About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Chemical Design for Glass-Like Phonon Transport in Thermoelectric Materials |
| Author(s) |
Joshua Parker, Na Liu, Wenjie Li |
| On-Site Speaker (Planned) |
Wenjie Li |
| Abstract Scope |
Decoupling phonon and electron transport is essential for high-performance thermoelectric (zT). Achieving glass-like phonon transport within crystalline electronic networks is fundamentally a chemical endeavor. We present a chemical design map that utilizes composition, bonding, and entropy to drive lattice thermal conductivity toward amorphous limits. Specific strategies explored include host-guest chemistry, dynamic disorder via vacancy engineering, and breaking local bonding homogeneity. However, critical challenges remain, notably the selectivity problems, such as scattering phonons without disrupting electronic bands and the long-term reliability of superionic systems. We conclude with an outlook on interfacial engineering and sustainable chemistry to replace toxic or scarce elements. Mastering these chemical design rules allows for the engineering of materials where heat is hindered like glass, while electricity flows like crystal. |