公开(公告)号：US20180069236A1

公开(公告)日：2018-03-08

申请号：US15551853

申请日：2016-02-09

Applicant: NEC Corporation ,  Tanaka Chemical Corporation

Inventor： Ryota YUGE ,  Noriyuki TAMURA ,  Sadanori HATTORI ,  Mitsuharu TABUCHI ,  Kentaro KURATANI ,  Kyousuke DOUMAE ,  Hideka SHIBUYA

IPC: H01M4/36 ,  C01G53/00 ,  C01F17/00 ,  H01M4/525 ,  H01M4/505 ,  H01M4/48 ,  H01M10/0525

CPC classification number: H01M4/366 ,  C01F17/0043 ,  C01G53/44 ,  C01G53/50 ,  C01P2002/70 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/40 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  Y02T10/7011

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 suppressed. 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 is coated with an oxide of at least one metal selected from the group consisting of La, Pr, Nd, Sm and Eu: LixM1(y-p)MnpM2(z-q)FeqO(2-δ) wherein 1.05≦x≦1.32, 0.33≦y≦0.63, 0.06≦z≦0.50, 0

公开(公告)号：US20160218360A1

公开(公告)日：2016-07-28

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

CPC classification number: H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  Y02T10/7011

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

Abstract translation: 提供一种锂 - 铁 - 锰基复合氧化物，其能够提供在充电/放电循环中具有高容量保持率的锂离子二次电池，并且其中由充电/放电循环引起的气体的产生减少 。 一种具有层状岩盐结构的锂 - 铁 - 锰基复合氧化物，其中由下式（1）表示的锂 - 铁 - 锰基复合氧化物的至少一部分表面被无机 材料：LixM1（yp）MnpM2（zp）FeqO（2-δ）（1）（其中1.05≤x≤1.32,0.33≤y≤0.63,0.06≤z≤0.50,0≤p≤0.63,0.06≤q≤0.50 ，0≤δ≤0.80，y≥p，z≥q; M1为选自Ti和Zr中的至少一种元素; M2为选自Co，Ni和Mn中的至少一种元素）。

公开(公告)号：US20160380263A1

公开(公告)日：2016-12-29

申请号：US15113679

申请日：2015-01-26

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED ,  TANAKA CHEMICAL CORPORATION

Inventor： Tetsuri NAKAYAMA ,  Kenji TAKAMORI ,  Kyousuke DOUMAE ,  Takashi KITAMOTO

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

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30

Abstract: A positive electrode active material for a lithium secondary battery, comprising a lithium-containing composite metal oxide in the form of secondary particles formed by aggregation of primary particles capable of being doped and undoped with lithium ions, each of the secondary particles having on its surface a coating layer, the positive electrode active material satisfying the following requirements (1) to (3):(1) the metal oxide has an α-NaFeO2 type crystal structure of following formula (A): Lia(NibCocM11-b-c)O2  (A) wherein 0.9≦a≦1.2, 0.9≦b

Abstract translation: （3）活性物质的平均二次粒径为2〜20μm，BET比表面积为0.1〜2.5m 2 / g，1.0〜2.0的活性物质的密度/未封装密度比 。

公开(公告)号：US20170237069A1

公开(公告)日：2017-08-17

申请号：US15518471

申请日：2015-10-13

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED ,  TANAKA CHEMICAL CORPORATION

Inventor： Kenji TAKAMORI ,  Hiroyuki KURITA ,  Yuichiro IMANARI ,  Daisuke YAMASHITA ,  Kimiyasu NAKAO ,  Kyousuke DOUMAE

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

CPC classification number: H01M4/525 ,  C01G53/00 ,  C01G53/50 ,  C01P2002/60 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode active material, which has a crystallite size α/crystallite size β ratio (α/β) of 1 to 1.75 or less, wherein the crystallite size α is within a peak region of 2θ=18.7±1° and the crystallite size β is within a peak region of 2θ=44.6±1°, each determined by a powder X-ray diffraction measurement using Cu-Kα ray, and has a composition represented by formula (I) below: Li[Lix(NiaCobMncMd)1-x]O2  (I) wherein 0≦x≦0.2, 0.3

公开(公告)号：US20200006768A1

公开(公告)日：2020-01-02

申请号：US16482126

申请日：2018-01-31

Applicant: NEC CORPORATION

Inventor： Ryota YUGE ,  Mitsuharu TABUCHI ,  Kyousuke DOUMAE ,  Hideka SHIBUYA

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

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