WO2020069618A1 - Matériaux d'électrode comprenant un oxyde lamellaire de sodium et de métal, électrodes les comprenant et leur utilisation en électrochimie - Google Patents
Matériaux d'électrode comprenant un oxyde lamellaire de sodium et de métal, électrodes les comprenant et leur utilisation en électrochimieInfo
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- WO2020069618A1 WO2020069618A1 PCT/CA2019/051412 CA2019051412W WO2020069618A1 WO 2020069618 A1 WO2020069618 A1 WO 2020069618A1 CA 2019051412 W CA2019051412 W CA 2019051412W WO 2020069618 A1 WO2020069618 A1 WO 2020069618A1
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- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- 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
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- C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
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- C01G51/00—Compounds of cobalt
- C01G51/40—Cobaltates
- C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
- C01G51/44—Cobaltates containing alkali metals, e.g. LiCoO2 containing manganese
- C01G51/50—Cobaltates containing alkali metals, e.g. LiCoO2 containing manganese of the type [MnO2]n-, e.g. Li(CoxMn1-x)O2, Li(MyCoxMn1-x-y)O2
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- C01G53/00—Compounds of nickel
- C01G53/40—Nickelates
- C01G53/42—Nickelates containing alkali metals, e.g. LiNiO2
- C01G53/44—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese
- C01G53/50—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese of the type [MnO2]n-, e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
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- 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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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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- H—ELECTRICITY
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- 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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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- 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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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- 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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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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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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- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
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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
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- 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 application relates to the field of electrochemically active materials and their uses in electrochemical applications. More particularly, the present application generally relates to electrode materials comprising a lamellar oxide of sodium and of metal as an electrochemically active material, the electrodes comprising them, their methods of manufacture and their use in electrochemical cells. STATE OF THE ART
- Lamellar oxides of lithium and metal of formula L1MO2 transition metal
- the oxides of lamellar structure such as cobalt and lithium dioxide (LiCoO2) and nickel and lithium dioxide (LiNi02) positive electrode materials used commercially in lithium-ion batteries (BLIs).
- Lamellar L1MO2 can be classified according to their stacking geometry. The different types of stacks differ in the sequence of the oxygen layers, modifying the arrangement of the sheets (MO2) as well as the geometry of the sites occupied by the lithium ions.
- the oxygen environment of the lithium ion can be, for example, octahedral (O), prismatic (P) or tetrahedral (T).
- Lamellar L1MO2 can also be characterized by the number of MO2 sheets found inside a unit cell.
- the structure of lamellar L1MO2 significantly influences the electrochemical properties of the material such as its capacity, its cyclability, and its charge rate and discharge.
- Lamellar structures of type P2 and 03 are, for example, of interest for use in electrochemical cells.
- an electrode material comprising a lamellar oxide of type P2 and / or 03 as an electrochemically active material and excluding one or more of the drawbacks of conventional lamellar oxide materials.
- the present technology relates to an electrode material comprising an electrochemically active material, the electrochemically active material comprising a lamellar oxide of sodium and metal of formula Na x M02, in which 0.5 ⁇ x ⁇ 1.0, and M is chosen from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrochemically active material comprises a lamellar oxide of sodium and of metal chosen from:
- a P2 type metal and sodium lamellar oxide of formula Na x M02 in which x is a number such that 0.5 ⁇ x ⁇ 0.8 and M is chosen from Co, Mn, Fe, Ni, Ti, Cr, V, Cu and combinations thereof; and a lamellar sodium and metal oxide of type 03 of the formula Na x M02, in which x is a number such that 0.8 ⁇ x ⁇ 1.0, 0 and M is chosen from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrochemically active material comprises a lamellar oxide of sodium and metal of formula NaxM'i -y M y 02, in which x and M are as defined here, y is a number such as 0 ⁇ y ⁇ 1, 0 and M 'is different from M and is chosen from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrochemically active material comprises a lamellar oxide of sodium and metal of formula Na x M'i -y Mn y 02, in which x is as defined herein and in which y is such that 0 ⁇ y ⁇ 1, 0 and M 'is chosen from Co, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrode material also comprises an electronic conductive material chosen from carbon black, acetylene black, graphite, graphene, carbon fibers, carbon nanofibers, nanotubes carbon, and combinations thereof.
