WO2022005242A1 - 이차전지 전극용 슬러리 조성물 및 이를 이용한 이차전지 전극 - Google Patents
이차전지 전극용 슬러리 조성물 및 이를 이용한 이차전지 전극 Download PDFInfo
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- WO2022005242A1 WO2022005242A1 PCT/KR2021/008406 KR2021008406W WO2022005242A1 WO 2022005242 A1 WO2022005242 A1 WO 2022005242A1 KR 2021008406 W KR2021008406 W KR 2021008406W WO 2022005242 A1 WO2022005242 A1 WO 2022005242A1
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- Prior art keywords
- secondary battery
- slurry composition
- carbon material
- battery electrode
- carbon
- Prior art date
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- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 2
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- QDDVNKWVBSLTMB-UHFFFAOYSA-N [Cu]=O.[Li] Chemical compound [Cu]=O.[Li] QDDVNKWVBSLTMB-UHFFFAOYSA-N 0.000 description 1
- RLTFLELMPUMVEH-UHFFFAOYSA-N [Li+].[O--].[O--].[O--].[V+5] Chemical compound [Li+].[O--].[O--].[O--].[V+5] RLTFLELMPUMVEH-UHFFFAOYSA-N 0.000 description 1
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- 239000006183 anode active material Substances 0.000 description 1
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- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- 229910000686 lithium vanadium oxide Inorganic materials 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- VROAXDSNYPAOBJ-UHFFFAOYSA-N lithium;oxido(oxo)nickel Chemical compound [Li+].[O-][Ni]=O VROAXDSNYPAOBJ-UHFFFAOYSA-N 0.000 description 1
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 1
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
-
- 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
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- 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
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a slurry composition for a secondary battery electrode and a secondary battery electrode manufactured using the same, and more particularly, to a slurry composition for a secondary battery electrode with improved dispersibility of the carbon-based conductive material by controlling the average size and content of the carbon-based conductive material. is about
- the conductive material is included in both the positive electrode and the negative electrode and is a material used to easily transfer electrons between the active material and the active material or the active material and the current collector, and is mainly developed around carbon-based materials.
- the linear dispersion slurry is a solution in which such a conductive material is dispersed in a solvent, and will become a material constituting a slurry for an electrode together with an active material and a binder in the future.
- the importance of these batteries is growing as secondary batteries have recently entered the market for medium- and large-sized batteries such as electric vehicles and ESS.
- Carbon nanotubes have a nano-sized diameter and a cylindrical shape, carbon atoms are arranged in a spiral shape, and have an sp 2 bond structure. Based on this structure, carbon nanotubes (CNTs) have attracted attention as a material with excellent physical properties such as electrical properties, strength, stability, and thermal conductivity, and are spotlighted as a new material in various fields.
- CNT carbon nanotubes
- CNTs carbon nanotubes
- CNTs have low solubility and dispersibility.
- CNTs carbon nanotubes
- the necessity and importance of a technology for dispersing carbon nanotubes (CNTs) is increasing, in particular, minimizing damage to carbon nanotubes (CNTs).
- a distributed method is required.
- an object of the present invention is to improve the solubility and dispersibility of the carbon-based conductive material by controlling the average size and content of the carbon-based conductive material including a linear carbon material such as carbon nanotubes (CNT),
- An object of the present invention is to provide a linear dispersion slurry composition for secondary battery electrodes having excellent electrical properties.
- the present invention in one embodiment,
- a conductive material including a linear carbon material and a point-shaped carbon material; dispersant; And a slurry composition for a secondary battery electrode comprising an organic solvent,
- It provides a slurry composition for a secondary battery electrode, characterized in that when the particle size distribution of the conductive material in the slurry composition is measured, a first peak and a second peak are displayed.
- the first peak has a peak maximum value in a particle size range of 0.01 ⁇ m or more and less than 1.0 ⁇ m; and the second peak may have a maximum peak value in a particle size range of 1.0 ⁇ m or more and 20.0 ⁇ m or less.
- the conductive material may include a bundle-type linear carbon material and a high-structure point-type carbon material (HSCB).
- HSCB high-structure point-type carbon material
- the linear carbon material may further include a semi-bundled linear carbon material, and a low-structure point carbon material ((LSCB) and a medium-structure point carbon material (MSCB) are included between the semi-bundle linear carbon material. It may include a network structure that
- the conductive material may satisfy two or more of the following [Conditions 1 to 4] when measuring the particle size distribution in the slurry composition:
- the linear carbon material included in the conductive material may have an average length of 250 ⁇ m or less and an average diameter of 40 nm or less.
- the dotted carbon material included in the conductive material may have an average size of 5 nm to 100 nm.
- the average BET specific surface area of the conductive material may be 100 to 500 m 2 /g.
- the linear carbon material may have an average BET specific surface area of 50 to 500 m 2 /g.
- the dotted carbon material may have an average BET specific surface area of 50 to 1,600 m 2 /g.
- the content ratio of the linear carbon material and the point-shaped carbon material may be 55 to 95 wt%: 5 to 45 wt%.
- the dispersant may include a rubber-based dispersant including a repeating unit derived from an acrylonitrile-based monomer and an olefin-based monomer.
- the rubber-based dispersant may include any one or more of compounds including repeating units represented by the following Chemical Formulas 1 and 2:
- the slurry composition for a secondary battery electrode according to the present invention includes a conductive material including a linear carbon material and a dotted carbon material, a dispersant, and an organic solvent, and the average size and content of the conductive material is adjusted to have two peaks in a specific range By doing so, solubility and dispersibility of the carbon-based conductive material are improved, and electrical properties are remarkably improved.
- 1 is an image showing the types according to the structure of the carbon-based conductive material.
- FIG. 2 is a particle size distribution graph in which a particle size distribution of a conductive material is measured for a slurry composition for a secondary battery electrode according to the present invention.
- the term comprise, comprises, comprising is meant to include the stated object, step or group of objects, and steps, and any other object. It is not used in the sense of excluding a step or a group of objects or groups of steps.
- the present invention provides a slurry composition for a secondary battery electrode comprising a conductive material, a dispersant and an organic solvent.
- the slurry composition for a secondary battery electrode according to the present invention includes a conductive material, a dispersing agent, and an organic solvent, wherein the conductive material supplements the conductivity of the active material in the electrode of the secondary battery and forms a path for electrons to move.
- a carbon-based conductive material having excellent electrical conductivity is included.
- the carbon-based conductive material include linear carbon materials such as carbon nanotube (CNT), carbon nanofiber, and carbon nanorod; and carbon black, ethylene black, acetylene black, Ketjen black, channel black, furnace black, lamp black, summer black, natural graphite, and at least one selected from the group consisting of point carbon materials such as artificial graphite. have.
- the carbon-based conductive material may satisfy a certain size range.
- the linear carbon material may have an average length of 250 ⁇ m or less and an average diameter of 40 nm or less; Preferably, the average length is 200 ⁇ m or less, and the average diameter may be 5 to 20 nm.
- the dotted carbon material may have an average size of 5 nm to 1,000 nm; Preferably, it may be 20 nm to 80 nm. In this case, the average size of the point-shaped carbon material may mean an average diameter.
- the linear carbon material was measured using a Scanning Electron Microscope (SEM) and a High Resolution Transmission Electron Microscope (HR-TEM).
- SEM Scanning Electron Microscope
- HR-TEM High Resolution Transmission Electron Microscope
- the point-shaped carbon material can be measured by preparing a dispersion using a particle size analyzer (Particle Size Analyzer) of Malvern's Model 2000.
- the average length of the linear carbon material is 250 ⁇ m or more, there is a problem in that the dispersibility of the slurry composition is lowered, and when the average size of the point-shaped carbon material is 5 nm or less, electrical properties are reduced, and when it is 1,000 nm or more, the dispersibility is lowered There are limits.
- the point-to-point type carbon material connects short distances in a point-to-point form
- the linear carbon material can connect carbon materials spaced apart by a longer distance than the point-type carbon material. Since it is easy to form a structure, it is preferable to include the linear carbon material in a high content.
- the carbon-based conductive material the linear carbon material and the point-shaped carbon material may be used in combination.
- the linear carbon material as shown in FIG. 1 may be a bundle type, and the point type carbon material may include a high-structure type (HSCB).
- the linear carbon material may further include a semi-bundled linear carbon material, and the semi-bundled linear carbon material may be a linear carbon material in which individual linear carbon materials and 2-3 individual linear carbon materials are bundled. , between the semi-bundled linear carbon materials; It may include a network structure containing a low-structure dotted carbon material ((LSCB) and a medium-structured dotted carbon material (MSCB).
- LSCB low-structure dotted carbon material
- MSCB medium-structured dotted carbon material
- the conductive material including the linear carbon material and the dotted carbon material is 100% by weight
- the ratio of the linear carbon material and the dotted carbon material is 55 -95 wt%: 5-45 wt%.
- the content of the linear carbon material may be greater than the content of the point-shaped carbon material.
- the present invention can prevent the viscosity of the slurry composition from increasing outside the range of the content ratio of the linear carbon material and the point-shaped carbon material, or from lowering the dispersibility and electrical properties.
- the particle size range of 0.001 to 50.0 ⁇ m in the particle size distribution graph A first peak and a second peak may be shown in The particle size distribution of the conductive material with respect to the slurry composition can be measured using a particle size analyzer (Malvern's Model 2000). More specifically, the first peak and the second peak may be represented within a particle size range of 0.001 to 30.0 ⁇ m.
- the first peak has a particle size range of 0.01 ⁇ m or more and less than 1.0 ⁇ m, specifically 0.01 ⁇ m or more and 0.5 ⁇ m or less; Alternatively, it may have a peak maximum value in a particle size range of 0.01 ⁇ m or more and 0.2 ⁇ m or less.
- the second peak has a particle size range of 1.0 ⁇ m or more and 20.0 ⁇ m or less, specifically 2.0 ⁇ m or more and 10.0 ⁇ m or less; Alternatively, it may have a peak maximum value in a particle size range of 4.0 ⁇ m or more and 7.0 ⁇ m or less.
- the particle size distribution graph shows one peak having a maximum value in the median particle size value of each carbon-based conductive material included in the slurry composition
- the slurry composition according to the present invention shows two peaks including a first peak and a second peak, and the two peak values identified at this time are not the average particle size value of the two carbon-based conductive materials, but the peak maximum in the intrinsic particle size range. can have a value. That is, among the two peak values, the first peak may mean indicating the degree of dispersion of the point-shaped conductive material, and the second peak may mean indicating the degree of dispersion of the linear conductive material.
- the first peak and the second peak appear at the same position, and the size of the peak may vary according to the content of the carbon-based conductive material. For example, as the content of the dotted conductive material increases, the size of the first peak may increase.
- the carbon-based conductive material not only exhibits the first and second peaks as described above in the particle size distribution graph when measuring the particle size distribution of the conductive material for the slurry composition, but also satisfies two or more of the following [Conditions 1 to 4] can:
- the D10, the D50, and the D90 are 10% of the maximum value in the cumulative particle size distribution when the particle size distribution of the slurry composition including the linear carbon material and the point-shaped carbon material is measured. , 50% and 90%, and the Dmax is a maximum value in the cumulative particle size distribution and may mean a particle size distribution limit value for the linear carbon material, and as this value increases, the carbon-based conductive material is Dispersibility may be reduced.
- the carbon-based conductive material has a D10 of 0.1 ⁇ m or less; the D50 is greater than 0.1 ⁇ m and less than or equal to 3 ⁇ m; the D90 is greater than 3 ⁇ m and less than or equal to 10 ⁇ m; and [Conditions 1 to 4] in which the Dmax value is greater than 10 ⁇ m and less than or equal to 50 ⁇ m, thereby further improving the dispersibility of the linear carbon material and the point-shaped carbon material.
- the carbon-based conductive material has a D10 of 0.01 to 0.03 ⁇ m; D50 is 0.5-2.5 ⁇ m; D90 is 4 to 9 ⁇ m; and Dmax of 12 to 16 ⁇ m, any two or more of [Conditions 1 to 4], specifically, all of [Conditions 1 to 4] may be satisfied.
- the dispersibility of the carbon-based conductive material in the slurry composition can be further improved by having the particle size distribution and the particle size distribution graph of the conductive material described above.
- the electrical properties of the electrode for a secondary battery manufactured by using the composition can be further improved.
- the conductive material may have an average BET specific surface area of 100 to 500 m 2 /g at 23° C., preferably 250 to 350 m 2 /g.
- the average BET specific surface area of the conductive material present in the dried slurry composition is adjusted to the above range to facilitate electron movement of the prepared electrode even if the conductive material is included in a small amount in the slurry composition. can do.
- the average BET specific surface area is an average value of the BET specific surface area of the conductive material including the linear carbon material and the point-like carbon material.
- the BET specific surface area is less than 100 m 2 /g a decrease in electrical properties that occur when; When it exceeds 500 m 2 /g, it is possible to prevent problems of increasing the viscosity and lowering the dispersibility of the slurry composition.
- the linear carbon material may have an average BET specific surface area of 50 to 500 m 2 /g
- the dotted carbon material may have an average BET specific surface area of 50 to 1,600 m 2 /g
- the linear carbon material may have an average BET specific surface area of 150 to 400 m 2 /g or 250 to 350 m 2 /g
- the point-like carbon material may have an average BET specific surface area of 600 to 1500 m 2 /g.
- the conductive material may include a linear carbon material having an average BET specific surface area of 280 to 320 m 2 /g; and a point-like carbon material having an average BET specific surface area of 790 to 810 m 2 /g or 1350 to 1450 m 2 /g.
- the particle size of the carbon material increases and the initial dispersibility can be reduced, and when it exceeds the above range, the viscosity of the slurry composition is increased due to re-agglomeration of the conductive material. there is a problem.
- the slurry composition according to the present invention may exhibit a viscosity of 100 to 2,000 cps under a shear rate of 23° C. and 50 S ⁇ 1 when measuring the viscosity using a rheometer, preferably 100 to 1,500 cps. can indicate
- the viscosity of the slurry composition under a shear rate of 50 S -1 is less than 100 cps, the dispersibility of the carbon-based conductive material is lowered, so that it is difficult to form a coating layer during electrode formation.
