Simple design of Sn/reduced graphene oxide/carbon nanofibers ternary hybrids for lithium-ion batteries

Abstract

Novel Sn/reduced graphene oxide/carbon nanofibers ternary hybrids have been designed via a facile one-step synthesis process. In the hybrids, Sn nanoparticles, uniformly sandwiched in the layers of reduced graphene oxide, are in good contact with carbon nanofibers. The ternary hybrids have demonstrated superior lithium storage performance to the Sn/reduced graphene oxide and Sn/carbon nanofibers binary hybrids. The reversible capacity of the ternary hybrids is 643 mAh g−1 after 90 cycles. Importantly, electrochemical impedance spectroscopy measurements confirm that the integration of Sn, reduced graphene oxide and carbon nanofibers can reduce the charge transfer resistance effectively.