WO2012176975A2 - 전지 특성을 개선시키는 전극 활물질 제조 방법 및 그로부터 제조된 전극 활물질을 포함하는 리튬이차전지 - Google Patents
전지 특성을 개선시키는 전극 활물질 제조 방법 및 그로부터 제조된 전극 활물질을 포함하는 리튬이차전지 Download PDFInfo
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- WO2012176975A2 WO2012176975A2 PCT/KR2012/002965 KR2012002965W WO2012176975A2 WO 2012176975 A2 WO2012176975 A2 WO 2012176975A2 KR 2012002965 W KR2012002965 W KR 2012002965W WO 2012176975 A2 WO2012176975 A2 WO 2012176975A2
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- lithium
- titanium oxide
- active material
- compound
- electrode active
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/02—Oxides; Hydroxides
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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
- H01M4/485—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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/005—Alkali titanates
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/85—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by XPS, EDX or EDAX data
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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
- the present invention relates to a method for producing an electrode active material for a lithium secondary battery exhibiting stable charge and discharge efficiency and life characteristics in a high speed charge and discharge reaction, and a lithium secondary battery comprising an electrode active material prepared therefrom. Specifically, the present invention provides a method of controlling the composition ratio and composition of elements on the surface of the electrode active material.
- Materials currently used in the negative electrode active material of lithium secondary batteries include crystalline carbon such as natural graphite and artificial graphite, and amorphous carbon such as non-graphitizable carbon and digraphitizable carbon.
- lithium titanium oxide has recently attracted attention in order to meet the demand for safety and high-speed charging and discharging.
- This is an electrode active material having a stable structure of a spinel structure and having good cycle characteristics.
- the lithium titanium oxide has excellent circulation, that is, many cycles of charging and discharging can occur without deterioration of the battery.
- the present invention is to provide a method for providing an electrode active material for a lithium secondary battery that does not form precipitates on the surface of the electrode even after a fast charge-discharge reaction and a reaction for a long time when used as an electrode material of a lithium secondary battery.
- the present invention is to manufacture a lithium secondary battery showing a high charge and discharge efficiency and life characteristics during high-speed charge and discharge reaction.
- the present invention provides a method for producing lithium titanium oxide (LTO), characterized in that the composition ratio Ti / Li of the titanium element to the lithium element on the surface is controlled to be 0.8 or more.
- LTO lithium titanium oxide
- the composition of the lithium element on the surface of the lithium titanium oxide is controlled to less than 20%.
- the lithium titanium oxide manufacturing method comprises the steps of mixing and reacting a lithium compound and a titanium compound; And heat treating the reaction mixture at a temperature in the range of 700 ° C. to 900 ° C. for 4 to 8 hours.
- the mixing reaction of the lithium compound and the titanium compound consists of adding the lithium compound and the titanium compound to a solvent and stirring the slurry.
- the mixing reaction of the lithium compound and the titanium compound consists of uniformly mixing the powdered lithium compound and the titanium compound.
- the heat treatment is carried out in a normal atmospheric atmosphere of a closed container.
- the present invention provides a lithium secondary battery comprising a lithium titanium oxide prepared from the method as an electrode active material.
- an electrode active material for a lithium secondary battery that improves battery characteristics in a fast charge-discharge reaction.
- the present invention provides a method for providing an electrode active material for improving battery characteristics in a high-speed charging and discharging reaction, particularly in an electrode active material for a lithium secondary battery.
- the electrode active material for a lithium secondary battery which is suitable for applying the method of the present invention, is an active material having a relatively stable structure in which the active material structure is not destroyed or deteriorated in battery characteristics due to the normal charge / discharge reaction.
- an electrode active material is lithium titanium oxide (LTO).
- the present invention provides a method for providing a lithium titanium oxide having excellent charge and discharge efficiency and lifespan characteristics at a high speed charge and discharge reaction.
