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    • 21. 发明授权
    • Separator having a plasticizer coating for use in electrochemical cell devices
    • 具有用于电化学电池器件的增塑剂涂层的分离器
    • US06579643B1
    • 2003-06-17
    • US09447772
    • 1999-11-23
    • Antoni S. Gozdz
    • Antoni S. Gozdz
    • H01M216
    • H01G9/155H01G9/02H01M2/1653H01M4/02Y02E60/13
    • A separator for use in laminated multi-layer electrochemical cell device structures. The devices comprise positive and negative electrode layer members of polymeric matrix composition having the microporous polyolefin membrane separator member interposed therebetween wherein the separator membrane includes a polymer coating layer. The separator is treated to provide a deposited coating of a primary plasticizer for the polymer coating layer. The device electrode and separator members are then assembled and laminated at a compressive force and temperature at which the plasticizer film softens the polymer coating of the separator member sufficiently to establish a strong interfacial bond with the matrix polymers of the electrode members and thereby form a laminated unitary cell structure. In another embodiment, the primary plasticizer comprises a component of the electrode polymeric matrix compositions. In either embodiment, the plasticizer subsequently volatilizes from the structure to further strengthen the interfacial bond, yet its temporary presence in the interfacial region of the multi-layer cell structure enables lamination of the cell members at a temperature below the pore-collapse temperature of the separator membrane, thereby preserving the thermal shut-down protection feature of the microporous separator.
    • 用于层压多层电化学电池器件结构的隔板。 这些装置包括聚合物基质组合物的正电极层和负极层构件,其中介于其间的微孔聚烯烃隔膜构件,其中隔膜包括聚合物涂层。 处理分离器以提供用于聚合物涂层的初级增塑剂的沉积涂层。 然后将装置电极和分隔件组件以压缩力和温度层压,在该压缩力和温度下,增塑膜充分地软化隔板构件的聚合物涂层,以与电极构件的基质聚合物形成强界面结合,从而形成层压 单体电池结构。 在另一个实施方案中,主增塑剂包含电极聚合物基质组合物的组分。 在任一实施方案中,增塑剂随后从该结构挥发,以进一步加强界面结合,但其暂时存在于多层电池结构的界面区域中,可使电池构件在低于 隔膜,从而保留微孔隔膜的热关闭保护功能。