公开(公告)号：US20200014062A1

公开(公告)日：2020-01-09

申请号：US16454381

申请日：2019-06-27

Applicant: Hitachi, Ltd.

Inventor： Yusuke KAGA ,  Motoyuki HIROOKA ,  Etsuko NISHIMURA ,  Eiji SEKI ,  Shimpei AMASAKI

IPC: H01M10/0562 ,  H01M4/139 ,  H01M4/66 ,  H01M4/36 ,  H01M4/04

Abstract: Provided is a battery cell sheet and a secondary battery that can prevent a variation in an electrolyte composition due to volatilization and do not cause a decrease in battery performance even in a case where a component with high volatility is used. The battery cell sheet includes: an electrode that includes an electrode current collector, and electrode mixture layers respectively formed on both upper and lower surfaces of the electrode current collector; a first semi-solid electrolyte layer and a second semi-solid electrolyte layer that are respectively laminated on upper and lower surfaces of the electrode; a first sealing sheet and a second sealing sheet that respectively adhere to and cover a surface of each semi-solid electrolyte layer opposite to a surface thereof laminated with the electrode, and seal the electrode with both of the first semi-solid electrolyte layer and the second semi-solid electrolyte layer; a non-aqueous solution that is provided between each of the electrode mixture layers of the electrode and each semi-solid electrolyte layer; and a sealing portion that is provided at an end side portion of each of the first sealing sheet and the second sealing sheet.

公开(公告)号：US20180159103A1

公开(公告)日：2018-06-07

申请号：US15831527

申请日：2017-12-05

Applicant: HITACHI, LTD.

Inventor： Kazuaki NAOE ,  Yusuke KAGA ,  Shimpei AMASAKI ,  Makoto ABE ,  Etsuko NISHIMURA ,  Akihiko NOIE

IPC: H01M2/16 ,  H01M10/0569 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0585

CPC classification number: H01M2/166 ,  H01G11/52 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/1673 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585

Abstract: Provided is a secondary battery having better performance. The secondary battery includes: a negative electrode; a positive electrode; an insulating layer; and a structure having pores each configured to carry an electrolyte, in which: the negative electrode and the positive electrode are alternately laminated on each other through intermediation of the insulating layer; and the structure is arranged in a region which is sandwiched between two of the insulating layers and faces at least part of an edge of the positive electrode, and includes a material different from a material of the insulating layer.

公开(公告)号：US20190006678A1

公开(公告)日：2019-01-03

申请号：US15935165

申请日：2018-03-26

Applicant: Hitachi, Ltd.

Inventor： Kazuaki NAOE ,  Yusuke KAGA ,  Shimpei AMASAKI ,  Makoto ABE ,  Etsuko NISHIMURA ,  Akihiko NOIE

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/1399

Abstract: Proposed are a secondary battery, a half cell and a production method of a secondary battery capable of exhibiting the designed battery capacity. In a secondary battery comprising an electrode containing an electrode active material and a binding agent, and an electrolyte, the electrolyte contains an electrolytic solution, the electrode further contains the electrolytic solution, and a binding agent amount on a surface of the electrode active material is smaller than an average of the binding agent amount of the electrode.

公开(公告)号：US20180123162A1

公开(公告)日：2018-05-03

申请号：US15797334

申请日：2017-10-30

Applicant: Hitachi, Ltd.

Inventor： Yusuke KAGA ,  Kazuaki NAOE ,  Shimpei AMASAKI ,  Masashi NISHIKI ,  Makoto ABE ,  Etsuko NISHIMURA ,  Akihiko NOIE

IPC: H01M10/04 ,  H01M10/0525 ,  H01M10/0565 ,  H01M2/02 ,  H01M2/14

CPC classification number: H01M10/0468 ,  H01G11/12 ,  H01G11/56 ,  H01G11/60 ,  H01G11/62 ,  H01G11/76 ,  H01G11/82 ,  H01M2/0277 ,  H01M2/14 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0585 ,  H01M2300/0065

Abstract: Provided is a secondary battery having high utilization efficiency per unit volume. The secondary battery includes: an electrode laminate in which a positive electrode layer and a negative electrode layer are laminated on each other through intermediation of an insulating layer; a pair of support plates configured to sandwich the electrode laminate therebetween; and a column body which is sandwiched between the pair of support plates at both ends thereof and adhered to the pair of support plates.

公开(公告)号：US20160268608A1

公开(公告)日：2016-09-15

申请号：US14982321

申请日：2015-12-29

Applicant: HITACHI, LTD.

Inventor： Etsuko NISHIMURA ,  Takefumi OKUMURA ,  Yoshiyuki TAKAMORI ,  Akihiko NOIE ,  Chieko ARAKI ,  Kazuaki NAOE ,  Shimpei AMASAKI

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/625 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/624 ,  H01M10/052 ,  H01M10/058 ,  H01M2004/021 ,  Y02T10/7011

Abstract: A lithium secondary battery having a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode is constituted by a positive electrode mixture layer containing a positive electrode active material, a binder, and a conductive agent being formed on a positive electrode collector, the negative electrode is constituted by a negative electrode mixture layer containing a negative electrode active material, the binder, and the conductive agent being formed on a negative electrode collector, and the conductive agent contained in both of the positive electrode mixture layer and the negative electrode mixture layer is a fibrous conductive agent or a mixture of the fibrous conductive agent and a particulate conductive agent and an aspect ratio of the fibrous conductive agent is 20 or more.

Abstract translation: 一种具有正极，负极和电解质的锂二次电池，其中，所述正极由含正极活性物质，粘合剂和导电剂的正极合剂层构成，所述正极合剂层形成在正极集电体 负极由在负极集电体上形成的含有负极活性物质，粘合剂和导电剂的负极合剂层构成，并且包含在正极混合层和负极中的导电剂 电极混合层是纤维状导电剂或纤维状导电剂与粒状导电剂的混合物，纤维状导电剂的纵横比为20以上。