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1. 发明授权

US09028711B2 Negative electrode material for a nonaqueous electrolyte secondary battery and a method for its manufacture 有权
标题翻译：非水电解质二次电池用负极材料及其制造方法
公开(公告)号：US09028711B2
公开(公告)日：2015-05-12
申请号：US13642284
申请日：2011-04-25
申请人： Noriyuki Negi , Tatsuo Nagata , Sukeyoshi Yamamoto
发明人： Noriyuki Negi , Tatsuo Nagata , Sukeyoshi Yamamoto
IPC分类号： H01M4/88 , H01M4/36 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/62 , C22C1/00 , C22C13/00 , H01M10/0525
CPC分类号： H01M4/364 , C22C1/00 , C22C13/00 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/387 , H01M4/622 , H01M4/625 , H01M10/0525 , Y02E60/122 , Y02P70/54
摘要： An inexpensive negative electrode material for a nonaqueous electrolyte secondary battery includes three types of powder materials: alloy material A; alloy material B; and a conductive material. Alloy material A includes a CoSn2 structure containing Co, Sn, and Fe and has an Sn content of at least 70.1 mass % and less than 82.0 mass %. Alloy material B includes Co3Sn2 and has a lower discharge capacity than alloy material A. The proportion RB of the mass of alloy material B based on the total mass of alloy material A and B is greater than 5.9% and less than 27.1%. The content of the conductive material is at least 7 mass % and at most 20 mass % based on the total mass of alloy material A and B, and the conductive material. The exotherm starting temperature for the negative electrode material is less than 375.4° C.
摘要翻译：廉价的非水电解质二次电池用负极材料包括三种类型的粉末材料：合金材料A; 合金材料B; 和导电材料。合金材料A包括含有Co，Sn和Fe的CoSn2结构，并且具有至少70.1质量％且小于82.0质量％的Sn含量。合金材料B包括Co 3 Sn 2，并且具有比合金材料A更低的放电容量。合金材料B的质量比基于合金材料A和B的总质量的比例RB大于5.9％且小于27.1％。导电材料的含量相对于合金材料A和B的总质量和导电材料为至少7质量％且至多20质量％。负极材料的放热起始温度小于375.4℃

2. 发明申请

US20130207049A1 Negative Electrode Material for a Nonaqueous Electrolyte Secondary Battery and a Method for Its Manufacture 有权
标题翻译：一种非水电解质二次电池用负极材料及其制造方法
公开(公告)号：US20130207049A1
公开(公告)日：2013-08-15
申请号：US13642284
申请日：2011-04-25
申请人： Noriyuki Negi , Tatsuo Nagata , Sukeyoshi Yamamoto
发明人： Noriyuki Negi , Tatsuo Nagata , Sukeyoshi Yamamoto
IPC分类号： H01M4/36
CPC分类号： H01M4/364 , C22C1/00 , C22C13/00 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/387 , H01M4/622 , H01M4/625 , H01M10/0525 , Y02E60/122 , Y02P70/54
摘要： A negative electrode material according to the present invention which is provided as an inexpensive negative electrode material for a nonaqueous electrolyte secondary battery and which suppresses the amount of expensive Co which is used contains three types of powder materials in the form of alloy material A, alloy material B, and a conductive material. Alloy material A comprises an alloy having a CoSn2 structure containing Co, Sn, and Fe and having an Sn content of at least 70.1 mass % and less than 82.0 mass %. Alloy material B comprises Co3Sn2 and has a lower discharge capacity than alloy material A, and the proportion RB of the mass of alloy material B based on the total mass of alloy material A and alloy material B is greater than 5.9% and less than 27.1%. The content of the conductive material is at least 7 mass % and at most 20 mass % based on the total mass of alloy material A, alloy material B, and the conductive material. The exotherm starting temperature determined by differential scanning calorimetry for this negative electrode material is less than 375.4° C.
摘要翻译：作为廉价的非水电解质二次电池用负极材料提供的本发明的负极材料，其抑制所使用的昂贵的Co的量含有三种合金材料A，合金的形式的粉末材料材料B和导电材料。合金材料A包括具有Co，Sn和Fe的CoSn2结构并且Sn含量为至少70.1质量％且小于82.0质量％的合金。合金材料B包括Co 3 Sn 2，并且具有比合金材料A更低的放电容量，并且合金材料B的质量比例基于合金材料A和合金材料B的总质量的比例大于5.9％且小于27.1％。导电材料的含量相对于合金材料A，合金材料B和导电材料的总质量为7质量％以上20质量％以下。通过差示扫描量热法测定的该负极材料的放热起始温度小于375.4℃

