公开(公告)号：US10003072B2

公开(公告)日：2018-06-19

申请号：US15101792

申请日：2014-11-05

Applicant: NEC Corporation

Inventor： Takehiro Noguchi ,  Makiko Takahashi ,  Shin Serizawa

IPC: H01M4/36 ,  C01G45/12 ,  H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  C01G53/00 ,  H01M4/04 ,  H01M4/50 ,  H01M4/52 ,  H01M10/0525

CPC classification number: H01M4/366 ,  C01G45/1242 ,  C01G53/54 ,  C01P2002/76 ,  C01P2002/85 ,  C01P2004/84 ,  C01P2006/40 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/502 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M10/0525

Abstract: A secondary battery having an improved life characteristics is provided by the use of a positive electrode active material for a secondary battery, comprising (a) a surface layer comprising a lithium metal composite oxide having a spinel crystal structure represented by space group Fd-3m, and (b) an internal portion comprising a lithium metal composite oxide having a spinel crystal structure represented by space group P4332.

公开(公告)号：US09893360B2

公开(公告)日：2018-02-13

申请号：US14646076

申请日：2013-11-19

Applicant: NEC Corporation

Inventor： Hideaki Sasaki ,  Takehiro Noguchi

IPC: H01M4/62 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/13 ,  H01M10/0525 ,  C08L27/06 ,  C08L27/16 ,  H01M4/04 ,  H01M4/02

CPC classification number: H01M4/623 ,  C08L27/06 ,  C08L27/16 ,  C08L2205/02 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/028 ,  Y02T10/7011

Abstract: An electrode for a lithium ion secondary battery comprising a binder comprising a vinyl chloride resin (PVC) and a polyvinylidene fluoride (PVDF), wherein the weight ratio of the PVC and the PVDF is PVC:PVDF=8:2 to 3:7, and at least one of the following (a) and (b) is satisfied: (a) the polymerization degree of the PVC is 900 or more, and (b) the polymerization degree of the PVDF is 5000 or more.

公开(公告)号：US09742041B2

公开(公告)日：2017-08-22

申请号：US15023789

申请日：2014-09-29

Applicant: NEC Corporation

Inventor： Hideaki Sasaki ,  Takehiro Noguchi ,  Yuukou Katou ,  Makiko Takahashi

IPC: H01M4/02 ,  H01M10/42 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/44 ,  H01M16/00 ,  H01M10/615 ,  H02J7/00 ,  H01M10/625 ,  H01M10/657 ,  H01M4/58 ,  H01M4/587 ,  H01M10/46 ,  H01M10/66

CPC classification number: H01M10/4207 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/441 ,  H01M10/46 ,  H01M10/615 ,  H01M10/625 ,  H01M10/657 ,  H01M10/66 ,  H01M16/00 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H02J7/0013 ,  Y02E60/122

Abstract: An object of the present invention is to provide a battery system improved in output characteristics and/or storage characteristic while taking advantage of high energy density of a lithium ion secondary battery comprising a positive electrode containing a positive electrode active material having an operating potential of 4.5 V or more relative to a lithium metal. The present invention relates to a battery system having a first battery consisting of a 5 V-level battery(s), a second battery consisting of a 4 V-level battery(s), and a control system.

公开(公告)号：US09692085B2

公开(公告)日：2017-06-27

申请号：US14356710

申请日：2012-10-26

Applicant: NEC Corporation

Inventor： Makiko Uehara ,  Takehiro Noguchi

IPC: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/58 ,  H01M2/16

CPC classification number: H01M10/0569 ,  H01M2/1613 ,  H01M2/1626 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2300/0034 ,  H01M2300/0037 ,  Y02E60/122 ,  Y02T10/7011

Abstract: It is an object of this exemplary embodiment to provide a lithium ion secondary battery using a positive electrode active material having an operating potential of 4.5 V or more, the lithium ion secondary battery having excellent high temperature cycle characteristics. This exemplary embodiment is a lithium ion secondary battery comprising a positive electrode and a negative electrode capable of intercalating and deintercalating lithium, a separator between the positive electrode and the negative electrode, and an electrolytic solution containing a nonaqueous electrolytic solvent, wherein the positive electrode comprises a positive electrode active material operating at a potential of 4.5 V or more versus lithium, the separator comprises cellulose, a cellulose derivative, or a glass fiber, and the nonaqueous electrolytic solvent comprises a fluorinated solvent.

公开(公告)号：US09461335B2

公开(公告)日：2016-10-04

申请号：US14382429

申请日：2013-02-26

Applicant: NEC Corporation

Inventor： Takehiro Noguchi ,  Hideaki Sasaki ,  Yuukou Katou ,  Makiko Takahashi

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

CPC classification number: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2220/30 ,  H01M2300/0034 ,  H01M2300/004 ,  Y02E60/122

Abstract: There is provided a secondary battery comprising: a positive electrode capable of intercalating and deintercalating a lithium ion; a negative electrode capable of intercalating and deintercalating a lithium ion; and an electrolytic solution, wherein the electrolytic solution comprises: a fluorine-containing cyclic ether compound represented by the following formula (1); and at least one selected from a fluorine-containing chain ether compound or a fluorine-containing phosphate ester compound; wherein R1 to R6 are each independently selected from a hydrogen atom, a fluorine atom, a chlorine atom, or a fluorine-substituted, chlorine-substituted, or unsubstituted alkyl group, and at least one of R1 to R6 is selected from a fluorine atom or a fluorine-substituted alkyl group.

