WO2008056820A1 - Matériau d'électrode négative pour une batterie secondaire lithium-ion et procédé de fabrication de celui-ci - Google Patents
Matériau d'électrode négative pour une batterie secondaire lithium-ion et procédé de fabrication de celui-ci Download PDFInfo
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- WO2008056820A1 WO2008056820A1 PCT/JP2007/072139 JP2007072139W WO2008056820A1 WO 2008056820 A1 WO2008056820 A1 WO 2008056820A1 JP 2007072139 W JP2007072139 W JP 2007072139W WO 2008056820 A1 WO2008056820 A1 WO 2008056820A1
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Definitions
- the present invention relates to a negative electrode material for a lithium ion secondary battery that can be charged and discharged with a large current, and a method for producing the same.
- Lithium secondary batteries using organic electrolytes of lithium salts as non-aqueous electrolyte secondary batteries are lightweight and have high energy density, and are power supplies for small electronic devices, small mobile power supplies or power storage batteries.
- a carbon material is suitable as a negative electrode material because there is no problem of precipitation in the form of dendrites upon occlusion and release of lithium ions.
- the graphite material has high lithium ion occlusion / release properties, and because of its rapid occlusion / release reaction, the charge / discharge efficiency is high, and the theoretical capacity is 3 7 2 mA h / g.
- the potential at the time is almost equal to that of metallic lithium, and there is an advantage that a high voltage battery can be obtained.
- the properties of the carbon material centering on the graphite material are improved, for example, a multilayer in which the surface of a high-graphite graphite material with a high degree of graphitization is coated with a low-rate carbonaceous material with a low degree of graphitization.
- Structure carbon material or black Attempts have been made to eliminate these difficulties by combining a graphite material with a high degree of lead and a carbonaceous material with a low degree of graphitization, and many proposals have been made.
- Japanese Patent Publication No. 4 368778 discloses a carbon anode for a secondary battery in which a surface in contact with an electrolytic solution of carbon as an active material is covered with amorphous carbon, and amorphous carbon. It has a turbulent structure, the average spacing in the C-axis direction is 0.3337 to 0.360 nm, and the peak intensity ratio of 1360 cm— 1 to 1580 cm— 1 in the argon laser Raman spectrum is 0.4 to 1. 0 carbon anodes for secondary batteries have been proposed.
- the d 002 in X-ray wide angle diffraction is 3.37 angstroms or less, the true density is 2.10 g / cm 3 or more, and the volume average particle diameter is 5 ⁇ m or more.
- Electrode materials are used to form an amorphous carbon layer on the surface of graphite particles.
- Japanese Patent Publication No. 6-267533 discloses a DBP absorption of 100 m 1 Z 100 g or more, an arithmetic average primary particle size.
- a lithium secondary battery is disclosed in which lithium as a negative electrode active material is supported on carbon black having particle characteristics of 40 nm or more to form a negative electrode body, and an electrolytic solution containing ethylene carbonate or an organic solvent containing 20% by volume or more thereof is disclosed. ing.
- a negative electrode body of a lithium secondary battery comprising a carbon material capable of occluding lithium as a negative electrode active material and a binder, the carbon material contains DBP absorption amount l O OmlZl OO g or more carbon black and binder is polyvinylidene fluoride
- a negative electrode body for a lithium secondary battery is disclosed.
- 0 Patent Publication 2 0 0 1—3 3 2 2 6 3 discloses that a lithium ion secondary battery containing graphite in which Gs 2 HsgZHsd is 10 or less in a surface-enhanced Raman spectroscopy spectrum of the negative electrode.
- the pond is disclosed, and as a manufacturing method thereof, a mesocarbon microphone mouth bead grown at a temperature not lower than the generation temperature and not higher than 200 ° C., and a carbon-based material composed of at least one of carbon materials.
- Carbon-based negative electrode material including a step of mixing a coating material made of any one of pitch containing free carbon, a pitch containing 2% or more of a component insoluble in quinoline, or a polymer, and a step of graphitizing A manufacturing method is disclosed.
- the generation temperature of the carbon-based material is low, and the average lattice spacing d (004) is 0.33 6 nm or more.
