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：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：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：US20110026189A1

公开(公告)日：2011-02-03

申请号：US12762788

申请日：2010-04-19

申请人： Bingqing Wei ,  Charan Masarapu

发明人： Bingqing Wei ,  Charan Masarapu

IPC分类号： H01G9/004 ,  H01G9/00

CPC分类号： H01G9/058 ,  H01G9/155 ,  H01G11/36 ,  Y02E60/13 ,  Y02T10/7022 ,  Y10T29/417

摘要： A supercapacitor comprising a cathode, an anode, a first single-walled carbon nanotube (SWNT) film electrode adjacent the cathode, a second SWNT film electrode adjacent the anode, and separator disposed between the first and second electrodes. The SWNT film electrodes may be manufactured by a non-filtration process comprising depositing the SWNT film on a foil via CVD; separating the SWNT film from the foil; heating the SWNT film; treating the SWNT film with an acid solution; washing the SWNT film; and excising the electrodes from the SWNT film.

摘要翻译： 包括阴极，阳极，与阴极相邻的第一单壁碳纳米管（SWNT）膜电极，与阳极相邻的第二SWNT膜电极以及设置在第一和第二电极之间的隔离物的超级电容器。 SWNT薄膜电极可以通过非过滤方法制造，包括通过CVD沉积在膜上的SWNT薄膜; 将SWNT膜与箔分离; 加热SWNT膜; 用酸溶液处理SWNT膜; 洗涤SWNT膜; 并从SWNT膜中切出电极。

公开(公告)号：US08213157B2

公开(公告)日：2012-07-03

申请号：US12762788

申请日：2010-04-19

申请人： Bingqing Wei ,  Charan Masarapu

发明人： Bingqing Wei ,  Charan Masarapu

IPC分类号： H01G9/00

CPC分类号： H01G9/058 ,  H01G9/155 ,  H01G11/36 ,  Y02E60/13 ,  Y02T10/7022 ,  Y10T29/417

摘要： A supercapacitor comprising a cathode, an anode, a first single-walled carbon nanotube (SWNT) film electrode adjacent the cathode, a second SWNT film electrode adjacent the anode, and separator disposed between the first and second electrodes. The SWNT film electrodes may be manufactured by a non-filtration process comprising depositing the SWNT film on a foil via CVD; separating the SWNT film from the foil; heating the SWNT film; treating the SWNT film with an acid solution; washing the SWNT film; and excising the electrodes from the SWNT film.

摘要翻译： 包括阴极，阳极，与阴极相邻的第一单壁碳纳米管（SWNT）膜电极，与阳极相邻的第二SWNT膜电极以及设置在第一和第二电极之间的隔离物的超级电容器。 SWNT薄膜电极可以通过非过滤方法制造，包括通过CVD沉积在膜上的SWNT薄膜; 将SWNT膜与箔分离; 加热SWNT膜; 用酸溶液处理SWNT膜; 洗涤SWNT膜; 并从SWNT膜中切出电极。