- the electrode material further comprises a binder selected from the group consisting of a polymer binder of the polyether type, a fluoropolymer and a water-soluble binder.
- the present technology relates to an electrode comprising the electrode material as defined here on a current collector.
- the electrode is a positive electrode.
- the present technology relates to an electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, in which the positive electrode is as defined here.
- the negative electrode comprises metallic lithium.
- the negative electrode includes metallic sodium.
- the electrolyte is a liquid electrolyte comprising a salt in a solvent.
- the electrolyte is a gel electrolyte comprising a salt in a solvent and optionally a solvating polymer.
- the electrolyte is a solid polymer electrolyte comprising a salt in a solvating polymer.
- the salt is a lithium salt.
- the salt is a sodium salt.
- the present technology relates to a battery comprising at least one electrochemical cell as defined here.
- the battery is chosen from a lithium-ion battery and a sodium-ion battery.
- Figure 1 is an X-ray diffraction diagram for a type P2 lamellar sodium and cobalt oxide powder and of formula Nao, sCo02 obtained using the solid state process.
- Figure 2 is an X-ray diffraction diagram for a mixed lamellar oxide powder of sodium and transition metals type 03 and of formula
- NaNio, 4Coo, 2Mno, 402 obtained using the solid state process.
- Figure 3 shows the charge and discharge profiles of Cell 1, the charge and discharge being performed at 0.1 C, and recorded vs Li / Li + at a temperature of 25 ° C.
- Figure 4 shows the charge and discharge profiles of Cell 1 at different cycling speeds, the charge and discharge being carried out at 0, 1 C, 0.2C, 0.5C, 1 C, 2C and 4C and recorded vs Li / Li + at a temperature of 25 ° C.
- Figure 5 shows a graph representing the capacity (mAh / g) as a function of the number of cycles, that is to say an aging curve for Cell 1.
- the experiment of long cycling or cycling in stability was carried out at a constant charge / discharge current of 1 C and the results were recorded vs Li / Li + at a temperature of 25 ° C.
- Figure 6 shows the charge and discharge profiles of Cell 2. The charge and discharge were carried out at 0.3C between 2.0 and 4.4 V vs Li / Li + at a temperature of 50 ° C.
- Figure 7 shows the charge and discharge profiles of Cell 2.
- the charge and discharge were carried out at 0.3C between 2.0 and 4.4 V vs Li / Li + at a temperature of 80 ° C.
- Figure 8 shows the charge and discharge profiles of Cell 3.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Figure 9 presents the charge and discharge profiles of Cell 3 at different cycling speeds, the charges and discharges being carried out at 0, 1 C, 0.2C, 0.5C, 1 C, 2C and 4C and recorded vs Li / Li + at a temperature of 25 ° C.
- Figure 10 shows a graph representing the capacity (mAh / g) as a function of the number of cycles for Cell 3.
- the long cycling experiment was carried out at a constant charge / discharge current of 2C and the results were recorded.
- Figure 11 shows the initial charge and discharge curves for Cell 4.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° vs.
- Figure 12 shows two charge and discharge profiles for Cell 5, i.e. the first cycle and the fifth cycle. Charging and discharging were carried out at 0.3C between 2.0 and 4.0 V vs Li / Li + at a temperature of 80 ° C.
- Figure 13 shows the charge and discharge profiles of Cell 6, the charge and discharge being carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C.
- Figure 14 shows the charge and discharge profiles of Cell 7, the charge and discharge being carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C.
- Figure 15 shows the charge and discharge profiles of Cell 8, the charge and discharge being carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C.
- Figure 16 shows the charge and discharge profiles of Cell 9, the charge and discharge being carried out at 0.1 C between 2.0 and 4.5 V vs Li / Li + at a temperature of 25 ° C.
- Figure 17 shows the charge and discharge profiles of Cell 10, the charge and discharge being carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C.
- Figure 18 shows the charge and discharge profiles of Cell 11, the charge and discharge being carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C.
- Figure 19 shows a graph representing the capacity (mAh / g) as a function of the number of cycles for Cell 11.
- the long cycling experiment was carried out at a constant charge / discharge current of 0.1 C and the results were recorded vs Li / Li + at a temperature of 25 ° C.
