公开(公告)号：US20130295439A1

公开(公告)日：2013-11-07

申请号：US13464034

申请日：2012-05-04

申请人： Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Yogesh Kumar Anguchamy ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

发明人： Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Yogesh Kumar Anguchamy ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

IPC分类号： H01M4/485 ,  H01M4/505 ,  H01M4/583 ,  H01B1/24 ,  H01M2/02 ,  H01M4/64 ,  B82Y30/00

CPC分类号： H01M4/582 ,  B82Y30/00 ,  H01B1/24 ,  H01M2/024 ,  H01M2/1646 ,  H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/386 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/446 ,  H01M2220/20

摘要： Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.

公开(公告)号：US09139441B2

公开(公告)日：2015-09-22

申请号：US13354096

申请日：2012-01-19

申请人： Yogesh Kumar Anguchamy ,  Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

发明人： Yogesh Kumar Anguchamy ,  Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

IPC分类号： H01M4/525 ,  C01B33/023 ,  H01M4/134 ,  H01M4/38 ,  B82Y30/00 ,  H01M4/36 ,  H01M4/505 ,  H01M4/62 ,  H01M10/052 ,  H01M4/02 ,  H01M10/42

CPC分类号： C01B33/023 ,  B82Y30/00 ,  H01M4/134 ,  H01M4/362 ,  H01M4/366 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  H01M2010/4292 ,  Y02E60/122 ,  Y02T10/7011

摘要： A porous silicon based material comprising porous crystalline elemental silicon formed by reducing silicon dioxide with a reducing metal in a heating process followed by acid etching is used to construct negative electrode used in lithium ion batteries. Gradual temperature heating ramp(s) with optional temperature steps can be used to perform the heating process. The porous silicon formed has a high surface area from about 10 m2/g to about 200 m2/g and is substantially free of carbon. The negative electrode formed can have a discharge specific capacity of at least 1800 mAh/g at rate of C/3 discharged from 1.5V to 0.005V against lithium with in some embodiments loading levels ranging from about 1.4 mg/cm2 to about 3.5 mg/cm2. In some embodiments, the porous silicon can be coated with a carbon coating or blended with carbon nanofibers or other conductive carbon material.

摘要翻译： 使用包含在加热过程中随后用酸蚀刻还原二氧化硅形成的多孔结晶元素硅的多孔硅基材料来构造用于锂离子电池的负极。 可以使用温度逐渐升温的温度梯度来进行加热过程。 形成的多孔硅具有约10m 2 / g至约200m 2 / g的高表面积，并且基本上不含碳。 形成的负极可以具有至少1800mAh / g的放电比容量，其相对于锂从1.5V至0.005V释放的C / 3的速率，在一些实施方案中负载水平为约1.4mg / cm 2至约3.5mg / cm2。 在一些实施例中，多孔硅可以涂覆有碳涂层或与碳纳米纤维或其它导电碳材料混合。

公开(公告)号：US09190694B2

公开(公告)日：2015-11-17

申请号：US12938951

申请日：2010-11-03

申请人： Herman A. Lopez ,  Yogesh Kumar Anguchamy ,  Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Subramanian Venkatachalam ,  Sujeet Kumar

发明人： Herman A. Lopez ,  Yogesh Kumar Anguchamy ,  Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Subramanian Venkatachalam ,  Sujeet Kumar

IPC分类号： H01M4/583 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

CPC分类号： H01M4/134 ,  C25F3/12 ,  H01M4/131 ,  H01M4/133 ,  H01M4/364 ,  H01M4/38 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/30 ,  Y02E60/122

摘要： High capacity silicon based anode active materials are described for lithium ion batteries. These materials are shown to be effective in combination with high capacity lithium rich cathode active materials. Supplemental lithium is shown to improve the cycling performance and reduce irreversible capacity loss for at least certain silicon based active materials. In particular silicon based active materials can be formed in composites with electrically conductive coatings, such as pyrolytic carbon coatings or metal coatings, and composites can also be formed with other electrically conductive carbon components, such as carbon nanofibers and carbon nanoparticles. Additional alloys with silicon are explored.

