WO2006118013A1 - 非水電解液二次電池 - Google Patents
非水電解液二次電池 Download PDFInfo
- Publication number
- WO2006118013A1 WO2006118013A1 PCT/JP2006/308048 JP2006308048W WO2006118013A1 WO 2006118013 A1 WO2006118013 A1 WO 2006118013A1 JP 2006308048 W JP2006308048 W JP 2006308048W WO 2006118013 A1 WO2006118013 A1 WO 2006118013A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- positive electrode
- active material
- electrode active
- composite oxide
- secondary battery
- Prior art date
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
- H01M4/36—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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/40—Nickelates
- C01G53/42—Nickelates containing alkali metals, e.g. LiNiO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
- H01B1/122—Ionic conductors
-
- 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
- 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
- H01M4/36—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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/11—Powder tap density
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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 non-aqueous electrolyte secondary battery, and more particularly to improvement of the positive electrode active material.
- a non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator interposed therebetween.
- a microporous membrane made of polyolefin is mainly used.
- the non-aqueous electrolyte uses an aprotic organic solvent in which lithium salts such as LiBF and LiPF are dissolved.
- lithium-containing composite oxides as positive electrode active materials and carbon materials, silicon compounds, tin compounds, etc. as negative electrode materials
- lithium secondary batteries with high energy density.
- lithium cobalt oxide for example, LiCoO
- Lithium cobalt oxide is
- the potential to be generated is high and the safety is excellent, and the synthesis is relatively easy.
- Nickel is a resource
- Patent Literature 1 Co and A1 are added to LiNiO from the viewpoint of improving the thermal stability of LiNiO.
- Patent Document 2 from the viewpoint of improving cycle characteristics and high-temperature storage characteristics, a general formula: Li Ni Co Mn AO (where A is Fe ⁇ V, Cr ⁇ Mn ⁇ Ti, Mg ⁇ Al, Consists of B and Ca
- Group power selected at least one selected, 0. 05 ⁇ x ⁇ l. 10, 0. 10 ⁇ y + z ⁇ 0. 70, 0. 05 ⁇ z ⁇ 0. 40, 0 ⁇ a ⁇ 0. 1 ) is represented by the positive electrode active material electronic conductivity ⁇ is a 10- 4 ⁇ ⁇ 10- ⁇ Zcm have been proposed.
- an active material having a composition that can improve cycle characteristics and high-temperature storage characteristics is not practical because of its low capacity.
- Patent Document 3 from the viewpoint of improving cycle characteristics, a general formula: A P Ni M N O (formula
- 2 A is at least one selected from alkali metals
- P is a group force consisting of Mg, B, P and In
- M is a group force selected from Mn, Co and AU
- Cathode active material, graphite and carbon A positive electrode containing black has been proposed.
- the high-temperature storage characteristics of the battery are governed by the crystal stability of the positive electrode active material. Therefore, the conductive agent (graphite and carbon black) does not sufficiently contribute to the improvement of high temperature storage characteristics.
- Patent Document 4 from the viewpoint of improving cycle characteristics, a general formula: A B C D O (where,
- A is at least one selected from alkali metals
- B is a transition metal
- C is a group force selected from Al
- D is (a) an alkali metal other than A
- B Transition metals other than B
- Group IIa elements Group IIIb (excluding Al and In), Group IVb (excluding carbon and Sn), and Group Vb (excluding oxygen) Group force consisting of elements from 2 to 6th period
- the cobalt is used as the transition metal
- the cycle characteristics are improved, but when the nickel is used as the transition metal, there is no sufficient improvement.
- Patent Document 5 from the viewpoint of improving high-temperature storage characteristics, 100 to 1500 ppm of alkali metal and Z or alkaline earth metal element is added to the composite oxide of lithium and transition metal. It has been proposed to contain. When cobalt is used as the transition metal, the high-temperature storage characteristics are improved. However, when nickel is used as the transition metal, there is no sufficient improvement.
- Patent Document 1 Japanese Patent Laid-Open No. 5-242891
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-111076
- Patent Document 3 Japanese Patent Laid-Open No. 11-40154
- Patent Document 4 Japanese Unexamined Patent Publication No. 63-121258
- Patent Document 5 Japanese Unexamined Patent Application Publication No. 2002-15740
- the present invention has been made in view of the above, and by improving the lithium nickel oxide contained in the positive electrode, it has a high capacity and achieves both cycle characteristics and high-temperature storage characteristics. Furthermore, it aims at realizing a non-aqueous electrolyte secondary battery having excellent discharge load characteristics.
- the present invention has the formula 1: Li Ni Co Al M 1 lithium-containing composite oxide represented by M 2 O
- the element M 1 in formula 1 is at least one selected from the group consisting of Mn, Ti, Y, Nb, Mo and W, and the element M 2 in formula 1 is Mg, Ca, Sr And at least two selected from the group consisting of Ba, and the element M 2 contains at least Mg and Ca, and the formula 1 is expressed as 0. 97 ⁇ x ⁇ l. 1, 0. 05 ⁇ y ⁇ Cathode active material for non-aqueous electrolyte secondary batteries satisfying 0. 35, 0. 005 ⁇ z ⁇ 0. 1, 0. 0001 ⁇ v ⁇ 0. 05, and 0. 0001 ⁇ w ⁇ 0.05 About.
- the composite oxide represented by Formula 1 is composed of primary particles, and the primary particles form secondary particles.
- the average particle size of the primary particles is 0.1 m or more and 3 ⁇ m or less, and the average particle size of the secondary particles is 8 ⁇ m or more and 20 ⁇ m or less.
- the present invention also provides a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a battery.
- the present invention relates to a non-aqueous electrolyte secondary battery comprising a solution, wherein the positive electrode includes a positive electrode active material made of the above lithium-containing composite oxide.
- BET specific surface area of the composite Sani ⁇ of the present invention as measured by nitrogen gas adsorption, 0. 2m 2 Zg or more and 1. is 5 m 2 Zg below.
- Equation 1 preferably satisfies the relationship 0.l ⁇ vZw ⁇ 10.
- the number of Mg atoms wl and the number of Ca atoms w2 contained in the composite oxide of the present invention satisfy the relationship 2 ⁇ wlZw2 ⁇ 20.
- the tap density of the composite oxide of the present invention is preferably 2.2 g / cm 3 or more and 2.8 g / cm 3 or less.
- the Li occupancy obtained by Rietveld analysis at the Li site of the complex oxide crystal of the present invention is preferably 97% or more.
- the present invention further provides a lithium-containing composite represented by the formula 1: Li Ni Co Al M 1 M 2 O
- the present invention relates to a method for producing a positive electrode active material made of an oxide.
- the production method of the present invention has the formula 2: Ni C
- Step 1 for obtaining a hydroxide represented by M 1 M 2 (OH) a, y containing the hydroxide y V w 2
- Element M 1 in Formulas 1 and 2 is at least one selected from the group consisting of Mn, Ti, Y, Nb, Mo, and W.
- Element M 2 in Formulas 1 and 2 is Mg, And at least two selected from the group consisting of Ca, Sr and Ba, and the element M 2 contains at least Mg and Ca. , 0. 0001 ⁇ v ⁇ 0.05, and 0.0001 ⁇ w ⁇ 0.05, and Equation 1 is 0.97 ⁇ x ⁇ l.1 and 0.005 ⁇ z ⁇ 0.1. Fulfill.
- step b the above-mentioned hydroxy acid stirred in water is added with NaAlO to produce a brute acid.
- step c the first compound is fired at 500 ° C or higher and 1100 ° C or lower in an oxidizing atmosphere.
- step e the second compound is fired at 600 ° C or higher and 850 ° C or lower in an oxidizing atmosphere, I prefer to get a second acid.
- the present invention relates to a positive electrode active material comprising a composite oxide obtained by the above production method.