- Lamellar oxide of sodium and at least one metallic element has a stack of type P2 or type 03.
- the metallic element is a metal, for example, a transition metal, a post-transition metal, a metalloid, an alkali metal, an alkaline earth metal or combinations thereof.
- the metal is selected from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Sb and a combination of at least two of these.
- the electrochemically active material comprises a lamellar oxide of sodium and metal of formula Na x M02, in which x is a number such that 0.5 ⁇ x ⁇ 1.0, 0 and M is chosen from Co, Mn, Fe , Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrochemically active material comprises a lamellar sodium and metal oxide of type P2 of formula Na x M02, in which x is a number such that 0.5 ⁇ x ⁇ 0.8 and M is chosen from Co , Mn, Fe, Ni, Ti, Cr, V, Cu and their combinations.
- the electrochemically active material comprises a lamellar sodium and metal oxide of type 03 of the formula Na x M02, in which x is a number such that 0.8 ⁇ x ⁇ 1, 0 and M is chosen from Co , Mn, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrochemically active material is a lamellar oxide of sodium and of cobalt of formula Na x CoO2, in which x is as defined here.
- the lamellar oxide of sodium and cobalt has a P2-type stack.
- An example of lamellar oxide of sodium and cobalt corresponds to the formula Nao.sCoC.
- the electrochemically active material is a lamellar oxide of sodium and manganese of formula Na x MnO2, in which x is as defined here.
- an electrochemically active material comprises a mixed lamellar oxide of formula Na x M'i -y MyO2, in which x and M are as defined here, y is a number such that 0 ⁇ y ⁇ 1, 0 and M 'and is chosen from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations, where M and M' are different.
- the electrochemically active material comprises a mixed lamellar oxide of sodium, manganese and metal of formula Na x M'i -y MnyO2, in which x and y are as defined here and M 'is chosen from Co, Fe, Ni, Ti, Cr, V, Cu, Sb and their combinations.
- the electrochemically active material is chosen from mixed lamellar oxides of formulas Na x (NiCo) i -y Mn y 02, Na x Coi -y Mn y 02, Na x Nii- y Mn y 02 and Na x (CoTi ) i -y Mni -y 02, in which x and y are as defined here.
- Non-limiting examples of electrochemically active materials include Nao, 5Co02, Nao, 67Co02, Nao, 67Coo, 67Mno, 3302, Nao, 67Nio, 33Mno, 6702, Nao, 67Coo, 6Mno, 402, Nao, 67Coo, 55Mno, 4502, Nao , 67Coo, 5Mno, 502, Nao, 67Coo, 5oMno, 33Tio, i702, Nao, 6Mn02,
- the electrochemically active material can optionally be doped with other elements or impurities included in smaller quantities, for example to modulate or optimize its electrochemical properties.
- the electrochemically active material can be doped by the partial substitution of the metal (M) by other ions.
- the electrochemically active material can be doped with a transition metal (for example Fe, Co, Ni, Mn, Ti, Cr, Cu, V) and / or a metal other than a transition metal (for example, Mg, Al, Sb).
- the electrochemically active material as described herein is preferably substantially free from lithium.
- the electrochemically active material comprises less than 2% by weight, less than 1% by weight, less than 0.5% by weight, less than 0.1% by weight, less than 0.05% by weight or less 0.01% by weight of lithium.
- the electrochemically active material can therefore potentially reduce production costs compared to the corresponding type P2 or type 03 lithium oxide and metal structures.
- the electrochemically active material can also maintain the same structure as the corresponding P2 or type 03 lithium oxide and metal structures and have similar electrochemical performance.
- the present technology also relates to electrode materials comprising the electrochemically active material as defined here.
- the electrode material as described here can also comprise an electronic conductive material.
- electronic conductive material include a carbon source such as carbon black, Ketjen MC carbon, Super P MC carbon, acetylene black, Shawinigan carbon, Denka MC carbon black, graphite , graphene, carbon fibers (eg, carbon fibers formed in the gas phase (VGCFs)), carbon nanofibers, carbon nanotubes, or a combination of at least two of these.
- the electronic conductive material is Ketjen MC carbon.
- the electronic conductive material is carbon Super P MC .
- the electronic conductive material is VGCFs.
- the electrode material as described herein may also further include a binder.
