State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
Adv Mater. 2023 Jan;35(1):e2110236. doi: 10.1002/adma.202110236. Epub 2022 Dec 1.
Thermoelectric technology provides a promising solution to sustainable energy utilization and scalable power supply. Recently, Ag Q-based (Q = S, Se, Te) silver chalcogenides have come forth as potential thermoelectric materials that are endowed with complex crystal structures, high carrier mobility coupled with low lattice thermal conductivity, and even exceptional plasticity. This review presents the latest advances in this material family, from binary compounds to ternary and quaternary alloys, covering the understanding of multi-scale structures and peculiar properties, the optimization of thermoelectric performance, and the rational design of new materials. The "composition-phase structure-thermoelectric/mechanical properties" correlation is emphasized. Flexible and hetero-shaped thermoelectric prototypes based on Ag Q materials are also demonstrated. Several key problems and challenges are put forward concerning further understanding and optimization of Ag Q-based thermoelectric chalcogenides.
热电技术为可持续能源利用和可扩展的电力供应提供了一个有前途的解决方案。最近，基于 Ag Q 的（Q=S、Se、Te）银硫属化物作为潜在的热电材料脱颖而出，它们具有复杂的晶体结构、高载流子迁移率与低晶格热导率，甚至具有出色的塑性。本综述介绍了该材料家族的最新进展，从二元化合物到三元和四元合金，涵盖了对多尺度结构和特殊性质的理解、热电性能的优化以及新材料的合理设计。强调了“组成-相结构-热电/力学性能”的相关性。还展示了基于 Ag Q 材料的柔性和异型热电原型。针对进一步理解和优化基于 Ag Q 的热电硫属化物，提出了几个关键问题和挑战。
