MUMBAI, India, Aug. 24 -- Intellectual Property India has published a patent application (202627080520 A) filed by Contemporary Amperex Technology Hong Kong on June 30, 2026, for Negative Electrode Active Material And Preparation Method Therefor, Negative Electrode Sheet, Lithium-Ion Battery, And Electric Device.
Inventors include Bai, Peiming; and Kang, Meng.
The application for the patent was published on August 21, 2026, under issue no. 34/2026.
Abstract: A negative electrode active material and a preparation method therefor, a negative electrode sheet, a lithium-ion battery, and an electric device. The lithium-ion battery comprises one or more battery cells (5), the battery cell (5) comprises a negative electrode sheet, 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, and the negative electrode film layer comprises a negative electrode active material. The negative electrode active material comprises an inner core and a coating layer located on at least part of the surface of the inner core, wherein the inner core comprises graphite, and the coating layer comprises hard carbon; and in the cumulative distribution curve of the R value of the negative electrode active material obtained in the area scanning mode of a laser microscopic confocal Raman spectrometer, from the lower limit, the R value of R50 having a cumulative distribution of 50% is 0.15-0.40. The negative electrode active material can make the battery have both a high energy density, and good dynamic performance and cycle performance.
Disclaimer: Curated by HT Syndication.
