WO2014042266A1 - アセチレンブラック分散スラリー及びリチウムイオン二次電池 - Google Patents
アセチレンブラック分散スラリー及びリチウムイオン二次電池 Download PDFInfo
- Publication number
- WO2014042266A1 WO2014042266A1 PCT/JP2013/074953 JP2013074953W WO2014042266A1 WO 2014042266 A1 WO2014042266 A1 WO 2014042266A1 JP 2013074953 W JP2013074953 W JP 2013074953W WO 2014042266 A1 WO2014042266 A1 WO 2014042266A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slurry
- acetylene black
- dispersion
- mass
- producing
- Prior art date
Links
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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- 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
- 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
Definitions
- the present invention relates to a carbon material-dispersed slurry, and more particularly to a non-aqueous carbon material slurry for an electrode slurry for a lithium ion secondary battery positive electrode plate and a lithium ion secondary battery using the same.
- lithium ion secondary batteries With the popularization of mobile phones, notebook computers, etc., lithium ion secondary batteries are attracting attention and demand is increasing.
- positive and negative electrodes are formed by applying a paint mixed with an electrode active material, a binder, and a conductive material on a strip-shaped metal foil in order to increase the efficiency of the battery reaction by increasing the electrode area. After being used and wound together with the separator, they are housed in a battery can (Patent Document 1, etc.). *
- the positive electrode uses a lithium transition metal composite oxide or the like as an electrode active material. Since such an electrode active material alone has poor electronic conductivity, that is, conductivity, conductive carbon black having a highly developed structure for imparting conductivity, or carbon such as graphite in which crystals have significant anisotropy.
- a material is added as a conductive material and dispersed in a non-aqueous solvent such as N-methyl-2-pyrrolidone together with a binder (binder) to produce a slurry (Patent Document 2), and this slurry is applied onto a metal foil. Dry to form a positive electrode.
- a non-aqueous solvent such as N-methyl-2-pyrrolidone
- binder binder
- Carbon black or graphite which is a carbon material used as a conductive material, is a fine powder having a small primary particle size, and is a material that is highly agglomerated and very difficult to uniformly disperse.
- the electrode active material is also a powder, and if the carbon materials are not agglomerated when they are mixed, there is a part in the positive electrode plate that is locally inferior in conductivity, and electrons are not sufficiently transferred. From this, it was pointed out that the electrode active material was not effectively used, resulting in a low discharge capacity (Patent Document 1 and the like). *
- Patent Document 1 a method of coating the surface of the electrode active material with a carbon material (Patent Document 1), or carbon black as a carbon material is previously dispersed in a dispersion medium such as an organic solvent together with a dispersant to form a slurry.
- a method for preparing a uniform electrode slurry by kneading together with a substance and a binder to form an electrode Patent Document 5, Patent Document 6, Patent Document 7, Patent Document 8, Patent Document 9, Patent Document 10, and Patent Document 11, Patent Document 12 has been proposed. *
- a plurality of layers constituting an electrode of a lithium ion secondary battery that is, an electrode layer containing an electrode active material, a primer layer
- the viscosity of each coating solution for forming the polymer electrolyte layer is 1 ⁇ 10 ⁇ 3 to 5 ⁇ 10 2 Pa ⁇ s when the shear rate of 2 ⁇ 10 2 s ⁇ 1 is applied
- the difference in viscosity between paints between adjacent layers is within 1 ⁇ 10 2 Pa ⁇ s in the comparison of the dynamic viscosity at the shear rate (Patent Document 4).
- the boundary surface adhesion / adhesiveness of the plurality of layers influences variations in battery performance related to internal impedance and charge / discharge of the battery, and the battery performance is improved by adjusting to the above dynamic viscosity.
- JP 2003-308845 A Japanese Patent Laid-Open No. 2003-157846 Japanese Patent Laid-Open No. 11-144714 JP 11-185733 A JP 2011-70908 JP JP 2011-113821 Japanese Patent No. 4235788 JP 2010-238575 A JP 2011-192020 gazette JP 2007-335175 A Japanese Patent Laid-Open No. 2004-281096 JP 2009-252683 A
- the present invention has been made in view of such problems of the prior art, and the object of the present invention is to provide a carbon material-dispersed slurry that can exhibit excellent battery performance, and suitable conditions for the carbon material-dispersing step.
- An object of the present invention is to provide a method for producing a carbon material-dispersed slurry for a lithium ion secondary battery that can be judged numerically and can improve the performance of the obtained battery.
- the present inventor has focused on the alternating current impedance method and measured the alternating current impedance of the carbon material slurry.
- the admittance value was set within a predetermined range, the obtained lithium
- the inventors have found that the performance of the ion secondary battery is improved, and have completed the present invention.
- the present invention is (1) a slurry containing at least acetylene black and a dispersion medium, wherein the acetylene black content in the slurry is 10 mass% or more and 30 mass% or less, and the viscosity measured with a B-type viscometer is An acetylene black dispersion slurry characterized by being 100 mPa ⁇ s or more and 5000 mPa ⁇ s or less, (2) a slurry containing at least acetylene black and a dispersion medium, wherein the acetylene black content in the slurry is 10% by mass or more 30% by mass or less and a shear rate at which the viscosity becomes a minimum value is 100 to 1000 s ⁇ 1 , (3) a slurry containing at least acetylene black and a dispersion medium, The acetylene black content in the slurry is 10 mass% or more and 30 mass% or less, the applied frequency 1000Hz obtained by AC
- Containing slurry (8) containing acetylene black of (6) or (7) above, wherein the nonionic polymer resin has a weight average molecular weight of 1,000 to 1,000,000 (9)
- the acetylene black-containing slurry according to (8) above, wherein the nonionic polymer resin has a weight average molecular weight of 5,000 to 300,000, and (10) the acetylene black-containing slurry according to any one of (1) to (9) above Is mixed with at least an electrode active material and a binder, applied to an electrode substrate, and dried, a method for producing a positive electrode of a lithium ion secondary battery,
- the slurry containing at least acetylene black and a dispersion medium according to (12) above The dispersion process is performed until the concentration dependency of admittance at an applied frequency of 1000 Hz obtained by alternating current impedance measurement is 1.0 ⁇ S / mass% or less and the phase difference is 5 degrees or more and 20 degrees or less.
