公开(公告)号：US11211610B2

公开(公告)日：2021-12-28

申请号：US16426867

申请日：2019-05-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei Li ,  Haihao Shi ,  Huihui Liu ,  Chao Jin ,  Jianbao Xu ,  Shisong Li ,  Chao Guo

IPC: H01M4/62 ,  H01G11/38 ,  H01G11/48 ,  H01M4/02

Abstract: The present application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive active material layer, and a binding layer disposed between the current collector and the positive active material layer, the binding layer comprising a polymer material, a conductive material, and an inorganic filler, wherein the polymer material comprises a binding layer matrix and the binding layer matrix is an oil-dispersible polymer material having a solubility in NMP at 130° C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The positive electrode plate can improve the safety performance of the electrochemical device (for example, a capacitor, a primary battery, a secondary battery, or the like) under abnormal conditions such as nailing penetration.