公开(公告)号：US5409868A

公开(公告)日：1995-04-25

申请号：US172195

申请日：1993-12-23

Applicant: Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

Inventor： Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

IPC: C04B35/58

CPC classification number: C04B35/58071 ,  C04B35/58028 ,  C04B35/581 ,  C04B35/583

Abstract: A composition is described for hard sintered ceramic articles having densities which are 97% or higher than the theoretical density. The composition contains up to 98.5 vol. % titanium diboride, 0-59 vol % aluminum nitride, 0-59 vol. % hexagonal boron nitride, 0-59 vol. % zirconium nitride, and in addition, zirconia, hafnia or ceria having particle size 0.7 .mu.m or less, in 1.5 vol. % and optionally, a sintering aid in less 2 vol. %. The mixture of the above components is further mixed and ground by ball-milling and vibro-milling in the presence of an aliphatic alcohol, cast into required shapes and sintered in an inert gas at temperatures below 1950.degree. C. The sintered ceramic articles obtained of this composition include ceramic cutting tool inserts, impact-resistant ceramic structures, nozzles, extrusion dies and ceramic evaporating boats.

Abstract translation: 对于密度为理论密度的97％以上的硬质烧结陶瓷制品， 该组合物含量高达98.5vol。 ％二硼化钛，0-59体积％氮化铝，0-59体积％ ％六方氮化硼，0-59体积％ ％的氮化锆，另外还有在1.5体积％的粒径为0.7μm以下的氧化锆，铪或二氧化铈。 ％和任选地，少于2体积的烧结助剂。 ％。 将上述组分的混合物进一步混合并在脂肪醇存在下通过球磨和振动研磨，铸成所需形状并在低于1950℃的温度下在惰性气体中烧结。烧结陶瓷制品 该组合物包括陶瓷切削工具刀片，耐冲击陶瓷结构，喷嘴，挤出模具和陶瓷蒸发船。

公开(公告)号：US06261722B1

公开(公告)日：2001-07-17

申请号：US09361977

申请日：1999-07-28

Applicant: Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

Inventor： Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

IPC: H01M618

CPC classification number: H01M4/62 ,  H01M4/621 ,  H01M4/625

Abstract: Lithium electrochemical cells and batteries are described having electron conductive additives in the form of a mixture of carbon fibres and fine carbon particles. The electron conductive additives are provided in a polymeric fluoride coating between the electrode and the current collector. A mixture of carbon fibres and fine carbon can also be admixed with the cathode-active component in the cathode.

Abstract translation: 锂电化学电池和电池被描述为具有碳纤维和细碳颗粒混合物形式的电子传导添加剂。 在电极和集电器之间的聚合物氟化物涂层中提供电子传导添加剂。 碳纤维和细碳的混合物也可以与阴极中的阴极活性组分混合。

公开(公告)号：US07033702B2

公开(公告)日：2006-04-25

申请号：US10933243

申请日：2004-09-03

Applicant: Sankar Dasgupta ,  James K. Jacobs ,  Rakesh Bhola

Inventor： Sankar Dasgupta ,  James K. Jacobs ,  Rakesh Bhola

IPC: H01M4/80

CPC classification number: H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M6/188 ,  H01M10/0525 ,  H01M10/0565 ,  Y10T29/49108 ,  Y10T29/49115

Abstract: A matted particulate electrode located between the current collector and a porous separator of a rechargeable lithium battery is described, which contains electro-active particles intermixed with pliable, solid, lithium ion conducting, polymer electrolyte filaments having adhesive surfaces. The electro-active particles and the optionally added electro-conductive carbon particles adhere to the tacky surface of the adhesively interlinking polymer electrolyte filaments. The matted particulate electrode is impregnated with an organic solution containing another lithium compound. In a second embodiment the porous separator is coated on at least one of its faces, with polymer electrolyte having an adhesive surface and made of the same polymer as the electrolyte filaments. The polymer electrolyte filaments in the matted layer may adhere to the coated surface of the separator. In addition the polymer coating is partially filling the pores of the porous electrolyte, but leaving sufficient space in the pores for the organic solution to penetrate the separator of the lithium battery.

