公开(公告)号：US11552295B2

公开(公告)日：2023-01-10

申请号：US17167141

申请日：2021-02-04

Applicant: NEC CORPORATION

Inventor： Ryota Yuge ,  Mitsuharu Tabuchi ,  Kyousuke Doumae ,  Hideka Shibuya

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: A lithium-manganese composite oxide containing a lithium-iron-manganese composite oxide represented by the composition formula. Li1+x−w(FeyNizMn1−y−z)1−xO2−δ, where 0

公开(公告)号：US20210167382A1

公开(公告)日：2021-06-03

申请号：US17167141

申请日：2021-02-04

Applicant: NEC CORPORATION

Inventor： Ryota YUGE ,  Mitsuharu Tabuchi ,  Kyousuke Doumae ,  Hideka Shibuya

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525

Abstract: A lithium-manganese composite oxide containing a lithium-iron-manganese composite oxide represented by the composition formula. Li1+x−w(FeyNizMn1−y−z)1−xO2−δ, where 0

公开(公告)号：US10164250B2

公开(公告)日：2018-12-25

申请号：US14913892

申请日：2014-08-19

Applicant: NEC Corporation ,  Tanaka Chemical Corporation

Inventor： Kentaro Nakahara ,  Ryota Yuge ,  Noriyuki Tamura ,  Sadanori Hattori ,  Kentaro Kuratani ,  Kyousuke Doumae ,  Hideka Shibuya ,  Mitsuharu Tabuchi

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: There is provided a lithium-iron-manganese-based composite oxide capable of providing a lithium-ion secondary battery which has a high capacity retention rate in charge/discharge cycles and in which the generation of a gas caused by charge/discharge cycles is reduced. A lithium-iron-manganese-based composite oxide having a layered rock-salt structure, wherein at least a part of the surface of a lithium-iron-manganese-based composite oxide represented by the following formula (1) is coated with an inorganic material: LixM1(y-p)MnpM2(z-p)FeqO(2-δ) (1) (wherein 1.05≤x≤1.32, 0.33≤y≤0.63, 0.06≤z≤0.50, 0