公开(公告)号：US20240274793A1

公开(公告)日：2024-08-15

申请号：US18566915

申请日：2022-06-08

Applicant: GS Yuasa International Ltd.

Inventor： Ryo Harada

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585

CPC classification number: H01M4/364 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M2004/028 ,  H01M2300/0068

Abstract: An all-solid-state electrochemical device according to one aspect of the present invention includes: a positive active material layer; an isolation layer; and a negative active material layer, in which the positive active material layer includes a sulfur-carbon composite, the sulfur-carbon composite contains sulfur and porous carbon, and the carbon has an average pore size of 0.5 nm or more and 3.0 nm or less and an average particle size of 0.1 μm or more and 30.0 μm or less.

公开(公告)号：US12261290B2

公开(公告)日：2025-03-25

申请号：US17288785

申请日：2019-10-25

Applicant: GS Yuasa International Ltd.

Inventor： Ryo Harada ,  Akira Kishimoto

IPC: H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568

Abstract: A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte, the positive electrode containing, as a positive active material, a lithium transition metal composite oxide having an α-NaFeO2 type crystal structure, a molar ratio of Li to Me, Li/Me of more than 1, Me representing transition metal elements including Ni and Mn or including Ni, Mn, and Co, and a molar ratio of Mn to Me, Mn/Me of 0.40 or more and 0.65 or less, and the nonaqueous electrolyte containing, as an electrolyte salt, LiPF6 and a lithium imide salt.

公开(公告)号：US20250015262A1

公开(公告)日：2025-01-09

申请号：US18711939

申请日：2022-11-21

Applicant: THE SCHOOL CORPORATION KANSAI UNIVERSITY ,  GS Yuasa International Ltd.

Inventor： Takashi Hakari ,  Masashi Ishikawa ,  Chihiro Murata ,  Daisuke Okuda ,  Shinji Ozaki ,  Ryo Harada ,  Atsuro Kondo ,  Tokuo Inamasu

IPC: H01M4/36 ,  H01G11/60 ,  H01M4/02 ,  H01M4/587 ,  H01M10/0569

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode containing a composite of porous carbon and sulfur; and a nonaqueous electrolyte containing a nonaqueous solvent containing an unsaturated cyclic carbonate and a lithium salt, in which a cumulative 70% pore size of the porous carbon is 2.0 nm or more and 7.0 nm or less, a content of the unsaturated cyclic carbonate in the nonaqueous solvent is 10 vol % or more, and a positive electrode potential at an end-of-discharge voltage in normal use is 1.0 V vs. Li/Li+ or less.