Hydrazine hydrate-induced hydrothermal synthesis of MnFe2O4 nanoparticles dispersed on graphene as high-performance anode material for lithium ion batteries

Herein, a MnFe2O4/graphene (MnFe2O4/G) nanocomposite has been synthesized via a facile N2H4 center dot H2O induced hydrothermal method. During the synthesis, N2H4 center dot H2O is employed to not only reduce graphene oxide to graphene, but also prevent the oxidation of Mn2+ in alkaline aqueous solution, thus ensuring the formation of MnFe2O4/G. Moreover, MnFe2O4 nanoparticles (5-20 nm) are uniformly anchored on graphene. MnFe2O4/G electrode delivers a large reversible capacity of 768 mA h g(-1) at 1 A g(-1) after 200 cycles and high rate capability of 517 mA h g(-1) at 5 A g(-1). MnFe2O4/G holds great promise as anode material in practical applications due to the outstanding electrochemical performance combined with the facile synthesis strategy.