WO2003003489A1 - Nonaqueous electrolyte secondary battery-use anode active matter, production method therefor, nonaqueous electrolyte secondary battery, and production method for anode - Google Patents
Nonaqueous electrolyte secondary battery-use anode active matter, production method therefor, nonaqueous electrolyte secondary battery, and production method for anodeInfo
- Publication number
- WO2003003489A1 WO2003003489A1 PCT/JP2002/006473 JP0206473W WO03003489A1 WO 2003003489 A1 WO2003003489 A1 WO 2003003489A1 JP 0206473 W JP0206473 W JP 0206473W WO 03003489 A1 WO03003489 A1 WO 03003489A1
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- Prior art keywords
- positive electrode
- active material
- electrode active
- particles
- secondary battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- Positive electrode active material for non-aqueous electrolyte secondary battery manufacturing method thereof, non-aqueous electrolyte secondary battery, and technical field of positive electrode
- the present invention provides a positive electrode active material for a non-aqueous electrolyte secondary battery capable of effectively improving load characteristics and increasing capacity in a secondary battery using a non-aqueous solution as an electrolyte, a method for producing the same, and a method for producing the same.
- the present invention relates to a nonaqueous electrolyte secondary battery used and a method for producing a positive electrode for the nonaqueous electrolyte secondary battery.
- Lithium-ion secondary batteries use a composite oxide of Li and a group material such as Co, Ni, and Mn as the positive electrode active material, and use a carbonaceous material such as carbon that can insert and remove lithium ions from the negative electrode active material.
- This is a secondary battery that uses materials, and has the features of higher capacity and higher voltage than nickel-metal hydride storage batteries.
- the packing density of the positive electrode active material has been increased, and the amount of conductive additive mixed with the positive electrode active material has been reduced. It is necessary to take measures such as increasing the weight of goods.
- the positive electrode active material has a spherical shape to increase the filling efficiency, and by improving the filling efficiency, the contact area between the active materials is increased to increase the conductivity. Attempts have been made to increase the weight of the active material by increasing the amount of the conductive auxiliary agent in the positive electrode by increasing the amount.
- Japanese Patent Application Laid-Open No. 10-74516 discloses that the positive electrode active material is made into a hollow spherical shape to improve the filling efficiency, increase the specific surface area, and increase the contact area with the electrolyte to increase the reactivity under heavy load. Is disclosed. However, in this method, since the active material has a hollow spherical shape, the amount of the active material that can be filled per unit volume is reduced, even if the spherical shape is expected to improve the packing efficiency. Can not hope.
- JP-A-11-273678 discloses that as a cobalt source of a lithium cobaltate positive electrode active material, A technique is disclosed in which spherical or elliptical spherical oxyhydroxide cobalt is mixed with oxycobalt hydroxide and a lithium compound and fired to produce a spherical positive electrode active material.
- Japanese Patent Application Laid-Open No. H11-288716 discloses a technique for producing a spherical positive electrode active material by mixing and firing a spherical or elliptical nickel cobalt hydroxide having primary particles collected radially and a lithium compound, followed by firing. ing.
- the reaction of the lithium compound and the reaction of the transition metal compound occur simultaneously when the reaction for producing the positive electrode active material occurs. Since these reactions involve the generation of gases such as water vapor and carbon dioxide, the generated active material remains spherical, but has very large voids, and the amount of active material that can be filled per unit volume decreases. You can't expect high capacity.
- An object of the present invention is to provide a positive electrode active material for a nonaqueous electrolyte secondary battery, which effectively improves load characteristics in a nonaqueous electrolyte secondary battery, enables high capacity storage, has a high filling efficiency, and has a high packing density. And a method for producing the same.
- Another object of the present invention is to provide a non-aqueous electrolyte secondary battery capable of obtaining an excellent discharge capacity and a method for producing a positive electrode for the non-aqueous electrolyte secondary battery.
- the composite oxide particles include Li and at least one transition element selected from the group consisting of Co, Ni, Mn, and Fe, and the composite oxide particles have a longest diameter. Is Dl, and D1ZD2 when the shortest diameter is D2 is in the range of 1.0 to 2.0.
- a positive electrode active material for a non-aqueous electrolyte secondary battery containing 90% or more of spherical, Z or elliptical spherical particles is obtained.
