WO2020082019A1 - Method for synthesizing nickel-cobalt-aluminum electrodes - Google Patents
Method for synthesizing nickel-cobalt-aluminum electrodes Download PDFInfo
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- WO2020082019A1 WO2020082019A1 PCT/US2019/057060 US2019057060W WO2020082019A1 WO 2020082019 A1 WO2020082019 A1 WO 2020082019A1 US 2019057060 W US2019057060 W US 2019057060W WO 2020082019 A1 WO2020082019 A1 WO 2020082019A1
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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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- 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
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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
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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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
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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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- 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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- 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
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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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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- 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 disclosure relates to rechargeable battery systems, and more specifically to the methods of making nickel-cobalt-aluminum (NCA) electrodes for such systems.
- NCA nickel-cobalt-aluminum
- the present disclosure also relates to the fabrication of rechargeable battery cells, and more specifically, to the post-assembly formation, and testing process of rechargeable battery cells.
- Rechargeable batteries are an integral component of energy-storage systems for electric vehicles and for grid storage (for example, for backup power during a power outage, as part of a microgrid, etc.).
- Many rechargeable battery systems rely on lithium compounds for one or both of the electrodes.
- electrodes made from the lithium compounds are employed as an integral portion of the rechargeable battery system.
- Standard methods of making electrodes for inclusion in rechargeable battery systems include a standard NCA (e.g. LiNii-x-yCoxAlyCh with x about 0.15 to 0.05 and y about 0.06 to 0.01) lithiation process and a standard single crystal NMC (e.g. LiNii-x- yMnxCoyC with x about 0.3 to 0.05 and y about 0.2 to 0.5) lithiation process.
- NCA e.g. LiNii-x-yCoxAlyCh with x about 0.15 to 0.05 and y about 0.06 to 0.01
- a standard single crystal NMC e.g. LiNii-x- yMnxCoyC with x about 0.3 to 0.05 and y about 0.2 to 0.5
- NCA(OH)2 the nomenclature NCA(OH)2 refers to Nii-x- y CoxAl y (OH)2 precursors with a designated Li/other metal (OM) ratio of 1.02.
- OM other metal
- the 2% excessive LiOHTBO is used to compensate lithium loss during high temperature calcination.
- more than 2% excessive Li sources L12CO3 or LiOHTUO are used (e.g. 10% for NMC622, and 20% for NMC532).
- Cell or“battery cell” generally refers to an electrochemical cell, which is a device capable of generating electrical energy from chemical reactions or facilitating chemical reactions through the introduction of electrical energy.
- a battery can contain one or more cells.
- Rechargeable battery generally refers to a type of electrical battery which can be charged, discharged into a load, and recharged a number of times. In this disclosure, a number of examples are described based on Li-ion rechargeable batteries. Nevertheless, embodiments of the present invention are not limited to one type of rechargeable battery, and can be applied in conjunction with various rechargeable battery technologies.
- This disclosure includes methods of preparing electrode materials for use in rechargeable batteries.
- the present method allows for single crystal NCA materials to be produced without impurities which lead to “dead mass” in electrodes.
- a mixture of NCA(OH)2 and LiOHeThO is prepared with a Li:OM ratio less than 1.0.
- the Li:OM ratio is the ratio of the amount of lithium in the lithiated material to the amount of other metals in the lithiated material. This mixture is first heated to a temperature large enough to allow for single crystal growth. Because the Li:OM ratio is less than 1.0, the formation of L15AIO4 is avoided.
- the product is Lii- z (Nii-x-yCoxAly)i+ z 02 with z > 0.
- Such materials have poor electrochemical properties unless z is very near zero.
- a second heating a small amount of excess Li, q, is added so that: q > z
- the temperature of the second heating is chosen to be lower than that of the first heating so that the Li:OM ratio in the final product approaches 1.0 and that no L15AIO4 is created. In such a way, impurity-free single crystal NCA can be created.
- Methods disclosed herein include a first lithiation step, wherein a lithium and an other metal component are present in a first lithium/other metal ratio of less than 1.0 and are sintered at a temperature between 800 and 950°C for a time period between 1 and 24 hours to obtain a first lithiated material.
