"Nanoskeleton" Si-SiO_x/C Anodes toward Highly Stable Lithium-Ion Batteries.

ABSTRACT: A fragile solid-electrolyte interphase (SEI) layer due to the volume expansion of silicon cannot sufficiently prevent side reactions and electrolyte consumption and restricts the application of silicon anodes in lithium-ion batteries with high cycling stability. Herein, a carbon nanotube (CNT) supported "nanoskeleton" structure with robust mechanical properties and improved conductive pathways is designed by twining CNTs with in situ grown SiO_x/C and carbon-wrapped Si nanoparticles. The CNT "nanoskeleton" can improve electrical contact between particles, promoting the formation of a denser and more homogeneous SEI layer. Moreover, the buffer region granted by the CNTs can tolerate the volume expansions of Si, avoiding the repeated destruction of the SEI layer durin

SUBMITTER: Guan X 

PROVIDER: S-EPMC11843606 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature