WO2007002907A2 - Lithium manganese compounds and methods of making the same - Google Patents
Lithium manganese compounds and methods of making the same Download PDFInfo
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- WO2007002907A2 WO2007002907A2 PCT/US2006/025694 US2006025694W WO2007002907A2 WO 2007002907 A2 WO2007002907 A2 WO 2007002907A2 US 2006025694 W US2006025694 W US 2006025694W WO 2007002907 A2 WO2007002907 A2 WO 2007002907A2
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- lithium metal
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- lithium
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- 238000000034 method Methods 0.000 title claims description 40
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical class [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 title description 9
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 83
- 150000001875 compounds Chemical class 0.000 claims abstract description 59
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 24
- 229910003007 LixMnO2 Inorganic materials 0.000 claims abstract description 19
- 239000007772 electrode material Substances 0.000 claims abstract description 7
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 29
- -1 acyclic hydrocarbons Chemical class 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 239000002019 doping agent Substances 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 150000004292 cyclic ethers Chemical class 0.000 claims description 3
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 150000002170 ethers Chemical class 0.000 claims 4
- 238000000498 ball milling Methods 0.000 claims 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 2
- 229930195733 hydrocarbon Natural products 0.000 claims 2
- 229910052726 zirconium Inorganic materials 0.000 claims 2
- 229910015329 LixMn2O4 Inorganic materials 0.000 claims 1
- 150000002697 manganese compounds Chemical class 0.000 claims 1
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 12
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 10
- GOPYZMJAIPBUGX-UHFFFAOYSA-N [O-2].[O-2].[Mn+4] Chemical class [O-2].[O-2].[Mn+4] GOPYZMJAIPBUGX-UHFFFAOYSA-N 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 19
- 229910052596 spinel Inorganic materials 0.000 description 18
- 239000011029 spinel Substances 0.000 description 18
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 15
- 238000002441 X-ray diffraction Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 229910010077 Li2MnO2 Inorganic materials 0.000 description 8
- 238000010304 firing Methods 0.000 description 8
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 7
- QEXMICRJPVUPSN-UHFFFAOYSA-N lithium manganese(2+) oxygen(2-) Chemical class [O-2].[Mn+2].[Li+] QEXMICRJPVUPSN-UHFFFAOYSA-N 0.000 description 7
- 101150073459 UROS gene Proteins 0.000 description 6
- 230000001351 cycling effect Effects 0.000 description 5
- 229910032387 LiCoO2 Inorganic materials 0.000 description 4
- 229910002993 LiMnO2 Inorganic materials 0.000 description 4
- 229910010226 Li2Mn2O4 Inorganic materials 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 229910003005 LiNiO2 Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- DLEDOFVPSDKWEF-UHFFFAOYSA-N lithium butane Chemical compound [Li+].CCC[CH2-] DLEDOFVPSDKWEF-UHFFFAOYSA-N 0.000 description 2
- 150000002642 lithium compounds Chemical class 0.000 description 2
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N n-Butyllithium Substances [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 229910006570 Li1+xMn2-xO4 Inorganic materials 0.000 description 1
- 229910006613 Li1+xMn2−x Inorganic materials 0.000 description 1
- 229910006628 Li1+xMn2−xO4 Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000713 high-energy ball milling Methods 0.000 description 1
- 238000006138 lithiation reaction Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- GEYXPJBPASPPLI-UHFFFAOYSA-N manganese(III) oxide Inorganic materials O=[Mn]O[Mn]=O GEYXPJBPASPPLI-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910006648 β-MnO2 Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/12—Manganates manganites or permanganates
- C01G45/1221—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof
- C01G45/1228—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof of the type [MnO2]n-, e.g. LiMnO2, Li[MxMn1-x]O2
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—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
-
- 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
- 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
- C01P2002/54—Solid solutions containing elements as dopants one element only
-
- 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
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- This invention generally relates to methods for forming lithium compounds, and the compounds formed by such methods. More particularly, this invention relates to methods for forming lithium manganese compounds and doped lithium manganese compounds by lithiation techniques.
- Attractive materials for use as cathode materials for lithium ion secondary batteries include LiCoO 2 , LiNiO 2 , and LiMn 2 O 4 .
- LiCoO 2 LiCoO 2
- LiNiO 2 LiNiO 2
- LiMn 2 O 4 LiMn 2 O 4 spinel compounds are believed to be overcharge safer and are desirable cathode materials for that reason.
- the specific capacity OfLiMn 2 O 4 is low.
- the theoretical capacity OfLiMn 2 O 4 is only 148 mA»hr/g and typically no more than about 115-120 niA»hr/g can be obtained with good cycleability.
- LiMn 2 O 4 can contain excess lithium on the 16d manganese sites and can be written as Li 1+x Mn 2-x 0 4 (0 ⁇ x ⁇ 0.33). Use of the formula LiMn 2 O 4 herein is understood to denote Li 1+x Mn 2-x O 4 as well.
- the orthorhombic LiMnO 2 and the tetragonally distorted spinel Li 2 Mn 2 O 4 have the potential for larger capacities than those obtained with the LiMn 2 O 4 spinel.
- cycling over the full capacity range for LiMnO 2 and Li 2 Mn 2 O 4 results in a rapid capacity fade.
- Layered LiMn ⁇ 2 quickly converts to a spinel form upon cycling which also results in a capacity fade.
- Li 2 MnO 2 compounds have also been considered as electrode materials.
- U.S. Patent No. 4,980,251 to Thackeray proposes that Li 2 MnO 2 can be formed having a theoretical capacity of 530 niA # hr/g by reacting LiMn 2 O 4 spinel compounds with n-BuLi as follows:
- the Li 2 MnO 2 has a hexagonal close packed layered structure, similar to the structure of LiCoO 2 , except that the Li + ions in Li 2 MnO 2 occupy the tetrahedral sites instead of the octahedral sites as in LiCoO 2 .
- the Li 2 MnO 2 compounds formed according to Thackeray's methods are unstable.
- Thackeray notes that the layered structure of Li 2 MnO 2 is unstable and that it converts back to the spinel framework upon delithiation. This is undesirable because repeated conversion between layered and spinel structures decreases capacity retention and results in voltage gaps.
- a doped lithium manganese oxide preferably exhibits a high usable reversible capacity and good cycleability to maintain reversible capacity during cycling.
- LiMn 2 O 4 can generally only be operated at 115-120 mA # hr/g with good cycleability.
- Li 2 MnO 2 compounds are expensive to make and are unstable when made according to available methods. Therefore, there is a need to produce a lithium metal oxide that exhibits an improved reversible capacity and good cycleability while maintaining thermal stability.
- Embodiments of the present invention include methods for making lithium manganese oxide compounds and doped lithium manganese oxide compounds.
- the lithium manganese compounds and doped lithium manganese oxide compounds formed according to embodiments of the present invention can be used to form electrodes and electrode materials for use in batteries, such as rechargeable lithium ion batteries.
- a doped lithium manganese spinel compound is mixed with lithium metal to produce a doped Li x MnO 2 compound where 0.2 ⁇ x ⁇ 2.
- the mixing of the spinel compound and lithium metal can be performed with or without a solvent.
- Mixing of the spinel compound and lithium metal can be performed using processes capable of energetically mixing the doped lithium manganese spinel compound and lithium metal, such as by high energy ball milling.
- the mixing preferably provides as much contact between the spinel compound and the lithium metal as possible.
- a doped lithium manganese spinel compound can include compounds such as those disclosed by U.S. Patent No. 6,267,943 to Manev et al., which is incorporated in its entirety herein by reference.
- the lithium metal is preferably a stabilized lithium metal powder such as those disclosed by U.S. Patent Nos. 5,567,474 and 5,776,369 to Dover et al., which are incorporated herein by reference in their entireties.
- One of the added advantages of the present invention is that the amount of lithium x in Li x MnO 2, where 0.2 ⁇ x ⁇ 2, can be easily controlled and varied by varying the amount of the lithium metal used in synthesis, unlike high temperature solid state synthesis where the x value is governed by the high temperature phase diagram and may not be changed at will.
- a manganese dioxide such as a heat treated electrolytic manganese dioxide (EMD) compound can be mixed with a lithium metal to lithiate the manganese dioxide compound.
- the lithiated manganese dioxide such as the lithiated EMD material can be used as an electrode material in rechargeable lithium ion batteries.
- the lithium metal powder is preferably a stabilized lithium metal powder such as those disclosed by U.S. Patent Nos. 5,567,474 and 5,776,369 to Dover et al.
- Electrodes for use in batteries, and particularly for use with rechargeable lithium ion cell batteries, can be formed using the Li x MnO 2 where 0.2 ⁇ x ⁇ 2 compounds or lithiated EMD materials formed according to embodiments of the present invention.
- Figure 1 is a graphic comparison of x-ray diffraction patterns according to
- Figure 2 is a graphic comparison of x-ray diffraction patterns according to
- Figure 3 is a graph of Voltage (V) versus Specific Capacity (mAH/g) relating to Example 2.
- Figure 4 is a graphic comparison of x-ray diffraction patterns according to Examples 3 and 4, and Comparative Example 1.
- Figure 5 is a graph of Voltage (V) versus Specific Capacity (mAH/g) relating to Example 3.
- Embodiments of the present invention include methods for making lithium manganese oxide compounds and doped lithium manganese oxide compounds.
- the lithium manganese compounds and doped lithium manganese oxide compounds formed according to embodiments of the present invention can be used to form electrodes and electrode materials for use in batteries, such as rechargeable lithium ion batteries.
- the lithium manganese oxide compound can be a doped lithium manganese oxide compound.
- a doped lithium manganese oxide compound having the formula Li 2 Mn 1- ⁇ A ⁇ O 2 can be formed, wherein A is a dopant and 0 ⁇ a ⁇ 0.5.
- a lithium manganese oxide compound having the formula Li x MnO 2 where 0.2 ⁇ x ⁇ 2, often 0.5 ⁇ x ⁇ 2 can be formed according to embodiments of the present invention by mixing an LiMn 2 O 4 spinel compound with lithium metal.
- the LiMn 2 O 4 compound comes in contact with the lithium metal, the compound accepts the lithium and converts to the desired Li x MnO 2 compound.
- an LiMn 2 O 4 compound can be mixed with lithium metal in a ball mill to form Li x MnO 2 .
- the lithium metal is preferably a stabilized lithium metal powder.
- the mixing of the LiMn 2 O 4 compound can be performed using any mixing techniques, however, mixing that improves the amount of contact between the LiMn 2 O 4 compound and the lithium metal is preferred.
- the lithium metal in one embodiment, can be added all at once. In another embodiment, the lithium is added in smaller increments, e.g. x/4 or less. Such addition avoids distortion of the x-ray diffraction pattern, and allows the Li x MnO 2 compound to maintain an x-ray diffraction (crystallinity) pattern similar to that of EMD.
- the lithium metal used with embodiments of the present invention can include stabilized lithium metal powder ("SLMP").
- SLMP stabilized lithium metal powder
- FMC Corporation produces a stabilized lithium metal powder under the name Lectro® Max Powder that may be used with embodiments of the present invention.
- Other lithium metal powders may also be used.
- U.S. Patent No. 5,567,474 and U.S. Patent No. 5,776,369 describe stabilized lithium metal powders and processes for making such powders that can be used with the embodiments of the present invention.
- Stabilized lithium metal powders allow the methods of embodiments of the present invention to be performed with increased safety.
- lithium metal powders that are not stabilized can also be used with embodiments of the present invention.
- additional processes can be employed to improve the safety of the reactions. For example, the mixing of an LiMn 2 O 4 compound with the non-stabilized lithium metal or lithium metal powder can be performed in an inert atmosphere to inhibit undesired reactions of the lithium metal with the atmosphere.
- a doped Li x MnO 2 compound can be formed by mixing a doped LiMn 2 O 4 compound with lithium metal.
- the doped LiMn 2 O 4 compounds can include LiMn 2 O 4 compounds doped with dopants such as cobalt (Co), nickel (Ni), magnesium (Mg) 5 titanium (Ti), zirconium (Zr), chromium (Cr), or other dopants used in the production of electrode materials for use with batteries and rechargeable lithium-ion batteries.
- the lithium metal is preferably a stabilized lithium metal powder.
- the mixing of lithium metal with LiMn 2 O 4 or doped LiMn 2 O 4 spinel compounds can be performed in a ball mill or according to other mixing techniques.
- the mixing preferably includes energetic mixing which increases the mixing of the compounds, improving the amount of contact between the LiMn 2 O 4 compounds and the lithium metal.
- the mixing of lithium metal with LiMn 2 O 4 can be performed with or without a solvent. If a solvent is used, the solvent is preferably compatible with lithium such that the lithium metal does not react with the solvent during the mixing.
- Solvents that can be used with embodiments of the present invention include, but are not limited to, acyclic and cyclic hydrocarbons, including n-hexane, n-heptane, cyclohexane, and the like; aromatic hydrocarbons such as toluene, xylene, isopropylbenzene (cumene), and the like; symmetrical, unsymmetrical, and cyclic ethers, including di-n-butyl ether, methyl t-butyl ether, tetrahydrofuran, and the like.
- the LiMn 2 O 4 compounds can be produced by calcining a mixture of at least one manganese oxide, at least one lithium compound, and optionally at least one dopant in a firing step at a temperature between 400 0 C and 900 0 C.
- the manganese oxide compounds can include such compounds as Mn 2 O 3 , Mn 3 O 4 , electrolytic manganese dioxide, and ⁇ -MnO 2 , and the firing step can include multiple firing steps.
- the mixture of source compounds is fired at between about 400 0 C and about 900 0 C.
- the mixture is calcined using more than one firing step at firing temperature with this temperature range.
- agglomeration of the spinel particles is preferably prevented.
- agglomeration can be prevented by firing the source compounds in a fluid bed furnace or rotary calciner during at least a portion of the firing steps or by grinding the spinel material between steps.
- the manganese oxide compounds produced in this manner can be formed into LiMn 2 O 4 compounds that can be used with embodiments of the present invention.
- other methods for forming lithium manganese oxides may be used with embodiments of the present invention.
- the methods and compounds of U.S. Patent Numbers 6,267,943; 6,423,294; and 6,517,803 may be used with embodiments of the present invention.
- the lithiated EMD materials formed according to embodiments of the present invention exhibit a capacity of about 150 mA » hr/g to about 160 mA»hr/g when incorporated into an electrode.
- the lithiated EMD materials of the present invention can be made cheaply because EMD compounds are readily available and easily produced.
- the lithiated EMD materials of the present invention can be used as low cost materials for forming electrodes for use with lithium ion batteries.
- Embodiments of the invention also include batteries and electrodes formed from compounds and materials produced according to embodiments of the present invention.
- An electrode for use with a lithium ion battery can be formed from the Li x MnO 2 compounds or doped Li x MnO 2 compounds formed according to embodiments of the present invention.
- the lithiated EMD materials formed according to embodiments of the present invention can be used to form electrodes for use in lithium ion batteries.
- the Li x MnO 2 compounds and lithiated EMD materials formed according to embodiments of the present invention can be used to form anodes or cathodes for use in batteries and especially for use with rechargeable lithium ion batteries.
- Lithium is added into a heat treated electrolytic manganese dioxide ("HEMD"). Electrolytic manganese dioxide available for Erachem-Comilog was ground to reduce the particle size and heat treated at 400oC for 12 hours to obtaind heat treated electrolytic manganese. The lithium is added in small increments of 0.075 moles of Li per one mole of manganese oxide. The addition is done in glove box at room temperature and stainless steel ball mill jar is used as a mixing vessel.
- HEMD heat treated electrolytic manganese dioxide
- Figure 1 shows the x-ray diffraction patters of HEMD with no lithium and the various total addition amounts (0.30 moles Li to 0.58 moles Li). Comparison of the x-ray diffraction patterns demonstrates that the lithium can be added incrementally without distorting the structure of the HEMD to maintain the HEMD-like structure.
- Li 0 . 3 MnO 2 is prepared by two ways. In Comparative Example 1, all 0.3 moles of lithium to one mole manganese oxide are added at once. In Example 2, the lithium is added in increments of 0.075 moles lithium to one mole manganese oxide.
