High-entropy-stabilized chalcogenides with high thermoelectric performance

作者：Binbin Jiang, Yong Yu, Juan Cui, Xixi Liu, Lin Xie, Jincheng Liao, Qihao Zhang, Yi Huang, Shoucong Ning, Baohai Jia, Bin Zhu, Shengqiang Bai, Lidong Chen, Stephen J. Pennycook, Jiaqing He · 发表于：Science · 年份：2021 · DOI：10.1126/science.abe1292 · 被引用次数：1158 · 研究领域：Advanced Thermoelectric Materials and Devices、Chalcogenide Semiconductor Thin Films、Phase-change materials and chalcogenides

Distorted thermal properties Thermoelectric devices can convert waste heat into electricity, providing one path for improving energy efficiency. Jiang et al. leveraged entropy engineering to synthesize a single-phase high-entropy alloy with attractive thermoelectric properties. By increasing the number of elements in the alloy, the resulting disorder helps to stabilize against breakdown into multiple phases. The disordered and distorted crystal lattice suppresses thermal transport while maintaining the electrical properties, which boosts the heat-conversion efficiency of the material. Science , this issue p. 830