Fig. 4.

Electrochemical properties of few-layered SBS and SBS/C electrodes. Comparison of (a) cycling performance and (b) rate performance of SBS/C (NS-1-E), SBS/C (NS-2-E), and SBS/C (NS-3-E) electrodes, which were exfoliated and collected in ethanol. Comparison of (c) cycling performance and (d) rate performance of layered SBS (NS-1-W), SBS (NS-2-W), and SBS (NS-3-W) electrodes, which were exfoliated and collected in water. e Discharge/charge curves at different cycles of SBS/C (NS-2-E) composite at 50 mA g⁻¹. Ex situ X-ray photoelectron spectroscopy (XPS) of the S 2p peaks of (f) SBS/C (NS-2-E) and (g) bulk SBS electrodes after the 50^th charge. h Rate capabilities of SBS/C electrodes exfoliated with different solvents (E/W = 1:1, E/W = 2:1, E/W = 6:1, E/W = 8:1, E/W = 16:1, E/W = 32:1) obtained at various charge and discharge current densities (at 50, 150, 300, 500, 1000, and 2000 mA g⁻¹) and their cycling performance after rate testing at a current density of 500 mA g⁻¹