Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 22(2), p. 8431
DOI: 10.1039/c3ta15248k
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A highly stable sodium ion battery anode was prepared by deposition of hydroperoxostannate on graphene oxide from hydrogen-peroxide-rich solution followed by sulfidization and 300 C heat treatment. The material was characterized by electron microscopy, powder X-ray diffraction and X-ray photoelectron spectroscopy which showed that the active material is mostly rhombohedral SnS 2 whose (001) planes were preferentially oriented in parallel to the graphene oxide sheets. The material exhibited >610 mA h g À1 charge capacity at 50 mA g À1 (with >99.6% charging efficiency) between 0 and 2 V vs. Na/Na + electrode, high cycling stability for over 150 cycles and very good rate performance, >320 mA h g À1 at 2000 mA g À1 .