- the present invention provides a method of manufacturing an electrode active material for improving battery characteristics during high-speed charging and discharging of a lithium secondary battery as a method of controlling the composition ratio and composition of the surface active material of the electrode active material.
- the deterioration of the characteristics in the fast charge-discharge reaction of the battery is due to the battery swelling phenomenon due to the material precipitated on the surface of the electrode active material as the reaction proceeds.
- the precipitation phenomenon on the electrode surface is expected to be related to the composition of the elements present on the surface of the active material.
- lithium titanium oxide As the fast charge-discharge reaction proceeds, lithium elements present in excess on the surface of the lithium titanium oxide are precipitated as amorphous Li 2 CO 3 or Li 2 TiO 3, which is Li 2 CO 3 or Li 2 TiO 3. causess a swelling phenomenon of the battery and deteriorates battery characteristics. Therefore, controlling the amount of lithium element present on the surface of the lithium titanium oxide can be a means for preventing the deterioration of the battery.
- the present invention it is intended to control the amount of lithium element present on the surface by controlling the composition ratio of Ti / Li and lithium element to lithium element on the surface of lithium titanium oxide.
- the present invention is to improve the high-speed charge-discharge characteristics of a lithium secondary battery using the same as the electrode active material by preparing a lithium titanium oxide satisfying the above conditions in the production of lithium titanium oxide.
- the present invention provides a method of adjusting the composition ratio Ti / Li of the titanium element to the lithium element on the surface of the lithium titanium oxide to 0.8 or more.
- the term "surface" of the lithium titanium oxide used in the present invention is the range of the surface layer to be measured by x-ray photoelectron spectroscopy (XPS) used to measure the elemental composition of the compound surface in the present invention. That is, the present invention provides a method for producing lithium titanium oxide in which the composition ratio Ti / Li of titanium element to lithium element is controlled to 0.8 or more when the composition of the surface element of lithium titanium oxide is analyzed by XPS.
- the lithium secondary battery including the lithium titanium oxide prepared as described above exhibits characteristics in which charge and discharge efficiency is improved and lifespan characteristics are improved, particularly at high speed.
- the present invention is to provide a lithium secondary battery further improved high-speed charge-discharge characteristics by a method of controlling the composition of the lithium element on the surface of the lithium titanium oxide.
- the present invention provides a method of controlling the composition of lithium element on the surface of lithium titanium oxide to be less than 20%.
- Lithium titanium oxide whose elemental composition ratio and composition is controlled on the surface in the same manner as described above is derived from lithium elements present in excess on the surface, such as Li 2 CO 3 or Li 2 TiO 3 on the electrode surface during the fast charge and discharge reaction. Precipitation of foreign matter does not occur. In addition, deformation of the internal structure of the electrode active material does not occur even during a long charge / discharge operation. Therefore, the lithium secondary battery including the lithium titanium oxide prepared in the present invention as an electrode active material has high fast charge and discharge efficiency and excellent life characteristics.
- the lithium compound may be selected from the group comprising Li 2 CO 3 , Li 2 C 2 O 4 , LiHCO 3 , LiO 2 , LiOOCCH 3, and combinations thereof as a lithium element feed source in lithium titanium oxide.
- the titanium compound used as the source of the titanium element may be selected from the group comprising TiO 2 , TiH 2 , TiCl 4 , TiN, C 12 H 28 O 4 Ti, and combinations thereof.
- the lithium compound and the titanium compound are not limited to the above exemplified examples, and any lithium compound or titanium compound may be used without limitation as long as it is a compound commonly used as a supply source of lithium element or titanium element in the production of lithium titanium oxide.
- a method for mixing and reacting the lithium compound and the titanium compound a method of adding the lithium compound and the titanium compound into a solvent and stirring the slurry on the slurry, or a method of uniformly mixing the powdered lithium compound and the titanium compound may be used.
