Nanostructured clathrates and clathrate-based nanocomposites
arXiv:1907.12469 · doi:10.1002/pssa.201532642
The paper investigates how nanostructuring techniques such as melt spinning, ball milling, and the creation of clathrate-based nanocomposites can further lower the lattice thermal conductivity of intermetallic clathrates to improve their thermoelectric performance, and also presents initial results on clathrate nanowires.
Abstract
Intermetallic clathrates are candidate materials for thermoelectric applications above room temperature. Here we explore whether their intrinsically low lattice thermal conductivities can be further reduced by nanostructuring and whether this can further enhance their thermoelectric performance.}{As bulk nanostructuring routes we studied melt spinning and ball milling. To optimize the compaction process and/or stabilize the nanostructure we varied the process parameters, used additives, and studied clathrate-based composites. Initial results on clathate nanowires as simpler model nanostructures are also presented.
19 pages, 28 images