公开(公告)号：US20230299278A1

公开(公告)日：2023-09-21

申请号：US17823699

申请日：2022-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Yasunobu YAMASHITA ,  Yorikazu YOSHIDA ,  Kakuya UEDA ,  Norio TAKAMI

IPC: H01M4/485 ,  H01M10/052

CPC classification number: H01M4/485 ,  H01M10/052 ,  H01M2004/028

Abstract: In general, according to one embodiment, an active material including particles containing a niobium-containing oxide is provided. The particles containing the niobium-containing oxide contain single particles having protruded parts and recessed parts. Three or more of the recessed parts satisfy 0.1≤a/L≤0.5 (1). Where L is a length of a tangent line in contact with a first protruded part and a second protruded part, and a is a maximum length of a perpendicular line from the tangent line to a recessed part defined by the first protruded part and the second protruded part.

公开(公告)号：US20220344651A1

公开(公告)日：2022-10-27

申请号：US17652727

申请日：2022-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kakuya UEDA ,  Yasunobu YAMASHITA ,  Yasuhiro HARADA ,  Norio TAKAMI ,  Shinsuke MATSUNO

IPC: H01M4/485 ,  H01M4/131 ,  H01M10/42 ,  H01M4/1391 ,  H01M50/296 ,  H01M50/209 ,  B60L50/60 ,  B60L53/20

Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector and an active material-containing layer formed on the current collector and containing active material particles. A median diameter (D50) calculated from a volume-based frequency distribution chart obtained by a laser diffraction/scattering method for the active material particles is in the range of 1.2 μm to 4.0 μm. In the frequency distribution chart, a proportion of an integrated amount of particles having a particle size of 2.0 μm or less is in the range of 36% to 62% with respect to the entire active material particles on a volume basis.