Mitsubishi Electric Corporation

Prime Planet Energy & Solutions, Inc.

Kentaro Tsukamoto

Shinichi Kato

Masaaki Kadoyanagi

Shotaro Hirako

Hiroyuki Kato

Tetsuya Okuda

Masahiro Ichikawa

Hanako Kondo

Yasuhiro Suzuki

Atsuki Tachibana

Kenichi Oi

Taku Kondo

Koji Uchimura

Emiko Yamada

Yusuke Ueda

Satoshi Akatsuka

Yoshifumi Magari

Takumi Aikawa

Motor driver for a conveyor system

Servo amplifier

According to the present disclosure, a technique capable of suppressing an internal short circuit caused by a peeled metal piece and obtaining a safer secondary battery is provided. An electrode plate (negative electrode plate) disclosed herein includes a negative electrode core including copper or a copper alloy, a negative electrode active material layer applied to a surface of the negative electrode core, and a negative electrode tab protruding to the outside from one end side in a width direction. In the negative electrode plate, a first region having an oxide film having a thickness of 40 nm to 200 nm is formed in a region of 0.01 mm to 0.2 mm from an outer end side of the negative electrode tab toward the inside in the width direction, and the first regionextends along the outer end sideof the negative electrode tab. As a result, a metal piece that can be peeled off from the negative electrode tabcan be insulated and inactivated in advance, so that an internal short circuit due to the peeled metal piece can be suppressed.

Electrode plate and secondary battery

Growing community of inventors

Tokyo, Japan

Kentaro Tsukamoto