MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202617098102 A) filed by Guangdong Oppo Mobile Telecommunications Corp. on August 13, 2026, for Negative Electrode Active Particle And Preparation Method Therefor, And Negative Electrode Sheet, Battery And Electronic Device.
Inventors include Yu, Pei; Li, Kui; and Tian, Chen.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: Provided in the present application are a negative electrode active particle and a preparation method therefor, and a negative electrode sheet, a battery and an electronic device. The negative electrode active particle of the present application comprises: a skeleton, which has a plurality of pores; and silicon particles, which are located in the plurality of pores, wherein there are gaps between the silicon particles and the inner walls of the pores, and the widths of the gaps range from 0.4 nm to 1 nm. The negative electrode active particle has a first X-ray diffraction pattern, and in the first X-ray diffraction pattern, the gaps and the silicon particles satisfy a relational expression 0.6=Ia/Ib=0.95, wherein Ia is the minimum value of diffraction intensity in the first X-ray diffraction pattern when 2? ranges from 8.8° to 22°, Ib is the intensity of a diffraction peak of Si(111) in the first X-ray diffraction pattern when 2? ranges from 28.2° to 28.5°, and 2? is a diffraction angle. The negative electrode active particle of the present application has a low expansion rate and a high cyclic capacity retention rate.
Disclaimer: Curated by HT Syndication.