- the binder is chosen for its compatibility with the various elements of an electrochemical cell. Any known compatible binder is envisaged.
- the binder is chosen from a polymer binder of the polyether type, a fluoropolymer and a binder soluble in water (water soluble).
- the binder is a fluoropolymer such as polyvinylidene fluoride (PVdF) or polytetrafluoroethylene (PTFE).
- the binder is a water-soluble binder such as styrene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR), hydrogenated NBR (FINBR), epichlorohydrin rubber (CFIR) , or acrylate rubber (ACM), and optionally comprising a thickening agent such as carboxymethylcellulose (CMC), or a polymer such as poly (acrylic acid) (PAA), poly (methyl methacrylate) (PMMA) or a combination of these.
- the binder is a polymeric binder of the polyether type.
- the polyether polymer binder is linear, branched and / or crosslinked and is based on poly (ethylene oxide) (PEO), poly (propylene oxide) (PPO) or on a combination of the two (such as an EO / PO copolymer), and optionally comprises crosslinkable units.
- the binder is PVdF or a polymer of polyether type as defined here.
- the electrode material as described here may optionally further comprise additional components or additives such as inorganic particles, glass or ceramic particles, ionic conductors, salts (for example, lithium salts) and other similar additives.
- additional components or additives such as inorganic particles, glass or ceramic particles, ionic conductors, salts (for example, lithium salts) and other similar additives.
- the present technology also relates to an electrode comprising the electrode material as defined here on a current collector (for example, aluminum, copper) alternatively the electrode can be self-supporting.
- the electrode is a positive electrode.
- the present technology also relates to an electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, in which the positive electrode is as defined here.
- the electrochemically active material of the negative electrode or counter-electrode can be chosen from all known compatible materials.
- the electrochemically active material of the negative electrode can be selected for its electrochemical compatibility with the electrochemically material active as defined here.
- the electrochemically active material of the negative electrode may comprise an alkali metal film, for example, a metallic lithium film, a metallic sodium film or a film of an alloy comprising at least one of these. this.
- the electrolyte is also chosen for its compatibility with the various elements of the electrochemical cell. Any type of compatible electrolyte is envisaged.
- the electrolyte is a liquid electrolyte comprising a salt in a solvent.
- the electrolyte is a gel electrolyte comprising a salt in a solvent and optionally a solvating polymer.
- the electrolyte is a solid polymer electrolyte comprising a salt in a solvating polymer.
- the salt is preferably an ionic salt such as a lithium salt or a sodium salt.
- lithium salts include lithium hexafluorophosphate (LIPF6), lithium bis (trifluoromethanesulfonyl) imide (LiTFSI), bis (fluorosulfonyl) lithium imide (LiFSI), 2-trifluoromethyl-4,5 - lithium dicyano-imidazolate (LiTDI), lithium 4,5-dicyano-1,2,3-triazolate (LiDCTA), lithium bis (pentafluoroethylsulfonyl) imide (LiBETI), lithium tetrafluoroborate (L1BF4), lithium bis (oxalato) borate (LiBOB), lithium nitrate (L1NO3), lithium chloride (LiCI), lithium bromide (LiBr), lithium fluoride (LiF), lithium perchlorate (L1CIO4 ), lithium hexafluophosphat
- the lithium salt is LiPF6.
- the lithium salt is LiFSI.
- the lithium salt is LiTFSI.
- Nonlimiting examples of sodium salts include the salts described above where the lithium ion is replaced by a sodium ion.
- the solvent if present in the electrolyte can be a polar and aprotic non-aqueous solvent.
- solvents include cyclic carbonates such as ethylene carbonate (EC), propylene carbonate (PC), carbonate of butylene (BC) and vinylene carbonate (VC); acyclic carbonates such as dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC) and dipropyl carbonate (DPC); lactones such as ⁇ -butyrolactone (g-BL) and g-valerolactone (g-VL); non-cyclic ethers such as 1,2-dimethoxyethane (DME), 1,2-diethoxyethane (DEE), ethoxy methoxy ethane (EME), trimethoxymethane, and ethylmonoglyme; cyclic ethers such as tetrahydrofuran, 2-methyltetrahydrofuran,
- An example of an electrolyte includes lithium hexafluorophosphate (LiPFe) dissolved in a mixture of non-aqueous solvents such as a mixture of ethylene carbonate and diethyl carbonate (EC / DEC) ([3: 7] by volume) or a mixture of ethylene carbonate and dimethyl carbonate (EC / DMC) ([4: 6] by volume).
