Oleylamine-assisted hydrothermal synthesis of ultrasmall NbO_x nanoparticles and their in situ conversion to NbO_x@C with highly reversible lithium storage

Abstract

NbO_x@C nanoparticles have been successfully synthesized through the oleylamine-mediated hydrolysis of niobium(<sc>v</sc>) chloride and, when tested as anode materials, could deliver about 298 mA h g⁻¹ after 200 cycles at 100 mA g⁻¹.