公开(公告)号：US20240154180A1

公开(公告)日：2024-05-09

申请号：US18279959

申请日：2022-03-01

Applicant: GS Yuasa International Ltd.

Inventor： Yudai KAWASOE ,  Taisei SEKIGUCHI ,  Ukyo HARINAGA

IPC: H01M10/0587 ,  H01M50/431 ,  H01M50/443

CPC classification number: H01M10/0587 ,  H01M50/431 ,  H01M50/443

Abstract: An energy storage device according to one aspect of the present invention includes an electrode assembly obtained by winding a first separator, a first electrode, a second separator, and a second electrode layered in this order, without including a winding core, where at least a part of the first separator and at least a part of the second separator are bonded to each other at the innermost periphery of the electrode assembly, the first separator includes a layer including inorganic particles, and the layer including the inorganic particles is disposed at the innermost peripheral surface of the electrode assembly.

公开(公告)号：US20230006188A1

公开(公告)日：2023-01-05

申请号：US17784562

申请日：2020-12-15

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Ukyo HARINAGA ,  Masashi TAKANO ,  Kenta UEHIRA ,  Tomonori KAKO

IPC: H01M4/133 ,  H01M4/66 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0587 ,  H01G11/32

Abstract: An energy storage device according to an aspect of the present invention includes: a negative electrode including a negative substrate made of pure aluminum or an aluminum alloy, a conductive layer directly or indirectly layered on the negative substrate and containing a conductive agent, and a negative active material layer containing a negative active material capable of occluding lithium ions at a potential of 0.05 V vs. Li/Li+ or lower; and a positive electrode opposed to the negative electrode and including a positive substrate and a positive active material layer directly or indirectly layered on the positive substrate, and the negative active material layer is layered on the negative substrate and the conductive layer so as to include a region in contact with the negative substrate and a region in contact with the conductive layer.

公开(公告)号：US20200295364A1

公开(公告)日：2020-09-17

申请号：US16765203

申请日：2018-11-21

Applicant: GS Yuasa International Ltd.

Inventor： Sumio MORI ,  Tomonori KAKO ,  Akihiko MIYAZAKI ,  Masashi TAKANO ,  Ukyo HARINAGA

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

Abstract: The present embodiment provides a lithium ion secondary battery including a positive electrode containing LiaNixCoyMzO2 (0.9≤a≤1.2, 0.3≤x≤0.8, 0.2≤y+z≤0.7, where M is a metal element other than Li, Ni, and Co) as a positive active material, and a negative electrode containing non-graphitic carbon as a negative active material. In this lithium ion secondary battery, at a portion where the positive electrode and the negative electrode face each other, a basis weight (P) of the positive active material and a basis weight (N) of the negative active material satisfy a relational expression of 0.65≤P/N≤1.05.