公开(公告)号：US07588862B2

公开(公告)日：2009-09-15

申请号：US10799759

申请日：2004-03-15

Applicant: Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

Inventor： Sankar Dasgupta ,  Rakesh Bhola ,  James K. Jacobs

IPC: H01M10/40

CPC classification number: H01M2/1653 ,  H01M2/1686 ,  H01M10/052 ,  H01M10/0565

Abstract: The composite electrolyte for use in a thin plate rechargeable lithium battery comprises a porous or micro-porous inert, multi-layered polymer separator laminate which carries an adherent second polymer coating containing a dissociable lithium compound, and the multi-layered separator having adherent solid second polymer layer, is impregnated with an organic liquid containing another lithium salt. The porous or micro-porous separator laminate is made of multiple polymer layers, at least one of the member layers having melting temperature at least 20-C below the melting temperature of the other polymer member layers. The composite porous electrolyte is inserted between the electrodes of a rechargeable lithium battery. In another embodiment the porous polymer separator sheet has an adherent, dissociable lithium compound containing, solid second polymer layer on each of its major faces.

Abstract translation: 用于薄板可再充电锂电池的复合电解质包括多孔或微孔惰性多层聚合物隔板层合物，其携带含有可离解锂化合物的粘附的第二聚合物涂层，并且具有粘附固体秒的多层隔板 聚合物层用含有另一种锂盐的有机液体浸渍。 多孔或微孔隔层层压件由多个聚合物层制成，其中至少一个构件层的熔融温度低于其它聚合物构件层的熔融温度至少20℃。 复合多孔电解质插入可再充电锂电池的电极之间。 在另一个实施方案中，多孔聚合物隔离片在每个主要表面上具有粘附的可离解的锂化合物，其含有固体第二聚合物层。

公开(公告)号：US07570012B2

公开(公告)日：2009-08-04

申请号：US12010016

申请日：2008-01-18

Applicant: Sankar Dasgupta ,  James K. Jacobs ,  Rakesh Bhola

Inventor： Sankar Dasgupta ,  James K. Jacobs ,  Rakesh Bhola

IPC: H02J7/00

CPC classification number: B60L11/1864 ,  B60L11/1809 ,  B60L11/1851 ,  B60L11/1868 ,  H01M6/42 ,  H01M6/5033 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/06 ,  H01M10/425 ,  H01M10/44 ,  H01M16/00 ,  H02J7/0013 ,  H02J7/0054 ,  H02J7/0063 ,  H02J7/34 ,  Y02E60/122 ,  Y02E60/126 ,  Y02T10/7011 ,  Y02T10/7016 ,  Y02T10/7055 ,  Y02T10/7061 ,  Y02T10/7072 ,  Y02T90/14

Abstract: An electrical energy storage device for storing electrical energy and supplying the electrical energy to a driving motor at different power levels is disclosed. The electrical storage device has an energy battery connected to a power battery. The energy battery has a higher energy density than the power battery. However, the power battery can provide electrical power to the electrical motor at different power rates, thereby ensuring that the motor has sufficient power and current when needed. The power battery can be recharged by the energy storage battery. In this way, the power battery temporarily stores electrical energy received from the energy battery and both batteries can provide electrical energy at the different power rates as required by the motor. The energy storage device can be releasably connected to an external power source in order to recharge both batteries. Both batteries can be recharged independently to optimize the recharging and lifetime characteristics of the batteries.

Abstract translation: 公开了一种用于存储电能并且以不同功率水平向驱动电动机供应电能的电能存储装置。 电气存储装置具有连接到动力电池的能量电池。 能量电池具有比动力电池更高的能量密度。 然而，动力电池可以以不同的功率向电动机提供电力，从而确保电动机在需要时具有足够的功率和电流。 动力电池可以由蓄能电池充电。 以这种方式，动力电池临时存储从能量电池接收的电能，并且两个电池可以按照电动机所要求的不同功率提供电能。 能量存储装置可以可释放地连接到外部电源，以便为两个电池充电。 两个电池都可以独立充电，以优化电池的充电和使用寿命特性。

公开(公告)号：US06815121B2

公开(公告)日：2004-11-09

申请号：US09906091

申请日：2001-07-17

Applicant: Sankar Dasgupta ,  James K. Jacobs ,  Rakesh Bhola

Inventor： Sankar Dasgupta ,  James K. Jacobs ,  Rakesh Bhola

IPC: H01M460

CPC classification number: H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M6/188 ,  H01M10/0525 ,  H01M10/0565 ,  Y10T29/49108 ,  Y10T29/49115

Abstract: A matted particulate electrode located between the current collector and a porous separator of a rechargeable lithium battery is described, which contains electro-active particles intermixed with pliable, solid, lithium ion conducting, polymer electrolyte filaments having adhesive surfaces. The electro-active particles and the optionally added electro-conductive carbon particles adhere to the tacky surface of the adhesively interlinking polymer electrolyte filaments. The matted particulate electrode is impregnated with an organic solution containing another lithium compound. In a second embodiment the porous separator is coated on at least one of its faces, with polymer electrolyte having an adhesive surface and made of the same polymer as the electrolyte filaments. The polymer electrolyte filaments in the matted layer may adhere to the coated surface of the separator. In addition the polymer coating is partially filling the pores of the porous electrolyte, but leaving sufficient space in the pores for the organic solution to penetrate the separator of the lithium battery.

