A promising rosy future for supercapacitors. Suitability of MoS${}_2$ hollow nanoroses for supercapacitor electrodes

In this work, we investigate the supercapacitive properties of MoS${}_2$ hollow nano-roses with an open cavity at the centre. The synthesized nano MoS${}_2$ delivered specific capacitance of 180 F g${}^{-1}$ at 1 A g${}^{-1}$, whereas it was around 22 F g${}^{-1}$ for the bulk MoS${}_2$, which was synthesized in the absence of the micelle. The cycling stability was very high and retained 98% up to 500 cycles, 85% after 3500 cycles and 80% of the initial capacity at 5000 cycles. The enhanced specific capacitance and cycling stability of the nano MoS${}_2$ is probably due to its flower-shaped morphology which consist of thin sheets of MoS${}_2$ and with a hollow cavity which increases the accessible surface area and stability, respectively.