Title:
非水電解液二次電池用絶縁性多孔質層
Document Type and Number:
Japanese Patent JP6955362
Kind Code:
B2
Abstract:
The present invention provides a nonaqueous electrolyte secondary battery insulating porous layer having an excellent charge resistance characteristic. The nonaqueous electrolyte secondary battery insulating porous layer has a fractal dimension of 2.42 to 2.60, the fractal dimension being calculated from a three-dimensional image showing a void part and a porous layer part on respective two gradation levels, the three-dimensional image being prepared by analyzing images of cross sections obtained by making observation at intervals of 20 nm in a thickness direction from a surface of the nonaqueous electrolyte secondary battery insulating porous layer by FIB-SEM measurement at a magnification of 6500 times.
Inventors:
Shusaku Hara
Yoshimaru Oe
Junji Suzuki
Hiroki Hashiwaki
Yoshimaru Oe
Junji Suzuki
Hiroki Hashiwaki
Application Number:
JP2017080836A
Publication Date:
October 27, 2021
Filing Date:
April 14, 2017
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
H01M50/489; H01M10/0566; H01M50/414; H01M50/417; H01M50/423; H01M50/449; H01M50/434; H01M50/443
Domestic Patent References:
| JP2010067435A | ||||
| JP2008270178A |
Attorney, Agent or Firm:
Kazuya Hasegawa
Kentaro Tsuruta
Kentaro Tsuruta