- primary particles aggregate to form secondary particles, and the average primary particle size is 0.1 ⁇ m or more and 3 ⁇ m or less.
- a composite oxide having a diameter of 8 ⁇ m or more and 20 m or less can be easily obtained.
- BET specific surface area as measured by nitrogen gas adsorption is 0. 2m 2 / g or more, 1. 5 m 2 / g and less is composite oxide can be obtained easily.
- the stability of the crystal of the lithium-containing composite oxide is improved, and the side reaction between the positive electrode active material and the non-aqueous electrolyte is suppressed. Therefore, it is possible to provide a non-aqueous electrolyte secondary battery having high capacity and having both cycle characteristics and high-temperature storage characteristics. Moreover, according to the present invention, a nonaqueous electrolyte secondary battery excellent in discharge load characteristics can be provided.
- FIG. 1 is a perspective view in which a part of a prismatic battery of the present invention is cut away.
- FIG. 2 is a graph showing the relationship between the y value representing the Co content in the lithium-containing composite oxide, the discharge capacity, and the heat generation start temperature.
- FIG. 3 is a diagram showing the relationship between the z value representing the content of A1 in the lithium-containing composite oxide, the discharge capacity, and the heat generation start temperature.
- FIG. 4 is a diagram showing the relationship between the value representing the Li content in the lithium-containing composite oxide, the discharge capacity, and the high-temperature storage characteristics.
- the positive electrode of the non-aqueous electrolyte secondary battery of the present invention includes a positive electrode active material composed of a lithium-containing composite oxide, and the composite oxide is represented by the formula 1: Li Ni Co Al M 1 M 2 O. Is done.
- the composite oxide is represented by the formula 1: Li Ni Co Al M 1 M 2 O. Is done.
- Lithium nickel oxide doped with Co and Al improves the thermal stability of the crystal. However, when using lithium nickel oxide doped with Co and A1, LiCoO was used.
- the battery cycle characteristics and high-temperature storage characteristics tend to be insufficient.
- the reason why the cycle characteristics are lowered is thought to be that the crystal stability of lithium nickel oxide doped with Co and A1 is lowered during charging.
- the element M 1 and the element M 2 have an effect of improving crystal stability during charging of lithium nickel oxide doped with Co and A1.
- the element M 2 is generally easily replaced with the Ni layer other than the Ni layer, and is easily and efficiently introduced into the Li layer of the positive electrode active material. This is because, when the element M 2 is replaced with the Ni layer, the valence becomes 3 or less (that is, less than or equal to the Ni valence in the crystal) and disturbs the electrical neutrality in the crystal. However, if Li is replaced by elemental M 2, Li available amount is reduced to charging and discharging. Therefore, the battery capacity will decrease.
- the element M 1 and the element M 2 are simultaneously contained in the crystal of the positive electrode active material, the element M 1 stabilizes the replacement of the element M 2 with the Ni layer. Therefore, both elements are efficiently introduced into the Ni layer. This is probably because the element M 1 has a valence of 3 or more in the crystal, so that the electrical neutrality of the crystal disturbed by the addition of the element M 2 is relaxed.
- the positive electrode active material needs to contain appropriate amounts of Co and A1 from the viewpoint of improving the thermal stability. Further, the element M 1 and the element M 2 do not contribute to the battery capacity or contribute little. Therefore, from the viewpoint of securing capacity, it is desirable that the amount of addition of the element M 1 and the element M 2 to the positive electrode active material is at most / J.
- Equation 1 becomes 0. 97 ⁇ x ⁇ l. 1, 0. 05 ⁇ y ⁇ 0. 35, 0. 005 ⁇ z ⁇ 0. 1, 0. 0001 ⁇ v ⁇ 0. 05, and 0. 0001 It is required to satisfy ⁇ w ⁇ 0.05.
- the range of X representing the Li content is a value before charge / discharge (that is, immediately after the synthesis of the composite oxide). The value of X changes beyond the above range due to battery charge / discharge.
- the y value force representing the Co content is less than 0.05, the effect of improving the thermal stability of the positive electrode active material cannot be obtained, and if it exceeds 0.35, the lithium nickel oxide originally has The advantages of high capacity cannot be utilized.
- the preferred range of y-values is 0.10 ⁇ y ⁇ 0.30, even better! /, Range ⁇ to 0. 12 ⁇ y ⁇ 0.20.
- the z-value power representing Al content is less than 0.005, the effect of improving the thermal stability of the positive electrode active material cannot be obtained, and if it exceeds 0.1, the lithium nickel oxide originally has The advantage of high capacity cannot be utilized.
- a preferable range of the z value is 0.01 ⁇ z ⁇ 0.08, and a more preferable range is 0.02 ⁇ 0.06.
- V value representing the content of the element Ml is less than 0.0001, the effect of improving the crystal stability during charging of the positive electrode active material cannot be obtained, and if it exceeds 0.05, lithium nickel acid It is not possible to take advantage of the high capacity inherent in the product.
- a preferable range of the V value is 0.0 005 ⁇ v ⁇ 0.02, more preferably! /, And a range of 0.0015 ⁇ 0.015.
- w value representing the content of the element Micromax 2 is less than 0.0001, the effect of improving the crystallinity stability that put upon the positive electrode active material charged is not obtained, while if more than 0.05, the lithium nickel The advantage of high capacity inherent in oxides cannot be utilized.
- the preferred range for the w value is 0.0005 ⁇ w ⁇ 0.2, and the preferred range is 0 / 0015 ⁇ w ⁇ 0.015.
- the element M 1 is at least one selected from the group consisting of Mn, Ti, Y, Nb, Mo, and W. These may be contained alone in the positive electrode active material or in combination of two or more.
- elements M 2 is a so-called alkaline-earth metals, at least two species selected from Mg, Ca, the group consisting of Sr and Ba.
- the positive electrode active material contains Mg and Ca as essential elements at the same time. That is, the positive electrode active material may include a Yogu further to Sr and Z or Ba may contain only Mg and Ca as the element M 2.
- Proportions of the essential elements occupying the element M 2 is desirably 50 atomic 0/0 above. Since the ionic radii of Mg and Ca are closer to the ionic radius of Ni, it is thought that the stability of the crystal is improved by containing more Mg and Ca.
- the ratio of the content of the element M 1 to the content of the element M 2 : vZw preferably satisfies 0.1.l ⁇ vZw ⁇ 10.
- Mg and Ca enhances the effect of improving crystal stability. It is preferable that the number of Mg atoms wl and the number of Ca atoms w2 contained in the positive electrode active material satisfy the relationship 2 ⁇ wlZw2 ⁇ 20. It is more preferable to satisfy the relationship 5 ⁇ wlZw2 ⁇ 15. Mg ion radius is closer to Ni ion radius, so C It is considered that the stability of the crystal containing more Mg than a is improved.
- the Li occupation ratio is preferably 97.0% or more.
- Li occupancy is the Li site in the Li layer in the crystal structure of LiNiO.
- Li occupancy can be obtained by Rietveld analysis.
- Rietveld analysis is a technique that assumes a crystal structure model and refines the X-ray diffraction pattern, which also derives the crystal structure model force, to match the measured X-ray diffraction pattern.
- refinement refers to changing various parameters (such as lattice constant and Li occupancy) of the crystal structure model along the measured X-ray diffraction pattern.
- Composite Sani ⁇ used as a positive electrode active material in the present invention from the viewpoint of improving the storage properties, BET specific surface area force is measured by a nitrogen gas adsorption 0. 2m 2 Zg above, 1. 5 m 2 Zg than is desired to be lower, 0. 4m 2 Zg above, it is particularly desirable 1. is 3m 2 Zg below.
