WO2012141308A1 - Composite de noir de carbone et batterie secondaire lithium-ion utilisant celui-ci - Google Patents

Composite de noir de carbone et batterie secondaire lithium-ion utilisant celui-ci Download PDF

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Publication number
WO2012141308A1
WO2012141308A1 PCT/JP2012/060172 JP2012060172W WO2012141308A1 WO 2012141308 A1 WO2012141308 A1 WO 2012141308A1 JP 2012060172 W JP2012060172 W JP 2012060172W WO 2012141308 A1 WO2012141308 A1 WO 2012141308A1
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Prior art keywords
carbon
carbon black
specific surface
surface area
positive electrode
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PCT/JP2012/060172
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English (en)
Japanese (ja)
Inventor
晃 與田
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電気化学工業株式会社
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Publication of WO2012141308A1 publication Critical patent/WO2012141308A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—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
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • 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 black composite and the use of the carbon black composite in a lithium ion secondary battery using the carbon black composite as a conductive aid for an electrode material.
  • the lithium ion secondary battery in which the negative electrode is formed using a material capable of occluding and releasing lithium ions can suppress the deposition of dendride compared to the lithium battery in which the negative electrode is formed using metallic lithium. Therefore, there is an advantage that a battery having a high capacity and a high energy density can be provided while safety is improved by preventing a short circuit of the battery.
  • Patent Documents 2 to 4 there have been some devices that use a carbon conductive material to reduce electrode resistance for charging and discharging large currents of lithium ion secondary batteries.
  • Patent Documents 2 to 4 there have been some devices that use a carbon conductive material to reduce electrode resistance for charging and discharging large currents of lithium ion secondary batteries.
  • Patent Documents 2 to 4 when the charge / discharge cycle with a large current is repeated, there is a problem that the conductive path of the particles between the positive and negative electrodes is lost due to the expansion and contraction of the positive and negative electrode materials, and as a result, a large current cannot flow quickly.
  • Non-oxides such as olivine-type lithium iron phosphate (LiFePO 4 ) have been attracting attention as positive electrode materials for lithium ion batteries from the viewpoint of safety and cost emphasis.
  • the resistance itself is large, and the low resistance is a big problem (Patent Documents 5 and 6).
  • the negative electrode When large current charging / discharging is performed, the negative electrode also needs high-speed charging / discharging characteristics, and lithium titanate (Li 4 Ti 5 O 12 ), which has the characteristics of small volume change during occlusion and release of lithium ions, has attracted attention.
  • lithium titanate Li 4 Ti 5 O 12
  • graphite which is the current material
  • the present invention has been made to address the problems of the electrode material for a lithium ion secondary battery, and is a conductive assistant for a lithium ion secondary battery that enables large-current charge / discharge of the lithium ion secondary battery. It aims at providing the carbon black composite used as an agent.
  • Another object of the present invention is to provide a lithium ion secondary battery capable of charging and discharging a large current by using a carbon black composite as a conductive additive.
  • Carbon black having a band ratio D / G indicating the degree of crystallinity (G band) and defect (D band) and Raman carbon (D band) of 1.10 or less and fibrous carbon are connected.
  • Carbon black composite (2)
  • the specific surface area of carbon black in the carbon black composite is smaller than the specific surface area of fibrous carbon and is 10 to 60 m 2 / g.
  • the fibrous carbon in the carbon black composite is a carbon nanotube having a fiber diameter of 5 to 50 nm and a specific surface area of 50 to 400 m 2 / g.
  • the ratio of carbon black to fibrous carbon is 30:70 to 95: 5 by mass ratio.
  • the present invention adopts the following means in order to solve the above problems.
  • a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material different from the positive electrode active material, an electrolyte in which the positive electrode and the negative electrode are immersed, a separator separating the positive electrode and the negative electrode, and a positive electrode active material
  • the carbon black composite used as a conductive auxiliary for the carbon black composite has a band ratio D / G of 1.10 indicating the degree of crystallinity (G band) and defect (D band) by Raman spectroscopy.
