US 12,249,713 B2
Electrode plate, method for preparing same, secondary battery, battery module, and battery pack
Wei Chen, Ningde (CN); Huan Che, Ningde (CN); Fang Luo, Ningde (CN); and Shisong Li, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Apr. 12, 2024, as Appl. No. 18/634,752.
Application 18/634,752 is a continuation of application No. PCT/CN2022/124963, filed on Oct. 12, 2022.
Claims priority of application No. 202210001673.3 (CN), filed on Jan. 4, 2022.
Prior Publication US 2024/0282958 A1, Aug. 22, 2024
Int. Cl. H01M 4/04 (2006.01); H01M 4/02 (2006.01); H01M 4/1391 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01)
CPC H01M 4/525 (2013.01) [H01M 4/0404 (2013.01); H01M 4/1391 (2013.01); H01M 4/623 (2013.01); H01M 4/667 (2013.01); H01M 2004/028 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electrode plate, comprising,
a main body region and an isolation region, wherein the isolation region is arranged on both sides of the main body region along a width direction of the electrode plate, the isolation region is provided with an insulating strip coating, and the main body region is provided with an active material layer, wherein,
an outer edge of the active material layer is confined to a junction between the main body region and the isolation region, and a contact angle between a slurry forming the active material layer and the insulating strip coating is more than 90°, and is optionally more than 125°,
the slurry forming the active material layer is a slurry of an oily system, and the insulating strip coating comprises an oleophobic material,
the oleophobic material comprises at least one of polytetrafluoroethylene and nanometer SiO2.