摘要翻译： 锂离子电池描述了大容量硅基阳极活性材料。 这些材料显示与高容量富锂正极活性材料组合有效。 补充锂显示出改善循环性能并减少至少某些基于硅的活性材料的不可逆容量损失。 特别地，硅基活性材料可以与导电涂层（例如热解碳涂层或金属涂层）的复合材料形成，并且复合材料也可以与其它导电碳组分如碳纳米纤维和碳纳米颗粒一起形成。 探索了具有硅的附加合金。

公开(公告)号：US20130189575A1

公开(公告)日：2013-07-25

申请号：US13354096

申请日：2012-01-19

申请人： Yogesh Kumar Anguchamy ,  Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

发明人： Yogesh Kumar Anguchamy ,  Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

IPC分类号： H01M4/525 ,  H01M2/14 ,  H01M4/134 ,  H01M4/38 ,  H01M4/60 ,  H01M4/64 ,  C01B33/023 ,  B44C1/22 ,  H01M4/62 ,  H01M4/485 ,  B82Y30/00

CPC分类号： C01B33/023 ,  B82Y30/00 ,  H01M4/134 ,  H01M4/362 ,  H01M4/366 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  H01M2010/4292 ,  Y02E60/122 ,  Y02T10/7011

摘要： A porous silicon based material comprising porous crystalline elemental silicon formed by reducing silicon dioxide with a reducing metal in a heating process followed by acid etching is used to construct negative electrode used in lithium ion batteries. Gradual temperature heating ramp(s) with optional temperature steps can be used to perform the heating process. The porous silicon formed has a high surface area from about 10 m2/g to about 200 m2/g and is substantially free of carbon. The negative electrode formed can have a discharge specific capacity of at least 1800 mAh/g at rate of C/3 discharged from 1.5V to 0.005V against lithium with in some embodiments loading levels ranging from about 1.4 mg/cm2 to about 3.5 mg/cm2. In some embodiments, the porous silicon can be coated with a carbon coating or blended with carbon nanofibers or other conductive carbon material.

摘要翻译： 使用包含在加热过程中随后用酸蚀刻还原二氧化硅形成的多孔结晶元素硅的多孔硅基材料来构造用于锂离子电池的负极。 可以使用温度逐渐升温的温度梯度来进行加热过程。 形成的多孔硅具有约10m 2 / g至约200m 2 / g的高表面积，并且基本上不含碳。 形成的负极可以具有至少1800mAh / g的放电比容量，其相对于锂从1.5V至0.005V释放的C / 3的速率，在一些实施方案中负载水平为约1.4mg / cm 2至约3.5mg / cm2。 在一些实施例中，多孔硅可以涂覆有碳涂层或与碳纳米纤维或其它导电碳材料混合。

公开(公告)号：US10553871B2

公开(公告)日：2020-02-04

申请号：US13464034

申请日：2012-05-04

申请人： Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Yogesh Kumar Anguchamy ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

发明人： Charan Masarapu ,  Haixia Deng ,  Yongbong Han ,  Yogesh Kumar Anguchamy ,  Subramanian Venkatachalam ,  Sujeet Kumar ,  Herman A. Lopez

IPC分类号： H01M4/485 ,  H01M4/58 ,  H01B1/24 ,  H01M4/505 ,  H01M2/16 ,  H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/44 ,  B82Y30/00 ,  H01M2/02

摘要： Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.

公开(公告)号：US20110111294A1

公开(公告)日：2011-05-12

申请号：US12938951

申请日：2010-11-03

申请人： Heman A. Lopez ,  Yogesh Kumar Anguchamy ,  Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Subramanian Venkatachalam ,  Sujeet Kumar

发明人： Heman A. Lopez ,  Yogesh Kumar Anguchamy ,  Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Subramanian Venkatachalam ,  Sujeet Kumar

IPC分类号： H01M4/583 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  B82Y30/00

CPC分类号： H01M4/134 ,  C25F3/12 ,  H01M4/131 ,  H01M4/133 ,  H01M4/364 ,  H01M4/38 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/30 ,  Y02E60/122

摘要： High capacity silicon based anode active materials are described for lithium ion batteries. These materials are shown to be effective in combination with high capacity lithium rich cathode active materials. Supplemental lithium is shown to improve the cycling performance and reduce irreversible capacity loss for at least certain silicon based active materials. In particular silicon based active materials can be formed in composites with electrically conductive coatings, such as pyrolytic carbon coatings or metal coatings, and composites can also be formed with other electrically conductive carbon components, such as carbon nanofibers and carbon nanoparticles. Additional alloys with silicon are explored.

摘要翻译： 锂离子电池描述了大容量硅基阳极活性材料。 这些材料显示与高容量富锂正极活性材料组合有效。 补充锂显示出改善循环性能并减少至少某些基于硅的活性材料的不可逆容量损失。 特别地，硅基活性材料可以与导电涂层（例如热解碳涂层或金属涂层）的复合材料形成，并且复合材料也可以与其它导电碳组分如碳纳米纤维和碳纳米颗粒一起形成。 探索了具有硅的附加合金。

公开(公告)号：US09601228B2

公开(公告)日：2017-03-21

申请号：US13108708

申请日：2011-05-16

申请人： Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Yogesh Kumar Anguchamy ,  Herman A. Lopez ,  Sujeet Kumar

发明人： Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Yogesh Kumar Anguchamy ,  Herman A. Lopez ,  Sujeet Kumar

IPC分类号： H01M4/36 ,  H01B1/18 ,  H01M10/056 ,  H01M4/48 ,  H01M4/485 ,  H01M4/583 ,  H01M4/62 ,  B82Y30/00 ,  H01B1/12 ,  H01M4/131 ,  H01M4/134 ,  H01M10/052 ,  H01M4/38 ,  H01M4/02

CPC分类号： H01M4/131 ,  H01B1/122 ,  H01M4/134 ,  H01M4/136 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/622 ,  H01M4/624 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/027

摘要： Silicon oxide based materials, including composites with various electrical conductive compositions, are formulated into desirable anodes. The anodes can be effectively combined into lithium ion batteries with high capacity cathode materials. In some formulations, supplemental lithium can be used to stabilize cycling as well as to reduce effects of first cycle irreversible capacity loss. Batteries are described with surprisingly good cycling properties with good specific capacities with respect to both cathode active weights and anode active weights.

公开(公告)号：US20120295155A1

公开(公告)日：2012-11-22

申请号：US13108708

申请日：2011-05-16

申请人： Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Yogesh Kumar Anguchamy ,  Herman A. Lopez ,  Sujeet Kumar

发明人： Haixia Deng ,  Yongbong Han ,  Charan Masarapu ,  Yogesh Kumar Anguchamy ,  Herman A. Lopez ,  Sujeet Kumar

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M10/056 ,  H01M4/583 ,  H01M4/48 ,  H01B1/18 ,  H01M4/485 ,  H01M4/62 ,  B82Y30/00

CPC分类号： H01M4/131 ,  H01B1/122 ,  H01M4/134 ,  H01M4/136 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/622 ,  H01M4/624 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/027

摘要： Silicon oxide based materials, including composites with various electrical conductive compositions, are formulated into desirable anodes. The anodes can be effectively combined into lithium ion batteries with high capacity cathode materials. In some formulations, supplemental lithium can be used to stabilize cycling as well as to reduce effects of first cycle irreversible capacity loss. Batteries are described with surprisingly good cycling properties with good specific capacities with respect to both cathode active weights and anode active weights.