- the graphitic density is not sufficient,
- the irreversible capacity decreases, and furthermore, the technical idea of actively using the high rate characteristics of carbon black is not intended at all.
- the carbon black completely covered with the pitch has a strong cohesive force between the bon blacks, and is uniformly distributed on the graphite surface in a uniformly dispersed state in the pitch. It is difficult to cover. Disclosure of the invention
- Carbon black has a large specific surface area, and carbon black particles form aggregates (structures), which increases loss (charging capacity vs. discharge capacity) and the density of the carbon black layer covering the graphite material. There is a disadvantage that it becomes lower.
- the inventors have conducted extensive research on the development of a negative electrode material that combines these characteristics, taking advantage of the characteristics such as the large reversible capacity and high initial efficiency of graphite and the excellent rate characteristics of amorphous carbon materials. It was.
- the core is composed of graphite powder with an advanced graphite crystallinity, and the surface of the graphite powder is coated with amorphous carbon powder.
- the composite particles of the core 'Shenole structure have high reversible capacity, initial efficiency, and rate characteristics. Confirmed that it could be.
- the present invention has been made on the basis of the above knowledge, and its purpose is to eliminate the above-mentioned conventional problems in the negative electrode material for lithium ion secondary batteries, and to provide excellent rate characteristics, high reversible capacity, and initial efficiency. It is providing the negative electrode material for lithium ion secondary batteries provided with, and its manufacturing method.
- the negative electrode material for a lithium ion secondary battery according to the present invention comprises a graphite powder surface having an average particle diameter of 5 to 30 m and an average lattice spacing d (002) of less than 0.3360 nm.
- Core-shell structure in which amorphous carbon powder with an average particle size of 0.05 to 2 ⁇ m and average lattice spacing d (002) of 0.3360 nm or more is bound and coated with binder pitch charcoal. It has the following properties:! ⁇ 3.
- the average particle size is 7-40 ⁇ m
- the average lattice spacing d (002) of graphite in the core portion of the composite particle is less than 0-3360 nm and the average particle diameter is 5 to 30 m, and the average lattice of amorphous carbon in the chenole portion It is preferable that the interplanar spacing d (002) is 0.3360 nm or more and the average particle diameter is 0.05 to 2 ⁇ m.
- the negative electrode material for a lithium-ion secondary battery has a mean particle size of 5 to 30 m, an average lattice spacing d (002) of less than 0.3360 nm, and a softening point of 70 to 250 ° C.
- amorphous carbon powder with an average particle diameter of 0.05-2 ⁇ ⁇ and an average lattice spacing d (002) of 0.3360 nm or more. Kneading while applying mechanical impact to soften the pitch, disperse and fix the amorphous carbon powder in the softened pitch, and then calcined charcoal at a temperature of 750 to 2250 ° C in a non-oxidizing atmosphere. It is characterized by becoming.
- the negative electrode material for a lithium ion secondary battery according to the present invention is composed of a composite particle having a core-shell structure in which Kurofune powder particles are used as cores and the surface is coated (shell) with graphite. Natural graphite or artificial graphite having an average particle size of 5 to 30 ⁇ m is used.
- the average particle diameter in the present invention means a volume-based median diameter measured by a laser diffraction type particle size distribution measuring apparatus (for example, SALD 2000 manufactured by Shimadzu Corporation).
- this average particle size is less than 5 m, the particle size of the composite particles will be smaller and may be less than 10 / zm, which may cause dispersibility when preparing a slurry with the electrolyte used to make lithium-ion secondary batteries. There is a difficulty that decreases.
- the particle size exceeds 30 ⁇ m, the particle size of the composite particles increases. Especially when the particle size exceeds 40 ⁇ m, the input / output characteristics of the lithium ion secondary battery are low. The capacity maintenance rate at the time of charging / discharging deteriorates.
- the graphite powder preferably has an average lattice spacing d (002) of less than 0.3 360 nm, and an average lattice spacing d (002) of 0.3 3 60 nm or more. Then, irreversible capacity decreases as battery performance.
- the average lattice spacing d (002) is defined by a reflection diffractometer method using a Cu K wire monochromatized by a graphite monochromator by an X-ray wide angle diffraction method. This is the value measured by the Gakushin method.
