Panasonic Intellectual Property Management Co., Ltd.

Tatsuya Tsushima

Yuma Kamiyama

Ryosuke Iwata

Katsuya Shiozaki

A battery electrode which is one example of an embodiment is provided with a core and an active material layer disposed on the surface of the core. The core has a based part where the core surface is covered by the active material layer and a tab part projecting from the based part. Notches are formed on the core from the base of the tab part to the base part, or at positions where the base part adjoins the tab part. The edge of each notch is formed from a first curve comprising a first arc and either a second curve comprising a second arch having a smaller curvature than the first arc or a straight line. This allows a battery electrode to be provided such that the occurrence of cracks at the base of the tab part of the core and in the vicinity thereof can be sufficiently suppressed.

Growing community of inventors

Hyogo, Japan

Tatsuya Tsushima