公开(公告)号：US20220311047A1

公开(公告)日：2022-09-29

申请号：US17545091

申请日：2021-12-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nobuyoshi YASHIRO ,  Shoichi SUGATA

IPC: H01M10/0562 ,  H01M4/133 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525

Abstract: An all-solid secondary battery includes a cathode layer, an anode layer having an anode current collector and an anode active material layer on the anode current collector, and a solid electrolyte layer between the cathode layer and the anode layer, wherein the solid electrolyte is an oxide, phosphate, borate, sulfate, an oxynitride, or a combination thereof, and a binding strength between the anode and the solid electrolyte layer is in a range of about 14 millinewtons per millimeter to about 100 millinewtons per millimeter, and a film strength of the anode active material layer is in a range of about 16 megapascals to about 85 megapascals.

公开(公告)号：US20230238510A1

公开(公告)日：2023-07-27

申请号：US17949365

申请日：2022-09-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nobuyoshi YASHIRO ,  Shoichi SUGATA

IPC: H01M4/134 ,  H01M10/0562 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M4/134 ,  H01M10/0562 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/625 ,  H01M2004/021

Abstract: A solid secondary battery includes: a positive electrode; a negative electrode; and a solid electrolyte disposed between the positive electrode and the negative electrode, wherein the negative electrode includes a negative electrode current collector, and a negative active material layer between the negative electrode current collector and the solid electrolyte, the negative active material layer includes a particulate carbon and a negative active material that forms an alloy or a compound with lithium, a content of the negative active material per unit area of the negative active material layer is about 0.01 milligram per square centimeter or to about 1 milligram per square centimeter, and a film strength of the negative active material layer is about 50 megapascals to about 250 megapascals.