- a method for mixing and reacting the lithium compound and the titanium compound a method of adding the lithium compound and the titanium compound into a solvent and stirring the slurry on the slurry, or a method of uniformly mixing the powdered lithium compound and the titanium compound may be used.
- the reaction is performed by stirring or the like while the lithium compound and the titanium compound are mixed with the solvent in the slurry phase, thereby forming a reaction mixture on the slurry. do.
- the grinding may be performed by a ball mill.
- the solvent used for the mixing reaction on the slurry can be used without limitation as long as it can form a slurry of the lithium compound and the titanium compound.
- a solvent selected from the group consisting of water, acetone, methanol, ethanol, isopropyl alcohol and combinations thereof can be used.
- the ratio of the solids to the solvent is preferably used in a mass ratio of 10% to 40%.
- the powdery reaction mixture is obtained by removing the solvent through spray drying, vacuum drying, air drying, or oven drying.
- a powdery reaction mixture in a uniformly mixed state is obtained by sufficiently mixing the powder with a mixer or the like.
- the reaction mixture of the lithium compound and the titanium compound obtained from the above process can be finally thermally obtained by heat treatment.
- the heat treatment is performed by firing at 700 ° C. to 900 ° C. for 4 hours to 8 hours.
- the firing temperature is less than 700 ° C.
- the capacity of the electrode active material produced by dropping the crystallinity of the lithium titanium oxide powder is reduced, which is not preferable.
- the firing temperature exceeds 900 ° C., an impurity peak is formed, which is not preferable because the charge / discharge capacity of the battery may be reduced or the growth of particles may occur.
- the heat treatment time is less than the above range, the crystallinity of the lithium titanium oxide powder is inferior as in the case of low-temperature firing, and conversely, when the heat treatment time is extended, the structure of the lithium titanium oxide is deformed and the stability of the battery is inferior. Occurs.
- the elements present on the surface of the lithium titanium oxide may be lost. At this time, the amount of loss increases in the order of light elements with small elements and heavy elements with large elements.
- the elements present in the lithium titanium oxide may be exposed to the surface.
- the temperature and time of the heat treatment process in controlling the composition ratio and content of the surface element.
- the temperature and time of the heat treatment process should be adjusted differently depending on the type of lithium compound and titanium compound used as a raw material, their mixing reaction method and reaction conditions.
- the atmosphere in which the heat treatment process is performed also affects.
- the composition ratio (Ti / Li) and the composition of the lithium element on the surface of the lithium titanium oxide finally obtained by controlling the heat treatment process as described above is controlled to have a value in a limited range.
- the atmosphere of the heat treatment process may be made in an atmosphere selected from the group consisting of nitrogen gas, argon gas, argon / hydrogen mixed gas and nitrogen / hydrogen mixed gas, or may be made in a general atmospheric atmosphere.
- a weakly reducing atmosphere is formed by performing in a closed container as disclosed in Korean Patent Application No. 10-2010-0126260, and it is possible to produce dense particles by a press effect. Can be.
- the lithium titanium oxide prepared such that the composition ratio Ti / Li of the titanium element to the lithium element on the surface has a value of 0.8 or more can be used for the production of a lithium secondary battery having improved battery characteristics in a fast charge / discharge reaction.
- the lithium titanium oxide results in further improving battery characteristics when the composition of the lithium element on the surface is controlled to be less than 20%.
- powdered lithium titanium oxide having a particle size of nano size is preferably prepared.
- the lithium titanium oxide manufacturing method is only one embodiment of controlling the composition ratio and the composition of the surface element, and the present invention should not be considered to be limited thereto. That is, it is to be understood that all methods for producing lithium titanium oxide, in which the composition ratio of titanium element to lithium element on the surface of Ti / Li is 0.8 or more and the composition of lithium element is less than 20%, are included in the scope of the present invention. do.
- the present invention provides a lithium secondary battery using the lithium titanium oxide powder prepared by the above method as an electrode active material.
