Hierarchically Interlaced 2D Copper Iodide/MXene Composite for High Thermoelectric Performance

Autor:	Maria Merlyne De Souza, Vaithinathan Karthikeyan, Vaskuri C. S. Theja, Roy A.L. Vellaisamy
Rok vydání:	2021
Předmět:	Materials science business.industry Composite number Condensed Matter Physics Thermoelectric materials Surface energy Thermal conductivity Electrical resistivity and conductivity Thermoelectric effect Figure of merit Optoelectronics General Materials Science MXenes business
Zdroj:	physica status solidi (RRL) – Rapid Research Letters. 16:2100419
ISSN:	1862-6270 1862-6254
DOI:	10.1002/pssr.202100419
Popis:	Hierarchical layered architecture in thermoelectric materials works as an ad hoc methodology for strengthening the unique inherent properties. Here, we demonstrate an excellent thermoelectric behavior in novel 2D copper iodide nanoflakes by compositing with Ti3C2 MXene nanoinclusions. The interlaced architecture of CuI/Ti3C2 composite lifts the electrical conductivity over two orders by efficient charge transport mechanisms. The thermal conductivity of CuI/Ti3C2 composite are reduced by drastic suppression of mid-and high-frequency phonons by interfacial energy barrier scattering. Our structural engineering approach yields a massive power factor of 225 µW m-1 K-2 and a figure of merit value of 0.48 in CuI/5 vol.% Ti3C2 composite. We establish a straightforward approach of tuning the figure of merit in earth-abundant, non-toxic thermoelectric materials to develop future sustainable energy sources.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::579b29930fe1826d06f1314ceee4a998 https://doi.org/10.1002/pssr.202100419 Zobrazit plný text záznamu Plný text