This technology relates to a positive electrode active material used in lithium secondary batteries, and concerns the ability to apply the above-described manufacturing method and the high-stability silicon positive electrode active material to lithium secondary batteries. In particular, it is a technology designed to simultaneously enhance performance, durability, stability, and applicability based on the silicon-based anode material, the manufacturing method thereof, and the core materials, structures, processes, or device configurations related to lithium secondary batteries containing the same.
It aims to solve the problems of volume expansion and particle breakage in silicon anode materials that limit their actual application in lithium-ion batteries. Accordingly, this technology applies a core means comprising a method for manufacturing the silicon anode material, which includes the steps of manufacturing a silicon-based active material, synthesizing the conductive polymer polyaniline, and forming the coating layer on the surface of the active material. It proposes a technology concept that utilizes the layered structure of polyaniline to form a stable solid electrolyte interface, which prevents thickening and effectively suppresses volume expansion and contraction problems.
Accordingly, the present invention is expected to improve the stability and fast-charging expansion suppression performance of silicon anode materials, making them suitable for fast-charging conditions, and simultaneously enhance reproducibility, scalability, and process suitability in actual usage environments. Furthermore, since it can be utilized as a high-performance material, device, battery, sensor, apparatus, or manufacturing process in related industries, it is advantageous in terms of subsequent commercialization and demonstration development.
N/A
