公开(公告)号：US20240154183A1

公开(公告)日：2024-05-09

申请号：US18499301

申请日：2023-11-01

申请人： Sumitomo Chemical Company, Limited

发明人： Shun NAKAZAWA ,  Kensaku Horie ,  Tomoaki Ozeki

IPC分类号： H01M10/42 ,  H01M10/058

CPC分类号： H01M10/4235 ,  H01M10/058

摘要： Provided is a nonaqueous electrolyte secondary battery laminated separator that makes it possible to reduce an increase in alternating-current resistance after compression. A nonaqueous electrolyte secondary battery in accordance with an embodiment includes: a nonaqueous electrolyte secondary battery functional layer; and a polyolefin base material, the nonaqueous electrolyte secondary battery functional layer and the polyolefin base material being formed on top of each other, after the nonaqueous electrolyte secondary battery laminated separator is subjected to pressure application at 20 MPa, the nonaqueous electrolyte secondary battery functional layer having a compressibility of not less than 15%, and the polyolefin base material having a compressibility of not more than 5%.

公开(公告)号：US11769909B2

公开(公告)日：2023-09-26

申请号：US16849281

申请日：2020-04-15

申请人： Sumitomo Chemical Company, Limited

发明人： Yuichiro Azuma ,  Kensaku Horie

IPC分类号： H01M10/0565 ,  H01M50/46 ,  H01M50/489 ,  H01M50/491 ,  H01M50/423 ,  H01M50/417 ,  H01M50/451

CPC分类号： H01M10/0565 ,  H01M50/417 ,  H01M50/423 ,  H01M50/451 ,  H01M50/46 ,  H01M50/489 ,  H01M50/491 ,  H01M2300/0082

摘要： An aspect of the present invention achieves a nonaqueous electrolyte secondary battery porous layer that has both favorable ion permeability and favorable heat resistance despite being thin. A nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention has a thickness of less than 8 μm and an elastic modulus in a shear direction of not less than 16 GPa.