公开(公告)号：US20180151881A1

公开(公告)日：2018-05-31

申请号：US15794475

申请日：2017-10-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takahiro KOMORI ,  Ryogo SAKAMOTO ,  Akihisa TANAKA ,  Kazuki SAIMEN ,  Takuya NISHINUMA ,  Toshio TOKUNE ,  Hidefumi NIKAWA

IPC: H01M4/583 ,  H01M4/66

Abstract: Provided is an electrode for a secondary cell capable of obtaining excellent output values and input values when used in the secondary cell. The electrode for a secondary cell is formed of an electrode mixture layer molded body formed of an active material and at least one of a carbon nanotube and a three-dimensional carbon nanotube fiber bundle skeleton formed of a plurality of carbon nanotubes that intersect one another to form an aggregation, which are in intimate contact with the surface of the active material; and a current collector layered on the electrode mixture layer molded body. The electrode mixture layer molded body includes a first roughened surface, and the current collector includes a second roughened surface. The first roughened surface of the electrode mixture layer molded body and the second roughened surface of the current collector are pressed and attached to each other.

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.