公开(公告)号：US20070275302A1

公开(公告)日：2007-11-29

申请号：US10585205

申请日：2004-12-28

申请人： Chiaki Sotowa ,  Masataka Takeuchi ,  Hidekazu Mori ,  Masahiro Yamakawa

发明人： Chiaki Sotowa ,  Masataka Takeuchi ,  Hidekazu Mori ,  Masahiro Yamakawa

IPC分类号： H01M4/62 ,  H01M4/58

CPC分类号： H01M4/0433 ,  H01M4/133 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M4/661 ,  H01M2004/021 ,  Y10T29/49108 ,  Y10T29/49115

摘要： The present invention relates to a negative electrode material for a lithium battery characterized by comprising a carbonaceous negative electrode active substance having a specific surface area of 1 m2/g or more, a binder formed of styrene-butadiene rubber and a carbon fiber having a fiber diameter of 1 to 1,000 nm; and to a lithium battery using the negative electrode material, which has excellent characteristics, i.e., low electrode resistance, high electrode strength, excellent electrolytic solution permeability, high energy density, and good high-speed charging/discharging performance. The negative electrode material contains carbon fiber in the amount of 0.05 to 20 mass % and the binder formed of styrene-butadiene rubber in 0.1 to 6.0 mass %, and may further contain a thickner such as carboxymethyl cellulose in the amount of 0.3 to 3 mass %.

摘要翻译： 本发明涉及一种锂电池用负极材料，其特征在于，具有比表面积为1m 2 / g以上的碳质负极活性物质，由苯乙烯 - 丁二烯 橡胶和纤维直径为1〜1000nm的碳纤维; 并且使用具有优异的特性，即低电极电阻，高电极强度，优异的电解液渗透性，高能量密度和良好的高速充电/放电性能的负极材料的锂电池。 负极材料含有0.05〜20质量％的碳纤维和0.1〜6.0质量％的苯乙烯 - 丁二烯橡胶形成的粘合剂，还可以含有0.3〜3质量％的羧甲基纤维素等增稠剂 ％。

公开(公告)号：US08388922B2

公开(公告)日：2013-03-05

申请号：US13089588

申请日：2011-04-19

申请人： Chiaki Sotowa ,  Masataka Takeuchi ,  Hidekazu Mori ,  Masahiro Yamakawa

发明人： Chiaki Sotowa ,  Masataka Takeuchi ,  Hidekazu Mori ,  Masahiro Yamakawa

IPC分类号： H01M4/04 ,  H01M4/583 ,  H01M4/62

CPC分类号： H01M4/0433 ,  H01M4/133 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M4/661 ,  H01M2004/021 ,  Y10T29/49108 ,  Y10T29/49115

摘要： The present invention relates to a negative electrode material for a lithium battery comprising a carbonaceous negative electrode active substance having a specific surface area of 1 m2/g or more, a binder formed of styrene-butadiene rubber and a carbon fiber having a fiber diameter of 1 to 1,000 nm; and to a lithium battery using the negative electrode material, which has excellent characteristics, i.e., low electrode resistance, high electrode strength, excellent electrolytic solution permeability, high energy density, and good high-speed charging/discharging performance. The negative electrode material contains carbon fiber in the amount of 0.05 to 20 mass % and the binder formed of styrene-butadiene rubber in 0.1 to 6.0 mass %, and may further contain a thickener such as carboxymethyl cellulose in the amount of 0.3 to 3 mass %.

摘要翻译： 本发明涉及锂电池用负极材料，其包含比表面积为1m 2 / g以上的碳质负极活性物质，由苯乙烯 - 丁二烯橡胶和纤维直径为 1〜1000nm; 并且使用具有优异的特性，即低电极电阻，高电极强度，优异的电解液渗透性，高能量密度和良好的高速充电/放电性能的负极材料的锂电池。 负极材料含有0.05〜20质量％的碳纤维和0.1〜6.0质量％的苯乙烯 - 丁二烯橡胶形成的粘合剂，还可以含有0.3〜3质量％的羧甲基纤维素等增稠剂 ％。

公开(公告)号：US08685362B2

公开(公告)日：2014-04-01

申请号：US13180608

申请日：2011-07-12

申请人： Masataka Takeuchi ,  Chiaki Sotowa

发明人： Masataka Takeuchi ,  Chiaki Sotowa

IPC分类号： D01F9/12

CPC分类号： H01M4/133 ,  H01M4/0433 ,  H01M4/139 ,  H01M4/364 ,  H01M4/587 ,  H01M4/62 ,  H01M4/621 ,  H01M4/661 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T428/2971

摘要： The invention relates to an anode for lithium secondary battery comprising vapor grown carbon fiber uniformly dispersed without forming an agglomerate of 10 μm or larger in an anode active material using natural graphite or artificial graphite, which anode is excellent in long cycle life and large current characteristics. Composition used for production for the anode can be produced, for example, by mixing a thickening agent solution containing an anode active material, a thickening agent aqueous solution and styrene butadiene rubber as binder with a composition containing carbon fiber dispersed in a thickening agent with a predetermined viscosity or by mixing an anode active material with vapor grown carbon fiber in dry state and then adding polyvinylidene difluoride thereto.