- the viscosity exceeds 2,000 cps, the slurry composition The viscosity of is too high, so there is a limitation in that workability is deteriorated during manufacturing.
- the dispersant used in the slurry composition for secondary battery electrodes according to the present invention may include a rubber-based dispersant including a repeating unit derived from an acrylonitrile-based monomer and an olefin-based monomer.
- the rubber-based dispersant includes an acrylonitrile-based monomer such as acrylonitrile or methacrylonitrile; such as 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, 1,4-pentadiene, 1,4-hexadiene, ethylene, propylene, 1-butene It may include a repeating unit obtained by copolymerizing an olefinic monomer.
- the rubber-based dispersant may include any one or more of compounds including repeating units represented by the following Chemical Formulas 1 and 2:
- the rubber-based dispersant includes a hydrogenated nitrile butadiene rubber dispersant (Hydrogenated Nitrile Butadiene Rubber: HNBR) having a repeating unit represented by Formula 1, or a hydrogenated nitrile butadiene rubber having a repeating unit of Formula 1 It may have a configuration including a mixture of a dispersing agent and a nitrile butadiene rubber dispersing agent having a repeating unit of Formula 2;
- HNBR Hydrogenated Nitrile Butadiene Rubber
- the rubber-based dispersant serves as a stabilizer when dispersing the carbon-based conductive material in the slurry composition, and at the same time may serve as a binder in the battery during electrode manufacturing.
- the average molecular weight of the rubber-based dispersant may be 50,000 to 200,000 g/mol, preferably 50,000 to 180,000 g/mol.
- the content of the rubber-based dispersant may be 0.1 wt% to 10 wt% based on the total weight of the composition, preferably 0.5 wt% to 3 wt% based on the total weight of the composition.
- the present invention can maximize the effect of uniformly dispersing the carbon-based conductive material without loss of viscosity stability and electrical properties of the slurry composition by adjusting the content of the rubber-based dispersant within the above range. Specifically, when the content of the rubber-based dispersant is less than 1% by weight, the viscosity of the slurry composition increases and the dispersibility of the carbon-based conductive material decreases, and when it exceeds 10% by weight, viscosity stability and a slurry composition are used. There is a limit in that the electrical properties of the cured product manufactured by doing so are deteriorated.
- the organic solvent used in the slurry composition for secondary battery electrodes according to the present invention is selected from the group consisting of N-methylpyrrolidone (NMP), dimethyl sulfoxide (DMSO), isopropyl alcohol (IPA), acetone and water. It may include one or more, preferably N-methylpyrrolidone (NMP).
- the present invention provides an electrode for a secondary battery prepared using the above-described slurry composition for an electrode for a secondary battery.
- the electrode for a secondary battery according to the present invention is prepared by mixing an electrode active material with the slurry composition for a secondary battery electrode of the present invention including a carbon-based conductive material, a rubber-based dispersing agent and an organic solvent, and applying it on at least one surface of the electrode current collector, followed by drying and It can be prepared by rolling.
- the electrode for a secondary battery may be a positive electrode for a secondary battery, and in this case, the electrode active material may use a lithium transition metal oxide typically used as a positive electrode active material.
- the electrode current collector of the electrode is not particularly limited as long as it has conductivity without causing chemical change in the battery, for example, stainless steel, aluminum, nickel, titanium, calcined carbon, or carbon on the surface of aluminum or stainless steel. , nickel, titanium, silver, etc. may be used.
- the current collector may typically have a thickness of 3 to 500 ⁇ m, and may have fine irregularities on the surface to increase the adhesion of the positive electrode active material.
- the current collector may be used in various forms, such as a film, a sheet, a foil, a net, a porous body, a foam body, a nonwoven body, and the like.
- the present invention provides a secondary battery including a positive electrode manufactured using the above-described slurry composition for secondary battery electrodes and a positive electrode active material.
- the secondary battery according to the present invention has excellent rapid charge/discharge characteristics and battery life characteristics, including the above-described secondary battery electrode, specifically, a positive electrode manufactured using the slurry composition for secondary battery electrodes of the present invention and a positive electrode active material. .
- the secondary battery includes a positive electrode, a negative electrode positioned to face the positive electrode, and a separator interposed between the positive electrode and the negative electrode, and the positive electrode is as described above.
- the secondary battery may optionally further include a battery container for accommodating the electrode assembly of the positive electrode, the negative electrode, the separator, and a sealing member for sealing the battery container.
- the negative electrode may include a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector.
- the anode active material a compound capable of reversible intercalation and deintercalation of lithium may be used.
