Heteroatom-doped helical carbonaceous nanotubes with ultrafine SnO 2 nanoparticles as an active anode for lithium-ion batteries

@NPSC) is developed as an anode for lithium-ion batteries. The unique skeleton, featuring physical confinement and chemical bonding, effectively suppresses the volume expansion and migration of the active metal, achieving excellent electrochemical performance. It provides a valuable reference for developing conversion-alloying anode materials.