公开(公告)号：US20190245173A1

公开(公告)日：2019-08-08

申请号：US16387592

申请日：2019-04-18

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Infrastructure Systems & Solutions Corporation

Inventor： Kazuhiro NAMBA ,  Dai YAMAMOTO ,  Akira YAJIMA

IPC: H01M2/12 ,  H01M4/505 ,  H01M4/36 ,  H01M2/30

CPC classification number: H01M2/12 ,  H01M2/02 ,  H01M2/30 ,  H01M4/13 ,  H01M4/131 ,  H01M4/364 ,  H01M4/366 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122

Abstract: According to one embodiment, a nonaqueous electrolyte secondary battery is provided. The nonaqueous electrolyte secondary battery includes a container member, a negative electrode, a positive electrode, and a nonaqueous electrolyte. The container member is provided with a gas relief structure. The negative electrode includes a negative electrode mixture layer. The negative electrode mixture layer contains a titanium-containing oxide and Mn. Abundance ratios RTi, RMn, RA and RB obtained according to an X-ray photoelectron spectroscopy spectrum of the negative electrode mixture layer satisfy the following relational expressions: 0.01≤RMn/RTi≤0.2 (1); 3≤RA/RMn≤50 (2); and 0.5≤RA/RB≤5 (3).

公开(公告)号：US20210013497A1

公开(公告)日：2021-01-14

申请号：US17025018

申请日：2020-09-18

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tetsuro KANO ,  Yuki WATANABE ,  Kazuhiro NAMBA ,  Hidetoshi WATANABE ,  Keigo HOSHINA

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active-material containing layer that includes active material particles and a binder containing a polymer that contains monomers containing nitrogen atoms. The particle size distribution chart of the electrode obtained by the laser diffraction scattering has peak A and peak B whose particle sizes corresponding to their peak tops are different from each other. The particle size DA corresponding to the peak top of the peak A is smaller than the particle size DB corresponding to the peak top of the peak B. The ratio PA/PB of the frequency PA of the peak top of the peak A and the frequency PB of the peak top of the peak B falls within the range of 0.2 or larger and 1.5 or smaller.

公开(公告)号：US20190221834A1

公开(公告)日：2019-07-18

申请号：US16361968

申请日：2019-03-22

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Infrastructure Systems & Solutions Corporation

Inventor： Ryo HARA ,  Dai YAMAMOTO ,  Kazuhiro NAMBA

IPC: H01M4/1315 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/1315 ,  H01M4/131 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  Y02E60/122 ,  Y02T10/7011

Abstract: According to one embodiment, provided is a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a spinel type lithium-manganese composite oxide and a lithium cobalt oxide, which satisfy formula (1): 0.01≤B/(A+B)