MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202617098992 A) filed by Contemporary Amperex Technology Co. , Limited on August 16, 2026, for Negative Electrode Sheet, Secondary Battery, Electric Device, Hard Carbon Material, And Preparation Method Therefor.
Inventors include Chen, Xiaoxia; Zhang, Xinxin; Liu, Shikun; and Zheng, Xiaoji.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: A negative electrode sheet, a secondary battery, an electric device, a hard carbon material, and a preparation method therefor. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector; the negative electrode film layer comprises a hard carbon material; an X-ray diffraction pattern of the hard carbon material has a diffraction peak at the position where the diffraction angle 2? ranges from 22° to 25°, wherein a line tangent to a first shoulder part on the left side of the diffraction peak and a first shoulder part on the right side of the diffraction peak is a straight line L, a line parallel to the straight line L and tangent to the diffraction peak is a tangent line M, and the intensity corresponding to the point of tangency of the tangent line M serves as B; if the intensity corresponding to an intersection point between a perpendicular line passing through the point of tangency and perpendicular to the horizontal axis serves as A, then 1=B/A=2.5; the saturated water vapor adsorption amount at 25° of the hard carbon material is = 200 cm3/g; and the methylene blue adsorption value of the hard carbon material is = 10 mg/g.
Disclaimer: Curated by HT Syndication.
