Title:
SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2018147692
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a separator for a nonaqueous electrolyte secondary battery capable of realizing a nonaqueous electrolyte secondary battery having a low rate of battery resistance after aging charge and discharge of the nonaqueous electrolyte secondary battery and after repeating charge and discharge cycle.SOLUTION: The separator for nonaqueous electrolyte secondary battery includes a polyolefin porous film. The magnitude of a slope of a tangent of a region III in an ultrasonic attenuation rate curve of the separator for a nonaqueous electrolyte secondary battery immersed in an electrolytic solution is 3.5 mV/s or more and 14 mV/s or less.SELECTED DRAWING: None
Inventors:
ARISE ICHIRO
MURAKAMI TSUTOMU
MURAKAMI TSUTOMU
Application Number:
JP2017041096A
Publication Date:
September 20, 2018
Filing Date:
March 03, 2017
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
H01M10/0566; H01M50/411; H01M50/417; H01M50/451; H01M50/406
Domestic Patent References:
| JP2013044536A | 2013-03-04 | |||
| JP2007103040A | 2007-04-19 | |||
| JP2010180341A | 2010-08-19 | |||
| JPH10330521A | 1998-12-15 |
Foreign References:
| WO2013103128A1 | 2013-07-11 |
Attorney, Agent or Firm:
Kazuya Hasegawa
Kentaro Tsuruta
Kentaro Tsuruta