- an electrode current collector by applying pressure to the lithium titanium oxide powder so that the electrode plate density becomes 2 g / cc or more.
- the electrode current collector is generally made to a thickness of 3 to 500 mu m.
- the electrode current collector may optionally include a conductive material, a binder, a filler, and the like, in addition to the lithium titanium oxide manufactured in the present invention.
- the lithium secondary battery including the electrode manufactured as described above may be used stably while maintaining high charge and discharge efficiency and lifespan characteristics even at high speed charge and discharge reactions.
- a lithium titanium oxide powder was prepared in the same manner as in Example, except that the heat treatment time was 11 hours.
- the device name, experimental conditions, and driving program of the XPS are shown in Table 1 below.
- FIG. 1 shows the spectra of 1 s electrons and 2 p electrons of lithium and titanium elements in the lithium titanium oxide powder prepared in Example, and shows the data of calculating the composition of surface elements by obtaining the width of each peak in the spectrum. . From the above data, the surface elemental composition ratio Ti / Li of the lithium titanium oxide prepared in Examples is 0.84. In addition, the composition of the lithium element was found to be 19.47%. This is controlled within the scope of the present invention.
- Figure 2 shows the XRD results of the lithium titanium oxide powder prepared in Example. From this, it can be seen that the crystalline Li 4 Ti 5 O 12 to form without a specific secondary phase.
- FIG. 3 shows the spectra of 1 s electrons and 2 p electrons of lithium and titanium elements in the lithium titanium oxide powder prepared in Comparative Example, and shows the data of calculating the composition of the surface elements by obtaining the width of each peak in the spectrum. . From the above data, the surface elemental composition ratio Ti / Li of the lithium titanium oxide prepared in Examples is 0.75. In addition, the composition of the lithium element was found to be 21.34%. This is not controlled within the scope of the present invention.
- Figure 4 shows the XRD results of the lithium titanium oxide powder prepared in the comparative example. From this, it can be seen that the lithium titanium oxide powder prepared in Comparative Example also forms crystalline Li 4 Ti 5 O 12 without a specific secondary phase.
- a coin cell using lithium titanium oxide powders prepared in Examples and Comparative Examples was prepared as an electrode active material, and the change in characteristics of the battery in the fast charge / discharge reaction was observed.
- the prepared electrode was used as the cathode, LiCoO 2 was used as the anode, the separator was a porous polyethylene membrane, and the electrolyte was an EC / DMC (1: 1) -based nonaqueous electrolyte in which 1 M LiPF 6 was dissolved.
- the coin-type secondary battery was manufactured by setting the capacity ratio of the negative electrode active material to the positive electrode active material to 1.8.
- the charge and discharge capacities were measured according to the increase of the C-rate, and the life characteristics and the charge / discharge efficiency were evaluated therefrom. That is, the capacity when charged for 12 minutes, 0.2C is the capacity when charged for 1 / 0.2 hours, or 5 hours).
- the life characteristics represent the ratio of the discharge capacity at each C-rate to the discharge capacity at 0.02C.
- the lifetime characteristic is the value obtained by dividing the discharge capacity measured at each C-rate by the discharge capacity at 0.02C.
- the lifetime characteristic is the value obtained by dividing the discharge capacity measured at each C-rate by the discharge capacity at 0.02C.
- the lithium titanium oxide in which the composition ratio Ti / Li of the surface element and the composition of the lithium element were controlled improves the characteristics of the fast charge / discharge battery in the lithium secondary battery using the electrode active material.
