公开(公告)号：US20200020985A1

公开(公告)日：2020-01-16

申请号：US16580194

申请日：2019-09-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Takanobu Chiga ,  Naoya Morisawa ,  Atsushi Fukui

IPC: H01M10/0569 ,  H01M10/052 ,  H01M6/16

Abstract: A nonaqueous electrolyte includes a lithium salt and a nonaqueous solvent in which the lithium salt is dissolved. The nonaqueous solvent includes a fluorinated chain carboxylate ester and a dicarbonyl compound having two carbonyl groups in the molecule. The dicarbonyl compound is at least one selected from the group consisting of esters and acid anhydrides and has not more than three atoms between the two carbonyl groups.

公开(公告)号：US20200020987A1

公开(公告)日：2020-01-16

申请号：US16582141

申请日：2019-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoya Morisawa ,  Kazuhiro Iida ,  Masaki Deguchi ,  Atsushi Fukui

IPC: H01M10/0569 ,  H01M4/1315

Abstract: A nonaqueous electrolyte solution according to one embodiment of the present disclosure contains a lithium salt and a nonaqueous solvent; the nonaqueous solvent contains fluoroethylene carbonate and a chain carboxylic acid ester having a dielectric constant of 6.0 or more; the lithium salt contains LiPO2F2 and LiSO3F; and the respective concentrations of LiPO2F2 and LiSO3F in the non-aqueous solvent are 0.15 mol/L or more.

公开(公告)号：US11539079B2

公开(公告)日：2022-12-27

申请号：US16580194

申请日：2019-09-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro Iida ,  Takanobu Chiga ,  Naoya Morisawa ,  Atsushi Fukui

IPC: H01M10/0569 ,  H01M10/052 ,  H01M6/16

Abstract: A nonaqueous electrolyte includes a lithium salt and a nonaqueous solvent in which the lithium salt is dissolved. The nonaqueous solvent includes a fluorinated chain carboxylate ester and a dicarbonyl compound having two carbonyl groups in the molecule. The dicarbonyl compound is at least one selected from the group consisting of esters and acid anhydrides and has not more than three atoms between the two carbonyl groups.

公开(公告)号：US11367903B2

公开(公告)日：2022-06-21

申请号：US16582141

申请日：2019-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoya Morisawa ,  Kazuhiro Iida ,  Masaki Deguchi ,  Atsushi Fukui

IPC: H01M10/00 ,  H01M10/0569 ,  H01M4/1315 ,  H01M4/02

Abstract: A nonaqueous electrolyte solution according to one embodiment of the present disclosure contains a lithium salt and a nonaqueous solvent; the nonaqueous solvent contains fluoroethylene carbonate and a chain carboxylic acid ester having a dielectric constant of 6.0 or more; the lithium salt contains LiPO2F2 and LiSO3F; and the respective concentrations of LiPO2F2 and LiSO3F in the non-aqueous solvent are 0.15 mol/L or more.

公开(公告)号：US20200020986A1

公开(公告)日：2020-01-16

申请号：US16580212

申请日：2019-09-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuko Hirayama ,  Naoya Morisawa ,  Takanobu Chiga ,  Kazuhiro Iida ,  Atsushi Fukui

IPC: H01M10/0569 ,  H01M10/0568 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567

Abstract: A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure comprises a positive electrode having a positive electrode active substance layer, a negative electrode having a negative electrode active substance layer, and a nonaqueous electrolyte. The nonaqueous electrolyte contains a sulfonylimide salt and a nonaqueous solvent containing a fluorinated chain carboxylic acid ester represented by a general formula. The fluorinated chain carboxylic acid ester content of the nonaqueous solvent is 80 vol % or greater and the sulfonylimide salt content is 2.4 mol or greater with respect to 1 L of the nonaqueous solvent. (In the formula, R1 and R2 are any one of H, F, and CH3-xFx (where x is 1, 2 or 3), and can be the same or different. R3 is a C1-C3 alkyl group and can contain F.)