3. 发明授权

US08591765B2 Negative electrode material for nonaqueous electrolyte secondary batteries and manufacturing method thereof 失效
标题翻译：非水电解质二次电池用负极材料及其制造方法
公开(公告)号：US08591765B2
公开(公告)日：2013-11-26
申请号：US13531930
申请日：2012-06-25
申请人： Noriyuki Negi , Tatsuo Nagata , Akihiko Saguchi
发明人： Noriyuki Negi , Tatsuo Nagata , Akihiko Saguchi
IPC分类号： H01M4/88
CPC分类号： H01M4/38 , B22F2998/00 , C22C1/0483 , C22C1/10 , C22C13/00 , H01M4/134 , H01M4/364 , H01M4/387 , H01M10/052 , B22F9/04
摘要： The present invention provides a negative electrode material for a nonaqueous electrolyte secondary battery which can improve the cycle properties of a lithium ion secondary battery and a method for manufacturing the negative electrode material. The negative electrode material comprises at least two types of powdery alloy materials A and B in which powdery alloy material A contains Co, Sn, and Fe and does not contain Ti and powdery alloy material B contains Fe, Ti, and Sn, and the proportion of the mass of powdery alloy material B to the sum of the mass of powdery alloy material A and the mass of powdery alloy material B is at least 10 mass % and at most 30 mass %.
摘要翻译：本发明提供一种能够提高锂离子二次电池的循环性能的非水电解质二次电池用负极材料及负极材料的制造方法。负极材料包括至少两种粉末合金材料A和B，其中粉末状合金材料A含有Co，Sn和Fe并且不含Ti，粉末合金材料B含有Fe，Ti和Sn，并且比例粉末状合金材料B的质量与粉末状合金材料A的质量和粉末状合金材料B的质量之和为10质量％以上且30质量％以下。

4. 发明申请

US20140093781A1 Modified Natural Graphite Particles 审中-公开
标题翻译：改性天然石墨颗粒
公开(公告)号：US20140093781A1
公开(公告)日：2014-04-03
申请号：US14110240
申请日：2012-04-03
申请人： Katsuhiro Nishihara , Hiroshi Yamamoto , Tatsuo Nagata , Noriyuki Negi , Tooru Fujiwara
发明人： Katsuhiro Nishihara , Hiroshi Yamamoto , Tatsuo Nagata , Noriyuki Negi , Tooru Fujiwara
IPC分类号： H01M4/587
CPC分类号： H01M4/587 , C01B32/20 , C01P2006/10 , C01P2006/11 , C01P2006/19 , H01M4/133 , H01M4/366 , H01M10/052
摘要： A modified natural graphite material which provides a negative plate having improved adhesion between a negative electrode mixture and a current collector has a circularity of at least 0.92 and at most 1.0 and an incident angle dependence S60/0 of the peak intensity ratio of at least 0.5 and at most 0.7 as determined by measurement of C K-edge X-ray absorption spectra using synchrotron radiation as an excitation source. It preferably satisfies at least one of the following conditions: an absolute specific gravity of at least 2.25 (g/cm3), a tap density of at least 1.0 g/cm3 and at most 1.4 g/cm3, and linseed oil absorption of at least 20 cm3/100 g and at most 50 cm3/100 g. A carbonaceous material may adhere to at least a portion of the surface of the graphite particles.
摘要翻译：提供具有改善的负极混合物和集电体之间粘附性的负极板的改性天然石墨材料具有至少0.92至多1.0的圆形度，峰强度比的入射角依赖性S60 / 0至少为0.5 并且通过使用同步加速器辐射作为激发源的C K边缘X射线吸收光谱的测量来确定最多为0.7。它优选满足以下条件中的至少一个：绝对比重至少为2.25（g / cm 3），振实密度为至少1.0g / cm 3和至多1.4g / cm 3，并且亚麻籽油吸收至少 20cm 3 / 100g和至多50cm 3 / 100g。碳质材料可以粘附到石墨颗粒的表面的至少一部分上。