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Abstract
Description
Model | SIGMA PROBE (ThermoVG, U.K.) | |
X-ray Source | Monochromatic Al-Ka | |
Wide Scan | Pass Energy | 50 eV |
Step Size | 1.0 eV | |
Narrow Scan | Pass Energy | 20 eV |
Step Size | 50 eV | |
진공도 | 4 x 10-9 mB | |
보정 | C 1s (284.5 eV) | |
구동 프로그램 | Avantage (Thermo VG) |
측정조건 | 충전용량(mAh/g) | 방전용량(mAh/g) | 수명특성(%)* | 충방전효율(%) |
0.02 C | 174.17 | 170.30 | 100.00 | 97.78 |
0.2 C | 171.04 | 169.86 | 99.74 | 99.31 |
0.5 C | 170.41 | 169.15 | 99.32 | 99.26 |
1 C | 170.26 | 168.20 | 98.77 | 98.79 |
2 C | 169.94 | 167.41 | 98.31 | 98.51 |
5 C | 169.74 | 166.74 | 97.91 | 98.23 |
10 C | 169.60 | 164.81 | 96.78 | 97.17 |
측정조건 | 충전용량(mAh/g) | 방전용량(mAh/g) | 수명특성(%)* | 충방전효율(%) |
0.02 C | 175.24 | 170.03 | 100.00 | 97.03 |
0.2 C | 171.31 | 169.50 | 99.69 | 98.94 |
0.5 C | 170.47 | 168.31 | 98.99 | 98.73 |
1 C | 170.57 | 166.00 | 97.63 | 97.32 |
2 C | 170.03 | 164.54 | 96.77 | 96.77 |
5 C | 169.61 | 162.57 | 95.61 | 95.85 |
10 C | 169.33 | 159.04 | 93.54 | 93.92 |
Claims (7)
- 표면에서의 리튬 원소에 대한 티탄 원소의 조성비 Ti/Li가 0.8 이상으로 제어된 것을 특징으로 하는 리튬 티탄산화물(LTO)의 제조 방법.
- 제1항에서,상기 리튬 티탄산화물은 표면에서의 리튬 원소의 조성이 20% 미만으로 제어된 것을 특징으로 하는 리튬 티탄산화물(LTO)의 제조방법.
- 제1항에서,리튬 화합물과 티탄 화합물을 혼합 반응시키는 단계; 및상기 반응 혼합물을 700℃ 내지 900℃ 범위의 온도에서 4시간 내지 8시간 동안 열처리하는 단계를 포함하는 것을 특징으로 하는 리튬 티탄산화물(LTO)의 제조방법.
- 제3항에서,상기 리튬 화합물과 티탄 화합물의 혼합 반응은 리튬 화합물과 티탄 화합물을 용매에 투입하여 슬러리 상에서 교반하는 것으로 이루어짐을 특징으로 하는 리튬 티탄산화물(LTO)의 제조방법.
- 제3항에서,상기 리튬 화합물과 티탄 화합물의 혼합 반응은 분말상의 리튬 화합물과 티탄 화합물을 균일하게 혼합하는 것으로 이루어짐을 특징으로 하는 리튬 티탄산화물(LTO)의 제조방법.
- 제3항에서,상기 열처리는 닫힌 용기의 일반 대기 분위기에서 이루어지는 것을 특징으로 하는 리튬 티탄산화물(LTO)의 제조방법.
