中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

152 records (took 0.019 seconds)

    Nonaqueous organic electrolytes for low temperature discharge of rechargeable electrochemical cells
    82.
    发明授权
    Nonaqueous organic electrolytes for low temperature discharge of rechargeable electrochemical cells 有权
    用于可再充电电化学电池的低温放电的非水有机电解质

    公开(公告)号：US6153338A

    公开(公告)日：2000-11-28

    申请号：US133799

    申请日：1998-08-13

    Applicant: Hong Gan ,  Esther S. Takeuchi

    Inventor： Hong Gan ,  Esther S. Takeuchi

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

    CPC classification number: H01M10/0525 ,  H01M10/0569 ,  H01M6/164 ,  H01M4/131 ,  H01M4/133

    Abstract: 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.

    Abstract translation: 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。

    Discharge promoter mixture for reducing cell swelling in alkali metal electrochemical cells
    83.
    发明授权
    Discharge promoter mixture for reducing cell swelling in alkali metal electrochemical cells 失效
    用于减少碱金属电化学电池中细胞膨胀的放电促进剂混合物

    公开(公告)号：US5807645A

    公开(公告)日：1998-09-15

    申请号：US878040

    申请日：1997-06-18

    Applicant: Esther S. Takeuchi ,  William C. Thiebolt, III

    Inventor： Esther S. Takeuchi ,  William C. Thiebolt, III

    IPC: H01M4/02 ,  H01M4/62 ,  H01M6/16 ,  H01M10/40

    CPC classification number: H01M4/625 ,  H01M6/16 ,  Y10T29/49108

    Abstract: An electrode comprising acetylene black or carbon black carbonaceous diluent having a surface area less than about 100 m.sup.2 /gram mixed with graphite and a charge transfer active material to provide an electrode active admixture, is described. The carbonaceous diluent/graphite blend increases the charge transfer capability within the electrode while exhibiting diminished cell swelling in comparison to high surface area carbonaceous diluents. A preferred carbonaceous diluent is SHAWINIGAN BLACK.RTM. carbon.

    Abstract translation: 描述了包含与石墨混合的表面积小于约100m 2 / g的乙炔黑或碳黑碳质稀释剂的电极和电荷转移活性材料以提供电极活性混合物。 与高表面积的碳质稀释剂相比，碳质稀释剂/石墨混合物增加了电极内的电荷转移能力，同时表现出减少的细胞溶胀。 优选的碳质稀释剂是SHAWINIGAN BLACK TM碳。

    Ternary solvent nonaqueous organic electrolyte for alkali metal electrochemical cells
    84.
    发明授权
    Ternary solvent nonaqueous organic electrolyte for alkali metal electrochemical cells 失效
    用于碱金属电化学电池的三元溶剂非水有机电解质

    公开(公告)号：US5776635A

    公开(公告)日：1998-07-07

    申请号：US710382

    申请日：1996-09-16

    Applicant: Hong Gan ,  Esther S. Takeuchi

    Inventor： Hong Gan ,  Esther S. Takeuchi

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

    CPC classification number: H01M4/58 ,  H01M4/483 ,  H01M6/164 ,  H01M2300/004 ,  H01M4/405 ,  H01M4/525 ,  H01M4/5825

    Abstract: 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.

    Abstract translation: 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％。

    Battery design for achieving end-of-life indication during electrical discharge
    86.
    发明授权
    Battery design for achieving end-of-life indication during electrical discharge 失效
    电池设计，用于在放电期间达到寿命终止指示

    公开(公告)号：US5569553A

    公开(公告)日：1996-10-29

    申请号：US400975

    申请日：1995-03-08

    Applicant: Sally A. Smesko ,  Esther S. Takeuchi ,  Steven J. Ebel

    Inventor： Sally A. Smesko ,  Esther S. Takeuchi ,  Steven J. Ebel

    IPC: H01M4/62 ,  H01M6/10 ,  H01M6/16 ,  H01M6/50 ,  H01M10/05 ,  H01M10/48

    CPC classification number: H01M10/05 ,  H01M10/48 ,  H01M6/16 ,  H01M6/5055 ,  H01M4/625 ,  H01M6/10

