Two-Dimensional SnS2 Nanosheets on Prussian Blue Template for High Performance Sodium Ion Batteries

Abstract

SnS2/PB anode material was synthesized via two steps. First, three-dimensional Prussian Blue (PB) nanostructures were derived from a simple hydrothermal synthesis. After etching with hydrochloric acid (HCl), the PB nanocubes were used as a template for the next step. Two-dimensional SnS2 nanosheets were grown on the PB nanocubes through a facile hydrothermal synthesis, giving rise SnS2/PB hybrid nanoarchitecture. The as prepared SnS2/PB is further employed as the anode of sodium ion batteries (SIBs). The SnS2/PB nanoarchitecture exhibits high capacity, long cycle life and exceptional rate capabilities as an anode of SIBs. In specific, it delivers a capacity of 725.7 mA h g-1 at 50 mA g-1. When cycled through 200 cycles, it achieved a stable cycling capacity of 400 mAh g-1 at 200mA g-1 This enhanced SIB performance further proves that SnS2 has the capabilities and potential as an anode material for SIBs. The stable Na+ storage properties of SnS2/PB was attributed to the synergistic effect among the conductive PB carbon, used as the template in this work. These results obtained potentially paves the way for the development of excellent electrochemical performance with stable performance of SIBs. Keywords: Prussian Blue, Carbon Nanocubes, Tin disulfide, Sodium ion batteries Figure 1