公开(公告)号：US20220344635A1

公开(公告)日：2022-10-27

申请号：US17762466

申请日：2020-09-16

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Rende SUN ,  Hiroji FUKUI

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62

Abstract: Provided is a negative electrode material for a secondary battery capable of improving cycle characteristics due to charge and discharge of the secondary battery. A negative electrode material for a secondary battery includes a negative electrode active material containing a particle 1 and a first carbon material capable of occluding and releasing alkali metal ions or alkaline earth metal ions; and a conductive aid containing a second carbon material different from the first carbon material, in which the particle 1 has a mother particle 2 including a metal or a metal compound, a covering layer 3 covering at least a portion of a surface 2a of the mother particle 2 and including amorphous carbon, and a conductive material 4 attached directly or indirectly to the surface 2a of the mother particle 2 and having conductivity higher than that of the amorphous carbon.

公开(公告)号：US20220293964A1

公开(公告)日：2022-09-15

申请号：US17625553

申请日：2020-07-10

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Shigekatsu OONISHI ,  Akira NAKASUGA ,  Rende SUN ,  Naoki SASAGAWA

IPC: H01M4/80 ,  H01M4/66 ,  H01G11/32 ,  H01G11/24 ,  H01G11/28

Abstract: Provided is a metal sheet having a carbon material capable of stably exhibiting excellent characteristics when used for an electrode of an electricity storage device. A metal sheet having a carbon material includes a porous metal sheet provided with a transition metal present on a surface and a carbon material of at least one of a carbon fiber and a carbon particle, the carbon material being formed from the porous metal sheet, the carbon material being disposed in a pore of the porous metal sheet.

公开(公告)号：US20210367228A1

公开(公告)日：2021-11-25

申请号：US15734672

申请日：2019-06-07

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Rende SUN ,  Shoji NOZATO ,  Akira NAKASUGA

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M4/58 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525

Abstract: A negative electrode material for a secondary battery is provided that can prevent deterioration of the cycle characteristic during the charge and discharge of the secondary battery and can enhance the initial coulombic efficiency. A negative electrode material for a secondary battery, including: a negative electrode active material containing a metal or a metal compound that can absorb and release an alkali metal ion or an alkaline earth metal ion, and containing a first carbon material that can absorb and release the alkali metal ion or the alkaline earth metal ion; and a conductive auxiliary containing a second carbon material different from the first carbon material, the negative electrode material having a capacity of 400 mAh/g or more, and the second carbon material being partially exfoliated graphite having a graphite structure in which graphite is partially exfoliated.