- the x-ray diffraction pattern of Figure 2 shows a well crystalline spinel-like structure for the LiC 3 MnO 2 of Comparative Example 1. This is contrasted to the x-ray diffraction pattern for Example 2 which shows a pattern similar to that of the HEMD raw material sample and graphically indicates very little distortion therefrom.
- Figure 3 shows electrochemical results.
- the Li 0-3 MnO 2 of Example 2 shows an increase of first charge efficiency from 45 percent to 93 percent as compared to the one-step addition process of Comparative Example 1.
- the voltage profile was sustained for over 10 cycles which implies no structural changes occurred. Such sustaining of the voltage profile indicates such a material is a good candidate for 3 V rechargeable lithium batteries.
- Li 0 . 6 MnO 2 is prepared by three ways. In Comparative Example 2, all of the 0.6 moles of lithium to one mole of manganese oxide are added at once. In Example 3, the 0.6 moles of lithium to one mole of manganese oxide are added in increments of 0.15 moles. In Example 4, the lithium is added in increments of 0.075 moles of lithium to one mole of manganese oxide.
- the x-ray diffraction pattern for Comparative Example 2 in Figure 4 shows a well- crystalline spinel-like structure for the Li 0-6 MnO 2 but is distorted as compared to the HEMD raw material sample. This is contrasted to Examples 3 and 4 which show patterns similar to that of the HEMD raw material sample and indicates very little distortion.
- Figure 5 shows electrochemical results.
- the Li 0-6 MnO 2 of Example 3 shows an increase of first charge efficiency from 39 percent to 81 percent as compared to the one-step addition process of Comparative Example 2.
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Abstract
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CA2610077A CA2610077C (en) | 2005-06-29 | 2006-06-29 | Lithium manganese compounds and methods of making the same |
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KR1020077030597A KR101368855B1 (en) | 2005-06-29 | 2006-06-29 | Lithium manganese compounds and methods of making the same |
GB0721258A GB2439890B (en) | 2005-06-29 | 2006-06-29 | Lithium manganese compounds and methods of making the same |
CN2006800238545A CN101213146B (en) | 2005-06-29 | 2006-06-29 | Lithium manganese compounds and methods of making the same |
DE112006001610.5T DE112006001610B4 (en) | 2005-06-29 | 2006-06-29 | Process for producing lithium-manganese compounds |
KR1020137004550A KR101389409B1 (en) | 2005-06-29 | 2006-06-29 | Lithium manganese compounds and methods of making the same |
JP2008519633A JP5096329B2 (en) | 2005-06-29 | 2006-06-29 | Lithium manganese compound and method for producing the same. |
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CN103119758A (en) * | 2010-08-11 | 2013-05-22 | 株式会社Kri | Predoping method for lithium, method for producing electrodes, and electric power storage device using these methods |
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US20140077127A1 (en) | 2014-03-20 |
CN101213146A (en) | 2008-07-02 |
CN101213146B (en) | 2012-07-18 |
KR101389409B1 (en) | 2014-04-25 |
CA2610077A1 (en) | 2007-01-04 |
CA2840566A1 (en) | 2007-01-04 |
DE112006001610B4 (en) | 2023-09-14 |
US20070003834A1 (en) | 2007-01-04 |
US7771874B2 (en) | 2010-08-10 |
EP1896366B1 (en) | 2018-01-10 |
RU2007149066A (en) | 2009-07-10 |
WO2007002907A3 (en) | 2007-05-18 |
JP2009500277A (en) | 2009-01-08 |
KR20080021710A (en) | 2008-03-07 |
GB2439890B (en) | 2011-06-08 |
GB2439890A (en) | 2008-01-09 |
EP1896366A2 (en) | 2008-03-12 |
US9896345B2 (en) | 2018-02-20 |
DE112006001610T5 (en) | 2008-05-29 |
CA2840566C (en) | 2016-12-06 |
US20100270498A1 (en) | 2010-10-28 |
KR101368855B1 (en) | 2014-03-17 |
JP5096329B2 (en) | 2012-12-12 |
KR20130033458A (en) | 2013-04-03 |
CA2610077C (en) | 2014-04-08 |
GB0721258D0 (en) | 2007-12-05 |
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