公开(公告)号：US11923543B2

公开(公告)日：2024-03-05

申请号：US17049384

申请日：2019-02-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshio Kato ,  Yoshinori Kida ,  Masahiro Shiraga

IPC: H01M4/583 ,  H01M4/02

CPC classification number: H01M4/583 ,  H01M2004/027 ,  H01M2004/028

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the negative electrode contains, as a negative electrode active material, graphite particles having a volume per mass, of pores having a diameter of 2 nm or less determined by the DFT method from nitrogen adsorption isotherm, of 0.3 mm3/g or less.

公开(公告)号：US20210249658A1

公开(公告)日：2021-08-12

申请号：US17049384

申请日：2019-02-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshio Kato ,  Yoshinori Kida ,  Masahiro Shiraga

IPC: H01M4/583

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the negative electrode contains, as a negative electrode active material, graphite particles having a volume per mass, of pores having a diameter of 2 nm or less determined by the DFT method from nitrogen adsorption isotherm, of 0.3 mm3/g or less.