- the average particle size of the primary particles of the composite oxide is controlled to be 0.1 ⁇ m or more and 3 ⁇ m or less, and the average particle size of the secondary particles formed by aggregation of the primary particles is 8 / zm. As above, it is necessary to control to 20 / zm or less. By controlling the particle size in this way, the composite oxide has an appropriate specific surface area, side reactions occurring at the interface between the positive electrode active material and the non-aqueous electrolyte are suppressed, and the high-temperature storage characteristics are greatly improved. Is done.
- the average particle size of the primary particles is less than 0.1 ⁇ m, the specific surface area of the composite oxide is too large, and side reactions that occur at the interface between the positive electrode active material and the non-aqueous electrolyte are suppressed. It becomes difficult.
- the average primary particle size exceeds 3 m, the primary particles cannot form secondary particles.
- a preferable range of the average particle diameter of the primary particles is 0.3 m or more and 2 ⁇ m or less.
- the average particle size of the secondary particles is less than 8 ⁇ m, the specific surface area of the positive electrode active material becomes too large, and it becomes difficult to suppress side reactions that occur at the interface between the positive electrode active material and the non-aqueous electrolyte. If the average particle size of the secondary particles exceeds 20 m, it will be difficult to obtain sufficient charge / discharge characteristics. .
- a preferable range of the average particle diameter of the secondary particles is 10 / zm or more and 15 m or less.
- the tap density of the composite Sani ⁇ is, 2. 2g / cm 3 or more, 2. 8g / cm 3 preferably be less that instrument 2. 3 g / cm 3 or more, 2. 7g / cm 3
- a hydroxide compound represented by the formula 2: Ni Co M 1 M 2 (OH) is prepared (step a).
- a hydroxide is prepared as a precursor, which is converted to the desired oxide.
- A1 is contained in the hydroxide, it is extremely difficult to control the particle size of the complex oxide as described above. Therefore, it becomes impossible to obtain a positive electrode active material excellent in high-temperature storage characteristics.
- a compound containing A1 is added to the hydroxide compound to obtain a first formulation (step b).
- the obtained first compound is fired in an oxidizing atmosphere to form a first acid compound (step c).
- a compound containing Li is added to the first acid compound to obtain a second compound (step d).
- the obtained second compound is fired in an oxidizing atmosphere to form a lithium-containing composite oxide (second oxide) represented by Formula 1 (step e).
- a positive electrode active material having an average primary particle size of 0.1 ⁇ m or more and 3 ⁇ m or less and an average secondary particle size of 8 ⁇ m or more and 20 ⁇ m or less. The substance can be easily obtained.
- a composite oxide having a BET specific surface area force of 0.2 m 2 Zg or more and 1.5 m 2 Zg or less measured by nitrogen gas adsorption can be easily obtained. It is also easy to control the tap density of the composite oxide to 2.2 g / cm 3 or more and 2.8 g / cm 3 or less.
- the average particle diameter (D1) of the primary particles of the composite oxide can be determined, for example, in the following manner. First, the cured product obtained by hardening the positive electrode active material with epoxy resin is cut with a focused ion beam (FIB) or the like. Observe the cut surface with a secondary ion microscope (SIM) and The secondary ion image of the particle is measured. The maximum diameter (maximum width: D) and the minimum diameter (minimum width: D) are obtained for any 100 primary particles observed at that time, and the average value of them is obtained.
- FIB focused ion beam
- SIM secondary ion microscope
- those having a small particle size are likely not cut along the diameter of the primary particles that are substantially spherical. Therefore, it is preferable not to include particles smaller than a predetermined particle size in arbitrary 100 primary particles for which an average value is obtained. Specifically, in the measured particle size data (particle size distribution) of primary particles, it is preferable to use only 30% of the data from the larger particle size to obtain the average particle size.
- the average particle diameter (D2) of the secondary particles can be obtained as a volume-based median diameter, for example, by analyzing the composite oxide using a laser diffraction particle size distribution analyzer.
- the method for preparing the hydroxide compound represented by Formula 2 is not particularly limited, but in the raw material aqueous solution in which the Ni compound, the Co compound, the element M 1 compound, and the element M 2 compound are dissolved, A coprecipitation method in which an aqueous alkaline solution is poured to precipitate the hydroxide is preferred. Next, the coprecipitation method will be explained.
- Ni compound nickel sulfate, nickel nitrate, nickel chloride and the like can be used. These may be used alone or in combination. Of these, nickel sulfate is particularly preferred.
- Co compound cobalt sulfate, cobalt nitrate, salt salt, etc. can be used. These may be used alone or in combination. Of these, cobalt sulfate is particularly preferable.
- the compound of an element M 1 can be used sulfates, nitrates, etc. Shioi ⁇ .
- manganese sulfate, manganese salt, manganese nitrate and the like can be used for the Mn compound, and manganese sulfate is particularly preferable.
- Ti compounds include basic titanium sulfate and titanium tetrachloride. In particular, basic titanium sulfate is preferable.
- As the Y compound yttrium nitrate or the like can be used.
- Nb compound niobium nitrate, potassium niobate, or the like can be used.
- Mo compound sodium molybdate or ammonium molybdate can be used.
- W compound sodium tungstate or ammonium tandasterate can be used.
- a double salt containing a plurality of elements M 1 may be used.
- [0045] to be a compound of an element M 2 it can be used sulfates, nitrates, and carbonates.
- magnesium sulfate, magnesium nitrate, magnesium chloride, magnesium magnesium, magnesium acetate, etc. can be used as the Mg compound.
- Ca compound calcium hydroxide, calcium chloride and the like can be used.
- Sr compound strontium hydroxide, strontium chloride, or the like can be used.
- Ba compound barium hydroxide, barium chloride and the like can be used.
- a double salt containing a plurality of elements M 2 may be used.
- the alkali concentration of the aqueous alkaline solution poured into the raw material aqueous solution in which the Ni compound, Co compound, element M 1 compound and element M 2 compound are dissolved is, for example, 10 to 50% by weight.
- Examples of the alkali to be dissolved in the alkaline aqueous solution include sodium hydroxide, potassium hydroxide, lithium hydroxide, and the like.
- the temperature of the raw material aqueous solution and the alkaline aqueous solution is not particularly limited, but is, for example, 20 to 60 ° C.
- the raw material aqueous solution, pH of the aqueous solution is, for example, 10. so that the 5 above, when continuously dropped alkaline aqueous solution, Ni, Co, is a co-precipitate of elemental M 1 and the element M 2 A hydroxide is obtained.
- this hydroxide is filtered, washed with water and dried, the hydroxide represented by Formula 2 is obtained.
- the average particle size of the secondary particles of hydroxide generated at this time is approximately 8 to 20 m.
- the average particle size of the secondary particles of hydroxide can be controlled by changing conditions such as the pH during the reaction and the dropping rate of the raw material liquid.
- the raw material aqueous solution contains A1 ions, it is difficult to produce a hydroxide having an average secondary particle size of 8 m or more.
- Step b A compound containing A1 is added to the hydroxide represented by formula 2 obtained in step a.
- A1 to the hydroxide, it is possible to control the particle diameters of the primary particles and secondary particles of the composite oxide to be finally produced within a desired range.
- the BET specific surface area and tap density can be easily controlled.
- the compound containing A1 may be added by any method, but it is preferable to uniformly attach A1 to the surface of the hydroxide represented by formula 2.
- A1 may be uniformly attach to the surface of the hydroxide represented by formula 2.
- NaAlO is added to the hydroxide represented by Formula 2 being stirred in water, and then the pH of the water is adjusted to 10 to 10 using an acid.
- hydroxyaluminum or basic hydroxyaluminum as a compound containing A1 is uniformly deposited on the surface of the hydroxide represented by Formula 2. Can be made.
- hydroxide-aluminum As a compound containing A1 in the hydroxide compound represented by Formula 2, hydroxide-aluminum, acid-aluminum, aluminum nitrate, Just mix aluminum fluoride, salt or aluminum! /.
