公开(公告)号：US10811729B2

公开(公告)日：2020-10-20

申请号：US15957047

申请日：2018-04-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomoki Tsuji ,  Masahiro Shiraga ,  Manabu Takijiri ,  Takayuki Shirane ,  Hiroyuki Fujimoto

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/525 ,  H01M4/131 ,  H01M2/36 ,  H01M4/02

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode mix layer, a negative electrode including a negative electrode mix layer, and a nonaqueous electrolyte containing a nonaqueous solvent. A surface of the negative electrode mix layer is provided with grooves. The nonaqueous electrolyte contains 10 volume percent or more of a fluorinated solvent with respect to the volume of the nonaqueous solvent and has a viscosity (25° C.) of 3.50 mPa·s or more as measured with a differential pressure viscometer.

公开(公告)号：US20180241087A1

公开(公告)日：2018-08-23

申请号：US15957047

申请日：2018-04-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomoki Tsuji ,  Masahiro Shiraga ,  Manabu Takijiri ,  Takayuki Shirane ,  Hiroyuki Fujimoto

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/525

CPC classification number: H01M10/0569 ,  H01M2/36 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/025 ,  H01M2004/028 ,  H01M2300/0034

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode mix layer, a negative electrode including a negative electrode mix layer, and a nonaqueous electrolyte containing a nonaqueous solvent. A surface of the negative electrode mix layer is provided with grooves. The nonaqueous electrolyte contains 10 volume percent or more of a fluorinated solvent with respect to the volume of the nonaqueous solvent and has a viscosity (25° C.) of 3.50 mPa·s or more as measured with a differential pressure viscometer.