Superior storage performance of carbon nanosprings as anode materials for lithium-ion batteries

摘要: Abstract Carbon nanosprings (CNSs) with spring diameter of ∼140 nm, carbon ring ∼100 nm and pitch distance ∼150 nm, synthesized by using a catalytic chemical vapor deposition technology, have been investigated for potential applicability in lithium batteries as anode materials. The electrochemical results demonstrate that the present CNSs are superior materials rechargeable lithium-ion high-rate capabilities, well long-term cycling life. At current density high 3 A g −1 , can still deliver reversible capacity 160 mA h g which is about six times larger than graphite three multi-wall nanotubes under same density. After hundreds cycles, there no significant loss at both low densities. much improved performances could be attributed to nanometer-sized building blocks unusual spring-like morphology.