- a method for producing a slurry containing at least acetylene black and a dispersion medium (16) A lithium ion secondary battery, characterized in that the slurry obtained by the method for producing a slurry according to any one of (12) to (15) is mixed with at least an electrode active material and a binder, applied to an electrode substrate, and dried. And (17) a lithium ion secondary battery comprising a positive electrode of a lithium ion secondary battery obtained by the production method of (16) above.
- the carbon material that is a conductive material is previously dispersed in the dispersion medium, and at that time, the admittance value can be set within a predetermined range, and the like, thereby suitable conditions for the dispersion step of the carbon material.
- the admittance value can be set within a predetermined range, and the like, thereby suitable conditions for the dispersion step of the carbon material.
- FIG. 1 is a diagram showing the relationship between the change in carbon concentration in the slurry and the change in phase difference.
- FIG. 2 is a graph showing the relationship between the change in carbon concentration in the slurry and the equivalent admittance.
- FIG. 3 is a diagram showing dimensions of an aluminum foil flag type electrode.
- FIG. 4 is a diagram showing a phase difference and admittance measurement cell.
- acetylene black is used as the carbon material. Since acetylene black has a highly developed crystallite and structure and is excellent in conductivity, it is suitable as a conductive material for lithium ion batteries, and is a slurry having predetermined physical properties of the present invention described below.
- the concentration in the slurry can be increased, and the amount of solvent such as N-methyl-2-pyrrolidone in the electrode slurry to be applied to the electrode substrate can be reduced, so that the drying process can be simplified, and at the time of transportation It is preferable because it can be expected to reduce the cost by reducing the transportation amount.
- the slurry of the present invention may contain a dispersibility imparting agent.
- the dispersibility-imparting agent is a substance having a function of easily dispersing acetylene black in the dispersion medium, and a substance conventionally known as a so-called dispersant can be used.
- a resin system, a cationic surfactant, and a nonionic surfactant having a thickening action and / or a surface active action may be mentioned.
- a nonionic polymer resin is suitable so as not to inhibit the movement of lithium ions in the lithium ion secondary battery.
- the nonionic polymer resin has a hydrophilic portion where the hydrophilic portion is not ionized, and a cellulose polymer or a butyral polymer is representative.
- a weight average molecular weight of the nonionic polymer resin exceeds 1,000,000, the viscosity of the carbon material-dispersed slurry becomes too high and the handling property is deteriorated.
- the weight average molecular weight is less than 1,000, the dispersibility is poor, and it becomes difficult to produce a carbon material-dispersed slurry. More preferred is a weight average molecular weight of 5,000 to 300,000.
- the slurry of the present invention is obtained using acetylene black.
- the slurry refers to a slurry in which acetylene black is dispersed in a liquid dispersion medium.
- N-methyl-2-pyrrolidone is preferred as the dispersion medium.
- the content of the dispersion medium is less than 60% by mass of the slurry, the fluidity is poor and the handling property is lowered. At least 60% by mass or more, preferably 70% by mass or more is preferable.
- the acetylene black content in the slurry is 10% by mass to 30% by mass, preferably 15% by mass to 25% by mass. If the acetylene black content is less than 10% by mass, the amount of solvent in the slurry increases, so that the drying process in the coating process takes time. In addition, when the acetylene black content exceeds 30% by mass, it is difficult to disperse the acetylene black.
- the acetylene black dispersion slurry of the present invention contains acetylene black in a specific concentration range as described above. Furthermore, the physical properties of viscosity, shear rate at which viscosity becomes a minimum value, concentration dependency of admittance, and phase difference are within a specific range, but these reflect the dispersion state of acetylene black in the slurry, It was found by the present inventors that they are correlated with each other. And it turned out that the acetylene black dispersion
- the first form is an acetylene black dispersion slurry having a concentration and a viscosity within a specific range.
- the second form is an acetylene black dispersion slurry in which the shear rate at which the concentration and viscosity are minimized is within a specific range.
- a third form is an acetylene black dispersion slurry in which the concentration, concentration dependency of admittance, and phase difference are within a specific range.
- the slurry of the present invention has a viscosity measured by a B-type viscometer of 100 mPa ⁇ s to 5000 mPa ⁇ s, preferably 100 mPa ⁇ s to 3000 mPa ⁇ s. It was found that the battery performance is excellent by adjusting the dispersion state so that the viscosity is in this concentration range and in this range. In addition, when the viscosity is lower than this range, there is a problem that the application work becomes difficult because the viscosity of the electrode paste applied to the electrode plate becomes too low. *
- a carbon material dispersion slurry for a lithium ion secondary battery is preferably a dilatancy fluid that maintains a state in which the carbon material is connected to the dispersion liquid to some extent in order to control conductivity. It was.
- the present inventors have inferred that it is necessary to disperse the maximum particle size to 20 ⁇ m or less, while maintaining the connection of the carbon material.
- the inventors have intensively studied the rheological properties of the slurry, and as a result, have found that a slurry having a shear rate within a range of 100 to 1000 s ⁇ 1 , which has a minimum viscosity, has excellent electrical properties.
- the dispersed particle diameter of acetylene black in the slurry is preferably 20 ⁇ m or less.
- the average particle diameter is often used for the management of the particle state of a dispersion such as a carbon material.