- the average particle diameter of the amorphous carbon powder forming the shell is preferably 0.05 to 2 ⁇ , and if it is less than 0.05 ⁇ , the ratio of the composite particles Even if the surface area is large and it has excellent input / output characteristics, the loss during the first charge increases, which is not preferable. On the other hand, if it exceeds 2 ⁇ , strong binding to the graphite powder surface cannot be obtained, and the input / output characteristics cannot be improved sufficiently.
- the average lattice spacing d (002) of the amorphous carbon powder is preferably 0.33 60 nm or more, and when it is less than 0.33 60 nm, it is charged with a large current of 2C or more. This is because the capacity retention rate at the time of discharge deteriorates.
- this amorphous carbon powder for example, carbon black, a ground powder of coatus or resin carbide, etc. are used.
- the negative electrode material for a lithium-ion secondary battery according to the present invention is composed of composite particles having a core-shell structure in which the graphite powder is used as a core, and the surface thereof is coated with amorphous carbon with a binder pitch carbide. It is characterized by having the following properties.
- the average particle size is 7 ⁇ 40 ⁇ m
- Nitrogen adsorption specific surface area of 3-7 m 2 Z g is less than 3 m 2 Z g, because the reaction area required for lithium ion desorption is small and the input / output characteristics are low, while 7 m 2 / g This is because the reaction area is large and the loss during the initial charge increases.
- Nitrogen adsorption specific surface area was measured by using a surface area meter (Shimadzu fully automatic surface area measuring device) and pre-dried for 30 minutes at 35 ° C. under nitrogen flow for the measurement target (here, graphite material). After performing This is a value measured by the nitrogen adsorption BET 10-point method using the gas flow method, using a nitrogen helium mixed gas that was precisely adjusted so that the relative pressure of nitrogen relative to the gas was 0.3.
- the average particle size of the composite particles is 7 to 4 ⁇ because the average particle size is small and below 7 im, a slurry with an electrolytic solution is prepared to produce a lithium ion secondary battery. This is because the dispersibility is lowered. In addition, when the length exceeds 40 m, the input / output characteristics of the lithium ion secondary battery are poor. For example, the capacity retention rate when charging / discharging with a large current of 2 C or more deteriorates.
- the Raman spectrum shows the degree of disorder of the crystal structure of the particle surface, measured by a Raman spectroscopic analyzer (JASCO ⁇ NR1100) using an Ar laser with a wavelength of 514 '. 1580 attributed to the disorder of the crystal structure due to crystal defects and misalignment of the laminated structure at 1360 cm— 1 near the 1600 is attributed to the E2g-type vibration corresponding to the lattice vibration in the carbon hexagonal plane 1580
- the negative electrode material for a lithium-ion secondary battery of the present invention is formed from composite particles having such properties, and in the composite particles, the average lattice spacing d (0 02) of graphite forming the core portion is It is preferable that the average particle size is less than 3360 nm and the average particle size is 5 to 30 ⁇ m. Further, the average lattice spacing d (002) of amorphous carbon forming the Chenole portion is 0.3360 ⁇ m or more, and the average particle size Is preferably 0.05 to 2 ⁇ m.
- the tap density is adjusted to 0.9 gZcm 3 or more.
- the tap density is the value after tapping 1000 times with 5 g of composite particles in a 25 ml graduated cylinder and a gap of 1 Omm with the diaphragm.
- the negative electrode material for a lithium-ion secondary battery of the present invention comprising composite particles having these properties is composed of a graphite powder having an average particle diameter of 5 to 30 m and an average lattice spacing d (002) of less than 0.3360 nm and soft powder. After mixing the pitch of 70 ⁇ 250 ° C and covering the surface of the graphite powder, the average particle diameter is 0.05-2m, and the average lattice spacing d (002) is 0.3360n. Amorphous carbon powder of m or more was added and kneaded while applying mechanical impact to soften the pitch, and after dispersing and fixing the amorphous carbon powder in the softened pitch, 75 0 in a non-oxidizing atmosphere.
- the graphite powder and pitch are mixed using an appropriate heating kneader such as a kneader.
