Presentation Information

[8p-P01-39]High-capacity design of silicon anodes through particle size reduction and porous structuring

〇(M2)Hidetaka Nomura1, Keisuke Sato1 (1.Tokyo Denki Univ.)

Keywords:

lithium-ion batteries,silicon nanoparticles,porous structure

Silicon (Si) has attracted attention as an anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity. However, capacity degradation caused by internal stress during charge–discharge cycles remains a major challenge. Although the use of small Si particles has successfully suppressed internal stress and improved cycle life, achieving both long-term stability and high capacity has proven difficult. In this study, we fabricated porous silicon nanoparticles (SiNPPs) by reducing particle size and introducing a porous structure on the surface, aiming to increase the specific surface area and thereby enhance capacity.