- the hydroxide containing the compound containing A1 (first compound) is calcined in an oxidizing atmosphere (for example, in air or oxygen).
- the firing is preferably performed at 500 ° C or higher and 1100 ° C or lower, more preferably 600 ° C or higher and 1000 ° C or lower.
- the firing time is preferably a force depending on the firing temperature, for example, 1 to 10 hours.
- a compound containing Li is added to the oxide (first oxide) obtained by the above baking.
- the compound containing Li may be added by any method.
- the first oxide and the compound containing Li may be mixed.
- lithium carbonate, lithium hydroxide, lithium nitrate, lithium sulfate, lithium oxide, or the like can be used.
- lithium carbonate and lithium hydroxide are the most advantageous in terms of environment and cost.
- the average particle size of the lithium-containing compound is preferably 5 m or less. If the average particle size of the compound containing lithium is too large, the reaction may not proceed uniformly.
- the first oxide compound (second compound) to which a compound containing Li is added is calcined in an oxidizing atmosphere (for example, in air or oxygen).
- the firing is preferably performed at 600 ° C or higher and 850 ° C or lower, more preferably 700 ° C or higher and 800 ° C or lower.
- the firing time is preferably a force depending on the firing temperature, for example, 5 to 72 hours.
- Firing is preferably performed in two stages. It is preferable to perform preliminary firing at 400 ° C or higher and 550 ° C or lower, for example, for about 1 to 10 hours, followed by firing at 700 ° C or higher and 800 ° C or lower. According to such a two-stage firing method, an active material with high crystallinity can be obtained, and unreacted residue can be reduced.
- a positive electrode active material composed of a complex oxide having a secondary particle size of 3 ⁇ m or less and an average secondary particle size of 8 ⁇ m or more and 20 ⁇ m or less.
- the nonaqueous electrolyte secondary battery of the present invention is characterized by a positive electrode active material, and other components are not particularly limited.
- the positive electrode is usually composed of a positive electrode core material and a positive electrode mixture supported thereon.
- the positive electrode mixture can contain a binder, a conductive agent and the like in addition to the positive electrode active material.
- the binder is not particularly limited in the force for which rubber particles such as fluorine resin such as polyvinylidene fluoride and polytetrafluoroethylene, and modified tali-tolyl rubber are preferably used.
- the conductive agent carbon black such as acetylene black and ketjen black, and various graphites are preferably used, but are not particularly limited.
- the negative electrode is usually composed of a negative electrode core material and a negative electrode mixture supported thereon.
- the negative electrode mixture generally contains a negative electrode active material and a binder, and optionally contains a conductive agent and the like.
- the negative electrode active material include various natural graphites, various artificial graphites, carbon materials such as amorphous carbon, silicon-containing composite materials such as silicides, and various alloy materials.
- the binder is not particularly limited in force, in which fluorine particles such as polyvinylidene fluoride and modified polyvinylidene fluoride, and rubber particles such as styrene butadiene rubber are preferably used.
- the conductive agent the same as the positive electrode can be used.
- the separator is made of a polyolefin resin such as polyethylene or polypropylene.
- the force with which a microporous film is common is not particularly limited.
- the microporous film may be a single layer film made of one kind of polyolefin resin or a multilayer film made of two or more kinds of polyolefin resin.
- Non-aqueous solvents include, but are not limited to, ethylene carbonate, propylene carbonate, dimethyl carbonate, jetyl carbonate, ethyl methyl carbonate, and y butyrolataton.
- the non-aqueous solvent is preferably used in combination of two or more.
- lithium salts include lithium hexafluorophosphate (LiPF) and lithium tetrafluoroborate (LiBF).
- the non-aqueous electrolyte preferably contains beylene carbonate, cyclohexyl benzene, diphenyl ether or the like as an additive.
- composite oxides having the compositions and physical properties of Nos. 1 to 31 shown in Tables 1 to 4 were prepared as positive electrode active materials, and batteries 1 to 31 were produced using these.
- Nickel sulfate was prepared cobalt sulfate, element M 1 salt, and the elements M 2 a metal salt aqueous solution prepared by dissolving a salt.
- concentration of nickel sulfate in the metal salt aqueous solution was ImolZL, and the concentrations of other salts were adjusted as appropriate according to Table 1.
- the aqueous metal salt solution under stirring was maintained at 50 ° C., and an aqueous solution containing 30% by weight of sodium hydroxide was added dropwise to adjust the pH to 12 to precipitate a hydroxide.
- the precipitate of hydroxide was filtered, washed with water and dried in air.
- the salt of the element M 1, respectively manganese sulfate, basic titanium sulfate, yttrium nitrate, potassium dichromate O Bed acid, using sodium molybdate, and sodium tungstate.
- the elemental M 2 salt uses magnesium sulfate and calcium sulfate, respectively, in a molar ratio of 9: 1.
- the hydroxide carrying the compound containing A1 (first blend) was calcined at 700 ° C. for 10 hours in an air atmosphere to obtain the first oxide.
- lithium hydroxide Li: in (Ni + Co + Al + element element M 2) Teal Le ratio of 1 were mixed so that 1, to obtain a second blend.
- the second compound was heated to 750 ° C. for 10 hours in an oxygen atmosphere using an electric furnace and baked at 750 ° C. for 36 hours to synthesize a positive electrode active material.
- the average particle diameter D1 of the primary particles of the composite oxide or the average particle diameter of the secondary particles can be changed by changing the synthesis conditions of the raw material hydroxide and the firing temperature of the second compound. D2 was changed.
- a predetermined positive electrode active material 4 parts by weight of acetylene black as a conductive material and 5 parts by weight of polyvinylidene fluoride (PVDF) as a binder in a solvent of N-methylpyrrolidone (NMP) are dissolved.
- PVDF polyvinylidene fluoride
- NMP N-methylpyrrolidone
- FIG. 1 is a perspective view in which a part of the prismatic battery manufactured in this example is cut out.
- the battery was assembled as follows. First, an electrode group 1 was constructed by winding a predetermined positive electrode and the negative electrode together with a 20 m thick microporous polyethylene resin separator interposed therebetween. An aluminum positive electrode lead 2 and a nickel negative electrode lead 3 were welded to the positive electrode and the negative electrode, respectively. An insulating ring (not shown) made of polyethylene resin was attached to the top of the electrode plate group 1 and housed in an aluminum battery case 4. The other end of the positive electrode lead 2 was spot welded to the aluminum sealing plate 5. The other end of the negative electrode lead 3 was spot welded to the lower part of the nickel negative electrode terminal 6 surrounded by the insulating resin 7 at the center of the sealing plate 5.
- nonaqueous electrolyte After laser welding the opening end of the battery case 4 and the peripheral edge of the sealing plate 5, a predetermined amount of nonaqueous electrolyte was also injected into the injection locus provided on the sealing plate.
- non-aqueous electrolytes a mixture of ethylene carbonate and ethylmethyl carbonate in a volume ratio of 1: 3 was added with lwt% of behylene carbonate.
- Mn Mg Ca 1 0.05 0.03 0.005 0.005
- Example 9 Mn Mg, Ca 1 0.10 0.03 0.005 0.005
- Example 10 Mn Mg, Ca 1 0.12 0.03 0.005 0.005
- Example 1 Mn Mg, Ca 1 0.20 0.03 0.005 0.005
- Example 12 Mn Mg, Ca 1 0.30 0.03 0.005 0.005
- D1 Average particle size of primary particles (m)
- D2 Average particle size of secondary particles (m)
- Nickel sulfate was prepared cobalt sulfate, aluminum sulfate, element M 1 salt, and the elements M 2 a metal salt aqueous solution prepared by dissolving a salt.
- the concentration of nickel sulfate in the aqueous metal salt solution was ImolZL, and the concentrations of other salts were adjusted as appropriate according to Table 5.
