公开(公告)号：US20170062811A1

公开(公告)日：2017-03-02

申请号：US14960964

申请日：2015-12-07

Applicant: TDK CORPORATION

Inventor： Masahiro TSUCHIYA ,  Tomohiko HASEGAWA ,  Yuji YAMAMOTO ,  Kazuma AKIMOTO

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38

CPC classification number: H01M4/366 ,  H01M4/38 ,  H01M4/382 ,  H01M4/62 ,  H01M8/0637 ,  H01M10/0525

Abstract: Stabilized lithium powder according to an embodiment of this disclosure contains lithium particles and transition metal. Each lithium particle has a stabilized film on a surface thereof; the stabilized film contains an inorganic compound; and main transition metal, which is contained the most in the transition metal, is contained by 0.5×10−3 wt % or more and 11.5×10−3 wt % or less.

Abstract translation: 根据本公开实施方案的稳定的锂粉末含有锂颗粒和过渡金属。 每个锂颗粒在其表面上具有稳定的膜; 稳定膜含有无机化合物; 在过渡金属中含有最多的主过渡金属的含量为0.5×10 -3重量％以上且11.5×10 -3重量％以下。

公开(公告)号：US20180287146A1

公开(公告)日：2018-10-04

申请号：US15939882

申请日：2018-03-29

Applicant: TDK CORPORATION

Inventor： Hisashi SUZUKI ,  Yuji YAMAMOTO ,  Naoki KUBOTA ,  Yukiko HIRABAYASHI

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M10/0525

Abstract: A lithium powder includes: a core of metallic lithium; and a coating layer coating a surface of at least a part of the core. The coating layer contains lithium carbonate including a surface in at least a part of which lithium oxide is present. The coating layer may include a first coating film layer present in at least a part of the core, and a second coating film layer present in a surface of the first coating film layer. The first coating film layer may contain lithium carbide. The second coating film layer may contain lithium carbonate.

公开(公告)号：US20230102390A1

公开(公告)日：2023-03-30

申请号：US17903069

申请日：2022-09-06

Applicant: TDK Corporation

Inventor： Kazuki MATSUSHITA ,  Yuji YAMAMOTO ,  Takashi MORI

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568

Abstract: This non-aqueous electrolyte may include: a compound represented by Chemical Formula (1). wherein a repeating number n of a unit structure may be an integer in a range of 1 to 7, inclusive.

公开(公告)号：US20220311004A1

公开(公告)日：2022-09-29

申请号：US17699626

申请日：2022-03-21

Applicant: TDK CORPORATION

Inventor： Hiroshi SASAGAWA ,  Yuji YAMAMOTO ,  Kazuki MATSUSHITA ,  Takashi MORI

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/134 ,  C08F216/06 ,  C08F220/12

Abstract: The negative electrode for a lithium ion secondary battery includes: a current collector; and a negative electrode active material layer which is in contact with at least one surface of the current collector, the negative electrode active material layer has a negative electrode active material and a binder, the negative electrode active material contains a material that can be alloyed with Li, the binder contains a predetermined copolymer, and a specific surface area of a surface of the negative electrode active material layer on a side opposite to the current collector side is 7.0 m2/g or more and 16.0 m2/g or less.