- a step of preparing a raw material mixture by mixing raw materials containing at least one transition element compound particle selected from the group consisting of Co, Ni, Mn, and Fe and a lithium compound ( A), a non-aqueous electrolyte comprising: a step (B) of calcining at a temperature equal to or higher than the melting point of the lithium compound in the raw material mixture; and a step (C) of calcining the lithium compound in the raw material mixture.
- a method for producing a positive electrode active material for a secondary battery is performed.
- a positive electrode having a positive electrode active material powder, a negative electrode, and an electrolytic solution, wherein the positive electrode active material powder contains the nonaqueous electrolytic solution containing the positive electrode active material for a secondary battery.
- the next battery is ⁇ .
- a method for producing a positive electrode for use in a non-aqueous electrolyte secondary battery comprising forming and processing a positive electrode active material containing composite oxide particles, wherein the particles mainly have a particle size of 2 to: ⁇ Um, having an average particle diameter of 5 to 80; um, containing Li and at least one transition element selected from the group consisting of Co, Ni, Mn and Fe, and having a longest diameter of Dl.
- Non-aqueous electrolyte positive electrode for a secondary battery comprising: a step (a) of adding oxidized particles and a step (b) of mixing the composite oxide particles obtained in step (a) to obtain a positive electrode active material.
- FIG. 1 is a copy of an SEM image of the positive electrode active material prepared in Example 1 at a magnification of 1000 ⁇ .
- FIG. 2 is a copy of a 5000 ⁇ SEM image of the positive electrode active material prepared in Example 1.
- the positive electrode active material for a non-aqueous electrolyte secondary battery of the present invention includes Li and at least one transition element selected from the group consisting of Co, Ni, Mn, and Fe. It consists of specific composite oxide particles containing and.
- LiCo0 2 LiNi0 2, LiMn 2 0 4, LiFe0 2 and, LiCo 08 Nio 2 0 2, LiCo 05 Nio. 5 0 2, LiCo 01 Nio 9 O 2 , etc.
- the positive electrode active material of the present invention contains, in addition to the above composition, at least one selected from the group consisting of alkali metals, alkaline earth metals, Ti, Zr, Hf, Y, Sc, and rare earth metals. Is also good. These metal elements have functions such as increasing the lattice spacing of the positive electrode active material of the present invention to increase the capacity, increasing the charge / discharge efficiency, and improving the sinterability of the positive electrode active material to increase the density. .
- the addition amount of these additional elements is preferably 1% by weight or less, more preferably 0.5% by weight or less, further preferably 0.3% by weight or less. Addition of more than 1% by weight is not preferable because the density cannot be improved and the capacity of the positive electrode active material of the present invention may be reduced.
- the shape of the composite oxide particles as the positive electrode active material of the present invention is mainly spherical or elliptical spherical. Needles, spindles, plates, and irregular shapes are not preferable because the filling efficiency cannot be increased. Even if the shape is elliptical, the aspect ratio is large.
- D1 and D2 ( ⁇ ) when the longest diameter is Dl and the shortest diameter is D2. 90% or more of spherical and / or oval spherical particles having a ratio of about 1.0 to 2.0, preferably 1.0 to 1.5.
- the tap density of the positive electrode active material of the present invention is preferably higher. If the tap density is low, the filling efficiency of the positive electrode active material becomes poor, so that a large amount of the active material cannot be filled in a limited volume of the electrode plate, and the capacity decreases.
- the tap density is preferably 2.9 gZcm 3 or more, particularly preferably 3.0 g / cm 3 or more, and more preferably 3.1 gZcm 3 or more.
- the upper limit of the tap density is not particularly limited, but is usually about 5.0 g / cm 3 .
- Particle size distribution and average particle size play an important role in improving the tap density. If the viscosity distribution is too broad or too sharp, the packing efficiency of the particles will be poor. If the average particle size is too small, the surface energy of the particles will be large, and such ⁇ will also reduce the packing efficiency. If the average particle size is too large, it will be difficult to uniformly apply the active material on the current collector when preparing an electrode.
- the particle diameter of the composite oxide particles constituting the positive electrode active material of the present invention mainly 2 ⁇ 100 ⁇ ⁇ , especially 10: is preferably in the range of ⁇ ⁇ , in particular, 80% or more, further It is desirable that 85% or more, more preferably 90% or more, be in the above range.
