2004-11-11 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
| JP2006344395A (ja) | 2005-06-07 | 2006-12-21 | Toyota Motor Corp | リチウム二次電池用正極及びその利用と製造 |
| JP2008300244A (ja) | 2007-05-31 | 2008-12-11 | Mitsui Mining & Smelting Co Ltd | 非水電解液二次電池用正極 |
| CN102037601B (zh) | 2007-07-12 | 2014-04-23 | A123系统公司 | 用于锂离子电池的多功能混合金属橄榄石 |
| JP5259268B2 (ja) * | 2008-06-25 | 2013-08-07 | 三星エスディアイ株式会社 | 非水電解質二次電池 |
| MY156504A (en) * | 2008-11-24 | 2016-02-26 | Univ Singapore | A cathode material for a battery with improved cycle performance at a high current density |
| JP5495539B2 (ja) * | 2008-11-28 | 2014-05-21 | 三井金属鉱業株式会社 | 非水電解液二次電池用正極 |
| US20120034526A1 (en) | 2009-03-31 | 2012-02-09 | Mitsubishi Heavy Industries, Ltd. | Lithium ion secondary battery and battery system |
| JP5152246B2 (ja) | 2010-04-23 | 2013-02-27 | 株式会社豊田自動織機 | リチウムイオン二次電池用正極活物質およびリチウムイオン二次電池 |
| JP5419093B2 (ja) | 2010-04-27 | 2014-02-19 | 日立マクセル株式会社 | 非水二次電池 |
| JP5424052B2 (ja) | 2010-05-11 | 2014-02-26 | 株式会社デンソー | 非水電解液二次電池及びその製造方法 |
| KR101202334B1 (ko) | 2010-07-20 | 2012-11-16 | 삼성에스디아이 주식회사 | 양극 및 이를 포함한 리튬 전지 |
| KR101297910B1 (ko) | 2011-02-09 | 2013-08-22 | 주식회사 엘지화학 | 출력특성이 향상된 혼합 양극활물질 및 이를 포함하는 리튬 이차전지 |
| KR20140044409A (ko) | 2011-02-15 | 2014-04-14 | 제이에스알 가부시끼가이샤 | 축전 디바이스용 전극, 전극용 슬러리, 전극용 바인더 조성물 및 축전 디바이스 |
| WO2012115411A2 (ko) | 2011-02-21 | 2012-08-30 | 주식회사 엘지화학 | 출력 특성이 향상된 혼합된 양극활물질 및 이를 포함하는 리튬 이차전지 |
| KR101463648B1 (ko) | 2011-06-30 | 2014-11-19 | 주식회사 엘지화학 | 출력특성이 향상된 혼합 양극활물질 및 이를 포함하는 리튬 이차전지 |
| JP6057644B2 (ja) | 2012-09-21 | 2017-01-11 | 株式会社Kri | リチウムイオン電池 |
| US20140141224A1 (en) * | 2012-11-08 | 2014-05-22 | William Marsh Rice University | Fabrication of carbon foams through solution processing in superacids |
-
2014
- 2014-07-28 JP JP2016512855A patent/JP6254258B2/ja active Active
- 2014-07-28 WO PCT/KR2014/006865 patent/WO2015016548A1/ko not_active Ceased
- 2014-07-28 US US14/891,250 patent/US10218002B2/en active Active
- 2014-07-28 CN CN201480027423.0A patent/CN105247715B/zh active Active
- 2014-07-29 KR KR1020140096311A patent/KR101625822B1/ko active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001023697A (ja) * | 1999-07-09 | 2001-01-26 | Matsushita Electric Ind Co Ltd | 非水電解質二次電池 |
| KR20060106772A (ko) * | 2005-04-01 | 2006-10-12 | 주식회사 엘지화학 | 전극 첨가제를 포함하는 리튬 이차 전지용 전극 및 상기전극을 포함하는 리튬 이차 전지 |
| US20080003503A1 (en) * | 2006-06-09 | 2008-01-03 | Canon Kabushiki Kaisha | Powder material, electrode structure using the powder material, and energy storage device having the electrode structure |