- the negative electrode active material carbonaceous materials such as artificial graphite, natural graphite, graphitized carbon fiber, amorphous carbon; metal compounds capable of alloying with lithium, such as Si, Al, Sn, Pb, Zn, Bi, In, Mg, Ga, Cd, Si alloy, Sn alloy, or Al alloy; metal oxides capable of doping and dedoping lithium, such as SiO ⁇ (0 ⁇ ⁇ ⁇ 2), SnO 2 , vanadium oxide, and lithium vanadium oxide;
- a composite including the metallic compound and a carbonaceous material such as a Si-C composite or a Sn-C composite may be used, and any one or a mixture of two or more thereof may be used.
- a metal lithium thin film may be used as the negative electrode active material.
- both low crystalline carbon and high crystalline carbon may be used.
- low crystalline carbon soft carbon and hard carbon are representative, and as high crystalline carbon, amorphous, plate-like, flaky, spherical or fibrous natural or artificial graphite, Kish graphite (Kish) graphite), pyrolytic carbon, mesophase pitch based carbon fiber, meso-carbon microbeads, liquid crystal pitches (Mesophase pitches), and petroleum and coal tar pitch (petroleum or coal tar pitch) High-temperature calcined carbons such as derived cokes) are representative.
- the negative electrode current collector is not particularly limited as long as it has high conductivity without causing chemical change in the battery, and for example, copper, stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel. The surface treated with carbon, nickel, titanium, silver, etc., an aluminum-cadmium alloy, etc. may be used.
- the negative electrode current collector may have a thickness of typically 3 ⁇ m to 500 ⁇ m, and similarly to the positive electrode current collector, fine irregularities may be formed on the surface of the current collector to strengthen the bonding force of the negative electrode active material.
- it may be used in various forms, such as a film, a sheet, a foil, a net, a porous body, a foam, a nonwoven body.
- the separator separates the anode and the anode and provides a passage for lithium ions to move, and can be used without any particular limitation as long as it is used as a separator in a lithium secondary battery. It is preferable that it is excellent in electrolyte solution moisture content.
- a porous polymer film for example, a porous polymer film made of a polyolefin-based polymer such as ethylene homopolymer, propylene homopolymer, ethylene/butene copolymer, ethylene/hexene copolymer and ethylene/methacrylate copolymer, or these A laminated structure of two or more layers of may be used.
- a conventional porous nonwoven fabric for example, a nonwoven fabric made of high melting point glass fiber, polyethylene terephthalate fiber, or the like may be used.
- a coated separator including a ceramic component or a polymer material may be used, and may optionally be used in a single-layer or multi-layer structure.
- Example 1 Dispersion particle size ( ⁇ m) linear carbon material point carbon material dispersant menstruum first peak second peak D 10 D 50 D 90 D max
- Example 1 3 2 25 70 0.02 7.80 0.02 2.27 7.13 12.70
- Example 2 3 2 25 70 0.03 6.90 0.02 2.12 6.92 13.20
- Example 3 3.5 1.5 20 75 0.03 7.40 0.02 1.87 6.54 11.20
- Example 4 3.5 1.5 20 75 0.02 8.20 0.02 1.81 7.81 14.40
- Example 5 3 2 25 70 0.68 34.20 0.72 6.12 38.42 86.10
- Example 6 3 2 25 70 0.92 45.40 0.94 7.24 47.21 104.50
- Example 7 3 2 25 70 0.02 0.4 0.01 0.02 0.56 6.54
- Example 8 3 2 25 70 0.02 13.58 1.62 8.21 14.20 20.10
- Example 9 3 2 25 70 0.3 18.12 1.92 9.86 19.24 30.40
- Example 10 3 2 25 70 0.9 24.28 2.49 12.74 26.12 45.20
- Example 11
- Example 1 192 - - - Example 2 198 - - - Example 3 205 - - - Example 4 208 - - - Example 5 195 - - - Example 6 197 - - - Example 7 195 - - - Example 8 192 - - - Example 9 198 - - - Example 10 198 - - - Example 11 100 - - - Example 12 500 - - - Example 13 50 - - - Example 14 600 - - - Example 15 - 20 - 93 Example 16 - 50 - 93 Example 17 - 500 - 93 Example 18 - 600 - 93 Example 19 - - 85 93 Example 20 - 221 - 20 Example
- Examples 1 to 4, Examples 11 to 12, Examples 16 to 17, Examples 21 to 22, and Examples 24 to 27 are the first peak, the second peak, D10, D50, D90, Dmax and the case where the content ratio between the linear carbon material and the point-shaped carbon material is satisfied, Examples 5 to 10, Examples 13 to 15, Examples 18 to 20, Examples 23 and 28 to 29 denotes a case where the range of the first peak, the second peak, D10, D50, D90, Dmax, and the range of the content ratio between the linear carbon material and the point-shaped carbon material is not satisfied.
- Comparative Examples 1 and 3 are the linear carbon material or This is a case in which only one type of the point-like carbon material is included, and Comparative Examples 2 and 4 includes the linear carbon material and two types of the point-like carbon material, but neither the first peak nor the second peak appears.