  • a lithium ion secondary battery characterized in that the following carbon black and fibrous carbon are connected.
  • the specific surface area of carbon black in the carbon black composite is smaller than the specific surface area of fibrous carbon and is 10 to 60 m 2 / g.
  • the fibrous carbon in the carbon black composite is a carbon nanotube having a fiber diameter of 5 to 50 nm and a specific surface area of 50 to 400 m 2 / g.
  • the ratio of carbon black to fibrous carbon in the carbon black composite is 30:70 to 95: 5 by mass ratio.
  • the dust resistance of the positive electrode material for the lithium ion secondary battery can be greatly reduced.
  • the carbon black composite of the present invention is a lithium ion secondary battery comprising an electrode group formed by being laminated or wound through a separator as a negative electrode and a positive electrode, and an electrolytic solution in which the electrode group is immersed.
  • a lithium metal oxide may be used as the positive electrode material, and a carbon-based material, a transition metal, and an oxide thereof may be used as the negative electrode material.
  • the active material contained in the positive electrode material is different from the active material contained in the negative electrode material.
  • an organic solvent in which a lithium salt is dissolved, an ionic liquid, or the like may be used as the electrolytic solution.
  • the Raman spectrum of carbon black was obtained by measuring using a microscopic laser Raman measuring apparatus Nicolet Almega XR (Thermo Fisher) at an excitation laser wavelength of 532 nm and an exposure time of 5 seconds. Further, D / G of carbon black was calculated by dividing the peak of wave number 1600 cm ⁇ 1 as the G band, the peak of 1360 cm ⁇ 1 as the D band, and dividing the peak intensity of the D band by the peak intensity of the G band.
  • the fibrous carbon is a carbon nanotube having a fiber diameter of 5 to 50 nm and a specific surface area of 50 to 400 m 2 / g, and the specific surface area of carbon black is more than the specific surface area of the fibrous carbon. It is preferably small and 10 to 60 m 2 / g.
  • the specific surface area was measured using a full-automatic BET specific surface area measuring device Macsorb (manufactured by MOUNTECH) using nitrogen gas as an adsorbed gas according to JIS K 6217-2.
  • an active material mainly a positive electrode active material.
  • the composite of the present invention improves the electron conduction network in the electrode containing the active material and lowers the dust resistance, so that the electrode resistance is reduced and large current charge / discharge is possible.
  • the carbon black composite is obtained by connecting fibrous carbon and carbon black.
  • the connection between fibrous carbon and carbon black is not just a contact, it means that the fibrous carbon and carbon black are physically fused, and it is not easily separated by normal mechanical operation. There is no contact resistance between the formed fibrous carbon and carbon black, and electrons can move freely. Therefore, even after mixing with the active material, the carbon black composite remains as it is, so that good dispersibility can be obtained, high conductivity can be maintained, and stable conductivity with little variation can be obtained.
  • carbon black having a band ratio D / G of 1.10 or less indicating the degree of crystallinity (G band) and defect (D band) by Raman spectroscopy is linked to fibrous carbon.
  • D / G of carbon black exceeds 1.10, the conductivity is lowered due to the decrease in crystallinity, and the dust resistance is extremely deteriorated, so that it is not suitable for the present invention.
  • the fibrous carbon used in the present invention is carbon fiber (carbon fiber), vapor-grown carbon fiber, carbon nanotube, carbon nanofiber or the like.
  • fibrous carbon can be appropriately selected. Since fibrous carbon effectively exchanges electrons with the active material, it is particularly preferable that the fiber diameter of the fibrous carbon is small, specifically 5 to 50 nm, and preferably 5 to 30 nm. Is more preferable. In order to transfer and receive electrons more effectively, it is preferable that fine irregularities are appropriately present on the surface of the fibrous carbon. The number of irregularities can be represented by a specific surface area, and the more the irregularities, the larger the specific surface area.
  • the specific surface area of the fibrous carbon is preferably 50 to 400 m 2 / g, and more preferably 100 to 300 m 2 / g.
  • the fiber diameter of the fibrous carbon was observed at a magnification of 30,000 times using a transmission electron microscope (TEM), each fiber diameter of 100 fibrous carbons was measured, and the average value was taken as the fiber diameter.
  • TEM transmission electron microscope
  • the carbon black used in the present invention keeps the conductivity of the entire electrode and plays a role as a buffer for expansion / contraction of the active material.
  • the carbon black used in the present invention specifically, thermal black, furnace black, lamp black, channel black, acetylene black and the like may be used.
  • the specific surface area of the carbon black contained in the carbon black composite is moderately small and smaller than the specific surface area value of the fibrous carbon, the present inventors reduce the dust resistance, and the large current charge / discharge I found out that it would be possible. The reason for this is not clear, but as described above, the surface of the carbon black, which is the counterpart of the fibrous carbon having fine irregularities on the surface, is rather smoother to some extent than the fine irregularities. It is inferred that this is to improve.
  • the specific surface area of carbon black is preferably smaller than the specific surface area of fibrous carbon and is 10 to 60 m 2 / g.
  • the ratio of carbon black to fibrous carbon in the carbon black composite of the present invention is preferably 30:70 to 95: 5 by mass ratio.
  • the proportion of fibrous carbon increases, the function as a cushioning material for the expansion / contraction of the active material, which is the role of carbon black, becomes difficult to be exhibited.
  • the proportion of fibrous carbon is small, the amount of fibrous carbon is small, so that it is difficult to effectively exchange electrons between the fibrous carbon and the active material.
  • Carbon black composite is a composite of fibrous carbon and carbon black.
  • the manufacturing method is not particularly limited, for example, there is a method of combining fibrous carbon and carbon black by a mechanochemical method using a solid medium.
  • Compounding by a mechanochemical method is compounding using a medium stirring type mixer such as a bead mill, a vibration mill, or a ball mill, and then bonded more firmly by heat treatment at 500 to 800 ° C.
  • Example 1 The Raman spectrum of carbon black was obtained by measuring using a microscopic laser Raman measuring apparatus Nicolet Almega XR (Thermo Fisher) at an excitation laser wavelength of 532 nm and an exposure time of 5 seconds. Further, D / G of carbon black was calculated by dividing the peak of wave number 1600 cm ⁇ 1 as the G band, the peak of 1360 cm ⁇ 1 as the D band, and dividing the peak intensity of the D band by the peak intensity of the G band.
  • NC75 (D / G: 0.93, specific surface area: 30 m 2 / g) manufactured by Denki Kagaku Kogyo as carbon black
  • CNF-T fiber diameter: 20 nm, specific surface area
  • Mitsubishi Materials Electronic Chemical as fibrous carbon : 220 m 2 / g 2 g
  • carbon nanotubes and fibrous carbon were mechanochemically combined with carbon nanotubes and carbon black by stirring for 5 hours with a vibration mill using an agitation medium made of alumina balls. .
  • the obtained mixture was dried by holding at 100 ° C.
  • olivine type lithium iron phosphate (primary particle size: 500 nm) made of fostic lithium was added, and 8 hours using a separator. Crushing to form a positive electrode material mixture.
  • the dust resistance value of the positive electrode material was 5.89 ⁇ ⁇ cm.
  • Example 2 A positive electrode material mixture was formed in the same manner as in Example 1 except that heat treatment was performed at 400 ° C. after forming the positive electrode material mixture.
  • the dust resistance value of the positive electrode material was 4.09 ⁇ ⁇ cm.
  • Example 3 A positive electrode material mixture was formed in the same manner as in Example 1 except that heat treatment was performed at 700 ° C. after forming the positive electrode material mixture.
  • the dust resistance value of the positive electrode material was 2.65 ⁇ ⁇ cm.
  • CNF-T fiber diameter: 20 nm, specific surface area
  • carbon black and fibrous carbon are mixed with an agitating medium made of alumina balls, using a vibration mill. By wet stirring for 5 hours, mechanochemical combination of carbon nanotubes and carbon black and mixing with olivine type lithium iron phosphate were simultaneously performed.
  • Example 5 Carbon black and fibrous carbon were produced in the same manner as in Example 4 except that HS-100 (D / G: 1.06, specific surface area: 40 m 2 / g) manufactured by Denki Kagaku Kogyo was used as carbon black.
  • the mechanochemical compounding of the mixture and mixing with olivine type lithium iron phosphate were carried out at the same time, ethanol was removed by filtration, the resulting mixture was dried, and then the mixture was removed for 8 hours using a sieve. The mixture was crushed and heat treated at 700 ° C. to form a positive electrode material mixture.
  • the powder resistance value of the positive electrode material was 3.95 ⁇ ⁇ cm.
  • Example 6 Carbon black and fibrous carbon were produced in the same manner as in Example 4 except that Super-P Li (D / G: 1.02, specific surface area: 63 m 2 / g) manufactured by TIMCAL was used as carbon black.
  • the mechanochemical complexation and mixing with olivine type lithium iron phosphate were carried out at the same time, ethanol was removed by filtration, the resulting mixture was dried, and then the mixture was pulverized for 8 hours using a sieve. Then, a positive electrode material mixture was formed by heat treatment at 700 ° C. The powder resistance value of the positive electrode material was 5.13 ⁇ ⁇ cm.
  • Example 7 A mechanochemical reaction between carbon black and fibrous carbon in the same manner as in Example 4 except that VGCF-X (fiber diameter: 15 nm, specific surface area: 260 m 2 / g) manufactured by Showa Denko was used as the fibrous carbon. Simultaneous complexation and mixing with olivine-type lithium iron phosphate, the ethanol is removed by filtration, the resulting mixture is dried, and then the mixture is crushed for 8 hours using a sieve, A positive electrode material mixture was formed by heat treatment at 700 ° C. The powder resistance value of the positive electrode material was 4.53 ⁇ ⁇ cm.
  • Example 8 A mechanochemical reaction between carbon black and fibrous carbon by the same method as in Example 4 except that Showa Denko VGCF-S (fiber diameter: 80 nm, specific surface area: 43 m 2 / g) was used as the fibrous carbon. Simultaneous complexation and mixing with olivine-type lithium iron phosphate, the ethanol is removed by filtration, the resulting mixture is dried, and then the mixture is crushed for 8 hours using a sieve, A positive electrode material mixture was formed by heat treatment at 700 ° C. The powder resistance value of the positive electrode material was 4.98 ⁇ ⁇ cm.
  • Example 9 5g NC75 (D / G: 0.93, specific surface area: 30m 2 / g) manufactured by Denki Kagaku Kogyo as carbon black, CNF-T (fiber diameter: 20nm, specific surface area) manufactured by Mitsubishi Materials Electronic Chemical as fibrous carbon : Mechanochemical combination of carbon black and fibrous carbon and mixing with olivine type lithium iron phosphate were carried out at the same time by the same method as in Example 4 except that 5 g of 220 m 2 / g) was used. The ethanol was removed by filtration, the resulting mixture was dried, and then the mixture was pulverized for 8 hours using a sieve and heat treated at 700 ° C. to form a positive electrode material mixture. The powder resistance value of the positive electrode material was 5.67 ⁇ ⁇ cm.
  • Comparative Example 1 NC75 (D / G: 0.93, specific surface area: 30 m 2 / g) manufactured by Denki Kagaku Kogyo as carbon black, CNF-T (fiber diameter: 20 nm, specific surface area) manufactured by Mitsubishi Materials Electronic Chemical as fibrous carbon : 220 m 2 / g) was used.
  • the carbon black and fibrous carbon are mixed with 90 g of olivine-type lithium iron phosphate (primary particle size: 500 nm) made of fastic lithium by crushing and mixing for 8 hours using a roughing machine to obtain a positive electrode material mixture Formed.
  • the powder resistance value of the positive electrode material was 7.83 ⁇ ⁇ cm.
  • Comparative Example 3 A mechanochemical reaction between carbon black and fibrous carbon by the same method as in Comparative Example 2 except that VGCF-X (fiber diameter: 15 nm, specific surface area: 260 m 2 / g) manufactured by Showa Denko was used as the fibrous carbon. Simultaneous complexation and mixing with olivine-type lithium iron phosphate, the ethanol is removed by filtration, the resulting mixture is dried, and then the mixture is crushed for 8 hours using a sieve, A positive electrode material mixture was formed by heat treatment at 700 ° C. The powder resistance value of the positive electrode material was 6.62 ⁇ ⁇ cm.
  • Comparative Example 4 A mechanochemical reaction between carbon black and fibrous carbon by the same method as in Comparative Example 2 except that VGCF-S (fiber diameter: 80 nm, specific surface area: 43 m 2 / g) manufactured by Showa Denko was used as the fibrous carbon. Simultaneous complexation and mixing with olivine-type lithium iron phosphate, the ethanol is removed by filtration, the resulting mixture is dried, and then the mixture is crushed for 8 hours using a sieve, A positive electrode material mixture was formed by heat treatment at 700 ° C. The powder resistance value of the positive electrode material was 6.79 ⁇ ⁇ cm.
  • Comparative Example 5 Carbon black was produced in the same manner as in Example 4 except that 10 g of NC75 (D / G: 0.93, specific surface area: 30 m 2 / g) manufactured by Denki Kagaku Kogyo was used as carbon black, and fibrous carbon was not used. And olivine-type lithium iron phosphate are mixed, ethanol is removed by filtration, the resulting mixture is dried, and then the mixture is pulverized for 8 hours using a sieve and heat treated at 700 ° C. As a result, a positive electrode material mixture was formed. The powder resistance value of the positive electrode material was 7.34 ⁇ ⁇ cm.
  • the carbon black composite of the present invention When the carbon black composite of the present invention is used as a conductive additive for a lithium ion secondary battery, it is possible to charge and discharge a lithium ion secondary battery with a large current.
  • the lithium ion secondary battery using the carbon black composite of the present invention can be suitably used for applications that require large current charge / discharge, such as electric tools and hybrid cars.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

