US Patent Issued to Ningde Amperex Technology on Aug. 18 for "Secondary battery and electronic device" (Chinese Inventor)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,712,187, issued on Aug. 18, was assigned to Ningde Amperex Technology Ltd. (Ningde City, China).

"Secondary battery and electronic device" was invented by Meifeng Chen (Ningde, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A secondary battery includes a positive electrode plate. The positive electrode plate includes a current collector and a positive active material layer. The positive active material layer includes a positive active material and a carbon material. The carbon material includes carbon nanotube bundles with a ratio of an average length of the carbon nanotube bundles to an average diameter of the carbon nanotube bundles being in a r...