摘要翻译： 包括具有各种导电组合物的复合材料的氧化硅基材料被配制成所需的阳极。 阳极可以有效地组合到具有高容量阴极材料的锂离子电池中。 在一些制剂中，补充锂可用于稳定循环以及减少第一循环不可逆容量损失的影响。 描述了具有令人惊奇的良好循环性能的电池，具有相对于阴极活性重量和阳极活性重量的良好的比容量。

公开(公告)号：US08394534B2

公开(公告)日：2013-03-12

申请号：US12869976

申请日：2010-08-27

申请人： Herman A. Lopez ,  Subramanian Venkatachalam ,  Deepak Kumaar Kandasamy Karthikeyan ,  Sujeet Kumar

发明人： Herman A. Lopez ,  Subramanian Venkatachalam ,  Deepak Kumaar Kandasamy Karthikeyan ,  Sujeet Kumar

IPC分类号： H01M4/13

CPC分类号： H01M4/366 ,  C01D15/08 ,  C01G45/1257 ,  C01G51/50 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/80 ,  C01P2006/10 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/056

摘要： Lithium rich and manganese rich lithium metal oxides are described that provide for excellent performance in lithium-based batteries. The specific compositions can be engineered within a specified range of compositions to provide desired performance characteristics. Selected compositions can provide high values of specific capacity with a reasonably high average voltage. Compositions of particular interest can be represented by the formula, xLi2MnO3.(1−x)LiNiu+ΔMnu−ΔCowAyO2. The compositions undergo significant first cycle irreversible changes, but the compositions cycle stably after the first cycle.

摘要翻译： 描述了富锂和富锰的锂金属氧化物，其在锂基电池中具有优异的性能。 特定组合物可以在指定范围的组合物内进行工程化以提供所需的性能特征。 所选组合物可以以相当高的平均电压提供较高的比容量值。 特别感兴趣的组合可以由下式表示：xLi2MnO3（1-x）LiNiu +＆Dgr; Mnu-＆Dgr; CowAyO2。 组合物经历显着的第一循环不可逆变化，但组合物在第一循环后稳定循环。

公开(公告)号：US08765306B2

公开(公告)日：2014-07-01

申请号：US12732520

申请日：2010-03-26

申请人： Shabab Amiruddin ,  Subramanian Venkatachalam ,  Herman A. Lopez ,  Sujeet Kumar

发明人： Shabab Amiruddin ,  Subramanian Venkatachalam ,  Herman A. Lopez ,  Sujeet Kumar

IPC分类号： H01M10/0525 ,  H01M4/525 ,  H01M4/583 ,  H01M10/44 ,  H02J7/00 ,  H01M4/505 ,  H01M4/587 ,  H01M4/04 ,  H01M4/131 ,  H01M10/058 ,  H01M10/0585

CPC分类号： H02J7/0075 ,  H01M4/0447 ,  H01M4/505 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/446 ,  Y02E60/122

摘要： Improved cycling of high voltage lithium ion batteries is accomplished through the use of a formation step that seems to form a more stable structure for subsequent cycling and through the improved management of the charge-discharge cycling. In particular, the formation charge for the battery can be performed at a lower voltage prior to full activation of the battery through a charge to the specified operational voltage of the battery. With respect to management of the charging and discharging of the battery, it has been discovered that for the lithium rich high voltage compositions of interest that a deeper discharge can preserve the cycling capacity at a greater number of cycles. Battery management can be designed to exploit the improved cycling capacity obtained with deeper discharges of the battery.

摘要翻译： 高压锂离子电池的改进循环是通过使用似乎形成用于随后循环的更稳定结构并通过改进的充放电循环管理的形成步骤来实现的。 特别地，电池的形成电荷可以在电池完全激活之前以较低的电压进行，通过电荷到电池的指定工作电压。 关于电池的充电和放电的管理，已经发现，对于感兴趣的富锂高压组合物，更深的放电可以在更多的循环数量下保持循环容量。 电池管理可以设计成利用电池更深的放电获得的改进的循环容量。