Flexible Thermoelectric Materials and Generators: Challenges and Innovations

热电材料 热电效应 材料科学 热电发电机 灵活性(工程) 工程物理 纳米技术 数码产品 热导率 机械工程 工艺工程 电气工程 工程类 复合材料 物理 统计 热力学 数学
作者
Yuan Wang,Lei Yang,Xiao‐Lei Shi,Xun Shi,Lidong Chen,Matthew S. Dargusch,Jin Zou,Zhi‐Gang Chen
出处
期刊:Advanced Materials [Wiley]
卷期号:31 (29) 被引量:588
标识
DOI:10.1002/adma.201807916
摘要

Abstract The urgent need for ecofriendly, stable, long‐lifetime power sources is driving the booming market for miniaturized and integrated electronics, including wearable and medical implantable devices. Flexible thermoelectric materials and devices are receiving increasing attention, due to their capability to convert heat into electricity directly by conformably attaching them onto heat sources. Polymer‐based flexible thermoelectric materials are particularly fascinating because of their intrinsic flexibility, affordability, and low toxicity. There are other promising alternatives including inorganic‐based flexible thermoelectrics that have high energy‐conversion efficiency, large power output, and stability at relatively high temperature. Herein, the state‐of‐the‐art in the development of flexible thermoelectric materials and devices is summarized, including exploring the fundamentals behind the performance of flexible thermoelectric materials and devices by relating materials chemistry and physics to properties. By taking insights from carrier and phonon transport, the limitations of high‐performance flexible thermoelectric materials and the underlying mechanisms associated with each optimization strategy are highlighted. Finally, the remaining challenges in flexible thermoelectric materials are discussed in conclusion, and suggestions and a framework to guide future development are provided, which may pave the way for a bright future for flexible thermoelectric devices in the energy market.
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