公开(公告)号：US20230411627A1

公开(公告)日：2023-12-21

申请号：US18337135

申请日：2023-06-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiting WEI ,  Ning WANG ,  Xinghui WANG ,  Shisong LI ,  Shengwu ZHANG ,  Sainan MU

IPC: H01M4/66

CPC classification number: H01M4/667 ,  H01M2004/027 ,  H01M4/662

Abstract: A surface treatment composition includes, expressed as parts by weight, a first ingredient of 1 to 30 parts and a second ingredient of 1 to 30 parts. The first ingredient is a polycaprolactone modified with an acidic group and/or a salt of the acidic group. The second ingredient is selected from polyether-modified polyolefin acid, polyether-modified polyalkenoate salt, polyether-modified polyalkenoate ester, or a combination thereof.

公开(公告)号：US20230307648A1

公开(公告)日：2023-09-28

申请号：US18202487

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cong CHENG ,  Junguang CHEN ,  Haile PEI ,  Shengwu ZHANG ,  Xinghui WANG ,  Ning WANG

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/622 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/5825 ,  H01M4/505 ,  H01M4/525 ,  H01M2220/20 ,  H01M2004/028

Abstract: The present application relates to an aqueous positive electrode sheet, which may include a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer may include an aqueous binder, where the porosity of a surface area of the positive electrode active substance layer may be greater than the porosity of an inner area of the positive electrode active substance layer, and the average particle size of the positive electrode active material in the surface area may be greater than the average particle size of the positive electrode active material in the inner area. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.