- a mixture of non-aqueous solvents such as a mixture of ethylene carbonate and diethyl carbonate (EC / DEC) ([3: 7] by volume) or a mixture of ethylene carbonate and dimethyl carbonate (EC / DMC) ([4: 6] by volume).
- the electrolyte is a gel electrolyte or a gel polymer electrolyte.
- the gel polymer electrolyte can comprise, for example, a polymer precursor and a salt (for example, a salt as defined above), a solvent and a polymerization and / or crosslinking initiator, if necessary.
- Nonlimiting examples of gel electrolyte include, without limitation, the gel electrolytes described in the PCT patent applications published under the numbers WO2009 / 111860 (Zaghib et al.) And WO2004 / 068610 (Zaghib et al.).
- the electrolyte can also be a solid polymer electrolyte (SPE) comprising a salt in a solvating polymer.
- SPE solid polymer electrolyte
- Any type of known compatible SPE is envisaged.
- the SPE is chosen for its compatibility with the various elements of the electrochemical cell.
- SPE is selected for its compatibility with lithium and / or sodium.
- the SPEs can generally comprise a salt as well as one or more solid polar polymer (s), optionally crosslinked.
- Polyether polymers such as those based on poly (ethylene oxide) (PEO) can be used, but several other compatible polymers are also known for the preparation of SPE and are also envisaged.
- the polymer can also be crosslinked. Examples of such polymers include branched polymers, for example, star polymers or comb polymers such as those described in the PCT patent application published under the number WO2003 / 063287 (Zaghib et al.).
- a gel electrolyte or a liquid electrolyte as defined above can also impregnate a separator such as a polymer separator.
- separators include polyethylene (PE), polypropylene (PP), cellulose, polytetrafluoroethylene (PTFE), poly (vinylidene fluoride) (PVdF) and polypropylene-polyethylene-polypropylene (PP / PE) membranes. / PP).
- the separator is a commercial polymer separator of the Celgard MC type.
- the electrolyte can also optionally include additional components or additives such as ionic conductors, inorganic particles, glass or ceramic particles; for example, nanoceramics (such as AI2O3, T1O2, S1O2 and other similar compounds) and other similar additives.
- additional components or additives such as ionic conductors, inorganic particles, glass or ceramic particles; for example, nanoceramics (such as AI2O3, T1O2, S1O2 and other similar compounds) and other similar additives.
- the present technology also generally relates to a battery comprising at least one electrochemical cell as defined herein.
- the battery is chosen from a lithium battery, a lithium-ion battery, a sodium battery and a sodium-ion battery.
- the battery is a lithium battery or a lithium-ion battery.
- Nao, 67Coo, 5oMno, 33Tio, i 7O2, Nao, 6Mn02, NaNio, 4Coo, 2Mno, 402 and NaNio, 3Feo, 33Mno, 3302 were prepared using solid state reaction techniques.
- the respective precursors Na2C03 and metal oxides such as Mh2q3, C02O3, NiO, Fe2O3 and T1O2 were weighed in order to obtain the desired stoichiometries.
- the samples were prepared by grinding and mixing the precursor powders. The ground and mixed powders of precursors were then placed in an oven and heated between 700 ° C and 1000 ° C under an atmosphere of air or oxygen for 5 to 24 hours.
- Example 2 Characterization of electrochemically active materials a) X-ray diffraction (DRX) on powders
- Example 3 Electrochemical properties All the cells were assembled in cases for button cell type 2032 with the components indicated in Table 1 and negative electrodes including a metallic lithium film on aluminum current collectors.
- the cells comprising liquid electrolytes were assembled with Celgard MC separators impregnated with a 1 M solution of LiPF6 in an EC / DEC mixture ([3: 7] by volume) or an EC / DMC mixture ([4: 6] in volume).
- the cells comprising solid polymer electrolytes were assembled with an SPE comprising LIFSI or LITFSI. Table 1. Cell configurations
- This example illustrates the electrochemical behavior of a Nao, 67CoO2 lamellar type P2 material as prepared in Example 1.