- the aqueous metal salt solution under stirring was maintained at 50 ° C., and an aqueous solution containing 30% by weight of sodium hydroxide was added dropwise thereto so as to have a pH of 12 to precipitate a hydroxide.
- the precipitate of hydroxide was filtered, washed with water and dried in air.
- the salt of the element M respectively manganese sulfate, basic titanium sulfate, yttrium nitrate, potassium dichromate O Bed acid, using sodium molybdate, and sodium tungstate.
- element M 2 salt magnesium sulfate and calcium sulfate were used in a molar ratio of 9: 1, respectively.
- a composite oxide was prepared in the same manner as in Example 1 except that the composition and physical properties of the positive electrode active material were changed as shown in Nos. 38 to 45 shown in Tables 7 and 8. Similarly, batteries 38 to 45 were produced.
- a composite oxide was prepared in the same manner as in Example 1 except that the composition and physical properties of the positive electrode active material were changed as shown in Nos. 46 to 53 shown in Tables 9 and 10.
- Example 1 In the same manner, batteries 46 to 53 were produced.
- a composite oxide was prepared in the same manner as in Example 1 except that the composition and physical properties of the positive electrode active material were changed as shown in Nos. 54 to 60 shown in Tables 11 and 12. Similarly, batteries 54-60 were produced.
- Example 54 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 1.1
- Example 55 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 2.0
- Example 56 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 5.1
- Example 57 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 10.2
- Example 58 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 15.0
- Example 59 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 20.0
- Example 60 Mn Mg, Ca 1 0.15 0.03 0.005 0.005 35.6 [0088] [Table 12]
- a composite oxide was prepared in the same manner as in Example 1 except that the composition and physical properties of the positive electrode active material were changed as shown in Nos. 61 to 65 shown in Tables 13 and 14. Similarly, batteries 61 to 65 were produced.
- a composite oxide was prepared in the same manner as in Example 1 except that the composition and physical properties of the positive electrode active material were changed as shown in Nos. 66 to 67 shown in Tables 15 and 16. Similarly, batteries 66 to 67 were produced.
- a composite oxide was prepared in the same manner as in Example 1 except that the composition and physical properties of the positive electrode active material were changed as shown in Nos. 68 to 72 shown in Tables 17 and 18. Similarly, batteries 68 to 72 were produced.
- a cured product obtained by hardening the positive electrode active material with epoxy resin was cut with a focused ion beam (FIB).
- the cut surface was observed with a secondary ion microscope (SIM), and the secondary ion images of the composite oxide particles were measured. And for any 100 primary particles, the maximum diameter (D) and minimum
- the particle size distribution of the positive electrode active material was measured with a laser diffraction particle size distribution analyzer (LA-910, manufactured by Horiba, Ltd.), and the volume-based median diameter (D50) was determined. The diameter.
- the tapping stroke length was 2.5 cm, and the tap density when tapping 1000 times was obtained.
- the first cycle charge / discharge was performed under the following conditions (1), and the discharge capacity (C) per gram of the positive electrode active material was determined.
- Constant current charging Maximum current 600mA, end-of-charge voltage 4.2V
- charge and discharge in the second cycle is performed at the ambient temperature of 20 ° C under the following conditions (2), and the discharge capacity per lg of the positive electrode active material (C) at a discharge current of 1000 mA
- Constant current charging Maximum current 600mA, end-of-charge voltage 4.2V Constant voltage charging: Voltage value 4.2V, charging period 2 hours
- the percentage of discharge capacity (C) per lg of active material was determined as a percentage and used as the discharge load characteristic.
- charge / discharge at the third cycle is performed under the above condition (2) at an ambient temperature of 20 ° C.
- the environment is changed under the following condition (3).
- the 4th cycle was charged at a temperature of 20 ° C.
- Constant current charging Maximum current value 600mA, end-of-charge voltage 4.4V
- the battery After charging, the battery was disassembled, the positive electrode mixture was taken out from the positive electrode, and 2 mg of the mixture was placed in SUS PAN. Using a differential scanning calorimeter (DSC), the calorific value, which is an index of thermal stability of the positive electrode mixture, was measured. For measurement, RIGAKU Thermo Plus manufactured by Rigaku Corporation was used. The temperature was raised in the air atmosphere from room temperature to 400 ° C at a rate of 10 ° CZ, and the first exothermic temperature was obtained.
- DSC differential scanning calorimeter
- Constant current charging Maximum current 600mA, end-of-charge voltage 4.2V
- Constant voltage charging Voltage value 4.2V, charging period 2 hours After charging, the battery was stored in a constant temperature bath at 60 ° C for 30 days. The battery after storage was discharged in the fourth cycle under the following condition (5).
- charging / discharging at the fifth cycle was performed at the ambient temperature of 20 ° C. under the following condition (6), and the discharge capacity (C) per lg of the positive electrode active material at the fifth cycle was determined.
- Constant current charging Maximum current value 600mA, end-of-charge voltage 4.2V
- the ratio of 1000-5th was obtained as a percentage and used as high temperature storage characteristics. Thus, the recovery characteristics after high temperature storage were estimated.
- Figure 2 shows the relationship between the y value representing the Co content, the discharge capacity, and the heat generation start temperature.
- the discharge capacity is preferably a heat generation starting temperature of 200 mA or more, which is desirably maintained at 170 mAh / g or more.
- the y value should be 0.05.5 ⁇ y ⁇ 0.35, preferably 0.10 ⁇ y ⁇ 0.30, more preferably 0.12 ⁇ y ⁇ 0.20. I can help you. [0113] [Consideration on z-value]
- Fig. 3 shows the relationship between the z value representing the A1 content, the discharge capacity, and the heat generation start temperature.
- Fig. 3 Forces, z value ⁇ or 0.75 to ⁇ ⁇ 0. 1
- There is a necessary force S preferably ⁇ or 0, 01 ⁇ ⁇ ⁇ 0.08, more preferably 0.02 ⁇ ⁇ ⁇ 0 Power to be 06 S power.
- Figure 4 shows the relationship between the X value representing the Li content, discharge capacity, and high-temperature storage characteristics based on batteries 68-72. From the capacity point of view, it can be seen that the X value needs to be 0.97 or more. Similarly, from this result, it can be seen that the occupation ratio of Li is preferably 97% or more. On the other hand, it can be seen that the high temperature storage characteristics should be 80% or more, and the X value should be 1.1 or less. If the X value exceeds 1.1, side reactions during high-temperature storage are considered to increase with an increase in the amount of excess Li.
- the battery 61, 62 without the element M 2, batteries 1-6 of Example was added Mg, and Ca as the element M 2, Mg as the element M 2, Ca, batteries of embodiment in which ⁇ Ka ⁇ the Sr 66, the battery 67 of the embodiment described ⁇ Ka ⁇ Mg, Ca, and Ba as the element M 2 are both show a high capacity retention ratio and high-temperature storage characteristics, Rukotogawa; ⁇ Ru.
- the present invention provides a non-aqueous electrolyte secondary battery that has a high capacity, has both cycle characteristics and high-temperature storage characteristics, and is excellent in discharge load characteristics.