- the average particle size is used, the state of coarse particles is not shown, and even when the average particle size is small, if there are coarse particles of 20 ⁇ m or more, the thickness between the separators of the lithium ion battery is 20 ⁇ m. Therefore, there is a possibility of short-circuiting inside the lithium ion secondary battery through the separator. Therefore, a carbon material slurry having a maximum particle size of 20 ⁇ m or less is preferable.
- the maximum particle size is specified with a grind gauge. In order to maintain the maximum particle size at a particle size of 20 ⁇ m or less, it is extremely preferable to use the above-described nonionic polymer resin as a dispersibility-imparting agent. *
- the acetylene black dispersion slurry of the present invention has an admittance concentration dependency of 1.0 ⁇ S / mass% or less, preferably 0.9 ⁇ S / mass% or less.
- the carbon material dispersed slurry should have a small admittance change with respect to the change in the carbon material concentration in order to exhibit uniform conductivity in the positive electrode plate of the lithium ion secondary battery. It is done. According to the study by the present inventors, it was found that uniform conductivity can be exhibited when the concentration dependency is 1.0 ⁇ S / mass% or less, particularly preferably 0.9 ⁇ S / mass% or less.
- the slurry of the present invention has a phase difference of 5 degrees or more obtained by AC impedance measurement. Particularly preferably, the angle is 5 degrees or more and 20 degrees or less. Within this range, the particle state of the conductive material when it is made into a battery is in a state suitable for a lithium ion battery.
- the phase difference indicates the capacitance of the carbon material, but is assumed to reflect the particle state in the dispersion. If the dispersion is performed excessively, the carbon material in the liquid exists in a very fine state, so that the phase difference becomes very small, that is, the capacitance becomes very small and the suitability as a material of a lithium ion battery is lowered. I think that.
- a carbon material slurry for a battery can be prepared as a battery material by controlling the phase difference within the above range. Conversely, if the phase difference is too large, it is considered that the dispersion is not sufficient.
- Patent Document 5 and Patent Document 7 describing a slurry using a carbon material such as acetylene black, a nonionic polymer resin, and N-methyl-2-pyrrolidone as a dispersion medium
- a carbon material such as acetylene black, a nonionic polymer resin, and N-methyl-2-pyrrolidone
- the physical properties are not sufficiently controlled only by following the conditions described herein, the battery performance cannot be predicted, and the battery performance cannot be understood unless it is assembled into a lithium ion battery.
- by measuring various physical properties in the state of the dispersion defined in the present invention it is possible to predict the battery performance and control the dispersion state.
- the dispersion can be performed within the above-mentioned concentration range so as to be within the shear rate range where the minimum value of the above-mentioned viscosity is obtained, whereby the viscosity can be set within the above-mentioned range.
- the concentration dependency and phase difference of admittance can be in the above-mentioned range. And, since the concentration dependency and phase difference of admittance are in the above-mentioned range, it is considered that the electrical characteristics when battery-made are excellent.
- the acetylene black dispersion slurry of the present invention has the acetylene black content, the viscosity measured with a B-type viscometer, the shear rate at which the viscosity becomes a minimum value, the concentration dependency of the admittance, and the phase difference within the above-mentioned ranges. If there is, the manufacturing method is not limited, but the following method is preferable.
- acetylene black is dispersed in a dispersion medium. At this time, the aforementioned dispersibility-imparting agent is added.
- other components that do not inhibit the function may be added, at least before adding the electrode active material and the binder, it is dispersed in a state having the predetermined physical properties defined in the present invention by the following method. . *
- a nonionic polymer resin as a dispersibility-imparting agent is dissolved in N-methyl-2-pyrrolidone as a dispersion medium.
- the acetylene black is mixed with the solution, and then the acetylene black aggregated by a dispersing device such as a bead mill is dispersed while being crushed, and the dispersion is continued until a shear rate at which a minimum value of a predetermined viscosity is reached.
- an acetylene black-containing slurry having a predetermined dispersion particle size, viscosity, admittance concentration dependency at an applied frequency of 1000 Hz obtained by AC impedance measurement, and a phase difference at a predetermined concentration can be obtained.
- the time to reach these physical properties depends on the amount charged and the equipment, so to manage these physical properties, mix and disperse the materials in the above equipment, take out a certain amount and measure each of the above physical properties. However, it is sufficient to determine the time to enter the predetermined range and continue dispersion until the next time, but there is a correlation as described above between each physical property, so it is not necessary to measure all physical property values It is good.
- the dispersion apparatus is preferably an apparatus capable of dispersing the maximum particle size to 20 ⁇ m or less, but is not particularly limited to a bead mill, and examples thereof include a ball mill and a jet mill.
- a bead mill examples thereof include a ball mill and a jet mill.
- the viscosity measured with a B-type viscometer, the concentration dependence of admittance and the phase difference obtained by AC impedance measurement are measured, and these physical properties can be directly used as an index for obtaining a desired dispersion state. good. *
- acetylene black dispersion slurry of the present invention mixed with an electrode active material, a binder and the like to form an electrode slurry for application to an electrode substrate, to obtain a lithium ion secondary battery Can do.
- various conventionally known methods can be employed.
- the acetylene black dispersion slurry of the present invention is mixed with an electrode active material and a binder to form a slurry, which is applied to an electrode substrate and dried to form an electrode.
- the lithium ion secondary battery of the present invention thus obtained can improve the discharge capacity maintenance rate during repeated charging and discharging.
- Slurry 1 The obtained acetylene black dispersion slurry is referred to as “Slurry 1”.
- Slurry 1 has a maximum particle size of 17.5 ⁇ m, a viscosity of 150 mPa ⁇ s, a maximum particle size of 20 ⁇ m or less, a viscosity of 100 mPa ⁇ s or more, and an admittance concentration dependency of 1.0 ⁇ S / mass% at an applied frequency of 1000 Hz. Below, the phase difference is in the range of 5 degrees or more.
- Example 1 was used except that butyral was used as a dispersibility-imparting agent in place of methylcellulose and the dispersion was continued until the shear rate at which the minimum viscosity was 110 s ⁇ 1. The same operation is performed, and the obtained acetylene black dispersion slurry is referred to as “slurry 3”.
- the maximum particle size of the slurry 3 was 17.5 ⁇ m, and the viscosity was 900 mPa ⁇ s.
- acetylene Black Dispersion Slurry 6 1% by mass of a methylcellulose polymer as a dispersibility imparting agent was dissolved in 85.5% by mass of N-methyl-2-pyrrolidone. 13.5% by mass of acetylene black “FX-35” (manufactured by Denki Kagaku Kogyo Co., Ltd.) was mixed into the resulting solution, and the aggregated acetylene black was dispersed while being crushed using a bead mill. Similarly, the sample was taken out and the shear rate at which the minimum viscosity was measured was measured, and dispersion was continued until there was no shear rate at which the minimum viscosity was present, as in Comparative Example 1. The obtained acetylene black dispersion slurry is referred to as “slurry 6”. The maximum particle size of slurry 6 was 20.0 ⁇ m and the viscosity was 450 ⁇ mPa ⁇ s.
- Table 1 shows the physical properties of Slurries 1-9.
- the evaluation methods of these physical properties are as follows. [Measurement of viscosity] Viscosity was measured using a B-type viscometer according to JIS K7117-1. [Measurement of shear rate at which viscosity becomes minimum] Rheometer: MARSIII (manufactured by Thermo Fisher Scientific), sensor: DC60 / 2 was used for measurement. [Measurement of maximum particle size] The maximum particle size was measured using a grind gauge in accordance with JIS K5600-2-5: 1999. *
- the distance between the aluminum foil flag electrodes was 10 mm. Further, a hole was made in a Teflon (registered trademark) cap 2 (# 10, upper diameter 32 mm, lower diameter 28 mm, height 41 mm, manufactured by SK Corporation), and the measurement electrode 5 was passed through and fixed. The slurry was weighed into a tall beaker 6 (IWAKI GLASS CODE 7740, manufactured by Sansho Co., Ltd.), and a bipolar cell was assembled so that the electrode portion of Al
- N-methyl-2-pyrrolidone is measured by the impedance method, and the cell constant is calculated by the above calculation method to obtain the cell constant.
- the conditions of the aluminum foil flag type electrode were such that the electrode area was 7 mm ⁇ 7 mm and the distance between the electrodes was 10 mm. *
- Table 3 shows the result of the phase difference ⁇ [°] obtained by the AC impedance measurement. Moreover, what made them a graph is shown in FIG. The horizontal axis represents the solid content [%] of the acetylene black of the entire slurry, and the vertical axis represents the phase difference [°].
- Table 4 shows the results of admittance [ ⁇ S] obtained by AC impedance measurement. A graph of these is shown in FIG. The horizontal axis represents the solid content [%] of the acetylene black of the entire slurry, and the vertical axis represents the admittance [ ⁇ S]. As the acetylene black concentration decreased, the admittance tended to decrease gradually. *
- the acetylene black dispersion slurries of Examples 1 and 2 had a small dependence of admittance on the carbon material concentration. From the above, in the method for producing a carbon material slurry that can be used for a lithium ion secondary battery, the carbon material concentration dependency of admittance at an applied frequency of 1000 Hz in the obtained carbon material slurry is 1.0 ⁇ S / mass% or less, and By defining the dispersion process by setting the phase difference to 5 degrees or more, the performance of the obtained battery can be improved. For example, when applied to a lithium ion secondary battery, it is possible to improve the discharge capacity maintenance rate during repeated discharge.
- a lithium ion secondary battery with improved battery performance a carbon material-dispersed slurry suitable for the production thereof, a production method thereof, and a quality control method.
Abstract
Description
イオン二次電池内でのリチウムイオンの移動を阻害しないようにノニオン系高分子樹脂が適している。ノニオン系高分子樹脂とは、親水部がイオン化しない親水性部分を持つもので、セルロース系ポリマーやブチラール系ポリマーが代表的である。また、ノニオン系高分子樹脂は重量平均分子量が1,000,000を超えると炭素材料分散スラリーの粘度が高くなりすぎ、ハンドリング性が悪くなる。一方、重量平均分子量が1,000を下回ると分散性が乏しく、炭素材料分散スラリーの製造が困難となる。さらに好ましいのは重量平均分子量が5,000~300,000である。
まで分散を継続した以外は、実施例1と同様の操作を行い、得られたアセチレンブラック分散スラリーを「スラリー2」とする。スラリー2の最大粒子径は12.5 μm、粘度が110 mPa・sであった。
Claims (17)
- 少なくともアセチレンブラック及び分散媒を含有するスラリーであって、スラリー中のアセチレンブラック含有量が10質量%以上30質量%以下、かつB形粘度計で測定する粘度が100 mPa・s以上5000mPa・s以下であることを特徴とするアセチレンブラック分散スラリー。
- 少なくともアセチレンブラック及び分散媒を含有するスラリーであって、スラリー中のアセチレンブラック含有量が10質量%以上30質量%以下、かつ粘度の極小値となるせん断速度が100~1000 s-1であることを特徴とするアセチレンブラック分散スラリー。
- 少なくともアセチレンブラック及び分散媒を含有するスラリーであって、スラリー中のアセチレンブラック含有量が10質量%以上30質量%以下、交流インピーダンス測定により得られる印加周波数1000Hzにおけるアドミッタンスの濃度依存性が1.0 μS/質量%以下、かつ位相差が5度から20度の範囲であることを特徴とするアセチレンブラック含有スラリー。
- 分散媒としてN-メチル-2-ピロリドンを含有する、請求項1~3のいずれかに記載のアセチレンブラック含有スラリー。
- 分散性付与剤を含有する、請求項1~4のいずれかに記載のアセチレンブラック含有スラリー。
- 分散性付与剤がノニオン系高分子樹脂である、請求項5に記載のアセチレンブラック含有スラリー。
- ノニオン系高分子樹脂がセルロース系ポリマーまたはブチラール系ポリマーである請求項6に記載のアセチレンブラック含有スラリー。
- ノニオン系高分子樹脂の重量平均分子量が1,000~1,000,000である、請求項6又は7に記載のアセチレンブラック含有スラリー。
- ノニオン系高分子樹脂の重量平均分子量が5,000~300,000である、請求項8に記載のアセチレンブラック含有スラリー。
- 請求項1~9のいずれかに記載のアセチレンブラック含有スラリーを、少なくとも電極活物質及びバインダーと混合し、電極基板に塗布、乾燥することを特徴とするリチウムイオン二次電池の正極の製造方法。
- 請求項10記載の製造方法により得られたリチウムイオン二次電池の正極を有することを特徴とするリチウムイオン二次電池。
- 少なくともアセチレンブラック及び分散媒を含有し、かつアセチレンブラック含有量が10質量%以上30質量%以下であるスラリーの製造方法であって、以下の(i)~(iii)のいずれかを管理することを特徴するアセチレンブラック分散スラリーの製造方法。(i)粘度の極小値となるせん断速度(ii)B形粘度計で測定する粘度(iii)アドミッタンスの濃度依存性及び交流インピーダンス測定により得られた位相差
- 請求項12に記載された少なくともアセチレンブラック及び分散媒を含有するスラリーの製造方法であって、B形粘度計で測定する粘度が100 mPa・s以上5000mPa・s以下となるまで分散工程を行うことを特徴とする、少なくともアセチレン
ブラック及び分散媒を含有するスラリーの製造方法。 - 請求項12に記載された少なくともアセチレンブラック及び分散媒を含有するスラリーの製造方法であって、粘度の極小値となるせん断速度が100~1000 s-1、となるまで分散工程を行うことを特徴とする、少なくともアセチレンブラック及び分散媒を含有するスラリーの製造方法。
- 請求項12に記載された少なくともアセチレンブラック及び分散媒を含有するスラリーの製造方法であって、交流インピーダンス測定により得られた印加周波数1000Hzにおけるアドミッタンスの濃度依存性が1.0 μS/質量%以下、かつ位相差が5度以上20度以下となるまで分散工程を行うことを特徴とする、少なくともアセチレンブラック及び分散媒を含有するスラリーの製造方法。
- 請求項12~15のいずれかに記載のスラリーの製造方法により得られたスラリーを、少なくとも電極活物質及びバインダーと混合し、電極基板に塗布、乾燥することを特徴とするリチウムイオン二次電池の正極の製造方法。
- 請求項16記載の製造方法により得られたリチウムイオン二次電池の正極を有することを特徴とするリチウムイオン二次電池。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/428,094 US20150311533A1 (en) | 2012-09-14 | 2013-09-13 | Slurry containing dispersed acetylene black, and lithium-ion secondary battery |
KR1020157007521A KR102188630B1 (ko) | 2012-09-14 | 2013-09-13 | 아세틸렌블랙 분산 슬러리 및 리튬 이온 이차 전지 |
CN201380047462.2A CN104718649B (zh) | 2012-09-14 | 2013-09-13 | 乙炔黑分散浆料及锂离子二次电池 |
KR1020207023421A KR102357030B1 (ko) | 2012-09-14 | 2013-09-13 | 아세틸렌블랙 분산 슬러리 및 리튬 이온 이차 전지 |
JP2014535617A JP6699984B2 (ja) | 2012-09-14 | 2013-09-13 | アセチレンブラック分散スラリー及びリチウムイオン二次電池 |
US16/363,577 US20190221850A1 (en) | 2012-09-14 | 2019-03-25 | Slurry containing dispersed acetylene black, and lithium-ion secondary battery |
US18/203,427 US20240030449A1 (en) | 2012-09-14 | 2023-05-30 | Acetylene black-dispersed slurry and lithium ion secondary battery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-202429 | 2012-09-14 | ||
JP2012202429 | 2012-09-14 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/428,094 A-371-Of-International US20150311533A1 (en) | 2012-09-14 | 2013-09-13 | Slurry containing dispersed acetylene black, and lithium-ion secondary battery |
US16/363,577 Division US20190221850A1 (en) | 2012-09-14 | 2019-03-25 | Slurry containing dispersed acetylene black, and lithium-ion secondary battery |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014042266A1 true WO2014042266A1 (ja) | 2014-03-20 |
Family
ID=50278371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/074953 WO2014042266A1 (ja) | 2012-09-14 | 2013-09-13 | アセチレンブラック分散スラリー及びリチウムイオン二次電池 |
Country Status (5)
Country | Link |
---|---|
US (3) | US20150311533A1 (ja) |
JP (4) | JP6699984B2 (ja) |
KR (2) | KR102357030B1 (ja) |
CN (1) | CN104718649B (ja) |
WO (1) | WO2014042266A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014112439A1 (ja) * | 2013-01-17 | 2014-07-24 | 日本ゼオン株式会社 | 電気化学素子電極用導電性接着剤組成物の製造方法 |
JP2019151525A (ja) * | 2018-03-02 | 2019-09-12 | 御国色素株式会社 | 多孔質炭素粒子、多孔質炭素粒子分散体及びこれらの製造方法 |
JP2020021632A (ja) * | 2018-08-01 | 2020-02-06 | 東洋インキScホールディングス株式会社 | カーボンブラック分散組成物およびその利用 |
JP2020535593A (ja) * | 2017-09-19 | 2020-12-03 | エルジー・ケム・リミテッド | リチウム二次電池用電極の設計方法およびこれを含むリチウム二次電池用電極の製造方法 |
CN113008942A (zh) * | 2021-03-04 | 2021-06-22 | 上海恩捷新材料科技有限公司 | 涂布膜涂层浆料分散性的检测方法、系统 |
WO2022030636A1 (ja) * | 2020-08-07 | 2022-02-10 | リファインホールディングス株式会社 | 全固体リチウムイオン二次電池用炭素質材料分散体および全固体リチウムイオン二次電池用電極スラリー |
WO2023027191A1 (ja) | 2021-08-27 | 2023-03-02 | 御国色素株式会社 | 導電材複合粒子の提供方法 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6937761B2 (ja) * | 2016-08-24 | 2021-09-22 | デンカ株式会社 | 電池用カーボンブラック、電極用導電性組成物、電池用電極、および電池 |
JP6948813B2 (ja) * | 2017-03-29 | 2021-10-13 | Fdk株式会社 | 導電助剤、電池用電極材料、および電池用電極材料の製造方法 |
JPWO2018225670A1 (ja) * | 2017-06-05 | 2020-04-02 | 積水化学工業株式会社 | 炭素材料含有分散液、電極形成用スラリー、及び非水電解質二次電池用電極の製造方法 |
KR102026527B1 (ko) | 2017-08-08 | 2019-09-27 | 주식회사 엘지화학 | 전극 제조용 슬러리의 필터 막힘 평가방법 |
CN108287171A (zh) * | 2017-12-29 | 2018-07-17 | 江苏海基新能源股份有限公司 | 电池电极浆料分散均匀度的检测方法及应用 |
JP7169217B2 (ja) | 2019-02-08 | 2022-11-10 | 三洋電機株式会社 | 非水電解質二次電池の電極、非水電解質二次電池、及びそれらの製造方法 |
JP7437010B2 (ja) * | 2019-11-27 | 2024-02-22 | 御国色素株式会社 | リチウムイオン二次電池正極用の導電材分散液及び電極ペースト |
JP7466888B2 (ja) | 2019-11-27 | 2024-04-15 | 御国色素株式会社 | セルロース誘導体及びセルロース誘導体溶解液 |
KR20220045660A (ko) | 2020-10-06 | 2022-04-13 | 주식회사 엘지에너지솔루션 | 전극 슬러리의 제조방법 |
JP7289857B2 (ja) * | 2021-02-08 | 2023-06-12 | プライムプラネットエナジー&ソリューションズ株式会社 | 正極活物質混合物の製造方法および検査方法 |
WO2022179811A1 (de) * | 2021-02-26 | 2022-09-01 | Siemens Aktiengesellschaft | Computergestütztes verfahren zur analyse einer roh-suspension für eine elektrodenschicht, herstellungsverfahren eines batteriespeichers und herstellungseinheit |
EP4050680A1 (de) * | 2021-02-26 | 2022-08-31 | Siemens Aktiengesellschaft | Computergestütztes verfahren zur analyse einer roh-suspension für eine elektrodenschicht, herstellungsverfahren eines batteriespeichers und herstellungseinheit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010049874A (ja) * | 2008-08-20 | 2010-03-04 | Toyo Ink Mfg Co Ltd | 電池用組成物 |
JP2011070908A (ja) * | 2009-09-25 | 2011-04-07 | Mikuni Color Ltd | 導電材分散液、電極ペーストおよび導電材被覆活物質 |
JP2011162698A (ja) * | 2010-02-12 | 2011-08-25 | Toyo Ink Sc Holdings Co Ltd | 炭素材料分散液 |
JP2011192620A (ja) * | 2010-03-17 | 2011-09-29 | Toyo Ink Sc Holdings Co Ltd | リチウムイオン二次電池電極用カーボンブラック分散体の製造方法 |
JP2012099251A (ja) * | 2010-10-29 | 2012-05-24 | Nippon Zeon Co Ltd | リチウム二次電池用正極、導電剤組成物、リチウム二次電池正極用組成物、及びリチウム二次電池用正極の製造方法 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0622129B2 (ja) * | 1985-09-26 | 1994-03-23 | 新神戸電機株式会社 | 密閉形アルカリ蓄電池用陰極板の製造方法 |
JP3593776B2 (ja) * | 1996-02-02 | 2004-11-24 | 三菱化学株式会社 | リチウム2次電池用正極の製造方法及びリチウム2次電池 |
JPH11144714A (ja) | 1997-11-07 | 1999-05-28 | Toray Ind Inc | 電極用スラリーの製造方法 |
JPH11185733A (ja) | 1997-12-22 | 1999-07-09 | Mitsubishi Chemical Corp | リチウムポリマー二次電池の製造方法 |
JP2001176503A (ja) * | 1999-12-14 | 2001-06-29 | Honda Motor Co Ltd | 電極用活物質の混合方法 |
JP4235788B2 (ja) | 2001-11-19 | 2009-03-11 | 御国色素株式会社 | カーボンブラックスラリー及びリチウム二次電池用電極 |
JP2003308845A (ja) | 2002-04-17 | 2003-10-31 | Mikuni Color Ltd | リチウム二次電池用電極及びこれを用いたリチウム二次電池 |
JP4191456B2 (ja) * | 2002-11-19 | 2008-12-03 | 日立マクセル株式会社 | 非水二次電池用負極、非水二次電池、非水二次電池用負極の製造方法および非水二次電池を用いた電子機器 |
JP2004281096A (ja) | 2003-03-13 | 2004-10-07 | Hitachi Maxell Ltd | リチウム二次電池用正極、その製造方法および前記正極を用いたリチウム二次電池 |
KR100644063B1 (ko) * | 2003-06-03 | 2006-11-10 | 주식회사 엘지화학 | 분산제가 화학결합된 전극용 복합 바인더 중합체 |
WO2007116718A1 (ja) * | 2006-03-30 | 2007-10-18 | Zeon Corporation | 電気化学素子電極用複合粒子、電気化学素子電極用複合粒子の製造方法及び電気化学素子電極 |
JP2007335175A (ja) | 2006-06-14 | 2007-12-27 | Sony Corp | 非水電解質電池の電極合剤層用塗料組成物の製造方法、非水電解質電池用電極及び非水電解質電池 |
JP4377904B2 (ja) * | 2006-10-31 | 2009-12-02 | 株式会社東芝 | 電極の製造方法及び非水電解質電池の製造方法 |
JP4466673B2 (ja) * | 2007-03-29 | 2010-05-26 | Tdk株式会社 | リチウムイオン2次電池用正極の製造方法 |
JP2009252683A (ja) | 2008-04-10 | 2009-10-29 | Sumitomo Chemical Co Ltd | 非水電解質二次電池用正極体の製造方法 |
JP2009277432A (ja) * | 2008-05-13 | 2009-11-26 | Denso Corp | 二次電池用電極及びその製造方法並びに二次電池 |
JP4835881B2 (ja) | 2009-03-31 | 2011-12-14 | 宇部興産株式会社 | リチウムイオン電池用電極およびその製造方法 |
KR101046098B1 (ko) * | 2009-07-17 | 2011-07-01 | 삼성전기주식회사 | 커패시터용 분극성 전극 및 이를 포함하는 전기 이중층 커패시터 |
EP2481111B1 (en) * | 2009-09-23 | 2014-05-07 | Umicore | New silicon based electrode formulations for lithium-ion batteries and method for obtaining it |
JP5484016B2 (ja) | 2009-11-27 | 2014-05-07 | 御国色素株式会社 | 電極合材スラリーの乾燥方法 |
JP2011176503A (ja) * | 2010-02-23 | 2011-09-08 | Panasonic Corp | 画像符号化装置、方法、プログラムおよび集積回路 |
JP5533057B2 (ja) * | 2010-03-11 | 2014-06-25 | 東洋インキScホールディングス株式会社 | カーボンブラック分散液 |
JP2011192020A (ja) | 2010-03-15 | 2011-09-29 | Ricoh Co Ltd | 画像形成制御装置、画像形成装置、画像形成システム、画像形成制御方法及びプログラム |
US20110240203A1 (en) * | 2010-04-01 | 2011-10-06 | Korea Institute Of Science & Technology | Method for producing a membrane-electrode assembly for a fuel cell |
JP2011249293A (ja) * | 2010-05-25 | 2011-12-08 | Si Sciense Co Ltd | リチウム遷移金属化合物及びその製造方法、並びにリチウムイオン電池 |
US20110303881A1 (en) * | 2010-06-11 | 2011-12-15 | Samsung Electro-Mechanics Co., Ltd. | Carboxy methyl cellulose and slurry composition with the same |
JP2012178327A (ja) * | 2010-08-26 | 2012-09-13 | Sanyo Electric Co Ltd | 非水電解質二次電池用電極、非水電解質二次電池及び非水電解質二次電池用電極の製造方法 |
WO2012059982A1 (ja) * | 2010-11-02 | 2012-05-10 | トヨタ自動車株式会社 | 塗工方法及び塗工装置 |
US20130280413A1 (en) * | 2011-01-13 | 2013-10-24 | Yozo Uchida | Electrode material applying apparatus and filtering apparatus |
-
2013
- 2013-09-13 US US14/428,094 patent/US20150311533A1/en not_active Abandoned
- 2013-09-13 JP JP2014535617A patent/JP6699984B2/ja active Active
- 2013-09-13 WO PCT/JP2013/074953 patent/WO2014042266A1/ja active Application Filing
- 2013-09-13 CN CN201380047462.2A patent/CN104718649B/zh active Active
- 2013-09-13 KR KR1020207023421A patent/KR102357030B1/ko active IP Right Grant
- 2013-09-13 KR KR1020157007521A patent/KR102188630B1/ko active IP Right Grant
-
2018
- 2018-03-12 JP JP2018043868A patent/JP2018129305A/ja active Pending
- 2018-09-26 JP JP2018181069A patent/JP6707603B2/ja active Active
-
2019
- 2019-03-25 US US16/363,577 patent/US20190221850A1/en not_active Abandoned
- 2019-12-26 JP JP2019236286A patent/JP6942317B2/ja active Active
-
2023
- 2023-05-30 US US18/203,427 patent/US20240030449A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010049874A (ja) * | 2008-08-20 | 2010-03-04 | Toyo Ink Mfg Co Ltd | 電池用組成物 |
JP2011070908A (ja) * | 2009-09-25 | 2011-04-07 | Mikuni Color Ltd | 導電材分散液、電極ペーストおよび導電材被覆活物質 |
JP2011162698A (ja) * | 2010-02-12 | 2011-08-25 | Toyo Ink Sc Holdings Co Ltd | 炭素材料分散液 |
JP2011192620A (ja) * | 2010-03-17 | 2011-09-29 | Toyo Ink Sc Holdings Co Ltd | リチウムイオン二次電池電極用カーボンブラック分散体の製造方法 |
JP2012099251A (ja) * | 2010-10-29 | 2012-05-24 | Nippon Zeon Co Ltd | リチウム二次電池用正極、導電剤組成物、リチウム二次電池正極用組成物、及びリチウム二次電池用正極の製造方法 |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014112439A1 (ja) * | 2013-01-17 | 2014-07-24 | 日本ゼオン株式会社 | 電気化学素子電極用導電性接着剤組成物の製造方法 |
JP2020535593A (ja) * | 2017-09-19 | 2020-12-03 | エルジー・ケム・リミテッド | リチウム二次電池用電極の設計方法およびこれを含むリチウム二次電池用電極の製造方法 |
US11710817B2 (en) | 2017-09-19 | 2023-07-25 | Lg Energy Solution, Ltd. | Method for designing electrode for lithium secondary battery and method for manufacturing electrode for lithium secondary battery comprising the same |
JP7283704B2 (ja) | 2018-03-02 | 2023-05-30 | 御国色素株式会社 | 多孔質炭素粒子、多孔質炭素粒子分散体及びこれらの製造方法 |
JP2021178772A (ja) * | 2018-03-02 | 2021-11-18 | 御国色素株式会社 | 多孔質炭素粒子、多孔質炭素粒子分散体及びこれらの製造方法 |
JP7301294B2 (ja) | 2018-03-02 | 2023-07-03 | 御国色素株式会社 | 多孔質炭素粒子、多孔質炭素粒子分散体及びこれらの製造方法 |
JP2019151525A (ja) * | 2018-03-02 | 2019-09-12 | 御国色素株式会社 | 多孔質炭素粒子、多孔質炭素粒子分散体及びこれらの製造方法 |
JP7059858B2 (ja) | 2018-08-01 | 2022-04-26 | 東洋インキScホールディングス株式会社 | カーボンブラック分散組成物およびその利用 |
JP2020021632A (ja) * | 2018-08-01 | 2020-02-06 | 東洋インキScホールディングス株式会社 | カーボンブラック分散組成物およびその利用 |
WO2022030636A1 (ja) * | 2020-08-07 | 2022-02-10 | リファインホールディングス株式会社 | 全固体リチウムイオン二次電池用炭素質材料分散体および全固体リチウムイオン二次電池用電極スラリー |
CN113008942A (zh) * | 2021-03-04 | 2021-06-22 | 上海恩捷新材料科技有限公司 | 涂布膜涂层浆料分散性的检测方法、系统 |
WO2023027191A1 (ja) | 2021-08-27 | 2023-03-02 | 御国色素株式会社 | 導電材複合粒子の提供方法 |
KR20240050405A (ko) | 2021-08-27 | 2024-04-18 | 미꾸니 시끼소 가부시키가이샤 | 도전재 복합 입자의 제공 방법 |
Also Published As
Publication number | Publication date |
---|---|
JP2018129305A (ja) | 2018-08-16 |
CN104718649A (zh) | 2015-06-17 |
JPWO2014042266A1 (ja) | 2016-08-18 |
JP6699984B2 (ja) | 2020-05-27 |
KR102188630B1 (ko) | 2020-12-08 |
JP2020074305A (ja) | 2020-05-14 |
US20190221850A1 (en) | 2019-07-18 |
CN104718649B (zh) | 2017-04-12 |
JP6707603B2 (ja) | 2020-06-10 |
KR20150083831A (ko) | 2015-07-20 |
JP2018200898A (ja) | 2018-12-20 |
US20240030449A1 (en) | 2024-01-25 |
US20150311533A1 (en) | 2015-10-29 |
JP6942317B2 (ja) | 2021-09-29 |
KR20200100205A (ko) | 2020-08-25 |
KR102357030B1 (ko) | 2022-02-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6942317B2 (ja) | アセチレンブラック分散スラリーの製造方法 | |
Wan et al. | Low resistance–integrated all‐solid‐state battery achieved by Li7La3Zr2O12 nanowire upgrading polyethylene oxide (PEO) composite electrolyte and PEO cathode binder | |
JP2014107191A (ja) | カーボンナノチューブを用いた分散スラリー及びリチウムイオン二次電池 | |
García et al. | Stability and rheological study of sodium carboxymethyl cellulose and alginate suspensions as binders for lithium ion batteries | |
Ding et al. | Electrochemical performance of hard carbon negative electrodes for ionic liquid-based sodium ion batteries over a wide temperature range | |
JP5728468B2 (ja) | リチウム電気化学電池のための電極および電極材料 | |
JP2007080652A (ja) | リチウムイオン電池の電極形成用スラリーおよびリチウムイオン電池 | |
Çetinel et al. | Processing of water-based LiNi 1/3 Mn 1/3 Co 1/3 O 2 pastes for manufacturing lithium ion battery cathodes | |
KR20130029265A (ko) | 전극 활물질 슬러리의 제조 방법 및 상기 전극 활물질을 이용한 전극을 포함하는 전기 화학 캐패시터 | |
JP2004186075A (ja) | 二次電池用電極及びこれを用いた二次電池 | |
JP6314491B2 (ja) | 二次電池電極形成用組成物、二次電池用電極および二次電池 | |
KR102104689B1 (ko) | 리튬 전기화학 전지용 전극 재료 | |
TW201405924A (zh) | 集電體、電極結構體、非水電解質電池及蓄電構件 | |
JP7319999B2 (ja) | リチウムイオン電池のカソード生産のための分散剤としてのエチルセルロース | |
Bian et al. | Self-doped polyaniline/molybdenum oxide composite nanorods for supercapacitors | |
KR101693930B1 (ko) | 전기화학 소자용 전극의 제조방법, 전기화학 소자용 전극 슬러리, 및 전기화학 소자용 전극 | |
WO2013169605A1 (en) | Coated fluorinated carbon electrodes and coating processes | |
JP2009224188A (ja) | リチウムイオン二次電池およびその正極板の製造方法 | |
US20230050401A1 (en) | Cathode structure for a battery and method of fabricating the same | |
JP2010086738A (ja) | 非水電解液電池 | |
TAKENO et al. | The Electrochemical Society of Japan | |
EP3355396A1 (en) | Slurry composition for manufacturing redox flow battery electrode, and redox flow battery electrode comprising same | |
EP4300634A1 (en) | Carbon black dispersion composition for battery, mixture paste for positive electrode, positive electrode for lithium-ion secondary battery, and lithium-ion secondary battery | |
JP2023103965A (ja) | アルミニウム電池の負極構造 | |
KR20220118726A (ko) | 양극 활물질, 이의 제조방법 및 이를 포함하는 리튬이차전지 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13837655 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20157007521 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2014535617 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14428094 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13837655 Country of ref document: EP Kind code of ref document: A1 |