- Figure 3 shows the charge and discharge profiles of Cell 1. The charge and discharge were performed at 0.1 C, and recorded vs Li / Li + at a temperature of 25 ° C. Cell 1 provided a capacity of approximately 104 mAh / g.
- Figure 4 shows the charge and discharge profiles for Cell 1 at different cycling speeds. Charging and discharging were carried out at 0.1 C, 0.2 C, 0.5 C, 1 C, 2 C and 4 C and recorded vs Li / Li + at a temperature of 25 ° C. At cycling speed of 4C, Cell 1 provided a capacity of approximately 92 mAh / g, effectively showing a capacity retention of 87% with cycling speeds increasing from 0.5C to 4C.
- Figure 5 shows a graph representing the capacity (mAh / g) as a function of the number of cycles of Cell 1.
- the long cycling experiment was carried out at a constant charge / discharge current of 1 C.
- the results were recorded vs Li / Li + at a temperature of 25 ° C.
- Figure 5 shows a capacity retention of approximately 97% after 200 cycles.
- Figure 6 shows the charge and discharge profiles of Cell 2. The charge and discharge were carried out at 0.3C between 2.0 and 4.4 V vs Li / Li + at a temperature of 50 ° C. Cell 2 provided a capacity of approximately 107 mAh / g.
- Figure 7 shows the charge and discharge profiles of Cell 2.
- the charge and discharge were carried out at 0.3C between 2.0 and 4.4 V vs Li / Li + at a temperature of 80 ° C.
- Cell 2 provided a capacity of approximately 107 mAh / g.
- This example illustrates the electrochemical behavior of a Nao, 67Coo, 67Mno, 3302 lamellar type P2 material as prepared in Example 1.
- Figure 8 shows the charge and discharge profiles of Cell 3.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Cell 3 provided a capacity of approximately 150 mAh / g.
- Figure 9 shows the charging and discharging profiles of Cell 3 at different cycling speeds.
- the charges and discharges were carried out at 0.1 ° C., 0.2 ° C., 0.5 ° C., 1 ° C., 2 ° C. and 4 ° C. and recorded vs Li / Li + at a temperature of 25 ° C.
- Cell 3 provided a capacity of approximately 121 mAh / g, effectively showing 80% capacity retention with cycling speeds increasing from 0.1 C to 4C.
- Figure 10 shows a graph representing the capacity (mAh / g) as a function of the number of cycles for Cell 3. The long cycling experiment was carried out at a constant charge / discharge current of 2C.
- This example illustrates the electrochemical behavior of a Nao, 67Nio, 33Mno, 6702 lamellar type P2 material as prepared in Example 1.
- Figure 11 shows the initial charge and discharge curves for Cell 4.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° vs.
- Cell 4 provided a capacity of approximately 182 mAh / g.
- Figure 12 shows two charge and discharge profiles for Cell 5, i.e. the first cycle and the fifth cycle. Charging and discharging were carried out at 0.3C between 2.0 and 4.0 V vs Li / Li + at a temperature of 80 ° C. Cell 5 provided a capacity of approximately 120 mAh / g. d) Electrochemical behavior of Nao, 67Coo, eMno, 402 of type P2
- This example illustrates the electrochemical behavior of a Nao, 67Coo, 6Mno, 402 lamellar type P2 material as prepared in Example 1.
- Figure 13 shows the charge and discharge profiles of Cell 6.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Cell 6 provided a capacity of approximately 142 mAh / g. e) Electrochemical behavior of Nao, 67Coo, 5sMno, 4502 of type P2
- FIG. 14 shows the charge and discharge profiles of Cell 7. The charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Cell 7 provided a capacity of approximately 110 mAh / g. f)
- Electrochemical behavior of Nao, 67Coo, 5Mno, s02 of type P2 This example illustrates the electrochemical behavior of a Nao material, 67Coo, 5Mno, s02 lamellar of type P2 as prepared in Example 1.
- Figure 15 shows the charge and discharge profiles of Cell 8.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Cell 8 provided a capacity of approximately 114 mAh / g. g) Electrochemical behavior of Nao, 67Coo, 5oMno, 33Tio, i702 of type P2
- This example illustrates the electrochemical behavior of a Nao, 67Coo, 5oMno, 33Tio, i702 lamellar type P2 material as prepared in Example 1.
