Silicon–Carbon Core–Shell Hollow Nanotubular Configuration High-Performance Lithium-Ion Anodes

摘要: Silicon anode systems, due to their intrinsic high theoretical specific capacity, show tremendous potential in lithium ion batteries (LIBs). Unfortunately, commercial application still remains elusive the cycling-related colossal volume expansion issues following Li alloying and dealloying. Herein, core–shell C@Si@C hollow nanotubes with optimal Si thickness (∼60 nm) showing no microstructural damage during lithiation delithiation processes, have been developed as a stable for LIBs low first-cycle irreversible loss (FIR) of ∼13% areal capacity (∼3 mAhcm–2) first time. The (h-SiNTs) generated via our previously reported high-throughput recyclable, sacrificial MgO wire template fabrication approach. Generation films varying by low-pressure thermal chemical vapor deposition (LPCVD) subsequent etching yields h-SiNTs. Modification/optimization h-SiNT physical characteristics exhibit improved performance L...