公开(公告)号：US07211349B2

公开(公告)日：2007-05-01

申请号：US10631097

申请日：2003-07-31

Applicant: Randolph Leising ,  Esther S. Takeuchi

Inventor： Randolph Leising ,  Esther S. Takeuchi

IPC: H01M4/34

CPC classification number: H01M6/16 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5825 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028

Abstract: An improved cathode material for nonaqueous electrolyte lithium electrochemical cell is described. The preferred active material is ε-phase silver vanadium oxide (Ag2V4O11) coated with a protective layer of a metal oxide, preferably γ-phase SVO (Ag1.2V3O1.8). The SVO core provides high capacity and rate capability while the protective coating reduces reactivity of the active particles with electrolyte to improve the long-term stability of the cathode.

Abstract translation: 描述了用于非水电解质锂电化学电池的改进的阴极材料。 优选的活性材料是涂覆有金属氧化物保护层的ε相银钒氧化物（Ag 2 N 2 O 4 O 11 N 11） 优选γ相SVO（Ag 1/2 3 3 N 1）。 SVO核提供高容量和速率能力，而保护涂层降低活性颗粒与电解质的反应性，从而提高阴极的长期稳定性。

公开(公告)号：US07068036B1

公开(公告)日：2006-06-27

申请号：US10975894

申请日：2004-10-28

Applicant: Kenneth C. Syracuse ,  Esther S. Takeuchi

Inventor： Kenneth C. Syracuse ,  Esther S. Takeuchi

IPC: G01N27/416 ,  H02J7/00 ,  H01M4/58

CPC classification number: H01M6/50 ,  H01M4/5835 ,  H01M6/5083 ,  H01M10/42 ,  H01M10/4285 ,  H01M10/44

Abstract: A model for estimating the discharge profile of a Li/CFx cell is described. The model uses as inputs the load at which the cell is subjected to and the planar surface area to estimate current density. Then, current density is used to estimate cell voltage at each 2% depth-of-discharge.

Abstract translation: 描述了用于估计Li / CF 电池的放电曲线的模型。 该模型将电池的负载和平坦的表面积用作输入来估计电流密度。 然后，使用电流密度来估计每2％放电深度的电池电压。

公开(公告)号：US07052804B2

公开(公告)日：2006-05-30

申请号：US10309856

申请日：2002-12-04

Applicant: Robert S. Rubino ,  Hong Gan ,  Esther S. Takeuchi

Inventor： Robert S. Rubino ,  Hong Gan ,  Esther S. Takeuchi

IPC: H01M4/02

CPC classification number: H01M4/131 ,  H01M4/136 ,  H01M4/485 ,  H01M4/525 ,  H01M4/54 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0525 ,  H01M2300/0025 ,  H01M2300/0037

Abstract: A new sandwich positive electrode design for a secondary cell is provided comprising a “sacrificial” alkali metal along with a cathode active material. In the case of silver vanadium oxide, the sacrificial alkali metal is preferably lithium. Upon activating the cells, the lithium metal automatically intercalates into the silver vanadium oxide. That way, the sacrificial lithium is consumed and essentially lithiates the silver vanadium oxide. This means that cathode active materials, such as silver vanadium oxide, which before now were generally only used in primary cells, are now useful in secondary cells. In some use applications, silver vanadium oxide is more desirable than typically used lithiated cathode active materials.

公开(公告)号：US06803147B2

公开(公告)日：2004-10-12

申请号：US10037133

申请日：2001-12-27

Applicant: Esther S. Takeuchi ,  Marcus Palazzo

Inventor： Esther S. Takeuchi ,  Marcus Palazzo

IPC: H01M454

CPC classification number: C01G31/00 ,  C01P2006/40 ,  H01M4/48 ,  H01M4/483 ,  H01M4/5825 ,  H01M6/16

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 comprises &egr;-phase silver vanadium oxide prepared by using a &ggr;-phase silver vanadium oxide starting material. The reaction of &ggr;-phase SVO with a silver salt produces the novel &egr;-phase SVO possessing a lower surface area than &egr;-phase SVO produced from vanadium oxide (V2O5) and a similar silver salt as starting materials. Consequently, the low surface area &egr;-phase SVO material provides an advantage in greater long term stability 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，正极活性物质包括通过使用γ相银钒氧化物原料制备的ε相银钒氧化物。 γ相SVO与银盐的反应产生具有比由氧化钒（V2O5）和类似的银盐作为起始原料产生的ε相SVO更低的表面积的新型ε相SVO。 因此，低表面积ε相SVO材料在脉冲可放电电池的更长的长期稳定性方面提供了优点。