- Non-aqueous electrolyte secondary batteries can be used as a power source in a wide range of applications, from portable electronic devices that require high performance to electric vehicles and hybrid vehicles.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800050485A CN101120464B (zh) | 2005-04-28 | 2006-04-17 | 非水电解液二次电池 |
US11/794,579 US7981546B2 (en) | 2005-04-28 | 2006-04-17 | Non-aqueous electrolyte secondary battery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005133135A JP4781004B2 (ja) | 2005-04-28 | 2005-04-28 | 非水電解液二次電池 |
JP2005-133135 | 2005-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006118013A1 true WO2006118013A1 (ja) | 2006-11-09 |
Family
ID=37307815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/308048 WO2006118013A1 (ja) | 2005-04-28 | 2006-04-17 | 非水電解液二次電池 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7981546B2 (ja) |
JP (1) | JP4781004B2 (ja) |
KR (1) | KR100935987B1 (ja) |
CN (1) | CN101120464B (ja) |
WO (1) | WO2006118013A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009016801A1 (ja) * | 2007-07-27 | 2009-02-05 | Panasonic Corporation | リチウムイオン二次電池 |
JP2009054577A (ja) * | 2007-07-27 | 2009-03-12 | Panasonic Corp | リチウムイオン二次電池 |
US20150188136A1 (en) * | 2012-07-12 | 2015-07-02 | Sumitomo Metal Mining Co., Ltd. | Positive electrode active substance for nonaqueous electrolyte secondary cell, method for producing same, and nonaqueous electrolyte secondary cell using positive electrode active substance |
Families Citing this family (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4996117B2 (ja) * | 2006-03-23 | 2012-08-08 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質およびその製造方法とそれを用いた非水系電解質二次電池 |
JP4984593B2 (ja) * | 2006-03-28 | 2012-07-25 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質とその製造方法、および、これを用いた非水系電解質二次電池 |
JP5045135B2 (ja) * | 2007-02-08 | 2012-10-10 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質、その製造方法及びそれを用いた非水系電解質二次電池 |
JP5103923B2 (ja) * | 2007-02-08 | 2012-12-19 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質、その製造方法及びそれを用いた非水系電解質二次電池 |
KR100816206B1 (ko) | 2007-07-16 | 2008-03-28 | 삼성에스디아이 주식회사 | 리튬 이차 전지의 양극 활물질, 그 형성 방법 및 리튬 이차전지 |
JP5341325B2 (ja) * | 2007-07-25 | 2013-11-13 | 日本化学工業株式会社 | リチウム二次電池用正極活物質、その製造方法及びリチウム二次電池 |
JP5251332B2 (ja) * | 2007-07-30 | 2013-07-31 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質およびその製造方法、並びにこれを用いた非水系電解質二次電池 |
JP5640311B2 (ja) | 2007-09-28 | 2014-12-17 | 住友化学株式会社 | リチウム複合金属酸化物および非水電解質二次電池 |
JP2009224307A (ja) * | 2008-02-22 | 2009-10-01 | Sanyo Electric Co Ltd | 非水電解質二次電池及びその製造方法 |
JP5260990B2 (ja) * | 2008-03-11 | 2013-08-14 | 三洋電機株式会社 | 密閉型電池及びその製造方法 |
CN101621125B (zh) * | 2009-02-13 | 2011-03-30 | 成都晶元新材料技术有限公司 | 一种镍钴锰多元掺杂锂离子电池正极材料及其制备方法 |
JP2011023335A (ja) * | 2009-06-18 | 2011-02-03 | Hitachi Maxell Ltd | 非水二次電池用電極および非水二次電池 |
JP5638232B2 (ja) | 2009-12-02 | 2014-12-10 | 住友金属鉱山株式会社 | 非水系電解質二次電池正極活物質用ニッケルコバルトマンガン複合水酸化物粒子とその製造方法、非水系電解質二次電池用正極活物質とその製造方法、および非水系電解質二次電池 |
JP2011187419A (ja) * | 2010-03-11 | 2011-09-22 | Jx Nippon Mining & Metals Corp | リチウムイオン電池用正極、及び、リチウムイオン電池 |
CN102388490B (zh) * | 2010-06-21 | 2014-11-12 | 丰田自动车株式会社 | 锂二次电池 |
WO2011161754A1 (ja) | 2010-06-21 | 2011-12-29 | トヨタ自動車株式会社 | リチウムイオン二次電池 |
JP5477676B2 (ja) | 2010-09-17 | 2014-04-23 | トヨタ自動車株式会社 | リチウムイオン二次電池 |
JP4915488B1 (ja) * | 2011-03-28 | 2012-04-11 | 住友金属鉱山株式会社 | ニッケルマンガン複合水酸化物粒子とその製造方法、非水系電解質二次電池用正極活物質とその製造方法、および非水系電解質二次電池 |
KR101336082B1 (ko) | 2011-05-23 | 2013-12-03 | 주식회사 엘지화학 | 출력 밀도 특성이 향상된 고출력의 리튬 이차전지 |
JP2014514726A (ja) * | 2011-05-23 | 2014-06-19 | エルジー ケム. エルティーディ. | エネルギー密度特性が向上した高エネルギー密度のリチウム二次電池 |
WO2012161476A2 (ko) | 2011-05-23 | 2012-11-29 | 주식회사 엘지화학 | 에너지 밀도 특성이 향상된 고에너지 밀도의 리튬 이차전지 |
WO2012161477A2 (ko) | 2011-05-23 | 2012-11-29 | 주식회사 엘지화학 | 출력 밀도 특성이 향상된 고출력의 리튬 이차전지 |
KR101336083B1 (ko) | 2011-05-23 | 2013-12-03 | 주식회사 엘지화학 | 출력 밀도 특성이 향상된 고출력의 리튬 이차전지 |
KR101336076B1 (ko) | 2011-05-23 | 2013-12-03 | 주식회사 엘지화학 | 출력 밀도 특성이 향상된 고출력의 리튬 이차전지 |
US20170050864A1 (en) * | 2011-05-30 | 2017-02-23 | Sumitomo Metal Mining Co., Ltd. | Positive electrode active material for nonaqueous secondary batteries, method for producing same, and nonaqueous electrolyte secondary battery using positive electrode active material |
WO2012164693A1 (ja) * | 2011-05-31 | 2012-12-06 | トヨタ自動車株式会社 | リチウム二次電池 |
JP5598726B2 (ja) * | 2011-05-31 | 2014-10-01 | トヨタ自動車株式会社 | リチウム二次電池 |
JP5741932B2 (ja) * | 2011-06-01 | 2015-07-01 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質の前駆体となる遷移金属複合水酸化物とその製造方法、及び非水系電解質二次電池用正極活物質の製造方法 |
WO2013009078A2 (ko) | 2011-07-13 | 2013-01-17 | 주식회사 엘지화학 | 에너지 밀도 특성이 향상된 고 에너지 리튬 이차전지 |
CN103050684B (zh) * | 2011-10-14 | 2016-05-04 | 河南科隆集团有限公司 | 一种锂离子电池正极材料及其制备方法 |
CN102694166B (zh) * | 2011-11-23 | 2014-08-13 | 横店集团东磁股份有限公司 | 一种锂镍钴铝复合金属氧化物的制备方法 |
WO2013109038A1 (ko) * | 2012-01-17 | 2013-07-25 | 주식회사 엘지화학 | 양극 활물질 및 이를 포함하고 불순물 혹은 스웰링 제어를 위한 리튬 이차전지와 생산성이 향상된 양극 활물질의 제조방법 |
JP5365711B2 (ja) * | 2012-02-21 | 2013-12-11 | 住友金属鉱山株式会社 | ニッケルコバルトマンガン複合水酸化物及びその製造方法 |
KR101713454B1 (ko) * | 2012-08-28 | 2017-03-07 | 스미토모 긴조쿠 고잔 가부시키가이샤 | 비수계 전해질 이차 전지용 정극 활물질의 제조 방법, 비수계 전해질 이차 전지용 정극 활물질 및 이것을 사용한 비수계 전해질 이차 전지 |
