Ce-Wen Nan

Sep 2, 2024 | nature.com | Yunpeng Zheng |Qinghua Zhang |Zhifang Zhou |YuJun Zhang |Changpeng Lin |Weigang Ma | +7 more

AbstractThermoelectrics converting heat and electricity directly attract broad attentions. To enhance the thermoelectric figure of merit, zT, one of the key points is to decouple the carrier-phonon transport. Here, we propose an entropy engineering strategy to realize the carrier-phonon decoupling in the typical SrTiO3-based perovskite thermoelectrics. By high-entropy design, the lattice thermal conductivity could be reduced nearly to the amorphous limit, 1.25 W m−1 K−1.

Feb 6, 2024 | pubs.acs.org | Bingbing Yang |Yunpeng Zheng |Zhifang Zhou |Ce-Wen Nan

Feb 6, 2024 | dx.doi.org | Bingbing Yang |Yunpeng Zheng |Zhifang Zhou |Ce-Wen Nan

Sep 1, 2023 | nature.com | Bin Wei |Ce-Wen Nan

AbstractPolyhedral distortion, associated closely with the atomic arrangement and interatomic interactions, drives many unique behaviors in solids, such as phase transition and negative thermal expansion. In thermoelectric heteroanionic oxides, the anionic polyhedra are widely present, but their effect on thermal transport is rarely investigated.

Jul 10, 2023 | nature.com | Bingbing Yang |Houbing Huang |Hao Pan |Wenxuan Zhu |Bin Wei |Yiqun Liu | +3 more

AbstractRelaxor ferroelectrics are the primary candidates for high-performance energy storage dielectric capacitors. A common approach to tuning the relaxor properties is to regulate the local compositional inhomogeneity, but there is a lack of a quantitative evaluation way for compositional fluctuation in relaxors. Here we propose configurational entropy as an index for the quantitative evaluation of local compositional inhomogeneity.