公开(公告)号：US20210288323A1

公开(公告)日：2021-09-16

申请号：US17196985

申请日：2021-03-09

Applicant: HONDA MOTOR CO., LTD.

Inventor： Makiko TAKAHASHI ,  Tomohiro KINOSHITA ,  Kiyoshi TANAAMI ,  Shintaro AOYAGI ,  Takashi MUKAI ,  Yuta IKEUCHI ,  Taichi SAKAMOTO ,  Naoto YAMASHI TA

IPC: H01M4/58

Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode material which can improve a battery life as compared with a conventional one, a non-aqueous electrolyte secondary battery negative electrode including such a negative electrode material and a non-aqueous electrolyte secondary battery including such a negative electrode. A non-aqueous electrolyte secondary battery negative electrode material that includes a negative electrode active material formed of a silicon-based material a skeleton-forming agent including a silicate having a siloxane bond and an interface layer formed in an interface between the negative electrode active material and the skeleton-forming agent and formed of an inorganic material, a non-aqueous electrolyte secondary battery negative electrode including it and a non-aqueous electrolyte secondary battery are provided.

公开(公告)号：US20210257622A1

公开(公告)日：2021-08-19

申请号：US17163584

申请日：2021-02-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kiyoshi TANAAMI ,  Yuji ISOGAI ,  Makiko TAKAHASHI ,  Shintaro AOYAGI

IPC: H01M4/66 ,  H01M4/36 ,  H01M10/0525 ,  H01M50/54

Abstract: Provided are an electrode for lithium ion secondary batteries which is an electrode for obtaining a lithium ion secondary batteries having high energy density with foam metal as the collector, and further being able to improve durability and input/output characteristics (output density), as well as a lithium ion secondary battery made using this electrode for lithium ion secondary batteries. The electrode layer of the electrode for lithium ion secondary batteries using a collector consisting of foam metal is configured by dividing into a plurality of electrode divided parts, whereby the migration distance of electrons and migration distance of ions in each of the electrode divided parts is shortened.

公开(公告)号：US20220246944A1

公开(公告)日：2022-08-04

申请号：US17581860

申请日：2022-01-22

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kiyoshi TANAAMI ,  Toshimitsu TANAKA ,  Yuji ISOGAI ,  Masahiro OHTA ,  Takuya TANIUCHI

IPC: H01M4/76 ,  H01M4/36

Abstract: Provided is an electrode for lithium ion secondary batteries in which an electrode material mixture is packed in porous metal, which electrode has excellent penetration of electrolyte solution and improved ion diffusivity. The electrode for lithium ion secondary batteries includes a current collector made of porous metal; and an electrode layer including an electrode material mixture including at least an electrode active material, in which the current collector is filled with the electrode material mixture, the current collector has an intermediate region and two surface regions in its thickness direction and m the electrode layer, the intermediate region has a porosity lower than that of the two surface region, and the intermediate region is filled with a first electrode active material, and the two surface regions are filled with a second electrode active material having a particle size larger than that of the first electrode active material.

公开(公告)号：US20220246904A1

公开(公告)日：2022-08-04

申请号：US17585585

申请日：2022-01-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshimitsu TANAKA ,  Kiyoshi TANAAMI ,  Takashi MUKAI ,  Yuta IKEUCHI ,  Taichi SAKAMOTO ,  Naoto YAMASHITA

IPC: H01M4/134 ,  H01M4/62 ,  H01M4/66

Abstract: To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which the structural deterioration of the electrode is suppressed and cycle characteristics can be improved by absorbing the expansion and contraction of a silicon-based active material placed in the inside of a current collector made of porous metal, and a nonaqueous electrolyte secondary battery including the same. A negative electrode for nonaqueous electrolyte secondary batteries, having a current collector made of porous metal, and a negative electrode material placed in pores of the porous metal, the negative electrode material including a negative electrode active material including a silicon-based material; a skeleton forming agent including a silicate having a siloxane bond; a conductive additive; a binder; and a fibrous material.

