Electrode for Battery and Battery

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Daiki Maeda of Toyota-shi Aichi-ken JP

Masataka Tomita of Nisshin-shi Aichi-ken JP

Junta Takasu of Nagoya-shi Aichi-ken JP

Yuusuke Shimizu of Kosai-shi Shizuoka-ken JP

Electrode for Battery and Battery

This abstract first appeared for US patent application 18927366 titled 'Electrode for Battery and Battery

Original Abstract Submitted

An electrode for a battery comprises a base material and a negative electrode active material layer. A cross section of the negative electrode active material layer parallel to a thickness direction includes a first region and a second region. In the thickness direction, the first region is interposed between the second region and the base material. The first region includes a first active material and a first binder. The second region includes a second active material and a second binder. Either a set of relationships of “A2<A1” and “B2<B1” or a set of relationships of expressions “A2>A1” and “B2>B1” is satisfied. A1 represents an aspect ratio of the first active material. A2 represents an aspect ratio of the second active material. B1 represents an area fraction of the first binder in the first region. B2 represents an area fraction of the second binder in the second region.