La présente invention concerne un agent auxiliaire conducteur capable de réduire la résistance aux chocs de comprimé en cru d'un matériau d'électrode positive utilisé pour une batterie secondaire lithium-ion. Un composite de noir de carbone est décrit dans lequel un noir de carbone ayant un rapport de bande (D/G) de 1,10 ou moins et un carbone fibreux sont liés mutuellement, le rapport de bande représentant les degrés de cristallinité (bande G) et de défaut (bande D) en spectroscopie Raman. Il est préférable que la surface spécifique du noir de carbone soit inférieure à la surface spécifique du carbone fibreux et soit de 10 à 60 m2/g. Il est préférable que le carbone fibreux soit un nanotube de carbone ayant un diamètre de fibre de 5 à 50 nm et une surface spécifique de 50 à 400 m2/g. Il est également préférable que la proportion entre le carbone fibreux et le noir de carbone soit de 70:30 à 5:95 en rapport de masse.
PCT/JP2012/060172 2011-04-15 2012-04-13 Composite de noir de carbone et batterie secondaire lithium-ion utilisant celui-ci WO2012141308A1 (fr)

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JP2011-091490 2011-04-15
JP2011091490 2011-04-15

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015015894A1 (fr) * 2013-07-31 2015-02-05 日産自動車株式会社 Électrode positive utilisable dans un accumulateur à électrolyte non aqueux et accumulateur à électrolyte non aqueux l'utilisant
JP2015115106A (ja) * 2013-12-09 2015-06-22 三星エスディアイ株式会社Ｓａｍｓｕｎｇ ＳＤＩ Ｃｏ．，Ｌｔｄ． 導電組成物、正極、およびリチウムイオン二次電池。
JP2017201006A (ja) * 2016-04-28 2017-11-09 株式会社ＤＲ．ｇｏｏ 嵩密度の異なったカーボンの造粒物の製造方法及びその方法で得られたカーボンの造粒物
JPWO2016157834A1 (ja) * 2015-03-31 2018-01-25 日本ゼオン株式会社 炭素膜およびその製造方法
JP2019003946A (ja) * 2013-09-18 2019-01-10 株式会社東芝 正極

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JP2010108889A (ja) * 2008-09-30 2010-05-13 Denki Kagaku Kogyo Kk 二次電池用正極
JP2010248397A (ja) * 2009-04-17 2010-11-04 Denki Kagaku Kogyo Kk カーボンブラック複合体の製造方法
WO2011062019A1 (fr) * 2009-11-18 2011-05-26 電気化学工業株式会社 Matériau d'électrode positive pour batterie secondaire au lithium-ion et procédé de fabrication associé

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JPS6038472A (ja) * 1983-08-12 1985-02-28 Denki Kagaku Kogyo Kk 複合構造のカ−ボンブラック及びその製法
JPS6295351A (ja) * 1985-10-22 1987-05-01 Denki Kagaku Kogyo Kk 複合構造のカ−ボンブラツクの製法
JP2010031214A (ja) * 2008-07-02 2010-02-12 Denki Kagaku Kogyo Kk カーボンブラック複合体及びその用途
JP2010077313A (ja) * 2008-09-26 2010-04-08 Denki Kagaku Kogyo Kk カーボンブラック複合体及びその製造方法
JP2010108889A (ja) * 2008-09-30 2010-05-13 Denki Kagaku Kogyo Kk 二次電池用正極
JP2010248397A (ja) * 2009-04-17 2010-11-04 Denki Kagaku Kogyo Kk カーボンブラック複合体の製造方法
WO2011062019A1 (fr) * 2009-11-18 2011-05-26 電気化学工業株式会社 Matériau d'électrode positive pour batterie secondaire au lithium-ion et procédé de fabrication associé

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015015894A1 (fr) * 2013-07-31 2015-02-05 日産自動車株式会社 Électrode positive utilisable dans un accumulateur à électrolyte non aqueux et accumulateur à électrolyte non aqueux l'utilisant
JP2019003946A (ja) * 2013-09-18 2019-01-10 株式会社東芝 正極
JP2015115106A (ja) * 2013-12-09 2015-06-22 三星エスディアイ株式会社Ｓａｍｓｕｎｇ ＳＤＩ Ｃｏ．，Ｌｔｄ． 導電組成物、正極、およびリチウムイオン二次電池。
JPWO2016157834A1 (ja) * 2015-03-31 2018-01-25 日本ゼオン株式会社 炭素膜およびその製造方法
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EP3279138A4 (fr) * 2015-03-31 2018-10-31 Zeon Corporation Film de carbone et son procédé de production
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JP2017201006A (ja) * 2016-04-28 2017-11-09 株式会社ＤＲ．ｇｏｏ 嵩密度の異なったカーボンの造粒物の製造方法及びその方法で得られたカーボンの造粒物

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