The reduction of energy consumption is one of the major global objectives due to the global warming and increasing cost related to the conventional fossil fuel sources. To solve these problems, several studies have been done on materials that allow the reduction of heat dissipation by increasing thermal insulation and exploiting the heat for other forms of energy. An interesting approach for this context is nanostructuring. Nanostructured materials are important because they allow the combination of low thermal conductivity with good electrical properties, unlike traditional single materials. Despite a multitude of studies on nanocomposites, a whole understanding of their thermal transport is still missing, therefore the opti??mization for heat management is still very limited.