Abstract translation: 描述了位于集电器和可再充电锂电池的多孔隔板之间的无序颗粒电极，其包含与柔性固体的锂离子传导的具有粘合表面的聚合物电解质长丝混合的电活性颗粒。 电活性粒子和任选添加的导电性碳粒子附着在粘合性交联型高分子电解质长丝的粘着面上。 用无机颗粒电极浸渍含有其他锂化合物的有机溶液。 在第二个实施方案中，多孔分离器涂覆在其至少一个表面上，聚合物电解质具有粘合剂表面并由与电解质丝相同的聚合物制成。 无光层中的聚合物电解质长丝可能附着在隔膜的涂覆表面上。 此外，聚合物涂层部分地填充多孔电解质的孔，但在孔中留出足够的空间以使有机溶液渗透到锂电池的隔板中。

公开(公告)号：US5326731A

公开(公告)日：1994-07-05

申请号：US154039

申请日：1993-11-18

Applicant: Rakesh Bhola ,  Sankar Dasgupta ,  James K. Jacobs

Inventor： Rakesh Bhola ,  Sankar Dasgupta ,  James K. Jacobs

IPC: B24D3/16 ,  C04B35/117 ,  C04B35/645 ,  C04B35/80 ,  C04B35/10 ,  B24D3/24

CPC classification number: B24D3/16 ,  C04B35/117 ,  C04B35/6455 ,  C04B35/803

Abstract: A composition for hard, sintered, tough and wear resistant ceramic articles is described. The composition is comprised of alumina, titanium carbonitride and filaments of titanium diboride or titanium nitride. The ceramic articles made of this composition are isostatically hot pressed or sintered at high temperature in inert gas. The density of the ceramic articles is usually in excess of 99% theoretical density and the hardness is greater than 20 GPa. The process was applied to manufacture ceramic cutting inserts of the above composition.

Abstract translation: 描述了用于硬质，烧结，韧性和耐磨陶瓷制品的组合物。 该组合物由氧化铝，碳氮化钛和二硼化钛或氮化钛的长丝组成。 由该组合物制成的陶瓷制品在惰性气体中在高温下均压热压或烧结。 陶瓷制品的密度通常超过理论密度的99％，硬度大于20GPa。 该方法用于制造上述组合物的陶瓷切削刀片。

公开(公告)号：US20080111508A1

公开(公告)日：2008-05-15

申请号：US12010016

申请日：2008-01-18

Applicant: Sankar Dasgupta ,  James Jacobs ,  Rakesh Bhola

Inventor： Sankar Dasgupta ,  James Jacobs ,  Rakesh Bhola

IPC: H02J7/00 ,  H01M10/44

CPC classification number: B60L11/1864 ,  B60L11/1809 ,  B60L11/1851 ,  B60L11/1868 ,  H01M6/42 ,  H01M6/5033 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/06 ,  H01M10/425 ,  H01M10/44 ,  H01M16/00 ,  H02J7/0013 ,  H02J7/0054 ,  H02J7/0063 ,  H02J7/34 ,  Y02E60/122 ,  Y02E60/126 ,  Y02T10/7011 ,  Y02T10/7016 ,  Y02T10/7055 ,  Y02T10/7061 ,  Y02T10/7072 ,  Y02T90/14

Abstract: An electrical energy storage device for storing electrical energy and supplying the electrical energy to a driving motor at different power levels is disclosed. The electrical storage device has an energy battery connected to a power battery. The energy battery has a higher energy density than the power battery. However, the power battery can provide electrical power to the electrical motor at different power rates, thereby ensuring that the motor has sufficient power and current when needed. The power battery can be recharged by the energy storage battery. In this way, the power battery temporarily stores electrical energy received from the energy battery and both batteries can provide electrical energy at the different power rates as required by the motor. The energy storage device can be releasably connected to an external power source in order to recharge both batteries. Both batteries can be recharged independently to optimize the recharging and lifetime characteristics of the batteries.

Abstract translation: 公开了一种用于存储电能并且以不同功率水平向驱动电动机供应电能的电能存储装置。 电气存储装置具有连接到动力电池的能量电池。 能量电池具有比动力电池更高的能量密度。 然而，动力电池可以以不同的功率向电动机提供电力，从而确保电动机在需要时具有足够的功率和电流。 动力电池可以由蓄能电池充电。 以这种方式，动力电池临时存储从能量电池接收的电能，并且两个电池可以按照电动机所要求的不同功率提供电能。 能量存储装置可以可释放地连接到外部电源，以便为两个电池充电。 两个电池都可以独立充电，以优化电池的充电和使用寿命特性。

公开(公告)号：US20100075232A1

公开(公告)日：2010-03-25

申请号：US12559924

申请日：2009-09-15

Applicant: Sankar Dasgupta ,  Rakesh Bhola ,  James Jacobs

Inventor： Sankar Dasgupta ,  Rakesh Bhola ,  James Jacobs

IPC: H01M6/18

CPC classification number: H01M2/1653 ,  H01M2/1686 ,  H01M10/052 ,  H01M10/0565

Abstract: The composite electrolyte for use in a thin plate rechargeable lithium battery comprises a porous or micro-porous inert, multi-layered polymer separator laminate which carries an adherent second polymer coating containing a dissociable lithium compound, and the multi-layered separator having adherent solid second polymer layer, is impregnated with an organic liquid containing another lithium salt. The porous or micro-porous separator laminate is made of multiple polymer layers, at least one of the member layers having melting temperature at least 20-C below the melting temperature of the other polymer member layers. The composite porous electrolyte is inserted between the electrodes of a rechargeable lithium battery. In another embodiment the porous polymer separator sheet has an adherent, dissociable lithium compound containing, solid second polymer layer on each of its major faces.

Abstract translation: 用于薄板可再充电锂电池的复合电解质包括多孔或微孔惰性多层聚合物隔板层合物，其携带含有可离解锂化合物的粘附的第二聚合物涂层，并且具有粘附固体秒的多层隔板 聚合物层用含有另一种锂盐的有机液体浸渍。 多孔或微孔隔层层压件由多个聚合物层制成，其中至少一个构件层的熔融温度低于其它聚合物构件层的熔融温度至少20℃。 复合多孔电解质插入可再充电锂电池的电极之间。 在另一个实施方案中，多孔聚合物隔离片在每个主要表面上具有粘附的可离解的锂化合物，其含有固体第二聚合物层。

公开(公告)号：US20050106466A1

公开(公告)日：2005-05-19

申请号：US11017005

申请日：2004-12-21

Applicant: Sankar Dasgupta ,  Rakesh Bhola ,  James Jacobs

Inventor： Sankar Dasgupta ,  Rakesh Bhola ,  James Jacobs

IPC: H01M4/02 ,  H01M4/133 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/36

CPC classification number: H01M10/0525 ,  H01M4/133 ,  H01M4/587 ,  H01M4/623 ,  H01M2004/021

Abstract: The invention basically comprises the addition of a small amount of nanometer sized carbon tubes or fibres grown by high temperature vapour deposition to a meso-phase graphite mixture used for a negative electrode (anode) for a lithium battery. These are referred to herein as “carbon nano-fibres”. According to one embodiment of the present invention, in an anode for a lithium battery having a conductive substrate coated with a pressed compact of spherical graphite and an ion-conducting polymeric binder, an amount of from 1.5 to 12% by weight of carbon nano-fibres is added. The carbon nano-fibres may have an average diameter of around 0.2 μm (200×10−9 m) a length of from 10 to 20 mm and an inner core diameter of from 65-70 nm. The spherical graphite may be meso-phase graphite and more preferably, the carbon nano-fibres are included in amount of from 2 to 9% by weight.

Abstract translation: 本发明基本上包括将通过高温气相沉积生长的少量纳米级碳管或纤维添加到用于锂电池的负极（阳极）的中间相石墨混合物中。 这些在本文中称为“碳纳米纤维”。 根据本发明的一个实施方案，在具有涂覆有球形石墨的压制体和导电性聚合物粘合剂的导电性基材的锂电池的阳极中，以碳纳米管的重量计为1.5〜12重量％ 添加纤维。 碳纳米纤维的平均直径可以为约0.2μm（200×10 -9-9μm），长度为10至20mm，内核直径为65-70nm。 球形石墨可以是内相石墨，更优选碳纳米纤维的含量为2〜9重量％。