- Table 3 below shows the viscosity of the slurry composition was measured at 50s -1 using a Haake Viscometer (Plate ⁇ 35mm) at 23°C, and the slurry composition was coated on a PET film by using a bar coater to 7 to 8 ⁇ m. The PET film was dried for 5 minutes at 120° C. to prepare a measurement specimen Each measurement specimen was measured for sheet resistance with Mitsubishi Chemical Corporation, Loresta-AX, and MCP-T700 using a 4-point probe method. did
- the secondary battery according to the present invention stably exhibits excellent discharge capacity, output characteristics, and capacity retention rate, including the positive electrode prepared using the above-described slurry composition, and thus, portable devices such as mobile phones, notebook computers, digital cameras, and hybrid batteries. It is useful in the field of electric vehicles, such as a hybrid electric vehicle (HEV).
- HEV hybrid electric vehicle
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Abstract
Description
구분 | 슬러리 조성물 (wt%) | 분산 입경 (㎛) | ||||||||
선형 탄소재 | 점형 탄소재 | 분산제 | 용매 | 제1 피크 |
제2 피크 |
D10 | D50 | D90 | Dmax | |
실시예 1 | 3 | 2 | 25 | 70 | 0.02 | 7.80 | 0.02 | 2.27 | 7.13 | 12.70 |
실시예 2 | 3 | 2 | 25 | 70 | 0.03 | 6.90 | 0.02 | 2.12 | 6.92 | 13.20 |
실시예 3 | 3.5 | 1.5 | 20 | 75 | 0.03 | 7.40 | 0.02 | 1.87 | 6.54 | 11.20 |
실시예 4 | 3.5 | 1.5 | 20 | 75 | 0.02 | 8.20 | 0.02 | 1.81 | 7.81 | 14.40 |
실시예 5 | 3 | 2 | 25 | 70 | 0.68 | 34.20 | 0.72 | 6.12 | 38.42 | 86.10 |
실시예 6 | 3 | 2 | 25 | 70 | 0.92 | 45.40 | 0.94 | 7.24 | 47.21 | 104.50 |
실시예 7 | 3 | 2 | 25 | 70 | 0.02 | 0.4 | 0.01 | 0.02 | 0.56 | 6.54 |
실시예 8 | 3 | 2 | 25 | 70 | 0.02 | 13.58 | 1.62 | 8.21 | 14.20 | 20.10 |
실시예 9 | 3 | 2 | 25 | 70 | 0.3 | 18.12 | 1.92 | 9.86 | 19.24 | 30.40 |
실시예 10 | 3 | 2 | 25 | 70 | 0.9 | 24.28 | 2.49 | 12.74 | 26.12 | 45.20 |
실시예 11 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 12 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 13 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 14 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 15 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 16 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 17 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 18 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 19 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 20 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 21 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 22 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 23 | 3 | 2 | 25 | 70 | - | - | - | - | - | - |
실시예 24 | 2.34 | 1.92 | 20 | 75.74 | - | - | - | - | - | - |
실시예 25 | 3 | 1.28 | 20 | 75.72 | - | - | - | - | - | - |
실시예 26 | 3.64 | 0.64 | 20 | 75.72 | - | - | - | - | - | - |
실시예 27 | 4.06 | 0.2 | 20 | 75.74 | - | - | - | - | - | - |
실시예 28 | 1.72 | 2.58 | 20 | 75.7 | - | - | - | - | - | - |
실시예 29 | 4.2 | 0.08 | 20 | 75.72 | - | - | - | - | - | - |
비교예 1 | 5 | 0 | 25 | 70 | - | 28.52 | 7.87 | 18.50 | 36.40 | 58.80 |
비교예 2 | 3 | 2 | 25 | 70 | 0.00 | 54.00 | 6.53 | 34.20 | 65.40 | 98.10 |
비교예 3 | 0 | 5 | 20 | 75 | 0.02 | - | 0.17 | 0.05 | 0.59 | 5.90 |