公开(公告)号：US06743550B2

公开(公告)日：2004-06-01

申请号：US10000884

申请日：2001-11-15

Applicant: Hong Gan ,  Esther S. Takeuchi

Inventor： Hong Gan ,  Esther S. Takeuchi

IPC: H01M450

CPC classification number: H01M4/34 ,  H01M4/06 ,  H01M4/366 ,  H01M4/40 ,  H01M4/405 ,  H01M4/48 ,  H01M4/502 ,  H01M4/54 ,  H01M4/70 ,  H01M2004/028

Abstract: The present invention relates to a new sandwich cathode design having two cathode active materials provided on opposite sides of a current collector. The respective active materials are similar in terms of, for example, their rate capability, their energy density, or some other parameter. However, one material may have an advantage over the other in one characteristic, but is disadvantageous in another. The cathode is built in a sandwich configuration having a first one of the active materials sandwiched between two current collectors. Then, the second active material is provided in contact with at least the other side of one of the current collectors, and preferably facing the anode. An exemplary cathode has the following configuration: MnO2/current collector/SVO/current collector/MnO2.

Abstract translation: 本发明涉及一种新型夹层阴极设计，其具有设置在集电器两侧的两个阴极活性材料。 各种活性物质在其速率能力，能量密度或某些其它参数方面是相似的。 然而，一种材料在一个特征中可能具有超过另一种的优点，但在另一种特性中是不利的。 阴极内置有夹层结构，其具有夹在两个集电器之间的第一活性材料。 然后，第二活性物质与集电体之一的至少另一侧相接触，优选面向阳极。 示例性阴极具有以下构造：MnO 2 /集电体/ SVO /集电体/ MnO 2。

公开(公告)号：US06727022B2

公开(公告)日：2004-04-27

申请号：US09992227

申请日：2001-11-19

Applicant: Hong Gan ,  Esther S. Takeuchi

Inventor： Hong Gan ,  Esther S. Takeuchi

IPC: H01M474

CPC classification number: H01M10/0525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/0404 ,  H01M4/0416 ,  H01M4/043 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/362 ,  H01M4/366 ,  H01M4/485 ,  H01M4/54 ,  H01M4/583 ,  H01M4/5835 ,  H01M4/742 ,  H01M6/16 ,  H01M10/0587 ,  Y10T29/49108

Abstract: The present comprises an electrode having the configuration: first active material/current collector screen/second active material. When one of the active materials is in a powder form, it is possible for that material to move through openings in the current collector screen to “contaminate” the interface between the other active material and the current collector. The present invention consists of having the other electrode active materials in a form incapable of moving through the current collector to the other side thereof. Then, the assembly is pressed from the direction of the other electrode active material. This seals off the current collector as the pressing force moves the current collector against the powdered electrode active material.

Abstract translation: 本发明包括具有以下结构的电极：第一活性材料/集流体屏/第二活性材料。 当活性材料中的一种为粉末形式时，该材料可能通过集电器屏幕中的开口移动以“污染”另一活性材料与集电器之间的界面。 本发明包括使其它电极活性材料的形式不能通过集电器移动到另一侧。 然后，从另一个电极活性物质的方向按压该组件。 当挤压力将集电体移动到粉末状电极活性材料上时，这封闭集电器。

公开(公告)号：US06677077B2

公开(公告)日：2004-01-13

申请号：US09848457

申请日：2001-05-03

Applicant: David M. Spillman ,  Esther S. Takeuchi

Inventor： David M. Spillman ,  Esther S. Takeuchi

IPC: H01M210

CPC classification number: H01M6/103 ,  H01M6/16 ,  H01M6/162 ,  H01M6/5016 ,  H01M2006/5094 ,  Y10T29/49108

Abstract: An electrochemical cell comprising a medium rate electrode region intended to be discharged under a substantially constant drain and a high rate electrode region intended to be pulse discharged, is described. Both electrode regions share a common anode and are activated with the same electrolyte.

Abstract translation: 描述了一种电化学电池，其包括期望在基本恒定的漏极下放电的中速电极区域和旨在被脉冲放电的高速率电极区域。 两个电极区域共享一个共同的阳极并且被相同的电解质激活。

公开(公告)号：US06641953B2

公开(公告)日：2003-11-04

申请号：US09756889

申请日：2001-01-09

Applicant: Esther S. Takeuchi ,  Robert S. Rubino ,  Hong Gan

Inventor： Esther S. Takeuchi ,  Robert S. Rubino ,  Hong Gan

IPC: H01M200

CPC classification number: H01M10/0525 ,  H01M4/485 ,  H01M4/587 ,  H01M4/623 ,  H01M4/661 ,  H01M10/0569 ,  H01M16/00 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2300/0037 ,  Y10T29/49108

Abstract: A rechargeable lithium-ion cell capable of being discharged to deliver high power pulses sufficient for implantable defibrillation applications and the like, is described. The cell is housed in a casing having an external volume of 5 cm3, or less. Both the negative and positive electrodes are less than about 0.15 mm in total thickness. Negative and positive electrodes of a reduced thickness provide the cell with high electrode surface area relative to its volume. As such, the present cell is capable of providing pulses in excess of 30C with minimal voltage drop.

Abstract translation: 描述了能够被放电以提供足以用于可植入除颤应用等的高功率脉冲的可再充电锂离子电池。 电池容纳在外部体积为5cm 3或更小的外壳中。 负电极和正电极的总厚度都小于约0.15mm。 减小厚度的负电极和正电极相对于其体积为电池提供高电极表面积。 因此，本电池能够以最小的电压降提供超过30℃的脉冲。

公开(公告)号：US06623887B2

公开(公告)日：2003-09-23

申请号：US09793246

申请日：2001-02-26

Applicant: Hong Gan ,  Esther S. Takeuchi

Inventor： Hong Gan ,  Esther S. Takeuchi

IPC: H01M434

CPC classification number: H01M10/052 ,  H01M4/13 ,  H01M4/131 ,  H01M4/134 ,  H01M4/483 ,  H01M4/54 ,  H01M6/16

Abstract: A method for synthesizing a mixture of &egr;-SVO (Ag2V4O11) and &ggr;-SVO (Ag1.6V4O10.8) by a two-step raw materials mixing process, is described. &ggr;-SVO is the preferred SVO in terms of electrochemical performance, such as reduced Rdc growth and reduced or eliminated voltage delay. On the other hand, &egr;-SVO has slightly higher volumetric capacity than y-SVO. AgVO3 is an undesirable component in Li/SVO cell cathodes because it causes increased Rdc growth and larger voltage delay in comparison to the pure product materials. According to the present invention, a mixture of &egr;-SVO (0-100%)+&ggr;-SVO (100-0%) as a cathode active material in lithium cells is preferred.

Abstract translation: 描述了通过两步原料混合过程合成ε-SVO（Ag2V4O11）和γ-SVO（Ag1.6V4O10.8）的混合物的方法。 在电化学性能方面，γ-SVO是优选的SVO，例如降低的Rdc生长和减少或消除的电压延迟。 另一方面，epsil-SVO的体积容量比y-SVO略高。 AgVO3是Li / SVO电池阴极中不合需要的组分，因为与纯产品材料相比，它导致Rdc生长增加和电压延迟更大。 根据本发明，优选在锂电池中作为正极活性物质的ε-SVO（0-100％）+γ-SVO（100-0％）的混合物。

公开(公告)号：US06623884B1

公开(公告)日：2003-09-23

申请号：US09633408

申请日：2000-08-07

Applicant: David M. Spillman ,  Esther S. Takeuchi

Inventor： David M. Spillman ,  Esther S. Takeuchi

IPC: H01M400

CPC classification number: H01M4/131 ,  H01M4/362 ,  H01M4/485 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/058 ,  H01M2010/4292

Abstract: A secondary electrochemical cell comprising a medium rate electrode region in a side-by-side electrode plate configuration intended to be discharged under a substantially constant drain and a high rate electrode region disposed in a jellyroll wound configuration intended to be pulse discharged, is described. Both electrode regions share a common anode and are activated with the same electrolyte.

Abstract translation: 描述了二次电化学电池，其包括在基本上恒定的漏极下排放的并排电极板构造的中速电极区域和设置成旨在被脉冲放电的果冻卷绕构造的高倍率电极区域。 两个电极区域共享一个共同的阳极并且被相同的电解质激活。