- the average particle size is preferably 5 to 80 m, particularly 30 to 80 // m, and more preferably 30 to 60; m. If the average particle size is less than 5 m or larger than 80 m, even if the particle size range falls within the preferred range described above, the particle size distribution becomes too sharp and the packing efficiency decreases, which is not preferable. .
- the particle size of the composite oxide is a value measured by a laser diffractometer (Microtrac HA, manufactured by Honeywell), and the average particle size is a D50 value.
- the specific surface area of the composite oxidized product is preferably 0.05 to 0.24 m 2 Zg, particularly preferably 0.1 to 0.2 m 2 / g.
- the specific surface area is less than 0.05 m 2 Zg, the internal resistance of the obtained positive electrode becomes large and the high-rate discharge characteristics deteriorate, which is not preferable.
- the specific surface area exceeds 0.24 m 2 / g, electrolyte This is not preferred because the reactivity of the positive electrode increases and the thermal stability of the obtained positive electrode decreases.
- the average particle diameter is different. It is preferable to use a mixture of two kinds of the above composite oxide particles. At this time, it is preferable that the mixed acid particles mixed have an average particle diameter different by 10% or more.
- the method for producing the positive electrode active material of the present invention is not particularly limited as long as the positive electrode active material of the present invention can be obtained. For example, it can be obtained by a method in which a lithium compound serving as a lithium source and a compound of a transition element serving as a transition metal source are mixed, and firing is performed under appropriate conditions. Preferred methods include the production method of the present invention described below.
- a step (A) of preparing a raw material mixture by mixing raw materials containing compound particles of a transition element serving as a specific transition metal source and a lithium compound serving as a lithium source is performed.
- the lithium compound serving as the lithium source preferably has a melting point of 800 ° C. or less and a thermal decomposition temperature of 1100 ° C. or less.
- the transition element compound particles serving as the transition metal source are compound particles of at least one transition element selected from the group consisting of Co, Ni, Mn, and Fe, and have a thermal decomposition temperature of 1100 ° C or less. These are preferably, for example, hydroxides and carbonates. However, in view of the purpose of improving the tap density, it is desirable to use non-heat-transferring oxide particles.
- the transition metal source preferably has a spherical and / or elliptical spherical particle shape.
- Methods for obtaining such particles include, for example, a method of forming amorphous primary particles into a spherical shape by erecting, a method of forming a liquid or slurry-like compound into a spherical shape by a spray drying or spray baking method, and a uniform precipitation method. And the like to obtain spherical particles directly.
- these spherical particles can be obtained by firing, but if the firing temperature is low at this time, the tap density will also decrease, so that the temperature is 500 ° C or more. It is preferred to bake with.
- the spherical and Z or elliptical transition metal sources preferably have some tap density at this stage. If the tap density at this stage is low, the tap density of the obtained positive electrode active material will also be low.
- the tap density of such a spherical and spherical or oval spherical source is preferably 2.0 g / cm 3 or more, more preferably 2.2 g / cm 3 or more, and even more preferably 2.4 g / cm 3 or more. It is.
- the upper limit of the tap density is not particularly limited, but is usually about 5.0 gZ cm 3 .
- the raw materials containing the above-mentioned lithium source and transition metal source are indispensable.
- the above-mentioned additive element that is, at least one metal compound selected from the group consisting of alkali metals, alkaline earth metals, Ti, Zr, Hf, Y, Sc, rare earth metals, etc. Is also good. Mixing of these raw materials can be performed by a known method.
- the firing of the raw material mixture prepared in the step (A) is performed in two stages, a specific calcination step and a specific calcination step. Do with.
- the specific calcining step is a step (B) of calcining at a temperature of not less than the melting point of the lithium compound used in the raw material mixture in the step (A).
- the purpose of this calcining step is to impregnate the lithium compound into the transition element compound particles that are the raw materials. Therefore, the upper limit of the holding temperature is preferably the full temperature of the lithium compound, and preferably 300 to 950 ° C, particularly 500 to 800 ° C.
- the holding time is preferably from 10 to 300 minutes.
- the specific calcination step is a calcination step, for example, a step (C) in which a compound of a transition element impregnated with a lithium compound is baked at a temperature equal to or higher than the decomposition temperature of the lithium compound used in the raw material mixture in step (A). is there.
- the purpose of the firing step is to react the lithium compound with the compound of the transition element to produce the desired cathode active material of the present invention.
- the temperature at this time may be higher than the decomposition temperature of the lithium compound, but when the decomposition temperature of the lithium compound is low, it takes time to react the transition element with the compound particles. 700 ⁇ : 1100. C, more preferably 800-1100 ° C.
- the retention time is preferably from 10 to: 1800 minutes, and more preferably from 10 to 900 minutes.
- the positive electrode active material of the present invention can be obtained through the above steps, but may include other steps as necessary.
- Non-aqueous electrolyte secondary battery of the present invention includes a positive electrode having a positive electrode active material powder, a negative electrode, and an electrolyte, as long as it includes a positive electrode active material of the present invention the as a positive electrode active material, other
- the configuration of and the other configurations can be appropriately selected from known ones.
- the average particle size differs by at least 10%. Both are obtained by performing a step (a) of preparing two types of composite oxide particles and a step (b) of mixing the composite oxide particles obtained in the step (a) to obtain a positive electrode active material. it can.
- the mixing ratio of at least two types of composite acid particles having an average particle size different by 10% or more, for example, in the case of two types, is preferably in the range of 1: 9 to 9: 1 by weight.
- the positive electrode active material for a non-aqueous electrolyte secondary battery of the present invention is a composite oxide of spherical and Z or elliptical spherical particles, wherein the particles have an aspect ratio in the range of 1.0 to 2.0, and have a tap density. Is 2.9 g Zcm 3 or more, so when an electrode is made using this, the electrode density can be about 3.4 to 3.7 g / cm 3, and the discharge capacity per volume of the non-aqueous electrolyte secondary battery And load characteristics can be effectively improved. In the production method of the present invention, such a positive electrode active material can be easily obtained. Furthermore, since the nonaqueous electrolyte secondary battery of the present invention uses the positive electrode active material of the present invention, the discharge capacity and load characteristics can be improved.
- the obtained particles were investigated using an ICP emission spectrometer, an X-ray diffractometer, an electron microscope, and a tap denser (XY-2000, manufactured by Seishin Enterprise). As a result, the particle diameter of the primary particles was 0.2 to 10 ⁇ m. It was found that the secondary particles were LiCoO 2 particles having a particle diameter of 10 to 100 m, an aspect ratio of 1 to 1.5, and a tap density of 3.2 gZcm 3 or more. The specific surface area of the particles was found to be 0.15 m 2 / g.
- the tap density was measured by collecting 10 g of the obtained particles into a 20 ml cylinder and measuring the tap height 2 cm and the number of taps 200 times.
- the specific surface area was measured by collecting lg of the obtained particles and degassing at 200 ° C for 20 minutes.
- Fig. 1 shows a SEM photograph of the obtained particles as a positive electrode active material at a magnification of 1000
- Fig. 2 shows a SEM photograph of the particles at a magnification of 5000.
- the obtained particles, acetylene black as a conductive additive, and PTFE as a binder were mixed at a weight ratio of 50:40:10 to prepare a positive electrode mixture, and a stainless steel plate was collected.
- a positive electrode was prepared as an electric body.
- a lithium metal negative electrode using a stainless steel plate as a current collector was fabricated.
- an electrolyte was prepared by mixing ethylene carbonate and dimethyl carbonate at a volume ratio of 1: 1 and dissolving lithium perchlorate at a ratio of ImolZL. Using the obtained positive electrode, negative electrode and electrolyte solution, a lithium ion secondary battery was manufactured.
- the initial discharge capacity of the obtained battery was measured at a charging current density of 3 mAZcm 2 and a charging upper limit voltage of 4.3 V and a discharging lower limit of 3 V.
- the particles obtained, graphite as a conductive additive, and PVDF as a binder were mixed at a weight ratio of 90: 5: 5, and a 20-m-thick A1 collection was obtained by a doctor-blade method. It was applied to a conductor and pressed at a pressure of 3 tZcm 2 to produce an electrode. The volume and weight of the obtained electrode were measured, and the volume and weight of the A1 current collector were subtracted to calculate the electrode density. Table 1 shows the results.
- the baking temperature of the cake of Example 1 was 500 ° C and 700. (: 800 ° C or 900 ° C, pre-baking time 240 minutes, 480 minutes, 360 minutes or 640 minutes, final firing temperature 800 ° C, 850 ° (:, 900 ° C or 950 ° C, final firing Example 1 except that the time was 600 minutes, 1200 minutes, 60 hours or 100 hours, respectively, and instead of lithium carbonate, 47 g of lithium oxalate, 35 g of lithium nitrate, 100 g of lithium hydroxide and 44 g of lithium sulfate were used.
