公开(公告)号：WO2019012497A1

公开(公告)日：2019-01-17

申请号：PCT/IB2018/055199

申请日：2018-07-13

Applicant: TODA KOGYO CORP.

Inventor： WATANABE, Hiroyasu ,  SUN, Xiang

IPC: C01G53/00

Abstract: The present invention provides positive electrode active substance particles comprising a lithium nickelate composite oxide which have a high energy density and which are excellent in repeated charge/discharge cycle characteristics upon charging at a high voltage when used in a secondary battery, as well as a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles each comprising: a core particle X comprising a lithium nickelate composite oxide having a layer structure which is represented by the formula of Li 1+a Ni 1-b-c Co b M c O 2 wherein M is at least one element selected from the group consisting of Mn, Al, B, Mg, Ti, Sn, Zn and Zr; a is a number of -0.1 to 0.2 (-0.1 ≤ a ≤ 0.2); b is a number of 0.05 to 0.5 (0.05 ≤ b ≤ 0.5); and c is a number of 0.01 to 0.4 (0.01 ≤ c ≤ 0.4); and a coating compound Y comprising at least one element selected from the group consisting of Al, Mg, Zr, Ti and Si, in which the coating compound Y has an average film thickness of 0.2 to 5 nm, a degree of crystallinity of 50 to 95%, a degree of epitaxy of 50 to 95% and a coating ratio (coverage) of 50 to 95%.

公开(公告)号：EP2581343B1

公开(公告)日：2018-05-30

申请号：EP11792480.3

申请日：2011-06-08

Applicant: Toda Kogyo Corp.

Inventor： WATANABE, Hiroyasu ,  ISHIZAKI, Kazutoshi ,  IMAHASHI, Taiki ,  NAKAMURA, Satoshi ,  SASAKI, Osamu

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

CPC classification number: H01M4/525 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/80 ,  H01M4/505 ,  Y02E60/122 ,  Y02P70/54

Abstract: The present invention aims to provide lithium composite compound particles which can exhibit good cycle characteristics and an excellent high-temperature storage property when used as a positive electrode active substance of a secondary battery, and a secondary battery using the lithium composite compound particles. The present invention relates to lithium composite compound particles having a composition represented by the compositional formula: Li 1+x Ni 1-y-z-a Co y Mn z M a O 2 , in which the lithium composite compound particles have an ionic strength ratio A (LiO - /NiO 2 - ) of not more than 0.5 and an ionic strength ratio B (Li 3 CO 3 + /Ni + ) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer.

公开(公告)号：EP2698351B1

公开(公告)日：2017-12-27

申请号：EP12770752.9

申请日：2012-04-12

Applicant: Toda Kogyo Corp.

Inventor： IMAHASHI, Taiki ,  WATANABE, Hiroyasu ,  KIKUYA, Kazuhiko ,  SADAMURA, Hideaki

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

CPC classification number: C01D15/02 ,  C01G53/42 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/80 ,  H01M4/505 ,  H01M4/525

Abstract: The present invention provides lithium composite compound particles having good high-temperature storage property and excellent cycle characteristics as an active substance for a non-aqueous electrolyte secondary battery, and a secondary battery using the lithium composite compound particles. The Li-Ni composite oxide particles for a non-aqueous electrolyte secondary battery according to the present invention have a BET specific surface area of 0.05 to 0.8 m 2 /g; an atomic ratio (Ma/Ni) of a concentration of an amphoteric metal to a concentration of Ni on an outermost surface of the respective Li-Ni composite oxide particles is 2 to 6; and the concentration of the amphoteric metal on the outermost surface of the respective Li-Ni composite oxide particles is higher than a concentration of the amphoteric metal at a position spaced by 50 nm from the outermost surface toward a center of the respective Li-Ni composite oxide particles.

公开(公告)号：EP2368851B1

公开(公告)日：2018-05-16

申请号：EP09830210.2

申请日：2009-12-03

Applicant: Toda Kogyo Corp.

Inventor： WATANABE, Hiroyasu ,  IMAHASHI, Taiki ,  KIKUYA, Kazuhiko ,  TAGAMI, Nobuyuki ,  SADAMURA, Hideaki

IPC: H01M4/525 ,  C01G53/00 ,  H01M10/052 ,  H01M4/1391 ,  H01M10/0566

CPC classification number: H01M4/525 ,  C01G53/42 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/1391 ,  H01M10/052 ,  H01M10/0566 ,  Y02E60/122 ,  Y02P70/54

Abstract: The present invention relates to lithium composite compound particles having a composition represented by the formula: Li 1+x Ni 1-y-z Co y M z O 2 (M = B or Al), wherein the lithium composite compound particles have an ionic strength ratio A (LiO - /NiO 2 - ) of not more than 0.3 and an ionic strength ratio B (Li 3 CO 3 + /Ni + ) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer. The lithium composite compound particles of the present invention can be used as a positive electrode active substance of a secondary battery which has good cycle characteristics and an excellent high-temperature storage property.

公开(公告)号：EP3761414A1

公开(公告)日：2021-01-06

申请号：EP19760971.2

申请日：2019-03-01

Applicant: Toda Kogyo Corp.

Inventor： WATANABE, Hiroyasu ,  SUN, Xiang ,  FETTERER, Mitchell

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/36 ,  H01M4/505 ,  H01M10/052

Abstract: The present invention provides positive electrode active substance particles comprising a lithium nickelate composite oxide which have a high energy density and are excellent in repeated charge/discharge cycle characteristics when charging at a high voltage, as well as a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles each comprising a core particle X comprising a lithium nickelate composite oxide having a layer structure which is represented by the formula: Li 1+a Ni 1-b-c Co b M c O 2
wherein M is at least one element selected from the group consisting of Mn, Al, B, Mg, Ti, Sn, Zn and Zr, a is a number of -0.1 to 0.2 (-0.1 ≤ a ≤ 0.2), b is a number of 0.05 to 0.5 (0.05 ≤ b ≤ 0.5) and c is a number of 0.01 to 0.4 (0.01 ≤ c ≤ 0.4); and a coating compound Y comprising at least one element selected from the group consisting of Al, Mg, Zr, Ti and Si and having an average film thickness of 0.2 to 5 nm, in which a crystal phase having a layered rock salt structure and comprising Ni 2+ ions is present in the form of a layer between the core particle X and the coating compound Y.