Abstract translation: 提供一种二次电池，包括：能够插入和脱嵌锂离子的正极; 能够插入和脱嵌锂离子的负极; 和电解液，其中所述电解液包含：由下式（1）表示的含氟环醚化合物; 和选自含氟链状醚化合物或含氟磷酸酯化合物中的至少一种; 其中R 1至R 6各自独立地选自氢原子，氟原子，氯原子或氟取代的，氯取代的或未取代的烷基，R 1至R 6中的至少一个选自氟原子 或氟取代的烷基。

公开(公告)号：US09236602B2

公开(公告)日：2016-01-12

申请号：US14391742

申请日：2012-10-12

Applicant: NEC Corporation

Inventor： Makiko Takahashi ,  Takehiro Noguchi ,  Hideaki Sasaki

IPC: H01M4/485 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  H01M4/48 ,  H01M10/0525

CPC classification number: H01M4/131 ,  C01G53/54 ,  C01P2002/52 ,  C01P2006/12 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  Y02E60/122

Abstract: Provided are a positive electrode active material for a lithium ion secondary battery and a secondary battery using the same, by which high discharge energy is obtained at low cost and capacity drop with cycles can be suppressed. A positive electrode active material for a secondary battery according to the embodiment of the present invention is represented by the following formula (I): Lia(FexNiyMn2-x-y-zAz)O4  (I) wherein 0.2

Abstract translation: 提供一种用于锂离子二次电池的正极活性物质和使用该锂离子二次电池的二次电池，能够以低成本获得高放电能量并且可以抑制具有循环的容量下降。 根据本发明的实施方式的二次电池用正极活性物质由下式（I）表示：Lia（FexNiyMn2-xy-zAz）O4（I）其中0.2

公开(公告)号：US20150295277A1

公开(公告)日：2015-10-15

申请号：US14646085

申请日：2013-11-20

Applicant: NEC CORPORATION

Inventor： Makiko Takahashi ,  Takehiro Noguchi

IPC: H01M10/0569 ,  H01M4/58 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  H01M2/0207 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2300/0028 ,  Y02E60/122 ,  Y02P70/54

Abstract: A lithium ion secondary battery which is a non-aqueous electrolyte secondary battery comprising a positive electrode comprising a positive electrode active material capable of absorbing and releasing lithium, and an electrolyte solution comprising a non-aqueous electrolyte solvent, wherein the positive electrode comprises a sulfate group, and the non-aqueous electrolyte solvent comprises a sulfone compound represented by a specified formula.

Abstract translation: 一种锂离子二次电池，其是包含能够吸收和释放锂的正极活性物质的正极和包含非水电解质溶剂的电解质溶液的非水电解质二次电池，其中所述正极包含硫酸盐 非水电解质溶剂包含由特定的式表示的砜化合物。

公开(公告)号：US20150132663A1

公开(公告)日：2015-05-14

申请号：US14382429

申请日：2013-02-26

Applicant: NEC Corporation

Inventor： Takehiro Noguchi ,  Hideaki Sasaki ,  Yuukou Katou ,  Makiko Takahashi

IPC: H01M10/0569 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2220/30 ,  H01M2300/0034 ,  H01M2300/004 ,  Y02E60/122

Abstract: There is provided a secondary battery comprising: a positive electrode capable of intercalating and deintercalating a lithium ion; a negative electrode capable of intercalating and deintercalating a lithium ion; and an electrolytic solution, wherein the electrolytic solution comprises: a fluorine-containing cyclic ether compound represented by the following formula (1); and at least one selected from a fluorine-containing chain ether compound or a fluorine-containing phosphate ester compound; wherein R1 to R6 are each independently selected from a hydrogen atom, a fluorine atom, a chlorine atom, or a fluorine-substituted, chlorine-substituted, or unsubstituted alkyl group, and at least one of R1 to R6 is selected from a fluorine atom or a fluorine-substituted alkyl group.

Abstract translation: 提供一种二次电池，包括：能够插入和脱嵌锂离子的正极; 能够插入和脱嵌锂离子的负极; 和电解液，其中所述电解液包含：由下式（1）表示的含氟环醚化合物; 和选自含氟链状醚化合物或含氟磷酸酯化合物中的至少一种; 其中R 1至R 6各自独立地选自氢原子，氟原子，氯原子或氟取代的，氯取代的或未取代的烷基，R 1至R 6中的至少一个选自氟原子 或氟取代的烷基。

公开(公告)号：US20140138575A1

公开(公告)日：2014-05-22

申请号：US14130056

申请日：2012-06-15

Applicant: NEC CORPORATION

Inventor： Takehiro Noguchi ,  Hideaki Sasaki ,  Makiko Uehara ,  Yuukou Katou

IPC: H01M4/36

CPC classification number: H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: An active material for a secondary battery whose lifetime characteristics are improved is provided. The active material for a secondary battery includes a first active material represented by Lip[M1mM22-m-nM3n]O4, wherein M1 is at least one selected from Ni, Cr, Fe, Co, and Cu; M2 is at least one selected from Mn, Ti, and Si, and contains Mn; M3 is at least one selected from Li, B, Mg, Al, Na, and Ca; and 0≦p, 0

Abstract translation: 提供了寿命特性提高的二次电池用活性物质。 用于二次电池的活性材料包括由Lip [M1mM22-m-nM3n] O4表示的第一活性材料，其中M1是选自Ni，Cr，Fe，Co和Cu中的至少一种; M2是选自Mn，Ti和Si中的至少一种，并含有Mn; M3是选自Li，B，Mg，Al，Na和Ca中的至少一种; 和0＆lt; nlE; p，0