- the particle size of the primary particles is 0.2 to 10 ⁇ m
- the particle size of the secondary particles is 10 to: L00 / m, spherical or elliptical spherical with an aspect ratio of 1 to 1.5 Particles were prepared, subjected to various measurements and evaluations, and the results are shown in Table 1.
- hydroxides that are spherical or elliptical spherical particles co-precipitated hydroxides with a molar ratio of nickel atoms to cobalt atoms of 8: 2, 5: 5, 1: 9 or 10: 0 or
- the same operation as in Example 1 was carried out except that a coprecipitated hydroxide having a molar ratio of 5: 1 to manganese atoms and a coprecipitated hydroxide having a molar ratio of manganese atoms to nickel atoms of 1: 1 were used.
- a composite particle with a primary particle size of 0.2 to: 10 ⁇ m and a secondary particle size of 10 to: 100 ⁇ m, Spherical or elliptical spherical particles having an aspect ratio of 1 to 1.5 were prepared, and each measurement and evaluation were performed. Table 1 shows the results.
- a needle-like or amorphous composite oxide was prepared in the same manner as in Example 1 except that a needle-like or amorphous hydroxide was used, Measurement and evaluation were performed. Table 1 shows the results.
- Example 1 The particles prepared in Example 1 were classified and divided into a small particle group having an average particle diameter of 10 ⁇ m and a large particle group having an average particle diameter of 70 ⁇ , each of which was 1: 1 by weight (Example 12). , 3: 7 (Example 13) or 1: 9 (Example 14) to obtain a positive electrode active material. Further, in the same manner as in Example 1, each electrode was subjected to measurement and evaluation. . Table 2 shows the results.
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KR1020037016383A KR100934612B1 (ko) | 2001-06-27 | 2002-06-27 | 비수전해액 2차전지용 양극활성물질, 그 제조법,비수전해액 2차전지, 및 양극의 제조법 |
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JP2001-195157 | 2001-06-27 | ||
JP2001195157A JP5079951B2 (ja) | 2001-06-27 | 2001-06-27 | 非水電解液2次電池用正極活物質、その製造方法、非水電解液2次電池、並びに正極の製造方法 |
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US9263732B2 (en) | 2009-12-22 | 2016-02-16 | Jx Nippon Mining & Metals Corporation | Positive electrode active material for lithium-ion battery, positive electrode for a lithium-ion battery, lithium-ion battery using same, and precursor to a positive electrode active material for a lithium-ion battery |
US9327996B2 (en) | 2011-01-21 | 2016-05-03 | Jx Nippon Mining & Metals Corporation | Method for producing positive electrode active material for lithium ion battery and positive electrode active material for lithium ion battery |
US9911518B2 (en) | 2012-09-28 | 2018-03-06 | Jx Nippon Mining & Metals Corporation | Cathode active material for lithium-ion battery, cathode for lithium-ion battery and lithium-ion battery |
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WO2020044795A1 (ja) * | 2018-08-29 | 2020-03-05 | 株式会社田中化学研究所 | 二次電池用正極活物質粒子及び二次電池用正極活物質粒子の製造方法 |
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US10122012B2 (en) | 2010-12-03 | 2018-11-06 | Jx Nippon Mining & Metals Corporation | Positive electrode active material for lithium-ion battery, a positive electrode for lithium-ion battery, and lithium-ion battery |
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US9214676B2 (en) | 2011-03-31 | 2015-12-15 | Jx Nippon Mining & Metals Corporation | Positive electrode active material for lithium ion batteries, positive electrode for lithium ion batteries, and lithium ion battery |
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JP2020035625A (ja) * | 2018-08-29 | 2020-03-05 | 株式会社田中化学研究所 | 二次電池用正極活物質粒子及び二次電池用正極活物質粒子の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1311574C (zh) | 2007-04-18 |
JP2003017050A (ja) | 2003-01-17 |
KR100934612B1 (ko) | 2009-12-31 |
KR20040015266A (ko) | 2004-02-18 |
JP5079951B2 (ja) | 2012-11-21 |
CN1520621A (zh) | 2004-08-11 |
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