公开(公告)号：US20240356024A1

公开(公告)日：2024-10-24

申请号：US18763316

申请日：2024-07-03

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takasumi SAITO ,  Natsuki OTANI ,  Takuya HASEGAWA

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02

CPC classification number: H01M4/525 ,  C01G53/50 ,  C01P2002/50 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

Abstract: According to one embodiment, provided is an electrode including an active material-containing layer containing an active material. The active material includes a lithium-nickel-cobalt-manganese composite oxide having an average primary particle diameter of 2 μm or more and 7 μm or less. A specific surface area SBET of the active material-containing layer according to a N2 gas adsorption method and a pore specific surface area SHg of the active material-containing layer according to a mercury intrusion method satisfy a relationship of 0.8

公开(公告)号：US20230361292A1

公开(公告)日：2023-11-09

申请号：US18338524

申请日：2023-06-21

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takuya HASEGAWA ,  Natsuki OTANI ,  Naoki NISHIO

IPC: H01M4/131 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/525 ,  H01M2004/021

Abstract: According to one embodiment, an electrode includes an active material-containing layer including single particles of an active material represented by a following formula (1) and a conductive agent. In a cumulative distribution of circularity of unit particles which include the single particles and the conductive agent, an average circularity at 25% in the cumulative distribution is 0.05 to 0.60, and an average circularity at 90% in the cumulative distribution is 0.3 to 0.85. A porosity of the active material-containing layer is 10% to 25%:
LiaNi (1-b-c-d) CObMncMdaO2 (1), where 1 ≤ a ≤ 1.2, 0 ≤ b ≤ 0.4, 0 ≤ c ≤ 0.4, 0 ≤ d ≤ 0.1, and M is one or more elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, Y, B, Mo, Nb, Zn, Sn, Zr, Ga, and V.

公开(公告)号：US20230352682A1

公开(公告)日：2023-11-02

申请号：US18351773

申请日：2023-07-13

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Natsuki OTANI ,  Naoki NISHIO ,  Takuya HASEGAWA ,  Ryo HARA

IPC: H01M4/525 ,  G01N23/2055 ,  H01M10/0569 ,  H01M10/0567

CPC classification number: H01M4/525 ,  G01N23/2055 ,  H01M10/0569 ,  H01M10/0567 ,  H01M2004/028

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery. A positive electrode includes a lithium nickel cobalt manganese composite oxide represented by LixNi1-y-zCoyMnzO2; 0

公开(公告)号：US20230361269A1

公开(公告)日：2023-11-09

申请号：US18351802

申请日：2023-07-13

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Natsuki OTANI ,  Takuya HASEGAWA

IPC: H01M4/131 ,  H01M4/525

CPC classification number: H01M4/131 ,  H01M4/525 ,  H01M2004/021

Abstract: According to one embodiment, provided is an electrode including an active material-containing layer. The active material-containing layer contains composite material particles that include active material particles containing a lithium nickel cobalt manganese composite oxide, an electro-conductive agent, and a binder. A strength ratio A/B of a breaking strength A of the composite material particles to a breaking strength B of the active material particles is within a range of 0.01 to 0.1. A density of the active material-containing layer is within a range of 3.2 g/cm3 to 3.8 g/cm3.