公开(公告)号：US20220416219A1

公开(公告)日：2022-12-29

申请号：US17899195

申请日：2022-08-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki KAMITAKE ,  Kunihiko MINEYA ,  Ayumu FUKUOKA

IPC: H01M4/131 ,  H01M4/133

Abstract: An electrode material of the present disclosure includes an active material and a solid electrolyte. The length of an interface between the active material and the solid electrolyte per unit area of the cross section of the electrode material is 0.29 μm/μm2 or more, and the filling rate of the electrode material is 80% or more. A battery of the present disclosure includes a first electrode, a second electrode, and an electrolyte layer positioned between the first electrode and the second electrode. At least one selected from the group consisting of the first electrode and the second electrode includes the electrode material of the present disclosure.

公开(公告)号：US20230098705A1

公开(公告)日：2023-03-30

申请号：US18059753

申请日：2022-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki YABE ,  Yusuke ITO ,  Hiroki KAMITAKE

IPC: H01M4/583 ,  H01M10/0562 ,  C01B32/22

Abstract: A negative electrode active material of the present disclosure includes: a graphite particle having a void inside; and a first solid electrolyte. The void has a void size of 1 nm or more and 300 nm or less. The first solid electrolyte is present in the void. The graphite particle has, for example, a plurality of voids inside. The graphite particle has an average void size, determined by a mercury intrusion method, of, for example, 1 nm or more and 300 nm or less.

公开(公告)号：US20230093244A1

公开(公告)日：2023-03-23

申请号：US18059758

申请日：2022-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki YABE ,  Hiroki KAMITAKE ,  Yusuke ITO

IPC: H01M4/587

Abstract: A solid-state battery of the present disclosure includes: a negative electrode layer including a negative electrode active material; a positive electrode layer; a solid electrolyte layer positioned between the positive electrode layer and the negative electrode layer. The negative electrode active material includes: a graphite particle being an aggregate of a plurality of primary particles including graphite, the graphite particle having a void inside; and a solid electrolyte being present in the void. At least a portion of the void may be filled with the solid electrolyte. The void has a minimum diameter of, for example, 1 nm or more and 70 nm or less.