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    • 7. 发明授权
    • Electrochemical cell electrode with improved particle-to-particle contact and method of manufacturing
    • 具有改进的粒子与粒子接触的电化学电池电极和制造方法
    • US07820328B1
    • 2010-10-26
    • US11829229
    • 2007-07-27
    • Esther S. TakeuchiAmy C. MarschilokRandolph Leising
    • Esther S. TakeuchiAmy C. MarschilokRandolph Leising
    • H01M4/62H01M4/02C08J9/26
    • H01M4/621C08J9/26H01M4/0471H01M4/08H01M4/381H01M4/405H01M4/485H01M4/622H01M4/623H01M6/16H01M10/052Y10T29/49108
    • 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.
    • 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。