5. 发明申请

US20130130117A1 Modified Natural Graphite Particle and Method for Producing the Same 审中-公开
标题翻译：改性天然石墨颗粒及其制备方法
公开(公告)号：US20130130117A1
公开(公告)日：2013-05-23
申请号：US13638250
申请日：2011-03-28
申请人： Hiroshi Yamamoto , Tatsuo Nagata , Katsuhiro Nishihara , Noriyuki Negi , Akihiro Yauchi , Tooru Fujiwara
发明人： Hiroshi Yamamoto , Tatsuo Nagata , Katsuhiro Nishihara , Noriyuki Negi , Akihiro Yauchi , Tooru Fujiwara
IPC分类号： H01M4/133 , C01B31/04 , H01M4/04 , H01M4/1393
CPC分类号： H01M4/133 , C01B32/20 , C01P2006/10 , C01P2006/11 , C01P2006/19 , H01M4/0402 , H01M4/1393 , H01M4/587
摘要： Modified natural graphite particles intended for forming a negative electrode material for a nonaqueous electrolyte secondary battery are characterized by having a circularity of at least 0.93 and at most 1.0 and a surface roughness of at most 1.5% with respect to the length of the particles. These modified natural graphite particles are obtained by a manufacturing method including a step of applying an impact force to natural graphite particles for pulverization and spheroidization to obtain intermediate particles having a circularity of at least 0.93 and at most 1.0, and a step of carrying out surface smoothing of the resulting intermediate particles by mechanical grinding treatment to obtain the modified natural graphite particles.
摘要翻译：用于形成非水电解质二次电池用负极材料的改性天然石墨粒子的特征在于，相对于粒子的长度，其圆形度为至少0.93，最多为1.0，表面粗糙度为1.5％以下。这些改性天然石墨颗粒通过包括以下步骤获得的制造方法，该方法包括对用于粉碎和球化的天然石墨颗粒施加冲击力以获得圆形度为至少0.93至多1.0的中间颗粒的步骤，以及执行表面通过机械研磨处理使得到的中间粒子平滑化，得到改性天然石墨粒子。

6. 发明授权

US06576369B1 Graphite powder suitable for negative electrode material of lithium ion secondary batteries 有权
标题翻译：石墨粉适用于锂离子二次电池的负极材料
公开(公告)号：US06576369B1
公开(公告)日：2003-06-10
申请号：US09138561
申请日：1998-08-24
申请人： Koji Moriguchi , Mitsuharu Yonemura , Kazuhito Kamei , Noriyuki Negi , Masaru Abe , Hideya Kaminaka
发明人： Koji Moriguchi , Mitsuharu Yonemura , Kazuhito Kamei , Noriyuki Negi , Masaru Abe , Hideya Kaminaka
IPC分类号： C01B3104
CPC分类号： H01M4/583 , C01B32/20 , C01P2002/60 , C01P2006/12 , C01P2006/40 , H01M4/133 , H01M4/622 , H01M4/623 , H01M6/10 , H01M10/0525
摘要： A graphite powder has surface closed-end structures in which the graphite c-plane layers of the graphite layer crystal lattices have closed-ends on the surface of the graphite powder by linking the ends of one or more pairs of the c-plane layers, leaving interstices which are open on the surface of the graphite. The number of open interstices is at least 100 and at most 1500 per micrometer in a c-axis direction of the graphite. Preferably, the graphite powder has a specific surface area of 1.0 m2/g or less. Such a graphite powder can be prepared either by graphitizing a carbon material, which has been pulverized at a high speed under well-controlled conditions before and/or after the carbonization, or by subjecting a carbon material, which has been pulverized under well-controlled conditions before and/or after the carbonization, to graphitization and then to oxidative heat treatment at a temperature of 600-800° C. and finally to heat treatment at a temperature of 800° C. or higher in an inert gas. The graphite powder can be used to produce negative electrodes of lithium ion secondary batteries having a high discharge capacity of at least 320 mAh/g and a high charge/discharge coulombic efficiency of at least 90%.
摘要翻译：石墨粉末具有表面封闭端结构，其中石墨层晶格的石墨c面层通过连接一对或多对c面层的端部而在石墨粉末的表面上具有封闭端，留下在石墨表面开放的间隙。在石墨的c轴方向上，开口间隙的数量为至少100个，最高为1500微米。优选石墨粉的比表面积为1.0m 2 / g以下。这样的石墨粉末可以通过在碳化之前和/或之后在良好控制的条件下高速粉碎的碳材料进行石墨化，或者通过将被粉碎的碳材料进行良好控制在碳化之前和/或之后的条件进行石墨化，然后在600-800℃的温度下进行氧化热处理，最后在惰性气体中在800℃以上的温度下进行热处理。该石墨粉末可用于制造具有至少320mAh / g的高放电容量和高充放电库仑效率至少为90％的锂离子二次电池的负极。

