公开(公告)号：US20230246156A1

公开(公告)日：2023-08-03

申请号：US18193995

申请日：2023-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Jianyu LIU ,  Wenqiang LI ,  Jianming ZHENG ,  Shuai XU

IPC: H01M4/04 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/534 ,  H01M10/0567

CPC classification number: H01M4/0404 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/534 ,  H01M10/0567 ,  H01M2300/0037 ,  H01M2300/0051

Abstract: An electrochemical apparatus, where the electrochemical apparatus includes electrodes, where the electrode includes a current collector, an active material layer disposed on at least one surface of the current collector, a tab disposed on the current collector, and a tab protection layer disposed on the tab, where the tab protection layer includes a first polymer layer, the first polymer layer has a melting point of TA° C., and 110≤TA≤136.5; and an electrolyte, where the electrolyte includes ethylene carbonate and propylene carbonate; based on a weight of the electrolyte, a sum of weight percentages of the ethylene carbonate and the propylene carbonate is Y %, and Y is 20-80; and Y and TA satisfy 0.147