비교예 4 | 3.5 | 1.5 | 20 | 75 | 0.00 | 62.00 | 7.53 | 24.70 | 78.20 | 94.80 |
구분 | 선형 탄소재, 점형 탄소재 혼합 BET 비표면적 (㎡/g) |
선형 탄소재 BET 비표면적 (㎡/g) |
인탱글형 선형 탄소재 BET 비표면적 (㎡/g) |
점형 탄소재 BET 비표면적 (㎡/g) |
실시예 1 | 192 | - | - | - |
실시예 2 | 198 | - | - | - |
실시예 3 | 205 | - | - | - |
실시예 4 | 208 | - | - | - |
실시예 5 | 195 | - | - | - |
실시예 6 | 197 | - | - | - |
실시예 7 | 195 | - | - | - |
실시예 8 | 192 | - | - | - |
실시예 9 | 198 | - | - | - |
실시예 10 | 198 | - | - | - |
실시예 11 | 100 | - | - | - |
실시예 12 | 500 | - | - | - |
실시예 13 | 50 | - | - | - |
실시예 14 | 600 | - | - | - |
실시예 15 | - | 20 | - | 93 |
실시예 16 | - | 50 | - | 93 |
실시예 17 | - | 500 | - | 93 |
실시예 18 | - | 600 | - | 93 |
실시예 19 | - | - | 85 | 93 |
실시예 20 | - | 221 | - | 20 |
실시예 21 | - | 221 | - | 50 |
실시예 22 | - | 221 | - | 1600 |
실시예 23 | - | 221 | - | 1800 |
실시예 24 | 184 | 218 | - | 93 |
실시예 25 | 196 | 228 | - | 98 |
실시예 26 | 212 | 224 | - | 92 |
실시예 27 | 228 | 232 | - | 97 |
실시예 28 | 171 | 212 | - | 93 |
실시예 29 | 225 | 234 | - | 92 |
비교예 1 | - | 232 | - | - |
비교예 2 | 198 | - | - | - |
비교예 3 | - | - | - | 95 |
비교예 4 | 208 | - | - | - |
구분 | 점도(cP, 23℃) | 면저항(Ω/sq) |
실시예 1 | 680 | 82 |
실시예 2 | 652 | 86 |
실시예 3 | 942 | 75 |
실시예 4 | 983 | 73 |
실시예 5 | 1862 | 102 |
실시예 6 | 1982 | 108 |
실시예 7 | 612 | 104 |
실시예 8 | 1552 | 92 |
실시예 9 | 1641 | 93 |
실시예 10 | 1605 | 91 |
실시예 11 | 521 | 89 |
실시예 12 | 1428 | 68 |
실시예 13 | 221 | 108 |
실시예 14 | 1987 | 64 |
실시예 15 | 142 | 109 |
실시예 16 | 189 | 89 |
실시예 17 | 1345 | 78 |
실시예 18 | 1524 | 74 |
실시예 19 | 202 | 109 |
실시예 20 | 632 | 91 |
실시예 21 | 662 | 82 |
실시예 22 | 812 | 84 |
실시예 23 | 1654 | 82 |
실시예 24 | 821 | 59 |
실시예 25 | 998 | 50 |
실시예 26 | 1256 | 43 |
실시예 27 | 1466 | 38 |
실시예 28 | 653 | 101 |
실시예 29 | 1624 | 33 |
비교예 1 | 3647 | 128 |
비교예 2 | 4254 | 132 |
비교예 3 | 68 | 코팅불가 |
비교예 4 | 3825 | 138 |
Claims (18)
- 선형 탄소재 및 점형 탄소재를 포함하는 도전재; 분산제; 및 유기 용매를 포함하는 이차전지 전극용 슬러리 조성물로서,상기 슬러리 조성물 내 상기 도전재에 대한 입도 분포 측정 시 제1 피크 및 제2 피크를 나타내는 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 제1 피크는 0.01 ㎛ 이상 1.0 ㎛ 미만 입도 범위에서 피크 최대값을 갖고;상기 제2 피크는 1.0 ㎛ 이상 20.0 ㎛ 이하 입도 범위에서 피크 최대값을 갖는 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 선형 탄소재는 번들형 타입이고; 및상기 점형 탄소재는 고-구조 타입을 포함하는 이차전지 전극용 슬러리 조성물.
- 제3항에 있어서,상기 선형 탄소재는 세미-번들 선형 탄소재를 더 포함하고,상기 세미-번들 선형 탄소재 사이에 저-구조의 점형 탄소재(LSCB) 및 중-구조의 점형 탄소재(MSCB)를 함유하는 네트워크 구조를 포함하는 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 슬러리 조성물 내 도전재에 대한 입도 분포 측정 시, 하기 조건 1 내지 4 중 2 이상의 조건을 만족하는 이차전지 전극용 슬러리 조성물:[조건 1] D10 ≤ 0.1 ㎛[조건 2] 0.1㎛ < D50 ≤ 3㎛[조건 3] 3㎛ < D90 ≤10㎛[조건 4] 10㎛ < Dmax ≤ 50㎛.
- 제1항에 있어서,상기 선형 탄소재는 평균 길이가 250 ㎛ 이하이고, 평균 직경이 40 nm 이하인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 도전재의 평균 BET 비표면적은 100 내지 500 ㎡/g인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 선형 탄소재는 평균 BET 비표면적이 50 내지 500 ㎡/g인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 점형 탄소재는 평균 BET 비표면적이 50 내지 1,600 ㎡/g인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 선형 탄소재와 상기 점형 탄소재의 함량 비율은 55~95 중량% : 5~45 중량%인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,상기 점형 탄소재는 평균 크기가 5 nm 내지 100 nm인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,분산제는 아크릴로니트릴계 단량체 및 올레핀계 단량체로부터 유래되는 반복단위를 포함하는 고무계 분산제를 포함하는 이차전지 전극용 슬러리 조성물.