7. 发明授权

US06881518B2 Process for manufacture of negative electrode material for a non-aqueous electrolyte secondary battery 有权
标题翻译：非水电解质二次电池用负极材料的制造方法
公开(公告)号：US06881518B2
公开(公告)日：2005-04-19
申请号：US10355051
申请日：2003-01-31
申请人： Hideya Kaminaka , Masaru Abe , Noriyuki Negi , Yoshiaki Nitta , Harunari Shimamura , Kazuhiro Okamura
发明人： Hideya Kaminaka , Masaru Abe , Noriyuki Negi , Yoshiaki Nitta , Harunari Shimamura , Kazuhiro Okamura
IPC分类号： H01M4/02 , H01M4/04 , H01M4/13 , H01M4/133 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/58 , H01M4/583 , H01M4/86
CPC分类号： H01M4/58 , B22F2009/041 , B22F2998/00 , H01M4/02 , H01M4/0454 , H01M4/13 , H01M4/133 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M4/383 , H01M4/583 , H01M2004/8684 , H01M2300/0017 , H01M2300/0082 , H01M2300/0085 , Y10T29/49108 , B22F9/008 , B22F9/04
摘要： A negative electrode material for a nonaqueous electrolyte secondary battery having a high discharge capacity and a good cycle life is made from alloy particles having an average particle diameter of 0.1-50 μm and including Si phase grains 40 and a phase of a solid solution or an intermetallic compound of Si and other element selected from Group 2A elements, transition elements, Group 3B elements, and Group 4B elements from the long form periodic table (for example, an NiSi2 phase 42 and an [NiSi2+NiSi] phase 41) at least partially enveloping the Si phase grains. 5-99 wt % of this material is Si phase grains. The alloy particles can be manufactured by rapid solidification (such as atomization or roller quenching) of a melt including Si and the other element, or by adhering the other element to Si powder by electroless plating or mechanical alloying and then performing heat treatment. Even if rapid solidification is carried out, a negative electrode material having a good discharge capacity and cycle life is obtained without heat treatment.
摘要翻译：由平均粒径为0.1-50μm的合金粒子制成具有高放电容量和良好的循环寿命的非水电解质二次电池用负极材料，其包含Si相粒子40，固溶相或选自元素周期表（例如，NiSi 2相42和[NiSi 2Si + NiSi]相41）至少部分包围Si相晶粒。该材料的5-99重量％是Si相晶粒。可以通过包括Si和另一种元素的熔体的快速凝固（例如雾化或辊筒淬火）制造合金颗粒，或者通过化学镀或机械合金化将另一种元素粘附到Si粉末上，然后进行热处理。即使进行快速凝固，也可以得到没有热处理的具有良好的放电容量和循环寿命的负极材料。

8. 发明授权

US06764767B2 Graphite powders suited for negative electrode material of lithium ion secondary battery 失效
标题翻译：适用于锂离子二次电池负极材料的石墨粉
公开(公告)号：US06764767B2
公开(公告)日：2004-07-20
申请号：US09292834
申请日：1999-04-16
申请人： Koji Moriguchi , Mitsuhara Yonemura , Kazuhito Kamei , Masaru Abe , Hideya Kaminaka , Noriyuki Negi , Atsuo Omaru , Masayuki Nagamine
发明人： Koji Moriguchi , Mitsuhara Yonemura , Kazuhito Kamei , Masaru Abe , Hideya Kaminaka , Noriyuki Negi , Atsuo Omaru , Masayuki Nagamine
IPC分类号： C01B3104
CPC分类号： H01M10/0525 , C01B32/20 , C01P2002/60 , C01P2002/72 , C01P2006/80 , H01M4/133 , H01M4/587 , H01M2004/021 , Y10T428/30
摘要： A graphite powder suitable for a negative electrode material of a lithium ion secondary battery which assures a high discharging capacity not lower than 320 mAh/g is to be manufactured at a lower cost. Specifically, a graphite powder containing 0.01 to 5.0 wt % of boron and having a looped closure structure at an end of a graphite c-planar layer on the surface of a powder, with the density of the interstitial planar sections between neighboring closure structures being not less than 100/&mgr;m and not more than 1500/&mgr;m, and with d002 being preferably not larger than 3.3650 Å, is manufactured by (1) heat-treating a carbon material pulverized at an elevated speed before or after carbonization for graphization at temperature exceeding 1500° C. or by (2) heat-treating the carbon material pulverized before or after carbonization at a temperature exceeding 1500° C. for graphization and subsequently further heat-treating the graphized material at a temperature exceeding a temperature of the oxidating heat treatment and the heat treatment in the inert gas.
摘要翻译：以更低的成本制造适合于确保高放电容量不低于320mAh / g的锂离子二次电池的负极材料的石墨粉末。具体地说，在粉末表面上，在石墨c平面层的端部含有0.01〜5.0重量％的硼并且具有环状封闭结构的石墨粉末，相邻闭合结构之间的间隙平面部分的密度不是小于100 /小时且不超过1500 / mum，d002优选不大于3.3650，通过以下方法制造：（1）在碳化之前或之后以高速粉碎的碳材料进行热处理，以在超过或者（2）在碳化之前或之后粉碎的碳材料在超过1500℃的温度下进行热处理，以进行石墨化，随后在超过氧化热处理温度的温度下进一步热处理石墨化材料并在惰性气体中进行热处理。

