公开(公告)号：US06350546B1

公开(公告)日：2002-02-26

申请号：US09519534

申请日：2000-03-06

申请人： Hong Gan ,  Esther S. Takeuchi

发明人： Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M616

CPC分类号： H01M10/0567 ,  H01M6/166 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0037

摘要： A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one sulfate additive to an electrolyte comprising an alkali metal salt dissolved in a solvent mixture that includes ethylene carbonate, dimethyl carbonate, ethylmethyl carbonate and diethyl carbonate. The preferred additive is selected from a silyl sulfate, tin sulfate or an organic sulfate.

摘要翻译： 描述了具有高充电/放电容量，长循环寿命并且显示出降低的第一周期不可逆容量的锂离子电化学电池。 通过向包含溶解在包括碳酸亚乙酯，碳酸二甲酯，碳酸甲乙酯和碳酸二乙酯的溶剂混合物中的碱金属盐的电解质中加入至少一种硫酸盐添加剂来实现所述的益处。 优选的添加剂选自甲硅烷基硫酸盐，硫酸锡或有机硫酸盐。

公开(公告)号：US06274269B1

公开(公告)日：2001-08-14

申请号：US09491399

申请日：2000-01-25

申请人： Hong Gan ,  Esther S. Takeuchi

发明人： Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M460

CPC分类号： H01M6/168 ,  H01M6/164 ,  H01M6/5088 ,  H01M10/44 ,  Y10T29/49108

摘要： An alkali metal, solid cathode, nonaqueous electrochemical cell capable of delivering high current pulses, rapidly recovering its open circuit voltage and having high current capacity, is described. The stated benefits are realized by the addition of at least one phosphate additive to an electrolyte comprising an alkali metal salt dissolved in a mixture of a low viscosity solvent and a high permittivity solvent. A preferred solvent mixture includes propylene carbonate, dimethoxyethane and an alkyl phosphate additive.

摘要翻译： 描述了能够传递高电流脉冲，快速恢复其开路电压并且具有高电流容量的碱金属，固体阴极，非水电化学电池。 通过向包含溶解在低粘度溶剂和高介电常数溶剂的混合物中的碱金属盐的电解质中加入至少一种磷酸盐添加剂来实现所述的益处。 优选的溶剂混合物包括碳酸丙烯酯，二甲氧基乙烷和磷酸烷基酯添加剂。

公开(公告)号：US06200701B1

公开(公告)日：2001-03-13

申请号：US09324268

申请日：1999-06-02

申请人： Hong Gan ,  Esther S. Takeuchi

发明人： Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M604

CPC分类号： H01M10/0567 ,  H01M10/0525

摘要： A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one phosphonate additive to an electrolyte comprising an alkali metal salt dissolved in a solvent mixture that includes ethylene carbonate, dimethyl carbonate, ethylmethyl carbonate and diethyl carbonate. The preferred additive is an alkyl phosphonate compound.

摘要翻译： 描述了具有高充电/放电容量，长循环寿命并且显示出降低的第一周期不可逆容量的锂离子电化学电池。 通过向包含溶解在包括碳酸亚乙酯，碳酸二甲酯，碳酸甲乙酯和碳酸二乙酯的溶剂混合物中的碱金属盐的电解质中加入至少一种膦酸酯添加剂来实现所述益处。 优选的添加剂是烷基膦酸酯化合物。

公开(公告)号：US06180283B2

公开(公告)日：2001-01-30

申请号：US09460035

申请日：1999-12-13

申请人： Hong Gan ,  Esther S. Takeuchi

发明人： Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M460

CPC分类号： H01M6/168 ,  H01M4/626 ,  H01M6/166 ,  H01M6/5088 ,  H01M2300/0037

摘要： An alkali metal, solid cathode, nonaqueous electrochemical cell capable of delivering high current pulses, rapidly recovering its open circuit voltage and having high current capacity, is described. The stated benefits are realized by the addition of at least one organic sulfate additive to an electrolyte comprising an alkali metal salt dissolved in a mixture of a low viscosity solvent and a high permittivity solvent. A preferred solvent mixture includes propylene carbonate, dimethoxyethane and a sulfate additive having at least one unsaturated hydrocarbon containing a C(sp2 or sp3 )—C(sp3) bond unit having the C(sp3) carbon directly connected to the —OSO3— functional group, or a silyl sulfate or a tin sulfate.

摘要翻译： 描述了能够传递高电流脉冲，快速恢复其开路电压并且具有高电流容量的碱金属，固体阴极，非水电化学电池。 通过向包含溶解在低粘度溶剂和高介电常数溶剂的混合物中的碱金属盐的电解质中加入至少一种有机硫酸盐添加剂来实现所述的益处。 优选的溶剂混合物包括碳酸亚丙酯，二甲氧基乙烷和具有至少一种含C（sp2或sp3）-C（sp3）键单元的不饱和烃的硫酸盐添加剂，其中C（sp3）碳直接连接到-OSO 3官能团 ，或硫酸甲硅烷基酯或硫酸锡。

公开(公告)号：US6153338A

公开(公告)日：2000-11-28

申请号：US133799

申请日：1998-08-13

申请人： Hong Gan ,  Esther S. Takeuchi

发明人： Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M4/131 ,  H01M4/133 ,  H01M6/16 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/36

CPC分类号： H01M10/0525 ,  H01M10/0569 ,  H01M6/164 ,  H01M4/131 ,  H01M4/133

摘要： An alkali metal secondary electrochemical cell, and preferably a lithium ion cell, activated with a quaternary solvent system, is described. The solvent system comprises a quaternary mixture of dialkyl carbonates and cyclic carbonates, and preferably dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate and ethylene carbonate. Lithium ion cells activated with this electrolyte have good room temperature cycling characteristics and excellent low temperature discharge behavior.

摘要翻译： 描述了用四元溶剂体系活化的碱金属二次电化学电池，优选锂离子电池。 溶剂系统包括碳酸二烷基酯和环状碳酸酯的季铵化合物，优选碳酸二甲酯，碳酸二乙酯，碳酸甲乙酯和碳酸亚乙酯。 用该电解液活化的锂离子电池具有良好的室温循环特性和优异的低温放电特性。

公开(公告)号：US5776635A

公开(公告)日：1998-07-07

申请号：US710382

申请日：1996-09-16

申请人： Hong Gan ,  Esther S. Takeuchi

发明人： Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M4/48 ,  H01M4/52 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M6/16 ,  H01M10/40

CPC分类号： H01M4/58 ,  H01M4/483 ,  H01M6/164 ,  H01M2300/004 ,  H01M4/405 ,  H01M4/525 ,  H01M4/5825

摘要： A nonaqueous electrolyte comprising a ternary solvent system preferably including a linear ether mixed with a high permittivity solvent and a low viscosity solvent, is described. This electrolyte is useful for activating an alkali metal/solid cathode electrochemical cell of the kind that typically powers implantable medical devices. The new electrolyte provides improved cell capacity under high current pulse discharge applications while decreasing cell swelling by about 20% in comparison to conventional nonaqueous organic electrolytes consisting of propylene carbonate and dimethoxyethane as the solvents.

摘要翻译： 描述了包含优选包含与高介电常数溶剂和低粘度溶剂混合的直链醚的三元溶剂体系的非水电解质。 该电解质可用于激活通常为可植入医疗器械提供动力的碱金属/固体阴极电化学电池。 与常规的由碳酸丙烯酯和二甲氧基乙烷组成的非水有机电解质作为溶剂相比，新电解质在高电流脉冲放电应用下提供改善的电池容量，同时减少电池膨胀约20％。

公开(公告)号：US08153293B2

公开(公告)日：2012-04-10

申请号：US12967617

申请日：2010-12-14

申请人： Robert S. Rubino ,  Hong Gan ,  Esther S. Takeuchi

发明人： Robert S. Rubino ,  Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M4/02 ,  H01M2/18 ,  H01M4/58 ,  H01M4/66

CPC分类号： H01M10/0431 ,  H01M4/136 ,  H01M4/366 ,  H01M4/54 ,  H01M4/5825 ,  H01M4/661 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0583 ,  H01M10/0585 ,  Y10T29/49108

摘要： A new design for a cathode having a configuration of: SVO/first current collector/CFx/second current collector/SVO is described. The two cathode current collectors are vertically aligned one on top of the other in a middle region or zone of the cathode. This coincides to where a winding mandrel will be positioned to form a wound electrode assembly with an anode. The overlapping region of the two current collectors helps balance the expansion forces of the exemplary SVO and CFx active material layers. This, in turn, helps maintain a planar cathode that is more amenable to downstream processing. The use of two current collectors on opposite sides of an intermediate cathode active material also provides for enhanced reliability when cathodes are wound from the center as they lend structural integrity to outer portions of the wind.

摘要翻译： 描述了具有以下配置的阴极的新设计：SVO /第一集电器/ CFx /第二集电器/ SVO。 在阴极的中间区域或区域中，两个阴极集电体在另一个的顶部垂直对准。 这一点与绕组心轴将被定位以形成具有阳极的卷绕电极组件的情况相一致。 两个集电器的重叠区域有助于平衡示例性SVO和CF x活性材料层的膨胀力。 这又有助于维持更适合于下游处理的平面阴极。 在中间阴极活性材料的相对侧上使用两个集电器还提供了当从中心缠绕阴极时提高可靠性，因为它们将结构完整性提供给风的外部部分。

公开(公告)号：US07776470B2

公开(公告)日：2010-08-17

申请号：US11535139

申请日：2006-09-26

申请人： Hong Gan ,  Robert S. Rubino ,  Esther S. Takeuchi

发明人： Hong Gan ,  Robert S. Rubino ,  Esther S. Takeuchi

IPC分类号： H01M4/02

CPC分类号： H01M4/06 ,  H01M4/08 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/366 ,  H01M4/38 ,  H01M4/382 ,  H01M4/405 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/54 ,  H01M4/5815 ,  H01M4/587 ,  H01M4/661 ,  H01M4/663 ,  H01M4/667 ,  H01M4/669 ,  H01M4/70 ,  H01M6/16 ,  H01M6/5055 ,  H01M10/052 ,  H01M2004/021 ,  H01M2006/5094 ,  H01M2010/4292

摘要： Improvements in the performance of lithium electrochemical cells comprising a first cathode active material of a relatively high energy density but of a relatively low rate capability, for example CFx, contacted to one side of a current collector and with a second cathode active material having a relatively low energy density but of a relatively high rate capability, for example SVO, contacted to the opposite current collector side are described. An exemplary cathode has the configuration: SVO/first current collector/CFx/second current collector/SVO, and wherein the anodic coulombic capacity does not exceed the total coulombic capacities of the SVO and CFx by greater than 25%. Manganese oxide (MnO2) is another typically used cathode active material in lieu of SVO, and the present invention is applicable to lithium cells of that system as well.

摘要翻译： 包括具有相对较高能量密度但具有相对较低速率能力的第一阴极活性材料（例如CF x）的锂电化学电池的性能的改进，该第一阴极活性材料与集电器的一侧接触并具有与第一正极活性材料相对 描述了与相对集电器侧接触的低能量密度但具有相对较高速率能力的SVO，例如SVO。 示例性阴极具有以下配置：SVO /第一集电器/ CFx /第二集电器/ SVO，并且其中阳极库仑容量不超过SVO和CF x的总库仑容量大于25％。 氧化锰（MnO 2）是代替SVO的另一种典型使用的阴极活性材料，本发明也适用于该系统的锂电池。

公开(公告)号：US20090117457A1

公开(公告)日：2009-05-07

申请号：US11934098

申请日：2007-11-02

申请人： Steven Davis ,  Ashish Shah ,  Donald Kaiser ,  Hong Gan ,  Esther S. Takeuchi

发明人： Steven Davis ,  Ashish Shah ,  Donald Kaiser ,  Hong Gan ,  Esther S. Takeuchi

IPC分类号： H01M2/00

CPC分类号： H01M4/13 ,  H01M2/0207 ,  H01M4/366 ,  H01M4/485 ,  H01M4/583 ,  H01M4/661 ,  H01M4/72 ,  H01M6/16 ,  H01M10/044 ,  Y10T29/49108

摘要： An electrochemical cell comprising a casing, an anode comprising anode active material, a cathode, and an electrolyte solution activating the cathode and the anode is described. In one embodiment, the cathode is comprised of a first current collector, first and second sheets of a first cathode active material in contact with the first current collector, a second current collector, third and forth sheets of the first cathode active material in contact with the second current collector, and a first sheet of a second cathode active material in non-adherent and congruent contact with the second and third sheets of the first cathode active material.

摘要翻译： 描述了包括壳体，包括阳极活性材料的阳极，阴极和激活阴极和阳极的电解质溶液的电化学电池。 在一个实施例中，阴极包括与第一集电器接触的第一集电器，第一和第二片与第一集电器接触的第一阴极活性材料片，第二集电器，第三和第四片第一阴极活性材料与第 第二集电器和与第一和第三片第一阴极活性材料非粘着和一致接触的第二正极活性材料片。

公开(公告)号：US07375496B2

公开(公告)日：2008-05-20

申请号：US10646216

申请日：2003-08-22

申请人： Hong Gan ,  Noelle Waite ,  Kenneth Syracuse ,  Esther S. Takeuchi

发明人： Hong Gan ,  Noelle Waite ,  Kenneth Syracuse ,  Esther S. Takeuchi

IPC分类号： H01M10/44

CPC分类号： H01M10/44 ,  H01M4/40 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/4264

摘要： It is known that reforming implantable defibrillator capacitors at least partially restores and preserves their charging efficiency. An industry-recognized standard is to reform implantable capacitors by pulse discharging the connected electrochemical cell about once every three months throughout the useful life of the medical device. A Li/SVO cell typically powers such devices. The present invention relates to methodologies for significantly minimizing, if not entirely eliminating, the occurrence of voltage delay and irreversible Rdc growth in the about 35 % to 70 % DOD region by subjecting Li/SVO cells to novel discharge regimes. At the same time, the connected capacitors in the cardiac defibrillator are reformed to maintain them at their rated breakdown voltages.

摘要翻译： 众所周知，重组可植入除颤器电容器至少部分恢复并保持其充电效率。 行业公认的标准是通过在医疗设备的整个使用寿命期间每三个月大约一次脉冲地排放连接的电化学电池来重建可植入电容器。 Li / SVO单元通常为这些设备供电。 本发明涉及通过使Li / SVO细胞经受新颖的放电方式，使大约35％至70％的DOD区域中的电压延迟和不可逆Rdc生长显着最小化（如果不是完全消除）的方法。 同时，将心脏除颤器中连接的电容器进行重整，以将其维持在额定击穿电压。