- Figure 16 shows the charge and discharge profiles of Cell 9.
- the charge and discharge were carried out at 0.1 C between 2.0 and 4.5 V vs Li / Li + at a temperature of 25 ° C .
- Cell 9 provided a capacity of approximately 137 mAh / g. h)
- This example illustrates the electrochemical behavior of a Nao, 6oMn02 lamellar type P2 material as prepared in Example 1.
- Figure 17 shows the charge and discharge profiles of Cell 10. The charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Cell 10 provided a capacity of approximately 73 mAh / g. i) Electrochemical behavior of NaNio, 4Coo, 2Mno, 402 type 03
- FIG. 11 This example illustrates the electrochemical behavior of a NaNio, 4Coo, 2Mno, 402 lamellar material of type 03 as prepared in Example 1.
- Figure 18 shows the charge and discharge profiles of Cell 11. The charge and discharge were carried out at 0.1 C between 2.0 and 4.4 V vs Li / Li + at a temperature of 25 ° C .
- Cell 11 provided a capacity of approximately 118 mAh / g.
- Figure 19 shows a graph representing the capacity (mAh / g) as a function of the number of cycles for Cell 11.
- the long cycling experiment was carried out at a constant charge / discharge current of 0.1 C.
- the results were recorded vs Li / Li + at a temperature of 25 ° C.
- Figure 19 shows good capacity retention after 50 cycles.
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EP19868747.7A EP3861579A4 (fr) | 2018-10-02 | 2019-10-02 | Matériaux d'électrode comprenant un oxyde lamellaire de sodium et de métal, électrodes les comprenant et leur utilisation en électrochimie |
JP2021517953A JP2022503995A (ja) | 2018-10-02 | 2019-10-02 | 層状ナトリウム金属酸化物を含む電極材料、それらを含む電極および電気化学におけるそれらの使用 |
US17/276,558 US20220052330A1 (en) | 2018-10-02 | 2019-10-02 | Electrode materials comprising a layered sodium metal oxide, electrodes comprising them and their use in electrochemistry |
KR1020217013309A KR20210062701A (ko) | 2018-10-02 | 2019-10-02 | 층상 나트륨 금속 산화물을 포함하는 전극 재료, 이를 포함하는 전극 및 전기화학에서 이의 용도 |
CA3112163A CA3112163A1 (fr) | 2018-10-02 | 2019-10-02 | Materiaux d'electrode comprenant un oxyde lamellaire de sodium et de metal, electrodes les comprenant et leur utilisation en electrochimie |
CN201980061284.6A CN112913052A (zh) | 2018-10-02 | 2019-10-02 | 包含层状钠和金属的氧化物的电极材料,包含其的电极及其在电化学中的用途 |
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WO2022169737A1 (fr) * | 2021-02-02 | 2022-08-11 | The University Of Chicago | Oxydes de métaux de transition à quatre périodes de sodium et de lithium mélangés destinés à une extraction électrochimique du lithium |
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CN114715953A (zh) * | 2022-03-14 | 2022-07-08 | 中国科学技术大学 | 一种前驱体辅助制备Cu,Zn掺杂的层状氧化物钠离子电池正极材料的方法及其应用 |
CN114725346B (zh) * | 2022-03-31 | 2023-04-07 | 钠远新材科技(无锡)有限公司 | 钠离子电池正极材料及其制备方法和钠离子电池 |
CN114927681B (zh) * | 2022-05-16 | 2024-03-12 | 华侨大学 | 一种p2型五元高熵钠层状正极材料及其制备方法和应用 |
CN115207341B (zh) * | 2022-08-10 | 2023-08-22 | 湘潭大学 | 一种高熵氧化物钠离子电池正极材料的制备方法 |
CN118588883A (zh) * | 2023-03-02 | 2024-09-03 | 中国科学院物理研究所 | 提高钠离子层状氧化物空气稳定性的方法、材料及应用 |
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JP2022503995A (ja) | 2022-01-12 |
CA3112163A1 (fr) | 2020-04-09 |
KR20210062701A (ko) | 2021-05-31 |
EP3861579A1 (fr) | 2021-08-11 |
EP3861579A4 (fr) | 2022-07-06 |
US20220052330A1 (en) | 2022-02-17 |
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