9. 发明授权

US07659033B2 Graphite powders suited for negative electrode material of lithium ion secondary battery 失效
标题翻译：适用于锂离子二次电池负极材料的石墨粉
公开(公告)号：US07659033B2
公开(公告)日：2010-02-09
申请号：US11686204
申请日：2007-03-14
申请人： Koji Moriguchi , Mitsuhara Yonemura , Kazuhito Kamei , Masaru Abe , Hideya Kaminaka , Noriyuki Negi , Atsuo Omaru , Masayuki Nagamine
发明人： Koji Moriguchi , Mitsuhara Yonemura , Kazuhito Kamei , Masaru Abe , Hideya Kaminaka , Noriyuki Negi , Atsuo Omaru , Masayuki Nagamine
IPC分类号： H01M4/58 , C01B31/04
CPC分类号： H01M10/0525 , C01B32/20 , C01P2002/60 , C01P2002/72 , C01P2006/80 , H01M4/133 , H01M4/587 , H01M2004/021 , Y10T428/30
摘要： A graphite powder suitable for a negative electrode material of a lithium ion secondary battery which assures a high discharging capacity not lower than 320 mAh/g is to be manufactured at a lower cost. Specifically, a graphite powder containing 0.01 to 5.0 wt % of boron and having a looped closure structure at an end of a graphite c-planar layer on the surface of a powder, with the density of the interstitial planar sections between neighboring closure structures being not less than 100/μm and not more than 1500/μm, and with d002 being preferably not larger than 3.3650 Å, is manufactured by (1) heat-treating a carbon material pulverized at an elevated speed before or after carbonization for graphization at temperature exceeding 1500° C. or by (2) heat-treating the carbon material pulverized before or after carbonization at a temperature exceeding 1500° C. for graphization and subsequently further heat-treating the graphized material at a temperature exceeding a temperature of the oxidating heat treatment and the heat treatment in the inert gas.
摘要翻译：以更低的成本制造适合于确保高放电容量不低于320mAh / g的锂离子二次电池的负极材料的石墨粉末。具体地说，在粉末表面上，在石墨c平面层的端部含有0.01〜5.0重量％的硼并且具有环状封闭结构的石墨粉末，相邻闭合结构之间的间隙平面部分的密度不是小于100 /小时且不超过1500 / mum，d002优选不大于3.3650，通过以下方法制造：（1）在碳化之前或之后以高速粉碎的碳材料进行热处理，以在超过或者（2）在碳化之前或之后粉碎的碳材料在超过1500℃的温度下进行热处理，以进行石墨化，随后在超过氧化热处理温度的温度下进一步热处理石墨化材料并在惰性气体中进行热处理。

10. 发明申请

US20070154812A1 Graphite powders suited for negative electrode material of lithium ion secondary battery 失效
标题翻译：适用于锂离子二次电池负极材料的石墨粉
公开(公告)号：US20070154812A1
公开(公告)日：2007-07-05
申请号：US11686204
申请日：2007-03-14
申请人： Koji Moriguchi , Mitsuhara Yonemura , Kazuhito Kamei , Masaru Abe , Hideya Kaminaka , Noriyuki Negi , Atsuo Omaru , Masayuki Nagamine
发明人： Koji Moriguchi , Mitsuhara Yonemura , Kazuhito Kamei , Masaru Abe , Hideya Kaminaka , Noriyuki Negi , Atsuo Omaru , Masayuki Nagamine
IPC分类号： H01M4/58 , C01B31/04
CPC分类号： H01M10/0525 , C01B32/20 , C01P2002/60 , C01P2002/72 , C01P2006/80 , H01M4/133 , H01M4/587 , H01M2004/021 , Y10T428/30
摘要： A graphite powder suitable for a negative electrode material of a lithium ion secondary battery which assures a high discharging capacity not lower than 320 mAh/g is to be manufactured at a lower cost. Specifically, a graphite powder containing 0.01 to 5.0 wt % of boron and having a looped closure structure at an end of a graphite c-planar layer on the surface of a powder, with the density of the interstitial planar sections between neighboring closure structures being not less than 100/μm and not more than 1500/μm, and with d002 being preferably not larger than 3.3650 Å, is manufactured by (1) heat-treating a carbon material pulverized at an elevated speed before or after carbonization for graphization at temperature exceeding 1500° C. or by (2) heat-treating the carbon material pulverized before or after carbonization at a temperature exceeding 1500° C. forgraphization and subsequently firterheat-treating the graphized material at a temperature exceeding a temperature of the oxidating heat treatnent and the heat treatment in the inert gas.
摘要翻译：以更低的成本制造适合于确保高放电容量不低于320mAh / g的锂离子二次电池的负极材料的石墨粉末。具体地说，在粉末表面上，在石墨c平面层的端部含有0.01〜5.0重量％的硼并且具有环状封闭结构的石墨粉末，相邻闭合结构之间的间隙平面部分的密度不是通过（1）在碳化之前或之后以高速粉碎的碳材料进行热处理，以在温度下进行石墨化，制造小于100 / mum且不大于1500 / mum，d 002优选不大于3.3650 超过1500℃，或者（2）在碳化之前或之后粉碎的碳材料在超过1500℃的温度下进行热处理，然后在超过氧化热处理温度的温度下对石墨化材料进行热处理，惰性气体中的热处理。

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