Toyota Jidosha Kabushiki Kaisha

Panasonic Corporation

Panasonic Holdings Corporation

Kohei Kintsu

Takashi Ko

Natsumi Goto

Sho Tsuruta

Ryo Hanazaki

Keiichi Takahashi

Akira Tsujiko

Fumiharu Niina

Disclosed is a non-aqueous electrolyte secondary battery positive electrode that includes a positive electrode core and a positive electrode mixture layer disposed on the positive electrode core. The positive electrode mixture layer contains a positive electrode active material and carbon nanotubes. The positive electrode active material contains a lithium transition metal composite oxide (I) that either comprises secondary particles that are aggregates of primary particles having an average particle size of 1 μm or greater, or is substantially composed of single particles, the lithium transition metal composite oxide (I) having a volume-based median diameter of 0.6 μm to 6 μm, and a lithium transition metal composite oxide (II) that comprises secondary particles that are aggregates of primary particles having an average particle size of less than 1 μm, the lithium transition metal composite oxide (II) having a volume-based median diameter of 3 μm to 25 μm.

Non-aqueous electrolyte secondary battery positive electrode and non-aqueous electrolyte secondary battery

A positive electrode material consists of composite particles. Each of the composite particles includes a base material particle, a film, and a carbon nanotube. The film covers at least a part of a surface of the base material particle. The base material particle includes a positive electrode active material. The film includes a boron oxide. The carbon nanotube includes a first portion and a second portion. The first portion is buried in the film. The second portion is exposed on a surface of the film.

Positive electrode material, non-aqueous electrolyte secondary battery, and method of producing positive electrode material

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Osaka, Japan

Kohei Kintsu