In Situ Synthesis of Reduced Graphite Oxide-Li2ZnTi3O8 Composite as a High Rate Anode Material for Lithium-Ion Batteries

Li2ZnTi3O8 (LZTO) and reduced graphite oxide modified Li2ZnTi3O8 which are designated as LZTO@RGO10, LZTO@RGO25 and LZTO@RGO50 anodeswere successfully prepared by a facile and cost effective ball mill assisted solid state method. RGO/ LZTO mass ratioswere selected as 0.1:1, 0.25:1 and 0.5:1, respectively. The effects of RGO content on the crystal lattice, particle morphology and electrochemical properties were investigated. The electrochemical performance of LZTO could be improved by adjusting the content of RGO. Among all the samples, LZTO@RGO25 exhibits excellent electrochemical performance in terms of high capacities (302, 250, 221, 194 and 154 mAh g(-1) at current densities of 0.1, 0.5, 1, 2 and 5C, respectively). Cycling performance measurements show that, LZTO@RGO25 has 200 mAh g(-1) residual capacity compared with that (66 mAh g(-1)) of LZTO after 100 cycles at 1C rate. (c) 2019 The Electrochemical Society.