ALEXANDRIA, Va., May 5 -- United States Patent no. 12,620,581, issued on May 5, was assigned to ZHUHAI COSMX BATTERY Co. LTD. (Zhuhai, China).
"Electrode piece and battery" was invented by Shuanghu Zhang (Zhuhai, China), Jian Zhang (Zhuhai, China) and Leiming Sun (Zhuhai, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an electrode piece and a battery. The electrode piece includes a current collector and a functional layer located on a first surface of the current collector, the first surface is provided with a tab, and the functional layer is composed of a normal area away from the tab and a recessed area near the tab, and a thickness of the recessed area is less than a ...