- the graphite powder is put into the kneading machine, and the temperature is raised to a predetermined temperature exceeding the soft softness point of the pitch while kneading. Then, pitch is added and kneaded thoroughly.
- the ratio of the graphite powder to the pitch is preferably 10 to 50 parts by weight with respect to 100 parts by weight of the graphite powder. When the amount is less than 10 parts by weight, the entire surface of the black lead powder cannot be coated. When the amount exceeds 50 parts by weight, the black ship powders may be agglomerated to break up individual particles.
- the particle size of the composite particles finally obtained becomes too large, and the thickness of the pitch coating film on the surface of the lead-like carbon particles obtained by unraveling becomes uneven, and there is a powder of only pitch It will be easy. If the thickness of the pitch coating film on the surface of the graphite powder is nonuniform, the coating of the shell particles will be nonuniform and the cycle characteristics will be poor.
- the kneading time may be appropriately determined depending on the capacity of the kneader, the shape of the kneading blade, the amount of raw materials added, etc.
- the powder is cooled to room temperature to obtain graphite powder particles coated with pitch. Furthermore, crush it if necessary.
- a turbo mill manufactured by Matsubo Co., Ltd.
- the calcite jar is used as the calcite jar.
- the mixing ratio of the graphite powder and the amorphous carbon powder is preferably set to 0.5 to 50 parts by weight of the amorphous carbon powder with respect to 100 parts by weight of the graphite powder. If the mixing ratio of the amorphous carbon powder is less than 0.5 parts by weight, the entire surface of the graphite powder cannot be coated, and the amorphous carbon powder does not exist and there are portions, so the high-speed charging performance decreases. However, when the amount exceeds 50 parts by weight, the amount of pitch carbonization increases, and as a result, the reversible capacity decreases, which is preferable. A preferred range is 1 to 30 parts by weight.
- kneading mechanical energy is applied by applying compression and friction of powder particles while applying mechanical impact.
- the temperature of the kneaded product is increased, and when the kneaded product reaches an appropriate temperature range, the pitch is softened.
- the softened pitch is kneaded with the amorphous carbon powder in a state having appropriate tackiness, and the amorphous carbon powder is dispersed and fixed in the softened pitch.
- the amorphous carbon powder is embedded and adhered to the surface of the black bell through the softening pitch. Therefore, the graphite powder and the amorphous carbon powder are firmly bonded and can be uniformly coated.
- the pitch coated on the surface of the black glaze powder is softened, and the amorphous force is converted into graphite powder through the softened pitch. It can be immobilized on the surface.
- Specific examples suitable for this kneading apparatus include mechano-fusion system (Hosokawa Micron Co., Ltd. shelf), hybridizer I (Nara Machinery Co., Ltd. 3 ⁇ 4), and the like. is not.
- the kneaded product After kneading, the kneaded product is heated in a non-oxidizing atmosphere to a temperature of 7500 to 2250 ° C. to carbonize the pitch, thereby converting the amorphous carbon powder dispersed in the pitch onto the surface of the graphite powder. Bond and cover. In this way, composite particles having black & as the core and amorphous carbon as the chenole are obtained.
- the composite particles obtained in this way are crushed and classified as necessary. For example, the maximum particle size is adjusted to 60 m, and the average particle size is adjusted to 7 to 40 ⁇ m. A negative electrode material is produced.
- Spherical natural graphite with an average particle size of 17.0 / im and d (002) 0.33 5 5 nm Co., Ltd .: fc, CGC— 1 5) 100 parts by weight, coal tar pitch (JFE Chemical Co., Ltd .: t ⁇ PKQL, softening point 70 ° C) 30 parts by weight in a kneader After kneading for 1 minute, it was cooled to room temperature. What was obtained was a powder in which individual particles were independent.
- furnace black which is carbon black (STA) (manufactured by Tokai Carbon Co., Ltd.) (crystal plane spacing d (002) by X-ray diffraction is 0.3 6 20 nm, average particle diameter is 0.7 ⁇ ) 1 0 Part by weight was added and mixed thoroughly.
