The SiS
2
rods exhibit a significant anisotropy property
applied in a special field such as in the one of all-solid-state lithium-ion
batteries and so on. In this work, the orthorhombic SiS
2
rods with high chemical/phase purity were prepared by an elemental
method, either through a boiling or a steaming process, at 1023–1073
K for 3 h and under the saturated S-vapor pressure (2.57–3.83
MPa) in a closed sealed-tube system. The composition, crystal structure,
morphology, and growth mechanism were investigated. Results showed
that the growth orientation of SiS
2
along the <0 0 1>
is intrinsically governed by the crystal structure motif. It could
exist in both processes and the latter tends to show in macroscopic
morphology. Using the pressure-temperature diagram, structure refinement,
pole figures, image analyses, and so forth, factors influencing the
purity and growth of SiS
2
rods were concluded from the
thermodynamics and kinetics viewpoints.
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