이차전지용 음극 소재 기술에 대한 특허 분석

Secondary batteries are the most common type of energy storage device used in portable electronics, electric vehicles, and daily life. The anode material, one of the four core materials of secondary batteries, is a crucial factor in battery capacity and stability. Repeated charge and discharge cycles of lithium-ion batteries result in cracks on the surface and inside the electrode, as well as instability at the electrode-electrolyte interface. This reduces the electron and ion conductivity inside the electrode. This manifests in low battery efficiency and stability. Therefore, significant efforts have been made in recent years to develop secondary battery electrode materials that satisfy commercial needs such as high energy density, light weight, and low cost. This study aims to investigate the current patents for secondary battery anode materials and identify the development trends and prospects of battery anode materials. It will examine patents related to composite materials using silicon. We will reduce the country's high overseas dependence on secondary battery materials. This will make the economy more stable and less volatile. The results of this study will be used by research institutes and companies to establish strategies for the development of next-generation secondary battery materials.