- the obtained mixed powder was put into a hybridizer apparatus (manufactured by Nara Machinery Co., Ltd.) and treated at a rotational speed of 8 000 rpm for 3 minutes while keeping the maximum temperature in the apparatus at 75 ° C or lower.
- the obtained powder was calcined at 800 ° C. in a nitrogen gas atmosphere. Next, crushing (device name: turbo mill, Matsubo Co., Ltd .; h3 ⁇ 4) and classification (device name: sieve classification, mesh opening 3 2 // m) were performed, and the sieved fraction was produced as composite particles.
- the obtained powder was calcined at 1 000 ° C. in a nitrogen gas atmosphere.
- unraveling device name: turbo mill, Matsupo Co., Ltd.
- classification device name: sieving classification, mesh opening 3
- the powder under the armpit obtained as a composite particle was produced.
- Spherical natural graphite with an average particle size of 3 0. 0 ⁇ m, d (002) 0.3 3 5 5 ⁇ m MCP-1150D, softening point 150 ° C.) 1 part by weight was kneaded in a kneader for 30 minutes and then cooled to room temperature. What was obtained was a powder in which the individual particles were independent. Next, 5 parts by weight of non-graphite coke (with a crystal plane distance d (002) of 3422 nm and an average particle size of 1.8 ⁇ by X-ray diffraction) was added and mixed thoroughly.
- the obtained mixed powder was put into a high pre-dither apparatus (manufactured by Nara Machinery Co., Ltd.) and treated at a rotational speed of 8000 rpm for 3 minutes while keeping the maximum temperature in the apparatus at 165 ° C or lower.
- the obtained powder was calcined at 1500 ° C. in a nitrogen gas atmosphere. Subsequently, the powder under the sieve obtained by unraveling (device name: turbo mill, Matsubo Co., Ltd.) and classification (device name: sieve classification, self-opening 32 m) was produced as composite particles.
- carbon microspheres Tokai Carbon Co., Ltd., X-ray diffraction crystal plane spacing d (002) 0.36 40 nm, average particle size 0.4 ⁇ m
- the obtained mixed powder was put into a hybridizer apparatus (manufactured by Nara Machinery Co., Ltd.) and treated at a rotation speed of 8000 rpm for 3 minutes while keeping the maximum temperature in the apparatus at 270 ° C or lower.
- the obtained powder was calcined at 1500 ° C. in a nitrogen gas atmosphere. Subsequently, the powder under the sieve obtained by crushing (device name: turbo mill, Matsubo Co., Ltd .: h) and classification (device name: sieve classification, mesh opening 32 urn) was produced as composite particles.
- Average particle size 5. 0 ⁇ m, d (002) 0-3357 nm, easy graphite 2800.
- a coarse-grained product of carbon black, Asahi Thermal Co., Ltd. made by Asahi-Bonn Co., Ltd., crystal plane spacing d (002) by X-ray diffraction of 0.3630 nm, average particle size of 0.05 m ) 10 parts by weight was added and mixed well.
- the obtained mixed powder is put into a hybridizer device (manufactured by Nara Machinery Co., Ltd.), and treated at 8000 rpm for 3 minutes while keeping the maximum temperature in the device at 75 ° C or less.
- the obtained powder was calcined at 2250 ° C. in a nitrogen gas atmosphere.
- crushing equipment Name: turbo mill, manufactured by Matsubo Co., Ltd., classification (apparatus name: sieve classification, cleaved 32 ⁇ )
- the powder under sieve obtained as a composite particle was produced.
- Example 1 composite particles were produced in the same manner as in Example 1 except that the high pre-dither treatment was not performed.
- Composite particles were produced in the same manner as in Example 1, except that in Example 1, the coal tar pitch was changed to a coal tar modified product (softening point 60 ° C.).
- Example 1 composite particles were produced in the same manner as in Example 1 except that the coal tar pitch was changed to a mesophase pitch modified product (softening point 300 ° C.).
- Composite particles were produced in the same manner as in Example 1 except that they were used.
- Example 1 composite particles were produced in the same manner as in Example 1 except that the heat treatment temperature was 2500 ° C.
- Example 1 composite particles were produced in the same manner as in Example 1 except that the amount of coal tar pitch input was 0.4 parts by weight and the heat treatment temperature was 2500 ° C. Comparative Example 9
- Example 1 composite particles were produced in the same manner as in Example 1 except that the heat treatment temperature was set at 7 ° C. to 0 ° C.
- Table 1 shows the production raw material characteristics and mixing parts by weight of the composite particles obtained in Examples 1 to 5 and Comparative Examples 1 to 10, and Table 2 shows the production conditions and characteristics of the composite particles.
- lithium-ion secondary batteries were prepared by the following method and the battery performance was evaluated.
- CMC carboxymethylcellulose
- SBR styrene-butadiene rubber
- the obtained negative electrode mixture paste was applied onto a copper foil (current collector) having a thickness of 18 / im, and heated to 130 ° C. in a vacuum to completely evaporate the solvent.
- the obtained electrode sheet was rolled with a roller press so that the electrode plate density was 1.5 g / cc, and punched with a punch to obtain a working electrode.
- a button type battery was assembled as an evaluation battery in an inert atmosphere.
- electrolyte a mixed solution of ethylene carbonate (EC) and jetyl carbonate (DEC) 1: 1 in which lmo 1 / dm 3 lithium salt LiPF 6 was dissolved was used.
- Charge is maintained at a constant potential until the lower limit current reaches 0.02 mA Z cm 2 after the constant current charge is completed with a current density of 0.2 mAZcm 2 and a final voltage of 5 mV.
- Discharge current density 0.2111 / / 0; a constant current discharge to the final voltage of 1 • 5 V at 111 2, the discharge capacity after 5 cycles completion was rated capacity.
- constant current charging at 5 mA / cm 2 was performed, and the results of the charge / discharge test are shown in Table 3.
- Table 3 Table 3
- Comparative Examples 1, 2, 3, and 5 the final powder obtained did not form a core shell structure, so the charge acceptability of the core material was not improved, and the 2 C charge The charging capacity at times is smaller than in Example 1.
- Comparative Example 4 the particle diameter of the core material is large and the lithium ion diffusion distance inside the carbon is long, so the 2 C charge capacity is small. Value.
- Comparative Examples 6 and 7 due to the development of the crystal structure of the shell, the storage sites and reaction sites of lithium ions decreased, and the reversible capacity and 2 C charge capacity decreased.
- Comparative Example 8 because the amount of carbon precursor added is small, the shell coverage is small and the 2 C charge capacity is small.
- Comparative Example 9 since the firing temperature was low, a large amount of unburned surface was present, and a wasteful charge loss that was not involved in the battery reaction occurred during the initial charge.
- Comparative Example 10 since the core material d (002) is large, the degree of development of the graphite crystal structure is small, and the number of lithium ion insertion sites is small, so the reversible capacity is small.
- the surface of the graphite powder is uniformly coated with amorphous carbon, and the crystallinity of the graphite surface can be reduced while suppressing the specific surface area. Therefore, it is possible to provide a negative electrode material for a lithium ion secondary battery that has high charge / discharge efficiency, high capacity, and excellent input / output characteristics, and a method for manufacturing the same.