| KR20110134852A (ko) * | 2010-06-09 | 2011-12-15 | 주식회사 루트제이제이 | 리튬 이차전지용 양극 활 물질, 그 제조방법 및 이를 포함하는 리튬 이차전지 |
| KR20120122788A (ko) * | 2011-04-29 | 2012-11-07 | 주식회사 엘지화학 | 전기화학적 성능이 향상된 리튬 망간 산화물계 양극활물질 및 이를 포함하는 리튬 이차 전지 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190001573A (ko) * | 2017-06-27 | 2019-01-04 | 주식회사 엘지화학 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
| KR102268082B1 (ko) | 2017-06-27 | 2021-06-23 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105247715A (zh) | 2016-01-13 |
| US20160133933A1 (en) | 2016-05-12 |
| US10218002B2 (en) | 2019-02-26 |
| CN105247715B (zh) | 2019-04-09 |
| KR20150014878A (ko) | 2015-02-09 |
| JP2016518012A (ja) | 2016-06-20 |
| JP6254258B2 (ja) | 2017-12-27 |
| KR101625822B1 (ko) | 2016-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015016548A1 (ko) | 비가역 첨가제가 포함되어 있는 이차전지용 양극 합제 | |
| WO2015016482A1 (ko) | 음극 전극의 전리튬화 방법 | |
| WO2016148383A1 (ko) | 다층 구조 전극 및 이를 포함하는 리튬 이차전지 | |
| WO2015016563A1 (ko) | 전해액과 반응을 방지하기 위한 코팅층을 포함하는 전극 | |
| WO2015016479A1 (ko) | 전해액의 추가 공급이 가능한 이차전지 | |
| WO2015016506A1 (ko) | 에너지 밀도가 향상된 전극 활물질 및 이를 포함하는 리튬 이차전지 | |
| WO2013009078A9 (ko) | 에너지 밀도 특성이 향상된 고 에너지 리튬 이차전지 | |
| WO2014073833A1 (ko) | 이차전지용 양극 활물질 및 이를 포함하는 이차전지 | |
| WO2014010854A1 (ko) | 고전압용 양극 활물질 및 이를 포함하는 리튬 이차전지 | |
| WO2013137577A1 (ko) | 리튬 복합 전이금속 산화물 제조용 전구체 및 그 제조방법 | |
| WO2013157827A1 (ko) | 서로 다른 형상의 양극과 음극을 포함하는 전극조립체 및 이차전지 | |
| WO2011084003A2 (ko) | 4v 영역과 3v 영역에서 우수한 충방전 특성을 발휘할 수 있는 리튬 망간 산화물을 포함하는 양극 활물질 | |
| WO2013109038A1 (ko) | 양극 활물질 및 이를 포함하고 불순물 혹은 스웰링 제어를 위한 리튬 이차전지와 생산성이 향상된 양극 활물질의 제조방법 | |
| WO2015012640A1 (ko) | 에너지 밀도가 향상된 이차전지용 전극 및 이를 포함하는 리튬 이차전지 | |
| WO2015026080A1 (ko) | 양극 활물질 및 이를 포함하는 리튬 이차전지와 이의 제조방법 | |
| WO2015016531A1 (ko) | 수명 특성이 향상된 이차전지용 음극 활물질 | |
| WO2013157832A1 (ko) | 리튬 이차전지용 전극의 제조 방법 및 이를 사용하여 제조되는 전극 | |
| WO2015012473A1 (ko) | 리튬 망간계 산화물 및 이를 포함하는 양극 활물질 | |
| WO2014196777A1 (ko) | 황-리튬 이온 전지용 전극 조립체 및 이를 포함하는 황-리튬 이온 전지 | |
| WO2012161476A2 (ko) | 에너지 밀도 특성이 향상된 고에너지 밀도의 리튬 이차전지 | |
| WO2012039563A2 (ko) | 리튬 망간계 산화물을 포함하는 양극 활물질 및 비수 전해질 이차전지 | |
| WO2013165150A1 (ko) | 리튬 복합 전이금속 산화물 제조용 전구체 및 그 제조방법 | |
| WO2013157811A1 (ko) | 리튬 이차전지용 전극의 제조 방법 및 이를 사용하여 제조되는 전극 | |
| WO2015026121A1 (ko) | 수명특성이 우수한 리튬 코발트계 복합 산화물 및 이를 포함하는 이차전지용 양극 활물질 | |
| WO2015141997A1 (ko) | 양극 활물질과 이를 포함하는 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: 14831577 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2016512855 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14891250 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: 14831577 Country of ref document: EP Kind code of ref document: A1 |
