Figure 2 : Synthesis and characterization of sulphur–TiO2 yolk–shell nanostructures.

From: Sulphur–TiO2 yolk–shell nanoarchitecture with internal void space for long-cycle lithium–sulphur batteries

Figure 2

(a) Schematic of the synthetic process that involves coating of sulphur nanoparticles with TiO2 to form sulphur–TiO2 core–shell nanostructures, followed by partial dissolution of sulphur in toluene to achieve the yolk–shell morphology. (b) SEM image and (c) TEM image of as-synthesized sulphur–TiO2 yolk–shell nanostructures. (b) Scale bar, 2 μm. (c) Scale bar, 1 μm. Through large-ensemble measurements, the average nanoparticle size and TiO2 shell thickness were determined to be 800 and 15 nm, respectively.