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP07831869A EP2081243B1 (en) | 2006-11-10 | 2007-11-08 | Negative electrode material for lithium ion secondary battery and method for producing the same |
JP2008543158A JP5062596B2 (ja) | 2006-11-10 | 2007-11-08 | リチウムイオン二次電池用負極材とその製造方法 |
CN2007800405167A CN101529624B (zh) | 2006-11-10 | 2007-11-08 | 用于锂离子二次电池的负极材料及其制造方法 |
US12/311,675 US8153303B2 (en) | 2006-11-10 | 2007-11-08 | Negative electrode material for lithium ion secondary battery and method for producing the same |
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JP2006-305018 | 2006-11-10 | ||
JP2006305018 | 2006-11-10 |
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WO2008056820A1 true WO2008056820A1 (fr) | 2008-05-15 |
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PCT/JP2007/072139 WO2008056820A1 (fr) | 2006-11-10 | 2007-11-08 | Matériau d'électrode négative pour une batterie secondaire lithium-ion et procédé de fabrication de celui-ci |
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US (1) | US8153303B2 (ja) |
EP (1) | EP2081243B1 (ja) |
JP (1) | JP5062596B2 (ja) |
KR (1) | KR101377331B1 (ja) |
CN (1) | CN101529624B (ja) |
TW (1) | TWI418081B (ja) |
WO (1) | WO2008056820A1 (ja) |
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JP2009004304A (ja) * | 2007-06-25 | 2009-01-08 | Nippon Carbon Co Ltd | リチウム二次電池用負極活物質及びそれを使用した負極 |
JP2010218758A (ja) * | 2009-03-13 | 2010-09-30 | Tokai Carbon Co Ltd | リチウム二次電池用負極材及びその製造方法 |
WO2011062232A1 (ja) * | 2009-11-18 | 2011-05-26 | 三井化学株式会社 | 電気化学セル用水性ペースト、該水性ペーストを塗布してなる電気化学セル用極板、および該極板を含む電池 |
JP5480911B2 (ja) * | 2009-11-18 | 2014-04-23 | 三井化学株式会社 | 電気化学セル用水性ペースト、該水性ペーストを塗布してなる電気化学セル用極板、および該極板を含む電池 |
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JP2019165020A (ja) * | 2012-08-23 | 2019-09-26 | 三菱ケミカル株式会社 | 非水系電解液二次電池用炭素材、非水系電解液二次電池用負極、非水系電解液二次電池、及び非水系電解液二次電池用炭素材の製造方法 |
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JP7118926B2 (ja) | 2012-08-23 | 2022-08-16 | 三菱ケミカル株式会社 | 非水系電解液二次電池用炭素材、非水系電解液二次電池用負極、非水系電解液二次電池、及び非水系電解液二次電池用炭素材の製造方法 |
JP2015024943A (ja) * | 2013-07-29 | 2015-02-05 | イビデン株式会社 | 黒鉛材料の製造方法 |
CN104485458A (zh) * | 2014-12-03 | 2015-04-01 | 林前锋 | 一种石墨球的制备方法 |
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WO2021192651A1 (ja) * | 2020-03-24 | 2021-09-30 | 東海カーボン株式会社 | リチウムイオン二次電池用負極材及びリチウムイオン二次電池用負極材の製造方法 |
JP2021152998A (ja) * | 2020-03-24 | 2021-09-30 | 東海カーボン株式会社 | リチウムイオン二次電池用負極材、リチウムイオン二次電池用負極材の製造方法およびリチウムイオン二次電池用負極材の製造材料 |
JP2021152999A (ja) * | 2020-03-24 | 2021-09-30 | 東海カーボン株式会社 | リチウムイオン二次電池用負極材及びリチウムイオン二次電池用負極材の製造方法 |
WO2021192650A1 (ja) * | 2020-03-24 | 2021-09-30 | 東海カーボン株式会社 | リチウムイオン二次電池用負極材、リチウムイオン二次電池用負極材の製造方法およびリチウムイオン二次電池用負極材の製造材料 |
JP7201635B2 (ja) | 2020-03-24 | 2023-01-10 | 東海カーボン株式会社 | リチウムイオン二次電池用負極材及びリチウムイオン二次電池用負極材の製造方法 |
JP7201634B2 (ja) | 2020-03-24 | 2023-01-10 | 東海カーボン株式会社 | リチウムイオン二次電池用負極材の製造方法およびリチウムイオン二次電池用負極材の製造材料 |
Also Published As
Publication number | Publication date |
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TWI418081B (zh) | 2013-12-01 |
US8153303B2 (en) | 2012-04-10 |
TW200830617A (en) | 2008-07-16 |
KR20090081379A (ko) | 2009-07-28 |
EP2081243A4 (en) | 2010-03-03 |
JPWO2008056820A1 (ja) | 2010-02-25 |
EP2081243B1 (en) | 2012-08-08 |
US20100021820A1 (en) | 2010-01-28 |
CN101529624B (zh) | 2011-05-25 |
EP2081243A1 (en) | 2009-07-22 |
CN101529624A (zh) | 2009-09-09 |
JP5062596B2 (ja) | 2012-10-31 |
KR101377331B1 (ko) | 2014-03-25 |
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