JP2014123529A (ja) * | 2012-12-21 | 2014-07-03 | Jfe Mineral Co Ltd | リチウム二次電池用正極材料 |
CN103050686A (zh) * | 2013-01-24 | 2013-04-17 | 湖南桑顿新能源有限公司 | 一种高密度锂离子电池正极材料镍钴铝酸锂及其制备方法 |
JP6017978B2 (ja) * | 2013-01-24 | 2016-11-02 | トヨタ自動車株式会社 | 正極活物質及び該活物質を用いたリチウム二次電池 |
WO2014181891A1 (ja) | 2013-05-10 | 2014-11-13 | 住友金属鉱山株式会社 | 遷移金属複合水酸化物粒子とその製造方法、非水電解質二次電池用正極活物質とその製造方法および非水電解質二次電池 |
KR101785262B1 (ko) * | 2013-07-08 | 2017-10-16 | 삼성에스디아이 주식회사 | 양극 활물질, 그 제조방법, 이를 채용한 양극 및 리튬이차전지 |
JP5701343B2 (ja) * | 2013-07-10 | 2015-04-15 | 株式会社田中化学研究所 | リチウム二次電池用正極活物質、正極および二次電池 |
JP6508892B2 (ja) * | 2013-09-30 | 2019-05-08 | パナソニック株式会社 | 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 |
CN110739451B (zh) | 2014-01-27 | 2021-05-25 | 住友化学株式会社 | 锂二次电池用正极活性物质、锂二次电池用正极和锂二次电池 |
JP6486653B2 (ja) | 2014-01-31 | 2019-03-20 | パナソニック株式会社 | 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 |
JP6250432B2 (ja) * | 2014-02-24 | 2017-12-20 | チタン工業株式会社 | チタンニオブ複合酸化物電極用活物質及びそれを用いたリチウム二次電池 |
JP6624885B2 (ja) | 2015-02-19 | 2019-12-25 | パナソニック株式会社 | 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 |
JP6768647B2 (ja) | 2015-06-02 | 2020-10-14 | 住友化学株式会社 | リチウム二次電池用正極活物質、リチウム二次電池用正極及びリチウム二次電池 |
US10109854B2 (en) | 2015-09-30 | 2018-10-23 | Panasonic Corporation | Positive electrode active material for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery |
JP6908368B2 (ja) | 2016-02-29 | 2021-07-28 | パナソニック株式会社 | 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 |
JP6341312B2 (ja) * | 2016-03-31 | 2018-06-13 | 日亜化学工業株式会社 | 非水系電解質二次電池用正極活物質の製造方法 |
JP6368022B1 (ja) | 2017-05-31 | 2018-08-01 | 住友化学株式会社 | リチウム二次電池用正極活物質、リチウム二次電池用正極及びリチウム二次電池 |
WO2019044204A1 (ja) * | 2017-08-30 | 2019-03-07 | パナソニックIpマネジメント株式会社 | 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 |
JP6749884B2 (ja) * | 2017-12-05 | 2020-09-02 | Jfeミネラル株式会社 | リチウム二次電池用正極材料 |
JP7126173B2 (ja) * | 2017-12-26 | 2022-08-26 | パナソニックIpマネジメント株式会社 | 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 |
CN109455772B (zh) * | 2017-12-28 | 2020-01-10 | 北京当升材料科技股份有限公司 | 一种改性的锂离子电池用前驱体、正极材料及该前驱体和正极材料的制备方法 |
WO2020110590A1 (ja) | 2018-11-28 | 2020-06-04 | パナソニックIpマネジメント株式会社 | 非水電解質二次電池用正極活物質、非水電解質二次電池用正極活物質の製造方法及び非水電解質二次電池 |
WO2020158420A1 (ja) | 2019-01-30 | 2020-08-06 | パナソニックIpマネジメント株式会社 | 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 |
JPWO2020262348A1 (ja) * | 2019-06-27 | 2020-12-30 | ||
EP4037029B1 (en) * | 2019-09-27 | 2024-02-21 | Panasonic Intellectual Property Management Co., Ltd. | Positive electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery |
WO2021235131A1 (ja) | 2020-05-22 | 2021-11-25 | パナソニックIpマネジメント株式会社 | 非水電解質二次電池 |
JPWO2022091939A1 (ja) | 2020-10-29 | 2022-05-05 | ||
EP4239743A1 (en) | 2020-10-30 | 2023-09-06 | Panasonic Intellectual Property Management Co., Ltd. | Nonaqueous electrolyte secondary battery |
CN116508174A (zh) | 2020-10-30 | 2023-07-28 | 松下知识产权经营株式会社 | 非水电解质二次电池 |
EP4254557A4 (en) | 2020-11-30 | 2024-05-01 | Panasonic Intellectual Property Management Co., Ltd. | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY |
EP4253328A4 (en) | 2020-11-30 | 2024-05-15 | Panasonic Intellectual Property Management Co., Ltd. | POSITIVE ELECTRODE FOR SECONDARY BATTERY WITH ANHYDROUS ELECTROLYTE AND SECONDARY BATTERY WITH ANHYDROUS ELECTROLYTE |
CN116490990A (zh) | 2020-11-30 | 2023-07-25 | 松下知识产权经营株式会社 | 非水电解质二次电池 |
WO2022114231A1 (ja) | 2020-11-30 | 2022-06-02 | パナソニックIpマネジメント株式会社 | 非水電解質二次電池 |
JPWO2022138104A1 (ja) | 2020-12-25 | 2022-06-30 | ||
EP4366015A1 (en) | 2021-06-30 | 2024-05-08 | Panasonic Intellectual Property Management Co., Ltd. | Nonaqueous electrolyte secondary battery |
CN117597809A (zh) | 2021-06-30 | 2024-02-23 | 松下知识产权经营株式会社 | 非水电解质二次电池 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09274917A (ja) * | 1996-04-04 | 1997-10-21 | Matsushita Electric Ind Co Ltd | 非水電解質リチウム二次電池 |
JPH1145707A (ja) * | 1997-05-27 | 1999-02-16 | Tdk Corp | 非水電解質電池用電極の製造方法 |
JPH11246225A (ja) * | 1997-10-30 | 1999-09-14 | Samsung Display Devices Co Ltd | リチウム複合酸化物およびその製造方法並びにリチウム複合酸化物を活物質とする陽極を有するリチウムイオン二次電池 |
JP2000030693A (ja) * | 1998-07-10 | 2000-01-28 | Sumitomo Metal Mining Co Ltd | 非水系電解質二次電池用正極活物質およびその製造方法 |
JP2001110413A (ja) * | 1999-10-01 | 2001-04-20 | Mitsui Mining & Smelting Co Ltd | リチウム二次電池用正極材料及びこれを用いたリチウム二次電池 |
JP2003308827A (ja) * | 2002-04-12 | 2003-10-31 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
JP2004087487A (ja) * | 2002-08-05 | 2004-03-18 | Matsushita Electric Ind Co Ltd | 正極活物質およびこれを含む非水電解質二次電池 |
JP2004111076A (ja) * | 2002-09-13 | 2004-04-08 | Sony Corp | 正極活物質及び非水電解質二次電池 |
JP2004171961A (ja) * | 2002-11-20 | 2004-06-17 | Sumitomo Metal Mining Co Ltd | リチウム二次電池正極活物質およびリチウム二次電池 |
JP2004311297A (ja) * | 2003-04-09 | 2004-11-04 | Mitsubishi Chemicals Corp | 粉体状リチウム二次電池正極材料、リチウム二次電池正極、及びリチウム二次電池 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2547992B2 (ja) | 1986-11-08 | 1996-10-30 | 旭化成工業株式会社 | 非水系二次電池 |
JP3244314B2 (ja) | 1991-11-13 | 2002-01-07 | 三洋電機株式会社 | 非水系電池 |
US5631105A (en) * | 1995-05-26 | 1997-05-20 | Matsushita Electric Industrial Co., Ltd. | Non-aqueous electrolyte lithium secondary battery |