- 제1항 내지 제6항 중 어느 한 항의 제조방법으로부터 제조된 리튬 티탄산화물을 전극 활물질로 포함하는 것을 특징으로 하는 리튬이차전지.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US14/115,298 US20140091255A1 (en) | 2011-06-21 | 2012-04-18 | Method for preparing an electrode active material for improving the properties of a battery, and lithium secondary battery including the electrode active material prepared thereby |
CN201280030562.XA CN103636036A (zh) | 2011-06-21 | 2012-04-18 | 制备用于改善电池特性的电极活性物质的方法,及包括由其制备的电极活性物质的锂二次电池 |
EP12803304.0A EP2725641A4 (en) | 2011-06-21 | 2012-04-18 | METHOD FOR THE PRODUCTION OF AN ELECTRODE-ACTIVE MATERIAL FOR IMPROVING THE PROPERTIES OF A BATTERY AND LITHIUM CERTAIN BATTERY WITH THE ELECTRODE ACTIVE MATERIAL PRODUCED IN THIS METHOD |
JP2014516887A JP2014523387A (ja) | 2011-06-21 | 2012-04-18 | 電池特性を改善させる電極活物質の製造方法及びそれから製造された電極活物質を含むリチウム二次電池 |
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KR10-2011-0060109 | 2011-06-21 | ||
KR1020110060109A KR20120140396A (ko) | 2011-06-21 | 2011-06-21 | 전지 특성을 개선시키는 전극 활물질 제조 방법 및 그로부터 제조된 전극 활물질을 포함하는 리튬이차전지 |
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WO2012176975A2 true WO2012176975A2 (ko) | 2012-12-27 |
WO2012176975A3 WO2012176975A3 (ko) | 2013-02-14 |
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US (1) | US20140091255A1 (ko) |
EP (1) | EP2725641A4 (ko) |
JP (1) | JP2014523387A (ko) |
KR (1) | KR20120140396A (ko) |
CN (1) | CN103636036A (ko) |
WO (1) | WO2012176975A2 (ko) |
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GB201113168D0 (en) | 2011-08-01 | 2011-09-14 | Univ Birmingham | Method for producing particulate clusters |
US10128551B2 (en) * | 2015-11-20 | 2018-11-13 | Samsung Electronics Co., Ltd. | Electrolyte for lithium air battery and lithium air battery including the same |
DE102018203512A1 (de) | 2018-03-08 | 2019-09-12 | Volkswagen Aktiengesellschaft | Lithium-Ionen-Zelle für einen Energiespeicher eines Kraftfahrzeugs, Verfahren zum Herstellen |
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JP3502118B2 (ja) * | 1993-03-17 | 2004-03-02 | 松下電器産業株式会社 | リチウム二次電池およびその負極の製造法 |
JP4642960B2 (ja) * | 2000-01-26 | 2011-03-02 | 東邦チタニウム株式会社 | チタン酸リチウムの製造方法 |
JP4642959B2 (ja) * | 2000-01-26 | 2011-03-02 | 東邦チタニウム株式会社 | チタン酸リチウムの製造方法 |
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US20070141470A1 (en) * | 2005-12-16 | 2007-06-21 | Kensuke Nakura | Lithium ion secondary battery |
JP2007227072A (ja) * | 2006-02-22 | 2007-09-06 | Sii Micro Parts Ltd | 電気化学セル |
CN101675547B (zh) * | 2007-11-01 | 2013-05-08 | Agc清美化学股份有限公司 | 锂离子二次电池用正极活性物质的制造方法 |
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JP2011113795A (ja) * | 2009-11-26 | 2011-06-09 | Nippon Chem Ind Co Ltd | リチウム二次電池活物質用チタン酸リチウムの製造方法 |
JP2011113796A (ja) * | 2009-11-26 | 2011-06-09 | Nippon Chem Ind Co Ltd | リチウム二次電池用活物質およびこれを用いたリチウム二次電池 |
JP2011111361A (ja) * | 2009-11-26 | 2011-06-09 | Nippon Chem Ind Co Ltd | リチウム二次電池活物質用チタン酸リチウムの製造方法 |
JP2012028026A (ja) * | 2010-07-20 | 2012-02-09 | Nippon Chem Ind Co Ltd | リチウム二次電池用負極活物質及びその製造方法 |
CN101944590B (zh) * | 2010-08-19 | 2013-03-27 | 东莞新能源科技有限公司 | 碳包覆钛酸锂的制备方法 |
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JP2014523387A (ja) | 2014-09-11 |
WO2012176975A3 (ko) | 2013-02-14 |
EP2725641A4 (en) | 2015-11-18 |
US20140091255A1 (en) | 2014-04-03 |
KR20120140396A (ko) | 2012-12-31 |
EP2725641A2 (en) | 2014-04-30 |
CN103636036A (zh) | 2014-03-12 |
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