- 제12항에 있어서,상기 고무계 분산제는 평균 분자량이 50,000 내지 200,000 g/mol인 것을 특징으로 하는 이차전지 전극용 슬러리 조성물.
- 제12항에 있어서,상기 고무계 분산제의 함량은 전체 조성물의 중량에 대하여 0.1 중량% 내지 10 중량%인 이차전지 전극용 슬러리 조성물.
- 제1항에 있어서,유기 용매는 N-메틸피롤리돈(NMP), 디메틸설폭사이드(DMSO), 이소프로필 알코올(IPA), 아세톤 및 물로 이루어진 군으로부터 선택되는 1종 이상인 이차전지 전극용 슬러리 조성물.
- 제1항에 따른 이차전지 전극용 슬러리 조성물을 이용하여 제조된 이차전지용 전극.
- 양극활물질과 제1항에 따른 이차전지 전극용 슬러리를 이용하여 제조되는 양극, 음극 및 분리막을 포함하는 이차전지.
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CA3224420A CA3224420A1 (en) | 2020-07-02 | 2021-07-02 | Slurry composition for secondary battery electrode, and secondary battery electrode using same |
EP21834500.7A EP4177990A1 (en) | 2020-07-02 | 2021-07-02 | Slurry composition for secondary battery electrode, and secondary battery electrode using same |
CN202180045861.XA CN115868044A (zh) | 2020-07-02 | 2021-07-02 | 二次电池电极用浆料组合物以及利用其的二次电池电极 |
US18/089,138 US20230137520A1 (en) | 2020-07-02 | 2022-12-27 | Slurry composition for secondary battery electrode and secondary battery electrode using same |
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CN115241459A (zh) * | 2022-08-17 | 2022-10-25 | 厦门凯纳石墨烯技术股份有限公司 | 一种用于离子电池的正极极片及离子电池 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160025020A (ko) * | 2013-07-08 | 2016-03-07 | 산요가세이고교 가부시키가이샤 | 수지 집전체용 분산제, 수지 집전체용 재료 및 수지 집전체 |
KR101785064B1 (ko) * | 2016-08-18 | 2017-10-12 | 한국과학기술연구원 | 이차전지 음극 활물질용 다공성 탄소-실리콘 복합 미소구체, 이의 제조방법 및 이를 구비한 이차전지 |
KR20180075180A (ko) * | 2016-12-26 | 2018-07-04 | 주식회사 엘지화학 | 이차전지용 전극, 그 제조방법 및 이를 포함하는 리튬 이차전지 |
KR20190096649A (ko) * | 2018-02-09 | 2019-08-20 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지 |
WO2020122602A1 (ko) * | 2018-12-11 | 2020-06-18 | 주식회사 엘지화학 | 리튬 이차전지용 음극 및 이를 포함하는 리튬 이차전지 |
-
2021
- 2021-07-01 KR KR1020210086752A patent/KR20220003985A/ko unknown
- 2021-07-02 EP EP21834500.7A patent/EP4177990A1/en active Pending
- 2021-07-02 WO PCT/KR2021/008406 patent/WO2022005242A1/ko active Application Filing
- 2021-07-02 CN CN202180045861.XA patent/CN115868044A/zh active Pending
- 2021-07-02 CA CA3224420A patent/CA3224420A1/en active Pending
-
2022
- 2022-12-27 US US18/089,138 patent/US20230137520A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160025020A (ko) * | 2013-07-08 | 2016-03-07 | 산요가세이고교 가부시키가이샤 | 수지 집전체용 분산제, 수지 집전체용 재료 및 수지 집전체 |
KR101785064B1 (ko) * | 2016-08-18 | 2017-10-12 | 한국과학기술연구원 | 이차전지 음극 활물질용 다공성 탄소-실리콘 복합 미소구체, 이의 제조방법 및 이를 구비한 이차전지 |
KR20180075180A (ko) * | 2016-12-26 | 2018-07-04 | 주식회사 엘지화학 | 이차전지용 전극, 그 제조방법 및 이를 포함하는 리튬 이차전지 |
KR20190096649A (ko) * | 2018-02-09 | 2019-08-20 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지 |
WO2020122602A1 (ko) * | 2018-12-11 | 2020-06-18 | 주식회사 엘지화학 | 리튬 이차전지용 음극 및 이를 포함하는 리튬 이차전지 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115241459A (zh) * | 2022-08-17 | 2022-10-25 | 厦门凯纳石墨烯技术股份有限公司 | 一种用于离子电池的正极极片及离子电池 |
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US20230137520A1 (en) | 2023-05-04 |
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