We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Compositing effects for high thermoelectric performance of Cu<sub>2</sub>Se-based materials.
- Authors
Zhou, Zhifang; Huang, Yi; Wei, Bin; Yang, Yueyang; Yu, Dehong; Zheng, Yunpeng; He, Dongsheng; Zhang, Wenyu; Zou, Mingchu; Lan, Jin-Le; He, Jiaqing; Nan, Ce-Wen; Lin, Yuan-Hua
- Abstract
Thermoelectric materials can realize direct conversion between heat and electricity, showing excellent potential for waste heat recovery. Cu2Se is a typical superionic conductor thermoelectric material having extraordinary ZT values, but its superionic feature causes poor service stability and low mobility. Here, we reported a fast preparation method of self-propagating high-temperature synthesis to realize in situ compositing of BiCuSeO and Cu2Se to optimize the service stability. Additionally, using the interface design by introducing graphene in these composites, the carrier mobility could be obviously enhanced, and the strong phonon scatterings could lead to lower lattice thermal conductivity. Ultimately, the Cu2Se-BiCuSeO-graphene composites presented excellent thermoelectric properties with a ZTmax value of ~2.82 at 1000 K and a ZTave value of ~1.73 from 473 K to 1000 K. This work provides a facile and effective strategy to largely improve the performance of Cu2Se-based thermoelectric materials, which could be further adopted in other thermoelectric systems. Here, the authors devise a synthesis strategy to optimize the stability and thermoelectric performance of Cu2Se-based materials. They obtain a maximum ZT value of ~2.82 at 1000 K on Cu2Se-BiCuSeO-graphene composites.
- Subjects
THERMOELECTRIC effects; SELF-propagating high-temperature synthesis; HEAT recovery; THERMOELECTRIC materials; SUPERIONIC conductors; PHONON scattering; THERMAL conductivity
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-38054-y