公开(公告)号：US20110183215A1

公开(公告)日：2011-07-28

申请号：US11695253

申请日：2007-04-02

Applicant: Amy C. Marschilok ,  Randolph A. Leising ,  Esther S. Takeuchi

Inventor： Amy C. Marschilok ,  Randolph A. Leising ,  Esther S. Takeuchi

IPC: H01M10/02 ,  H01M4/64 ,  H01M4/54

CPC classification number: H01M4/54 ,  H01M4/134 ,  H01M4/661 ,  H01M4/663 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569

Abstract: A new cathode design is provided comprising a cathode active material mixed with a binder and a conductive diluent in at least two differing formulations. Each of the formulations exists as a distinct cathode layer. After each layer is pressed or sheeted individually, a first one of the layers is contacted to a current collector. The other layer is then contacted to the opposite side of the layer contacting the current collector. Therefore, by using electrodes comprised of layers, where each layer is optimized for a desired characteristic (i.e. high capacity, high power, high stability), the resulting battery will display improved function over a wide range of applications. Such an exemplary cathode is comprised of: SVO (100−x %)/SVO (100−y %)/current collector/SVO (100−y %)/SVO (100−x %), wherein x and y are different and represent percentages of non-active materials.

Abstract translation: 提供了一种新的阴极设计，其包括在至少两种不同配方中与粘合剂和导电稀释剂混合的正极活性材料。 每种制剂作为独特的阴极层存在。 在每个层被单独压制或成片之后，第一层与集电器接触。 然后将另一层与接触集电器的层的相对侧接触。 因此，通过使用由层构成的电极，其中每个层针对期望的特性（即高容量，高功率，高稳定性）进行优化，所得到的电池将在广泛的应用中显示改进的功能。 这样的示例性阴极包括：SVO（100-x％）/ SVO（100-y％）/集电器/ SVO（100-y％）/ SVO（100-x％），其中x和y不同， 代表非活性物质的百分比。

公开(公告)号：US07820328B1

公开(公告)日：2010-10-26

申请号：US11829229

申请日：2007-07-27

Applicant: Esther S. Takeuchi ,  Amy C. Marschilok ,  Randolph Leising

Inventor： Esther S. Takeuchi ,  Amy C. Marschilok ,  Randolph Leising

IPC: H01M4/62 ,  H01M4/02 ,  C08J9/26

CPC classification number: H01M4/621 ,  C08J9/26 ,  H01M4/0471 ,  H01M4/08 ,  H01M4/381 ,  H01M4/405 ,  H01M4/485 ,  H01M4/622 ,  H01M4/623 ,  H01M6/16 ,  H01M10/052 ,  Y10T29/49108

Abstract: An electrochemical cell comprising an electrode, whether it is the cathode of a primary cell or an anode or a cathode of a secondary cell, comprised of a mixture of a robust, high temperature binder along with a sacrificial decomposable polymer is described. The robust binder remains in the electrode throughout formation and processing, and maintains adhesion and cohesion of the cathode during utilization. The sacrificial decomposable polymer is present during the electrode formation stage. However, it is decomposed via a controlled treatment prior to electrode utilization. Upon subsequent high pressure pressing, the void spaces formerly occupied by the sacrificial polymer provides sites where the electrode active material collapses into a tightly compressed mass with enhanced particle-to-particle contact between the active material particles. For a cathode in a primary cell, for example a Li/SVO cell, the result is believed to be improved rate capability, capacity and stability throughout discharge.

Abstract translation: 描述了包括电极的电化学电池，无论其是初级电池的阴极还是二次电池的阳极或阴极，由稳定的高温粘合剂与牺牲的可分解聚合物的混合物组成。 在整个形成和加工过程中，坚固的粘合剂保留在电极中，并且在使用期间保持阴极的粘附和内聚力。 牺牲可分解聚合物在电极形成阶段存在。 然而，它在电极利用之前通过受控处理分解。 在随后的高压压制之后，先前由牺牲聚合物占据的空隙空间提供了电极活性材料塌陷成紧密压缩的物质的位置，其中活性材料颗粒之间具有增强的粒子与粒子之间的接触。 对于初级电池中的阴极，例如Li / SVO电池，结果被认为是在整个放电过程中提高速率能力，容量和稳定性。