Supported SnS2 Nanosheet Arrays on Ni Foam for Supercapacitors

Layered metal sulfides are regarded as potential candidates for supercapacitive electrode materials due to the unique spatial dimensions for charge transport. Herein, self-supported SnS2 nanosheet arrays on nickel (Ni) foam were successfully fabricated via a facile solvothermal approach. Interestingly, the continuous and high-density SnS2 nanosheet arrays are interconnected to form porous Ni@SnS2 electrode materials, which suppress the self-aggregation of SnS2 and provide outstanding conductivity with 3D-networked Ni framework. The Ni@SnS2 electrode demonstrates a high areal specific capacitance of 1965.56 mF cm-(2) at a current density of 1 mA cm-(2) and satisfactory cycling stability (78.3% capacity retention after 10,000 cycles). This self-supported porous structure provides a promising way to build advanced electrode material for supercapacitors.