▎ 摘　　要

Nanostructured electrode materials have been studied extensively with the aim of enhancing lithium ion and electron transport, lowering the stress caused by their volume changes during the charge/discharge processes of electrodes, and decreasing overpotential of the electrode reactions in lithium ion batteries. In this work, we develop a new synthetic route to high capacity "double-sandwich-like" SnS2-based nanocomposites (i.e., SnS2-reduced graphene oxide, termed as SSG) which can be used as an anode material in LIBs with improved electrochemical properties, such as large initial discharge capacity (1032 mA h g(-1)), high reversible discharge capacity (738 mA h g(-1), or 1421 mA h cm(-3) at 2nd cycle), and excellent cyclability (564 mA h g(-1), or 1087 mA h cm(-3) after 60 cycles, corresponding to similar to 76.5% of the initial reversible capacity), with an excellent coulombic efficiency of similar to 96.9%. The electrochemical reaction mechanism of SnS2 with lithium has been suggested to be the alloy-type storage lithium mechanism.