- the method further includes a second lithiation step, wherein a lithium and a other metal component are present in a second lithium/other metal ratio and further wherein the first lithiated electrode material is sintered with additional LiOHTLO at between 650 and 760°C for a time period between 1 and 24 hours to obtain a second lithiated material.
- the first lithiated material comprises a product having the formula Li(i-x)[Nio.88Coo.o9Alo.o3](i+x)02.
- the first lithium/other metal ratio is about 0.6, about 0.7, about 0.8, 0.9, about 0.95, or about 0.975.
- the first lithiated product is sintered for approximately 12 hours.
- the sum of the first lithium/other metal ratio and the second lithium/other metal ratio is between 1.0 and 1.03.
- the other metal component includes: Al, Ni, Co, Mn, Mg, or a combination of them. In other embodiments, the other metal component includes Ni, Co, and Al. In further embodiments, the other metal component includes Ni and Al.
- the present disclosure also provides an electrode formed using the methods described herein, and rechargeable batteries including the electrodes that are formed using the methods described herein. BRIEF DESCRIPTION OF THE DRAWINGS
- FIG. 1A shows Scanning Electron Microscopy (SEM) images of the NCA(OH)2 precursor with a 4 pm scale bar shown and
- FIG. 1B shows SEM images of the resulting NCA(OH) 2 product with alO pm scale bar shown.
- FIGs. 2a-21 show SEM images of the resulting product from a variety of first lithiation reactions with a 5 pm scale bar indicated. Shown in FIG. 2a is the result of a first lithiation reaction between NCA(OH) 2 and LiOH*FhO at 950°C with a Li/OM ratio of 0.95; FIG. 2b is the result of a first lithiation reaction at 900°C with a Li/OM ratio of 0.95; FIG. 2c is the result of a first lithiation reaction at 875°C with a Li/OM ratio of 0.95; FIG. 2d is the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.975; FIG.
- FIG. 2e is the result of a first lithiation reaction at 950°C with a Li/OM ratio of 0.90
- FIG. 2f is the result of a first lithiation reaction at 900°C with a Li/OM ratio of 0.925
- FIG. 2g is the result of a first lithiation reaction at 875°C with a Li/OM ratio of 0.925
- FIG. 2h is the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.95
- FIG. 2i is the result of a first lithiation reaction at 950°C with a Li/OM ratio of 0.80
- FIG. 2j is the result of a first lithiation reaction at 900°C with a Li/OM ratio of 0.90
- FIG. 2k is the result of a first lithiation reaction at 875°C with a Li/OM ratio of 0.90
- FIG. 21 is the result of a first lithiation reaction at 850°C with a
- FIGs. 3a to 31 show SEM images of four series of two-step lithiation products with a 5pm scale bar indicated.
- FIGs. 3(a), 3(b), 3(c), and 3(d) show the four selected post first lithiation products whose products of the second lithiation reaction of FIG. 2i are shown with Li/OM ratio of 1.01 (see FIG. 3e) and 1.02 (see FIG. 3i); products of the second lithiation reaction FIG. 2j are shown with a Li/OM ratio of 1.01 (see FIG. 31) and 1.02 (see FIG. 3j); products of the second lithiation reaction of FIG. 2c) are shown with a Li/OM ratio of 1.01 (see FIG. 3g) and 1.02 (see FIG. 3k); and products of the second lithiation reaction of FIG. 2d are shown with a Li/OM ratio of 1.01 (see FIG. 3h) and 1.02 (see FIG. 31).
- FIGs. 4a to 41 and 4A to 4L show partial x-ray diffraction patterns for the each of the samples depicted in FIGs. 3a to 31.
- the X-ray data in FIGs. 4a and 4A correspond to the sample shown in FIG. 3a, and so forth.
- an X-ray diffraction peak appears near 44.25°.
- this 104 peak appears near 44.40°.
- This behavior for the samples is shown in FIGs. 4a to 41.
- the 108/110 diffraction peaks appear as clearly split pair of Kai and Ka2 peaks in fully lithiated samples (see FIGs. 4h and 41).
- 4A to 4L show an expanded view of the portion of the diffraction pattern where peaks from impurity phases like L12CO3 and L15AIO4 appear. It is desired to have no visible impurity peaks, well split 108/110 peaks and a 104 peak near 44.4° as in FIGs. 4k and 4K. These comments apply to the particular NCA880903 composition studied here.
- FIG. 5 illustrates the percentage of nickel in the lithium layer (determined by x-ray profile refinement using the Rietveld method) after the second lithiation reactions for the first lithiation reaction at 875°C with a Li/OM ratio of 0.95, and subsequent second lithiation reactions, and the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.975 and subsequent second lithiation reactions. It is desired to have the percentage of Ni in the lithium layer as small as possible,
- FIGs. 6a to 6f show portions of the x-ray diffraction patterns of PC880903 and SC880903.
- PC880903 is a polycrystallme sample of NCA880903
- SC880903 is a single crystal sample of NCA880903 made with first lithiation at 875°C with a Li/OM ratio of 0.95, and subsequent second lithiation at 735°C with a final Li/OM ratio of 1.01. Notice that the diffraction peaks for SC880903 are much sharper than those of PC880903, consistent with larger crystallite grains expected from a single crystal sample.
- FIG. 7 illustrates typical experimental data studying charge-discharge cycling in a half coin cell at C/20 showing the voltage versus specific capacity of SC- NCA880903.
- the electrolyte used was 1M LiPFe in EC:DEC (1 :2). The testing was made at 30°C between voltage limits of 3.0V and 4.3V.
- FIG. 8 illustrates typical experimental data collected in a half coin cell at C/20 showing dQ/dV vs. V for SC-NCA880903.
- the electrolyte used was 1M LiPFe in EC:DEC (1 :2).
- the testing was made at 30°C between voltage limits of 3.0V and 4.3V.
- FIGs. 9a to 9b illustrate experimental data collected during charge- discharge cycling experiments in full coin cell at C/5 including specific capacity and normalized discharge capacity for SC-NCA880903 and PC-NCA880903 samples.
- the electrolyte used was either 1M LiPFe in EC: DEC (1 :2) with 2% VC or 1M LiPFe in EC: DEC (1 :2) without VC, called“control” here.
- the testing was made at 30°C between voltage limits of 3.0V and 4.2V.
- the PC-NCA880903 is a typical polycrystalline NCA sample.
- FIGs. 9a to 9b illustrate that the capacity retention for the single crystal sample is at least as good as the polycrystalline sample when 2% VC is used.
- FIGs. 10a to lOe illustrate experimental data showing the impurity Bragg diffraction peak relative intensity plotted as a function of sintering temperature and Li/OM ratio for 4 different first lithiation products (as shown in FIG. 10a, 10b, 10c, and lOd).
- FIG. lOe illustrates experimental data showing the relative intensity plotted as a function of sintering temperature and Li/OM ratio for 4 different first lithiation products.
- the two step synthesis process includes two lithiation steps.
- This sintering step might take between 1 hour to 24 hours depending on the temperature selected, the furnace configuration used and the final crystallite size desired.
- Li(i- X) [Nio.88Coo.o9Alo.o3](i+x)02 is obtained.
- the material is sintered with more LiOHTUO at standard NCA lithiation temperature (approximately 650 to 760°C) for approximately 12 hours. This sintering step might take between 1 hour to 24 hours depending on the temperature selected and the furnace configuration used.
- the amount of added LiOHTLO in the second lithiation step is determined by overall target of the Li/OM ratio in the final product.
- a Li/OM ratio of “b” in the first lithiation step if a Li/OM ratio of “b” is selected, then in the second lithiation step a further additional Li/OM ratio of“1.0 - b,”“1.01 - b”,“1.02 - b”, 1.03 - b”, etc. is selected depending on the amount of lithium loss anticipated in both the first and second lithiation steps.
- the sum of the Li/OM ratio in the first lithiation step and the Li/OM ratio in the second lithiation step is 1.0, 1.01, 1.02, or 1.03.
- the goal is to make a final product with a Li/OM ratio very near 1.00 and with very little Ni atoms in the Li layer of the material (less than 2%).
- Certain of these new battery systems may be used in energy-storage applications and also automobile application (including energy storage within an electric vehicle) in which charge and discharge speeds, and lifetime when charging and discharging quickly are important.
- NCA880903 precursor hydroxides were obtained from Guizhou Zoomwe
- FIG. 1A shows SEM images of the resulting NCA(OH)2 product with a 4 pm scale bar shown
- FIG. 1B shows SEM images of the resulting NCA(OH)2 product with a 10 pm scale bar shown.
- FIG. 2 shows SEM images, taken with a Phenom G2- Pro desktop SEM, of the resulting product from these first lithiation reactions shown with 5 pm scale bars. Shown in FIG. 2a is the result of a first lithiation reaction at 950°C with a Li/OM ratio of 0.95; FIG. 2b is the result of a first lithiation reaction at 900°C with a Li/OM ratio of 0.95; FIG. 2c is the result of a first lithiation reaction at 875°C with a Li/OM ratio of 0.95; FIG.
- FIG. 2d is the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.975
- FIG. 2e is the result of a first lithiation reaction at 950°C with a Li/OM ratio of 0.90
- FIG. 2f is the result of a first lithiation reaction at 900°C with a Li/OM ratio of 0.925
- FIG. 2g is the result of a first lithiation reaction at 875°C with a Li/OM ratio of 0.925
- FIG. 2h is the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.95
- FIG. 2i is the result of a first lithiation reaction at 950°C with a Li/OM ratio of 0.80
- FIG. 2j is the result of a first lithiation reaction at 900°C with a Li/OM ratio of 0.90
- FIG. 2k is the result of a first lithiation reaction at 875°C with a Li/OM ratio of 0.90
- FIG. 21 is the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.90.
- the samples were heated for 12 hours under a flow of O2 gas in a tube furnace equipped with an alumina tube to carry the O2 gas.
- FIGs. 3a to 31 show the products of the second lithiation reaction of FIG. 2i with Li/OM ratio of 1.01 and 1.02; second lithiation reaction of FIG. 2j with a Li/OM ratio of 1.01 and 1.02; second lithiation reaction of FIG. 2c with a Li/OM ratio of 1.01 and 1.02; and second lithiation reaction of FIG. 2d with a Li/OM ratio of 1.01 and 1.02.
- the products for the second lithiation reactions were further analyzed using X-ray diffraction where the x-ray diffraction intensity is plotted versus the scattering angle. Only portions of the diffraction patterns are shown.
- the X-ray data in FIG. 4a and FIG. 4A corresponds to the sample shown in FIG. 3a, and so forth.
- an X-ray diffraction peak appears near 44.25°.
- this 104 peak appears near 44.40°.
- This behavior for the samples is shown in FIG. 4a to 41.
- the 108/110 diffraction peaks appear as clearly split pair of Kai and K012 peaks in fully lithiated samples (see FIGs.
- FIGs. 4A to 4L show an expanded view of the portion of the diffraction pattern where peaks from impurity phases like L12CO3 and L15AIO4 appear. It is desired to have no visible impurity peaks, well split 108/110 peaks and a 104 peak near 44.4° as in FIGs. 4k and 4K. These comments apply to the particular NCA880903 composition studied here. [0032] Additionally, for two of the products of the second lithiation reactions, additional assessments were made of the percentage of nickel in the lithium layer using Rietveld X-ray profile analysis.
- FIG. 5 illustrates the percentage of nickel atoms in the lithium layer after the second lithiation reactions for the first lithiation reaction at 875°C with a Li/OM ratio of 0.95, and subsequent second lithiation reactions, and the result of a first lithiation reaction at 850°C with a Li/OM ratio of 0.975 and subsequent second lithiation reactions.
- SC880903 The single crystal NCA product made with a first lithiation temperature of 850°C and a Li/OM ratio of 0.975 followed by a second lithiation temperature of 735°C and an overall Li/OM ratio of 1.01 is called SC880903 or SC-NCA880903.
- SC880903 This sample is compared to a conventional NCA sample which has poly crystalline grains, called PC880903.
- the PC880903 sample was made in a single heating at 735°C with a Li/OM ratio of 1.02.