摘要翻译： 本发明涉及一种锂二次电池用阳极，其包括使用天然石墨或人造石墨在阳极活性物质中形成均匀分散的气相生长碳纤维，而阳极活性物质的长周期性优异，电流特性大 。 用于阳极生产的组合物可以例如通过将含有负极活性物质，增稠剂水溶液和丁苯橡胶作为粘合剂的增稠剂溶液与分散在增稠剂中的含碳纤维的组合物混合， 通过将阳极活性材料与干燥状态下的气相生长碳纤维混合，然后向其中加入聚偏二氟乙烯。

公开(公告)号：US20110269016A1

公开(公告)日：2011-11-03

申请号：US13180608

申请日：2011-07-12

申请人： Masataka TAKEUCHI ,  Chiaki Sotowa

发明人： Masataka TAKEUCHI ,  Chiaki Sotowa

IPC分类号： H01M4/583 ,  H01B1/24 ,  H01M4/60 ,  B82Y30/00

CPC分类号： H01M4/133 ,  H01M4/0433 ,  H01M4/139 ,  H01M4/364 ,  H01M4/587 ,  H01M4/62 ,  H01M4/621 ,  H01M4/661 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T428/2971

摘要： The invention relates to an anode for lithium secondary battery comprising vapor grown carbon fiber uniformly dispersed without forming an agglomerate of 10 μm or larger in an anode active material using natural graphite or artificial graphite, which anode is excellent in long cycle life and large current characteristics. Composition used for production for the anode can be produced, for example, by mixing a thickening agent solution containing an anode active material, a thickening agent aqueous solution and styrene butadiene rubber as binder with a composition containing carbon fiber dispersed in a thickening agent with a predetermined viscosity or by mixing an anode active material with vapor grown carbon fiber in dry state and then adding polyvinylidene difluoride thereto.

摘要翻译： 本发明涉及一种锂二次电池用阳极，其包括使用天然石墨或人造石墨在阳极活性物质中形成均匀分散的气相生长碳纤维，而阳极活性物质的长周期性优异，电流特性大 。 用于阳极生产的组合物可以例如通过将含有负极活性物质，增稠剂水溶液和丁苯橡胶作为粘合剂的增稠剂溶液与分散在增稠剂中的含碳纤维的组合物混合， 通过将阳极活性材料与干燥状态下的气相生长碳纤维混合，然后向其中加入聚偏二氟乙烯。

公开(公告)号：US20110236767A1

公开(公告)日：2011-09-29

申请号：US12673455

申请日：2008-08-08

申请人： Chiaki Sotowa ,  Akinori Sudoh ,  Masataka Takeuchi

发明人： Chiaki Sotowa ,  Akinori Sudoh ,  Masataka Takeuchi

IPC分类号： H01M4/583 ,  H01M4/1393 ,  F27D7/00 ,  B02C23/08 ,  H01M10/056

CPC分类号： H01M4/133 ,  H01M4/0471 ,  H01M4/1393 ,  H01M4/587 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/49108

摘要： Disclosed are a negative electrode for lithium secondary batteries, containing an active material (A) capable of absorbing/desorbing lithium ions and a binder (B), wherein the active material (A) is a carbon-based material obtained from at least one starting material selected from a group consisting of petroleum cokes and coal cokes and having a mean particle size of from 1 to 30 and a true density of from 1.90 to 2.00 g/cm3 and its use; and a method for producing a carbon-based negative electrode active material having a mean particle size of from 1 to 30 μm and a true density of from 1.90 to 2.00 g/cm3, the method comprising (a) a step of grinding at least one selected from a group consisting of petroleum cokes and coal cokes, (b) a step of controlling the particle size, and (c) a step of heat-treating in an inert gas atmosphere at 900 to 1900° C.