AU7452398A (en) | 1997-05-27 | 1998-12-30 | Tdk Corporation | Method of producing electrode for non-aqueous electrolytic cells |
JP4016453B2 (ja) | 1997-07-18 | 2007-12-05 | 株式会社日立製作所 | 電極及びこれを用いた電池 |
JP4052810B2 (ja) | 2000-04-26 | 2008-02-27 | 三菱化学株式会社 | リチウム二次電池 |
US8241790B2 (en) * | 2002-08-05 | 2012-08-14 | Panasonic Corporation | Positive electrode active material and non-aqueous electrolyte secondary battery containing the same |
CN100466341C (zh) * | 2002-08-08 | 2009-03-04 | 松下电器产业株式会社 | 非水电解质二次电池用正极活性物质及其制造方法 |
CN100420087C (zh) | 2003-06-23 | 2008-09-17 | 比亚迪股份有限公司 | 层叠式锂离子二次电池 |
CN1294665C (zh) * | 2003-08-15 | 2007-01-10 | 比亚迪股份有限公司 | 非水二次电池用正极活性材料、其制备方法以及使用该材料的非水二次电池 |
US20040191161A1 (en) * | 2002-11-19 | 2004-09-30 | Chuanfu Wang | Compounds of lithium nickel cobalt metal oxide and the methods of their fabrication |
-
2005
- 2005-04-28 JP JP2005133135A patent/JP4781004B2/ja active Active
-
2006
- 2006-04-17 CN CN2006800050485A patent/CN101120464B/zh active Active
- 2006-04-17 US US11/794,579 patent/US7981546B2/en active Active
- 2006-04-17 KR KR1020077018823A patent/KR100935987B1/ko not_active IP Right Cessation
- 2006-04-17 WO PCT/JP2006/308048 patent/WO2006118013A1/ja active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09274917A (ja) * | 1996-04-04 | 1997-10-21 | Matsushita Electric Ind Co Ltd | 非水電解質リチウム二次電池 |
JPH1145707A (ja) * | 1997-05-27 | 1999-02-16 | Tdk Corp | 非水電解質電池用電極の製造方法 |
JPH11246225A (ja) * | 1997-10-30 | 1999-09-14 | Samsung Display Devices Co Ltd | リチウム複合酸化物およびその製造方法並びにリチウム複合酸化物を活物質とする陽極を有するリチウムイオン二次電池 |
JP2000030693A (ja) * | 1998-07-10 | 2000-01-28 | Sumitomo Metal Mining Co Ltd | 非水系電解質二次電池用正極活物質およびその製造方法 |
JP2001110413A (ja) * | 1999-10-01 | 2001-04-20 | Mitsui Mining & Smelting Co Ltd | リチウム二次電池用正極材料及びこれを用いたリチウム二次電池 |
JP2003308827A (ja) * | 2002-04-12 | 2003-10-31 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
JP2004087487A (ja) * | 2002-08-05 | 2004-03-18 | Matsushita Electric Ind Co Ltd | 正極活物質およびこれを含む非水電解質二次電池 |
JP2004111076A (ja) * | 2002-09-13 | 2004-04-08 | Sony Corp | 正極活物質及び非水電解質二次電池 |
JP2004171961A (ja) * | 2002-11-20 | 2004-06-17 | Sumitomo Metal Mining Co Ltd | リチウム二次電池正極活物質およびリチウム二次電池 |
JP2004311297A (ja) * | 2003-04-09 | 2004-11-04 | Mitsubishi Chemicals Corp | 粉体状リチウム二次電池正極材料、リチウム二次電池正極、及びリチウム二次電池 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009016801A1 (ja) * | 2007-07-27 | 2009-02-05 | Panasonic Corporation | リチウムイオン二次電池 |
JP2009054577A (ja) * | 2007-07-27 | 2009-03-12 | Panasonic Corp | リチウムイオン二次電池 |
US20150188136A1 (en) * | 2012-07-12 | 2015-07-02 | Sumitomo Metal Mining Co., Ltd. | Positive electrode active substance for nonaqueous electrolyte secondary cell, method for producing same, and nonaqueous electrolyte secondary cell using positive electrode active substance |
US10084188B2 (en) * | 2012-07-12 | 2018-09-25 | Sumitomo Metal Mining Co., Ltd. | Positive electrode active substance for nonaqueous electrolyte secondary cell, method for producing same, and nonaqueous electrolyte secondary cell using positive electrode active substance |
Also Published As
Publication number | Publication date |
---|---|
CN101120464A (zh) | 2008-02-06 |
CN101120464B (zh) | 2010-05-19 |
US20090035659A1 (en) | 2009-02-05 |
US7981546B2 (en) | 2011-07-19 |
KR20070097115A (ko) | 2007-10-02 |
JP2006310181A (ja) | 2006-11-09 |
KR100935987B1 (ko) | 2010-01-08 |
JP4781004B2 (ja) | 2011-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4781004B2 (ja) | 非水電解液二次電池 | |
JP6627241B2 (ja) | 非水系電解質二次電池用正極活物質とその製造方法、および、非水系電解質二次電池 | |
JP4070585B2 (ja) | リチウム含有複合酸化物およびそれを用いた非水二次電池 | |
JP5030123B2 (ja) | リチウム二次電池 | |
JP6167822B2 (ja) | 非水系電解質二次電池用正極活物質とその製造方法、およびこれを用いた非水系電解質二次電池 | |
JP5079291B2 (ja) | 非水電解質二次電池 | |
JP2006351378A (ja) | リチウムイオン二次電池 | |
JP4813450B2 (ja) | リチウム含有複合酸化物およびそれを用いた非水二次電池 | |
JP2011023335A (ja) | 非水二次電池用電極および非水二次電池 | |
JP2013134822A (ja) | 非水系二次電池用正極活物質及び非水系リチウム二次電池 | |
JP6010902B2 (ja) | リチウム遷移金属系化合物粉体、その製造方法、及びそれを用いたリチウム二次電池用正極及びリチウム二次電池 | |
WO2007015473A1 (ja) | 正極活物質、非水電解質電池用正極、非水電解質電池 | |
JP2012038680A (ja) | リチウム二次電池用正極活物質材料及びその製造方法、並びにそれを用いたリチウム二次電池用正極及びリチウム二次電池 | |
JP2008198363A (ja) | 非水系電解質二次電池用正極活物質、その製造方法及びそれを用いた非水系電解質二次電池 | |
JP5145994B2 (ja) | 非水系電解質二次電池用正極活物質とその製造方法 | |
JP5109447B2 (ja) | 非水系電解質二次電池用正極活物質、その製造方法及びそれを用いた非水系電解質二次電池 | |
WO2014073701A1 (ja) | 正極活物質、リチウム電池および正極活物質の製造方法 | |
JP5176317B2 (ja) | 非水系電解質二次電池用正極活物質とその製造方法、および、これを用いた非水系電解質二次電池 | |
JP2013060319A (ja) | リチウムマンガン(iv)ニッケル(iii)系酸化物、その酸化物を含むリチウムイオン二次電池用正極活物質、その正極活物質を用いたリチウムイオン二次電池及びそのリチウムイオン二次電池を搭載した車両 | |
JP2018206609A (ja) | 非水電解質二次電池 | |
JP5141356B2 (ja) | 非水系電解質二次電池用正極活物質とその製造方法、および、これを用いた非水系電解質二次電池 | |
JP5181455B2 (ja) | 非水系電解質二次電池用正極活物質とその製造方法、および、これを用いた非水系電解質二次電池 | |
JP5045135B2 (ja) | 非水系電解質二次電池用正極活物質、その製造方法及びそれを用いた非水系電解質二次電池 | |
JP7194493B2 (ja) | 非水系電解質二次電池用正極活物質 | |
JP5407232B2 (ja) | 二次電池用正極活物質とその製造方法及びそれを用いた二次電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 11794579 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680005048.5 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077018823 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06731977 Country of ref document: EP Kind code of ref document: A1 |