Плазменный синтез кремний-углеродных композитов для анодов литий-ионных аккумуляторов

Abstract

One of the key challenges of modern technology is the development of efficient methods for producing and storing energy. Against the backdrop of the intensive development of a new generation of alternative “green” energy, developments in the field of improving lithium-ion batteries seem relevant and promising. However, since currently used graphite-based anode materials are limited by theoretical specific capacity values (372 mAh/g), the development of new materials for application in lithium-ion battery technology is in high demand. Silicon-based materials with a high theoretical capacity of 4200 mAh/g are being considered as a promising alternative to graphite. However, the practical use of silicon anodes is difficult due to the significant volumetric expansion of silicon (~400 %) during repeated lithiation/delithiation, which leads to instability of the resulting electrode materials. Si-C nanocomposite anode materials have been proposed as a solution due to their high capacity and stability.