According to the announcement of the State Intellectual Property Office, Contemporary Amperex Technology Co., Ltd. has applied for a patent titled "Electrode Assembly and Battery Cell, Battery, and Electric Device Including the Same," with publication number CN117199712A, and the application was filed in June 2022.
The abstract indicates that the application provides an electrode assembly and battery cell, battery, and electric device including the same. The electrode assembly comprises a positive electrode sheet, a negative electrode sheet, and a separator film positioned between the positive and negative electrode sheets. The separator film includes a base film and a lithium storage material coating, where the base film has a first surface facing the positive electrode sheet and a second surface facing the negative electrode sheet, and the lithium storage material coating is located on the first surface.

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