摘要翻译： 公开了含有能够吸收/解吸锂离子的活性物质（A）和粘合剂（B）的锂二次电池用负极，其中活性物质（A）为从至少一个起始物 选自石油焦炭和煤焦炭，平均粒度为1〜30，真密度为1.90〜2.00g / cm3的材料及其用途; 以及平均粒径为1〜30μm，真密度为1.90〜2.00g / cm 3的碳系负极活性物质的制造方法，其特征在于，包括：（a）将至少一种 选自由石油焦炭和煤焦炭组成的组，（b）控制粒径的步骤，（c）在惰性气体气氛中在900〜1900℃进行热处理的工序。

公开(公告)号：US08652361B2

公开(公告)日：2014-02-18

申请号：US12867414

申请日：2009-02-24

申请人： Karim Zaghib ,  Chiaki Sotowa ,  Patrick Charest ,  Masataka Takeuchi ,  Abdelbast Guerfi

发明人： Karim Zaghib ,  Chiaki Sotowa ,  Patrick Charest ,  Masataka Takeuchi ,  Abdelbast Guerfi

IPC分类号： H01B1/20 ,  H01M4/36 ,  H01M4/48

CPC分类号： H01M4/131 ,  H01B1/20 ,  H01M4/02 ,  H01M4/136 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/623 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

摘要： The invention relates to a composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which comprises co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers.

摘要翻译： 本发明涉及由碳涂复合氧化物，纤维状碳和粘结剂组成的复合电极材料。 所述材料通过包括共同研磨活性电极材料和纤维状碳的方法以及向共磨碎的混合物中加入粘合剂以降低混合物的粘度的方法制备。 纤维状碳优选为气相生长碳纤维。

公开(公告)号：US20120196193A1

公开(公告)日：2012-08-02

申请号：US13254408

申请日：2009-03-02

申请人： Chiaki Sotowa ,  Akinori Sudoh ,  Masataka Takeuchi ,  Kyung-hee Han ,  Jung-min Han ,  Jung-hun Oh

发明人： Chiaki Sotowa ,  Akinori Sudoh ,  Masataka Takeuchi ,  Kyung-hee Han ,  Jung-min Han ,  Jung-hun Oh

IPC分类号： H01M4/583 ,  H01M10/0569 ,  H01M10/052 ,  H01M4/04 ,  H01M4/64

CPC分类号： H01M4/587 ,  C01B32/20 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/052

摘要： The present invention provides composite graphite particles, which are useful for a negative electrode in a secondary battery having high capacitance, good charge-discharge characteristics and good charge-discharge cycle characteristics; and a paste for negative electrode, a negative electrode and a lithium secondary battery which use the composite graphite particles.The composite graphite particles of the present invention comprises a core material consisting of graphite having a interlayer distance d(002) of 0.337 nm or less in which the intensity ratio ID/IG (R value) between the peak intensity (ID) in a range of 1300 to 1400 cm−1 and the peak intensity (IG) in a range of 1580 to 1620 cm−1 as measured by Raman spectroscopy spectra is from 0.01 to 0.1 and a carbonaceous surface layer in which the intensity ratio ID/IG(R value) between the peak intensity (ID) in a range of 1300 to 1400 cm−1 and the peak intensity (IG) in a range of 1580 to 1620 cm−1 as measured by Raman scattering spectroscopy is 0.2 or higher; wherein the peak intensity ratio I110/I004 between the peak intensity (I110) of face (110) and the peak intensity (I004) of face (004) obtained by XRD measurement on the graphite crystal is 0.2 or higher when the particles are mixed with a binder and pressure-molded to a density of 1.55 to 1.65 g/cm3.

摘要翻译： 本发明提供了复合石墨粒子，其对具有高电容，良好的充放电特性和良好的充放电循环特性的二次电池中的负极是有用的; 以及使用该复合石墨粒子的负极，负极和锂二次电池用糊料。 本发明的复合石墨粒子包括由石墨构成的芯材，其中层间距离d（002）为0.337nm以下，其中峰强度（ID）在一定范围内的强度比ID / IG（R值） 为1300〜1400cm -1，通过拉曼光谱测定的1580〜1620cm -1范围内的峰强度（IG）为0.01〜0.1，强度比ID / IG（R 通过拉曼散射光谱法测定的在1300〜1400cm -1范围内的峰强度（ID）与1580〜1620cm -1范围内的峰强度（IG）之差为0.2以上; 其中，当将颗粒与石墨晶体的XRD测量获得的面（110）的峰强度（I110）和石墨晶体上的XRD测量获得的峰值强度（I004）之间的峰强度比I110 / I004为0.2或更高时， 粘合剂，并以1.55-1.65g / cm3的密度进行压塑。

公开(公告)号：US20110123858A1

公开(公告)日：2011-05-26

申请号：US13003851

申请日：2009-07-24

申请人： Karim Zaghib ,  Chiaki Sotowa ,  Abdelbast Guerfi ,  Masataka Takeuchi ,  Patrick Charest

发明人： Karim Zaghib ,  Chiaki Sotowa ,  Abdelbast Guerfi ,  Masataka Takeuchi ,  Patrick Charest

IPC分类号： H01M10/052 ,  B32B9/00 ,  B05D3/02 ,  H01M4/02 ,  H01M4/04

CPC分类号： H01M4/625 ,  C01D15/02 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/1397 ,  H01M4/362 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/623 ,  Y02E60/122 ,  Y10T428/292

摘要： The invention relates to a composite material comprising carbon fibers and complex oxide particles, wherein the carbon fibers and the complex oxide particles have a carbon coating on at least part of their surface, said carbon coating being a non powdery coating The material is prepared by a method comprising mixing a complex oxide or precursors thereof, an organic carbon precursor and carbon fibers, and subjecting the mixture to a heat treatment in an inert or reducing atmosphere for the decomposition of the precursors The material is useful as the cathode material in a battery

摘要翻译： 本发明涉及包含碳纤维和复合氧化物颗粒的复合材料，其中碳纤维和复合氧化物颗粒在其表面的至少一部分上具有碳涂层，所述碳涂层是非粉末涂层。该材料由 方法，包括混合复合氧化物或其前体，有机碳前体和碳纤维，并将混合物在惰性或还原气氛中进行热处理以分解前体。该材料可用作电池中的阴极材料

公开(公告)号：US20070202410A1

公开(公告)日：2007-08-30

申请号：US11660280

申请日：2005-08-12

申请人： Masataka Takeuchi ,  Chiaki Sotowa

发明人： Masataka Takeuchi ,  Chiaki Sotowa

IPC分类号： H01M4/62 ,  H01M4/58 ,  H01M4/48

CPC分类号： H01M4/625 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/021 ,  H01M2010/4292 ,  Y02E60/122

摘要： The present invention relates to a lithium battery positive electrode comprising an active substance that can occlude and release lithium ion, a carbon-based conductivity enhancer, and a binder, characterized in that the positive electrode contains the carbon-based conductivity enhancer in an amount of 0.1 to 2 mass % on the basis of the entire mass of the positive electrode, and that the carbon-based conductivity enhancer contains a carbon fiber having a mean fiber diameter of 1 to 200 nm, wherein the active substance that can occlude and release lithium ion is contained in an amount, as calculated from the true density of the active substance, of 70% by volume or more on the basis of the total volume of the positive electrode; and relates to a lithium battery using the a lithium battery positive electrode. The positive electrode obtained by the present invention has an excellent electrolyte permeability and electrolyte retention. Therefore, it is better adapted to high-density lithium battery.

摘要翻译： 本发明涉及一种锂电池正极，其包含可以吸留和释放锂离子的活性物质，碳系导电性增强剂和粘合剂，其特征在于，所述正极含有碳系导电性增强剂 基于整个正极的质量为0.1〜2质量％，碳基导电性增强剂含有平均纤维直径为1〜200nm的碳纤维，其中可以吸留和释放锂的活性物质 根据活性物质的真实密度计算出的离子的含量为70体积％以上，基于正极的总体积; 涉及使用锂电池正极的锂电池。 通过本发明获得的正极具有优异的电解质渗透性和电解质保留性。 因此，它更适合高密度锂电池。

公开(公告)号：US09531008B2

公开(公告)日：2016-12-27

申请号：US11660280

申请日：2005-08-12

申请人： Masataka Takeuchi ,  Chiaki Sotowa

发明人： Masataka Takeuchi ,  Chiaki Sotowa

IPC分类号： H01M4/62 ,  H01M4/58 ,  H01M4/48 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/02 ,  H01M10/42

CPC分类号： H01M4/625 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/021 ,  H01M2010/4292 ,  Y02E60/122

摘要： The present invention relates to a lithium battery positive electrode comprising an active substance that can occlude and release lithium ion, a carbon-based conductivity enhancer, and a binder, characterized in that the positive electrode contains the carbon-based conductivity enhancer in an amount of 0.1 to 2 mass % on the basis of the entire mass of the positive electrode, and that the carbon-based conductivity enhancer contains a carbon fiber having a mean fiber diameter of 1 to 200 nm, wherein the active substance that can occlude and release lithium ion is contained in an amount, as calculated from the true density of the active substance, of 70% by volume or more on the basis of the total volume of the positive electrode; and relates to a lithium battery using the a lithium battery positive electrode.The positive electrode obtained by the present invention has an excellent electrolyte permeability and electrolyte retention. Therefore, it is better adapted to high-density lithium battery.

摘要翻译： 通过本发明获得的正极具有优异的电解质渗透性和电解质保留性。 因此，它更适合高密度锂电池。