Multiscale architectures boosting thermoelectric performance of copper sulfide compound.

ABSTRACT: Owing to their high performance and earth abundance, copper sulfides (Cu_2-x S) have attracted wide attention as a promising medium-temperature thermoelectric material. Nanostructure and grain-boundary engineering are explored to tune the electrical transport and phonon scattering of Cu_2-x S based on the liquid-like copper ion. Here multiscale architecture-engineered Cu_2-x S are fabricated by a room-temperature wet chemical synthesis combining mechanical mixing and spark plasma sintering. The observed electrical conductivity in the multiscale architecture-engineered Cu_2-x S is four times as much as that of the Cu_2-x S sample at 800 K, which is attributed to the potential energy filtering effect at the

SUBMITTER: Chen XQ 

PROVIDER: S-EPMC7917539 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature