公开(公告)号：US20230092036A1

公开(公告)日：2023-03-23

申请号：US18059141

申请日：2022-11-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki YABE ,  Akihiko SAGARA

IPC: H01M10/056 ,  H01M10/0585 ,  H01M4/62 ,  C08G65/336 ,  C08J9/28 ,  C08K5/43

Abstract: A solid electrolyte of the present disclosure includes: a porous dielectric having a plurality of pores interconnected; and an electrolyte including a metal salt and at least one selected from the group consisting of an ionic compound and a bipolar compound and at least partially filling an interior of the plurality of pores. The porous dielectric includes a polyether structure. The plurality of pores have an average pore diameter of 20 nm or more and 100 nm or less.

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.