    Abstract: A cell construction that makes use of unbalanced electrode components or portions comprising one of the electrodes of an electrochemical cell to provide an end-of-life indication, is described. The unbalanced electrode components can have dissimilar physical dimensions or dissimilar percent loading of electrode active material. This renders the one dissimilar electrode component having the lesser physical dimension, i.e., lesser surface area or thickness, or lesser quantity of electrode active material electrochemically unreactive prior to the other electrode component during the course of cell discharge. Upon the early exhaustion or unreactiveness of the one dissimilar electrode component, the total cell interelectrode working capacity is reduced by a predetermined factor. The remaining functional electrode component provides the cell with sufficient capacity for electrical discharge at a predetermined lower energy level.

    Abstract translation: 描述了使用不平衡电极部件或包括电化学电池的电极之一的部分来提供寿命终止指示的电池结构。 不平衡的电极组件可以具有不同的物理尺寸或不同的电极活性材料的百分比负载。 这使得在电池放电过程中，在另一个电极部件之前，电极活性材料具有较小的物理尺寸，即较小的表面积或厚度，或较少量的电化学活性物质的不相似电极组分。 在一个不同电极部件的早期耗尽或不活动的情况下，总细胞电极间工作容量减小预定因子。 剩余的功能电极组件为电池提供足够的容量以在预定的较低能量水平进行放电。

    Aqueous blended electrode material for use in electrochemical cells and method of manufacture
    87.
    发明授权
    Aqueous blended electrode material for use in electrochemical cells and method of manufacture 失效
    用于电化学电池的水性共混电极材料及其制造方法

    公开(公告)号：US5543249A

    公开(公告)日：1996-08-06

    申请号：US396665

    申请日：1995-03-01

    Applicant: Esther S. Takeuchi ,  Michael F. Pyszczek

    Inventor： Esther S. Takeuchi ,  Michael F. Pyszczek

    IPC: H01M4/02 ,  B22F1/00 ,  H01M4/04 ,  H01M4/26 ,  H01M4/62 ,  B22F3/00

    CPC classification number: H01M4/0471 ,  B22F1/0059 ,  H01M4/04 ,  H01M4/0402 ,  H01M4/0435 ,  H01M4/62 ,  H01M2004/028 ,  Y10T29/49115

    Abstract: A method for preparing an electrode component comprises mixing an electrode active material in a water-based environment with the aid of surfactants. A preferred embodiment of this process comprises combining a high surface area carbonaceous cathode active material with a water/surfactant mixture, and then adding a fluoro-polymer as the binder material to the slurry. The resulting paste is processed and formed into the cathode material. This process replaces the use of isopropyl alcohol with the water/surfactant mixture as the solvent. Preferred surfactants include those of the polyglycol family.

    Abstract translation: 一种制备电极组件的方法包括借助于表面活性剂在水基环境中混合电极活性材料。 该方法的优选实施方案包括将高表面积碳质正极活性材料与水/表面活性剂混合物组合，然后将作为粘合剂材料的氟聚合物加入到浆料中。 将所得糊状物加工并形成阴极材料。 该方法取代了异丙醇与水/表面活性剂混合物作为溶剂的用途。 优选的表面活性剂包括聚二醇家族的表面活性剂。

    Preparation of cathode active material by hydrothermal reaction
    89.
    发明申请
    Preparation of cathode active material by hydrothermal reaction 审中-公开
    通过水热反应制备阴极活性材料

    公开(公告)号：US20080138707A1

    公开(公告)日：2008-06-12

    申请号：US10894305

    申请日：2004-07-19

    Applicant: Esther S. Takeuchi ,  Veronica Lamothe ,  Randolph Leising

    Inventor： Esther S. Takeuchi ,  Veronica Lamothe ,  Randolph Leising

    IPC: H01M4/54 ,  C01G31/02 ,  C01G5/00

    CPC classification number: C01G31/00 ,  B82Y30/00 ,  C01G31/006 ,  C01G31/02 ,  C01P2004/03 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/54

    Abstract: The current invention relates to the preparation of an improved cathode active material for non-aqueous lithium electrochemical cell. In particular, the cathode active material comprised ε-phase silver vanadium oxide prepared by using silver- and vanadium-containing starting materials in a stoichiometric molar proportion to give a Ag:V ratio of about 1:2. The reactants are homogenized and then added to an aqueous solution followed by heating in a pressurized vessel. The resulting ε-phase SVO possesses a higher surface area than ε-phase SVO produced by other prior art techniques. Consequently, the ε-phase SVO material provides an advantage in greater discharge capacity in pulse dischargeable cells.

    Abstract translation: 本发明涉及用于非水电解锂电化学电池的改进的阴极活性材料的制备。 特别地，阴极活性材料包括通过使用含有钒和钒的起始材料以化学计量摩尔比例制备的ε相银钒氧化物，得到约1:2的Ag:V比。 将反应物均化，然后加入到水溶液中，随后在加压容器中加热。 所得到的ε相SVO具有比其它现有技术产生的ε相SVO更高的表面积。 因此，ε相SVO材料在脉冲放电单元中的更大放电容量中提供了优点。

    Method To Reduce Resistance For Lithium/Silver Vanadium Oxide Electrochemical Cells
    90.
    发明申请
    Method To Reduce Resistance For Lithium/Silver Vanadium Oxide Electrochemical Cells 审中-公开
    降低锂/银氧化钒电池电阻的方法

    公开(公告)号：US20080007216A1

    公开(公告)日：2008-01-10

    申请号：US11774063

    申请日：2007-07-06

    Applicant: Esther S. Takeuchi ,  Randolph Leising

    Inventor： Esther S. Takeuchi ,  Randolph Leising

    IPC: H02J7/00

    CPC classification number: H01M6/50 ,  H01G9/155 ,  H01M4/382 ,  H01M4/54 ,  H01M6/16 ,  H01M6/5033 ,  H01M6/5088 ,  H01M10/4264

    Abstract: Increased Rdc in electrochemical cells is detrimental because under high rate discharge regimes, such as used in powering an implantable cardiac defibrillator (ICD), the amount of energy delivered by the cell over a given period of time is lower as Rdc increases. This reduction in delivered energy results in a longer period of time needed to fully charge the ICD capacitors so that it takes longer to deliver the necessary therapy. Further, an industry recognized standard is to pulse discharge cell about every 90 days to charge the capacitors in the ICD to or near their maximum energy breakdown voltage to heal microfractures that can occur in the capacitor dielectric oxide. However, the present invention requires initiation of more frequent current pulsing upon the detection of an increase in Rdc or charge time. This is even though the Rdc measurement may be below some threshold reading. More frequent pulsing is beneficial for reducing irreversible Rdc growth in the cell, which typically occurs in middle-of-life from about 25% to 70% depth-of-discharge.

    Abstract translation: 电化学电池中Rdc的增加是有害的，因为在诸如用于为可植入心脏除颤器（ICD）供电的高速率放电方案中，在给定时间段内由电池递送的能量的量随着Rdc的增加而降低。 递送能量的这种减少导致完全充电ICD电容器所需的更长的时间，从而需要更长的时间来提供必要的治疗。 此外，行业公认的标准是每90天脉冲放电单元，以将ICD中的电容器充电至其最大能量击穿电压或接近其最大能量击穿电压，以愈合可能发生在电容器电介质氧化物中的微裂缝。 然而，本发明需要在检测到Rdc或充电时间的增加时引发更频繁的电流脉冲。 即使Rdc测量值可能低于某个阈值读数。 更频繁的脉冲对于减少细胞中不可逆的Rdc生长是有益的，其通常在中等寿命中从约25％至70％的放电深度发生。

Patent Agency Ranking