Sunrise New Energy Co. Ltd. announced the publication of a patent application titled "Spherical Hard Carbon Composite Material and Its Preparation Method" (patent number CN2025106204848). The invention focuses on hard carbon composite anode materials designed for low-temperature energy storage batteries, particularly sodium-ion batteries. The technology aims to address challenges such as reduced efficiency and capacity degradation under low-temperature and high-rate conditions by optimizing the carbon structure and improving conductivity and ion diffusion. The company plans to continue with engineering validation, performance testing, and efforts toward commercialization of the new battery material.