公开(公告)号：US12300791B2

公开(公告)日：2025-05-13

申请号：US17279134

申请日：2019-09-26

Applicant: GS Yuasa International Ltd.

Inventor： Taro Yamafuku ,  Kenta Nakai ,  Jun Oyama

IPC: H01M10/0587 ,  H01G11/22 ,  H01G11/52 ,  H01G11/58 ,  H01G11/84

Abstract: Provided is a method for manufacturing an energy storage device including an electrode that has an active material layer, an electrolyte solution, and a case. According to the present embodiment, the method including injecting an electrolyte solution in a predetermined amount into a case is characterized in that the predetermined amount is an amount such that, an alkali metal or an alkaline earth metal at least partially comes into contact with a free electrolyte solution that is the electrolyte solution excluding the electrolyte solution soaking into the electrode assembly in the case, with the case housing therein: the alkali metal or the alkaline earth metal of an ion supply member that has the alkali metal or the alkaline earth metal disposed on a conductive member other than the active material layer; and an electrode assembly including the stacked electrode that has electrical conduction to the conducive member of the ion supply member.

公开(公告)号：US12155060B2

公开(公告)日：2024-11-26

申请号：US17257877

申请日：2019-07-18

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Kazuki Kawaguchi ,  Shota Ito ,  Jun Oyama ,  Taisei Sekiguchi

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562

Abstract: One aspect of the present invention is an energy storage device including a positive electrode containing: first positive active material particles containing a metal element capable of forming a conductive metal oxide; and second positive active material particles not containing the metal element, in which the first positive active material particles include a nickel-cobalt-manganese-containing lithium-transition metal composite oxide containing lithium, nickel, cobalt, and manganese as constituent elements, and the first positive active material particles are larger in median diameter than the second positive active material particles.