公开(公告)号：US20190280300A1

公开(公告)日：2019-09-12

申请号：US16345490

申请日：2017-10-25

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA ,  Noriyuki TAMURA ,  Mika SHIBA

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  H01M4/587 ,  H01M4/133 ,  H01M10/0568 ,  H01M10/0567

Abstract: An electrode for lithium ion secondary batteries, including a porous glass particle and a positive electrode active material or negative electrode active material that is capable of occluding and releasing lithium ions wherein the pore volume of the porous glass particle is from 0.1 ml/g to 2 ml/g, is used to provide a lithium ion secondary battery excellent in a charge rate property.

公开(公告)号：US20190027741A1

公开(公告)日：2019-01-24

申请号：US16070984

申请日：2016-12-19

Applicant: NEC CORPORATION

Inventor： Katsumi MAEDA ,  Sadanori HATTORI

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/42 ,  H01M10/0585

Abstract: Provided are a positive electrode active material capable of inhibiting generation of gases accompanied by charging/discharging, a positive electrode and a lithium secondary cell using the positive electrode active material, and methods for manufacturing the positive electrode active material, the positive electrode, and the lithium secondary cell. The positive electrode active material comprises a coated positive electrode active material having a coating comprising at least one selected from specific phosphonic esters and specific phosphorous triesters.

公开(公告)号：US20180183099A1

公开(公告)日：2018-06-28

申请号：US15324453

申请日：2015-06-11

Applicant: NEC Corporation

Inventor： Shizuka SATO ,  Katsumi MAEDA ,  Noriyuki TAMURA ,  Sadanori HATTORI

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M2/02 ,  C07F9/46 ,  C07F9/6571 ,  C07F9/6568

CPC classification number: H01M10/0567 ,  C07F9/2458 ,  C07F9/46 ,  C07F9/6568 ,  C07F9/6571 ,  C07F9/657154 ,  H01M2/02 ,  H01M2/0287 ,  H01M4/13 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2004/028 ,  H01M2300/0037 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The present invention provides a non-aqueous electrolytic solution comprising a phosphinoamine-based compound represented by formula (1) below and a lithium ion secondary battery comprising the non-aqueous electrolytic solution. By adding the phosphinoamine-based compound to the non-aqueous electrolytic solution, oxidative degradation in the non-aqueous electrolytic solution is suppressed, and thus gas generation is suppressed.

公开(公告)号：US20170271712A1

公开(公告)日：2017-09-21

申请号：US15517260

申请日：2015-09-17

Applicant: NEC Corporation

Inventor： Katsumi MAEDA ,  Sadanori HATTORI ,  Noriyuki TAMURA

IPC: H01M10/0525 ,  H01M4/04 ,  H01M10/0566 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M10/0525 ,  H01M4/04 ,  H01M4/366 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0566 ,  H01M2004/028 ,  Y02T10/7011

Abstract: A positive electrode active material for a lithium ion secondary battery that can suppress gas generation and that can provide a lithium ion secondary battery having a high capacity retention ratio in charge-discharge cycles is provided. The positive electrode active material for a lithium ion secondary battery according to the present exemplary embodiment includes a compound having a layered rock salt structure and represented by LixFesM1(z-s)M2yOδ (wherein 1.05≦x≦1.90, 0.05≦s≦0.50, 0.05≦z≦0.50, 0.33≦y≦0.90, 1.20≦δ≦3.10 and z−s≧0; M1 is at least one element selected from the group consisting of Co and Ni; and M2 is at least one element selected from the group consisting of Mn, Ti and Zr) and a specific 1,3-propanedione derivative.

公开(公告)号：US20170214090A1

公开(公告)日：2017-07-27

申请号：US15328693

申请日：2015-07-01

Applicant: NEC Corporation

Inventor： Katsumi MAEDA

IPC: H01M10/0568 ,  H01M10/0569 ,  H01M10/0562 ,  H01M4/48 ,  H01M4/133 ,  H01M4/525 ,  H01M4/505 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/131

CPC classification number: H01M10/0568 ,  H01M4/131 ,  H01M4/133 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2300/0037 ,  Y02T10/7011

Abstract: A nonaqueous electrolytic solution comprising a nonaqueous solvent, an electrolyte salt comprising a lithium salt, and a difluoroboron complex compound represented by the following general formula (1): wherein R1 and R2 each independently represent a substituted or unsubstituted alkyl group having 1-6 carbon atoms, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a substituted or unsubstituted alkoxy group, and R3 represents a hydrogen atom, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.

公开(公告)号：US20170210764A1

公开(公告)日：2017-07-27

申请号：US15500459

申请日：2015-07-01

Applicant: NEC Corporation

Inventor： Katsumi MAEDA ,  Shizuka SATO ,  Mika HORIE

IPC: C07F7/08 ,  C07C49/753 ,  C07C49/647 ,  C07C49/697 ,  C07D307/46 ,  C07D333/22 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/38 ,  H01M4/587 ,  C07C49/683

CPC classification number: C07F7/0803 ,  C07C49/647 ,  C07C49/683 ,  C07C49/697 ,  C07C49/753 ,  C07C2601/04 ,  C07D307/46 ,  C07D333/22 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0037 ,  Y02T10/7011

Abstract: A nonaqueous electrolytic solution comprising a cyclobutenedione derivative represented by the following general formula (1): wherein R1 represents an organic group having a carbon-carbon double bond or a carbon-carbon triple bond in its structure, and R2 represents an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, a thioalkyl group having 1-6 carbon atoms, a substituted or unsubstituted thioaryl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.