公开(公告)号：US20220231288A1

公开(公告)日：2022-07-21

申请号：US17578467

申请日：2022-01-19

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kiyoshi TANAAMI ,  Toshimitsu TANAKA ,  Yuji ISOGAI ,  Shintaro AOYAGI ,  Takuya TANIUCHI ,  Toshiyuki ARIGA

IPC: H01M4/38 ,  H01M4/66 ,  H01M4/80

Abstract: To provide a nonaqueous electrolyte secondary battery negative electrode which enables suppressing durability deterioration, improving cycle durability and energy density, and suppressing the rupture of the conductive paths of a current collector comprising a porous metal body in a region which is the boundary between a coated region with an electrode mixture and an uncoated region (electrode mixture boundary region) and a nonaqueous electrolyte secondary battery comprising the same. A nonaqueous electrolyte secondary battery negative electrode, comprising: a current collecting foil; a pair of current collectors disposed in contact with both surfaces of the current collecting foil and comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, wherein the negative electrode material comprises: a negative electrode active material comprising a silicon-based material; a skeleton-forming agent containing a silicate having a siloxane bond; a conductive auxiliary; and a binder.

公开(公告)号：US20210111411A1

公开(公告)日：2021-04-15

申请号：US17069841

申请日：2020-10-13

Applicant: HONDA MOTOR CO., LTD. ,  SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Kiyoshi TANAAMI ,  Yuji ISOGAI ,  Shintaro AOYAGI ,  Hideki SAKAI ,  Kazuki OKUNO ,  Akihisa HOSOE ,  Kikuo SENOO ,  Hiroshi TAKEBAYASHI

IPC: H01M4/66 ,  H01M4/80 ,  H01M4/139 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

Abstract: To provide an electrode for lithium ion secondary batteries, and a lithium ion secondary battery made using this electrode for lithium ion secondary batteries, which can sufficiently secure electron conductivity between a foam metal body and an electrode active material in an electrode for lithium ion secondary batteries which establish a foam metal body as the collector, reduce the resistance of a lithium ion secondary batter, and improve the durability.
A carbon layer consisting of carbon material is disposed on a surface of a foam porous body consisting of metal, and used as a collector. More specifically, an electrode for lithium ion secondary batteries includes a collector, and an electrode mixture filled into the collector, in which the collector is made to have a carbon layer consisting of carbon material on a surface of a foam porous body consisting of metal.

公开(公告)号：US20210111398A1

公开(公告)日：2021-04-15

申请号：US17070935

申请日：2020-10-15

Applicant: HONDA MOTOR CO., LTD. ,  SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Kiyoshi TANAAMI ,  Yuji ISOGAI ,  Shintaro AOYAGI ,  Hideki SAKAI ,  Kazuki OKUNO ,  Akihisa HOSOE ,  Kikuo SENOO ,  Hiroshi TAKEBAYASHI

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/80 ,  H01M4/66 ,  H01M2/16

Abstract: To provide an electrode for lithium ion secondary batteries, and a lithium ion secondary battery made using this electrode for lithium ion secondary batteries, which can suppress an increase in electron resistance of a current collector area, and improve heat dissipation, in an electrode for lithium ion secondary batteries establishing a foam metal body as the collector.
In the electrode for lithium ion secondary batteries made using a foam porous body consisting of metal as a current collector, the electrode shape is rectangular, and a current collector region is made to span at least two adjacent sides.

公开(公告)号：US20180145333A1

公开(公告)日：2018-05-24

申请号：US15730912

申请日：2017-10-12

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshio TOKUNE ,  Takuya NISHINUMA ,  Takahiro KOMORI ,  Kenshi INOUE ,  Kiyoshi TANAAMI ,  Takashi NAKAGAWA

IPC: H01M4/66 ,  H01M4/36 ,  C01B32/16 ,  H01M4/04 ,  H01M4/62 ,  H01M4/76 ,  H01M4/88

Abstract: Provided is an electrode mixture layer capable of reducing internal resistance by use of a carbon nanotube molding. The electrode mixture layer includes an active material and a conductor of carbon nanotubes in close contact with the surface of the active material, and the number density of the carbon nanotubes is 4 tubes/μm or more. The number density is defined as a value obtained by providing measurement lines on a scanning electron microscope image of a surface of the electrode mixture layer at 0.3 μm intervals both longitudinally and laterally, measuring the total number of the carbon nanotubes being in close contact with the surface of the active material and intersecting the measurement lines, and dividing the total number of the carbon nanotubes by the total length of the measurement lines on the active material surface.