Honda Motor Co., Ltd.

Takahiro Komori

Toshio Tokune

Takuya Nishinuma

Takashi Nakagawa

Kiyoshi Tanaami

Akihisa Tanaka

Hidefumi Nikawa

Kazuki Saimen

Ryogo Sakamoto

Kenshi Inoue

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/&#x3bc;m 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 &#x3bc;m 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.

Electrode mixture layer

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.

Electrode for secondary cell

Growing community of inventors

Saitama, Japan

Takahiro Komori