Sunrise New Energy granted patent for silicon-carbon composite anode material

Sunrise New Energy (EPOW) has been granted an invention patent titled “Preparation Method of a Mesophase Carbon Microsphere-Silicon Carbon Composite Anode Material”. This newly granted patent represents a major technological breakthrough in solid-state battery anode materials, solidifying Sunrise’s leading position in the field of next-generation solid-state battery technologies and advancing its innovation roadmap in high-performance energy materials. The patented invention discloses an innovative method for preparing mesophase carbon microsphere-silicon carbon composite anode materials. The process involves polymerizing medium-temperature pitch in a reactor to obtain polymerized pitch, followed by sedimentation and centrifugation to produce mesophase carbon microspheres. These microspheres are then modified using plasma technology to create modified mesophase carbon microspheres. An organic solvent containing an organosilane coupling agent and organic lithium salt is prepared, and silicon salts are deposited onto the modified microsphere surface via an electrochemical deposition method, followed by washing and carbonization to yield the final composite material. This patented technology plays a critical role in the development of solid-state batteries.