- Table 1 shows the structural information for the two samples extracted from the x-ray diffraction data in FIGs. 6a to 6f.
- Table 1 shows that the a and c lattice parameters (given in Angstroms) of the two samples are very similar indicating that the two-step heating procedure does create materials with equivalent structure to the materials made in a single heating step. Only the particle morphology differs. Table 1 also shows that both samples have less than 1% of Ni atoms in the Li layer. The Bragg agreement factor, Rt > , is less than 2.5% for both samples and indicates that the quality of the x-ray profile refinements, from which the structural parameters were extracted, is excellent.
- FIG. 7 illustrates typical experimental data studying charge-discharge cycling in a half coin cell at C/20 showing the voltage versus specific capacity of SC- NCA880903.
- the electrolyte used was 1M LiPFe in EC:DEC (1 :2). The testing was made at 30°C between voltage limits of 3.0V and 4.3V .
- EC:DEC 1 :2
- the testing was made at 30°C between voltage limits of 3.0V and 4.3V .
- FIG. 8 illustrates typical experimental data collected in a half coin cell at C/20 showing dQ/dV vs. V for SC-NCA880903.
- the electrolyte used was 1M LiPFe in EC:DEC (1 :2).
- the testing was made at 30°C between voltage limits of 3.0V and 4.3V.
- Those skilled in the art will recognize a typical dQ/dV vs. V profile for NCA880903.
- FIGs. 9a and 9b illustrate experimental data collected during charge- discharge cycling experiments in full coin cell at C/5 including specific capacity and normalized discharge capacity for SC-NCA880903 and PC-NCA880903 samples.
- the electrolyte used was either 1M LiPFe in EC: DEC (1 :2) with 2% VC or 1M LiPFe in EC: DEC (1 :2) without VC, called“control” here.
- the testing was made at 30°C between voltage limits of 3.0V and 4.2V.
- the PC-NCA880903 is a typical polycrystalline NCA sample.
- FIGs. 9a and 9b illustrate that the capacity retention for the single crystal sample is at least as good as the polycrystalline sample when 2% VC is used.
- FIG. 10a to lOd illustrate experimental data showing the most intense L15AIO4 impurity Bragg diffraction peak relative intensity plotted as a function of sintering temperature and Li/OM ratio for 4 different first lithiation products (as shown in FIG. 10a, 10b, 10c, and lOd).
- FIG. lOe illustrates experimental data showing the relative intensity plotted as a function of sintering temperature and Li/OM ratio for 4 different first lithiation products.
- the results in FIGs. 2 and 10 can be used to select the first lithiation conditions appropriately.
- joinder references e.g ., attached, affixed, coupled, connected, and the like
- joinder references are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer that two elements are directly connected to each other.
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EP19798822.3A EP3867965A1 (en) | 2018-10-20 | 2019-10-18 | Method for synthesizing nickel-cobalt-aluminum electrodes |
CN201980068990.3A CN112930609A (en) | 2018-10-20 | 2019-10-18 | Method for synthesizing nickel-cobalt-aluminum electrode |
JP2021521055A JP7361105B2 (en) | 2018-10-20 | 2019-10-18 | Synthesis method of nickel-cobalt-aluminum electrode |
KR1020217013568A KR20210076038A (en) | 2018-10-20 | 2019-10-18 | Synthesis method of nickel-cobalt-aluminum electrode |
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US16/265,128 US11152609B2 (en) | 2018-10-20 | 2019-02-01 | Method for synthesizing nickel-cobalt-aluminum electrodes |
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JP7476344B2 (en) | 2020-09-24 | 2024-04-30 | エルジー・ケム・リミテッド | Method for solid-phase synthesis of single particles of high-nickel-content lithium composite transition metal oxide positive electrode active material, single particles of high-nickel-content lithium composite transition metal oxide positive electrode active material formed by the method, and positive electrode and lithium secondary battery including the same |
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CN112831838A (en) * | 2020-12-31 | 2021-05-25 | 南通瑞翔新材料有限公司 | Preparation method of single crystal type nickel cobalt lithium aluminate anode material |
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