公开(公告)号：EP3979363A1

公开(公告)日：2022-04-06

申请号：EP20817719.6

申请日：2020-02-26

申请人： Musashi Energy Solutions Co., Ltd.

发明人： MIYAUCHI, Hiroyuki ,  ANDO, Nobuo

IPC分类号： H01M4/13 ,  H01M4/133 ,  H01M4/48 ,  H01G11/50 ,  H01G11/86 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/058

摘要： The power storage device comprises an electrode assembly including a positive electrode, a separator, and a negative electrode, and an electrolyte solution. The negative electrode comprises a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer comprises a surplus region A not facing the positive electrode active material layer, an end region B facing a region in the positive electrode active material layer, the region extending from an end of the positive electrode active material layer toward a center of the positive electrode active material layer by a length of 5% of a length from the center to the end, and a center region C other than the surplus region A and the end region B. A negative electrode potential VA of the surplus region A and a negative electrode potential VC of the center region C after the positive electrode and the negative electrode are short-circuited satisfy Formulas (1) to (3) below. Formula (1): VA ≤ 2.0 V, Formula (2): VC ≤ 1.0 V, Formula (3): VA/VC ≥ 0.7.

公开(公告)号：EP4024510A1

公开(公告)日：2022-07-06

申请号：EP20857809.6

申请日：2020-06-25

申请人： Musashi Energy Solutions Co., Ltd.

发明人： SUZUKI, Hirobumi ,  KOJIMA, Kenji ,  NAOI, Masaya ,  ANDO, Nobuo ,  YAKUSHIJI, Hiroki ,  AITA, Kazunari ,  YAMAMOTO, Masahiro

IPC分类号： H01M4/139 ,  H01G11/06 ,  H01G11/50

摘要： A doped electrode is manufactured by an electrode manufacturing method. The doped electrode includes an active material doped with an alkali metal. In the electrode manufacturing method, a dope solution is brought into contact with an electrode. The electrode includes a current collector and an active material layer. The active material layer is formed on a surface of the current collector and includes the active material. The dope solution includes an alkali metal ion and flows. In the electrode manufacturing method, for example, the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode.