Chen Cheng, Xu Feng-Qi, Wu Yabei, Li Xin-Lin, Xu Jie-Long, Zhao Bin, He Zhen, Yang Jiong, Zhang Wenqing, Liu Jian-Wei
Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China.
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Adv Mater. 2024 Jun;36(25):e2400020. doi: 10.1002/adma.202400020. Epub 2024 Mar 19.
Flexible thermoelectric devices hold significant promise in wearable electronics owing to their capacity for green energy generation, temperature sensing, and comfortable wear. However, the simultaneous achievement of excellent multifunctional sensing and power generation poses a challenge in these devices. Here, ordered tellurium-based hetero-nanowire films are designed for flexible and multifunctional thermoelectric devices by optimizing the Seebeck coefficient and power factor. The obtained devices can efficiently detect both object and environment temperature, thermal conductivity, heat proximity, and airflow. In addition, combining the thermoelectric units with radiative cooling materials exhibits remarkable thermal management capabilities, preventing device overheating and avoiding degradation in power generation. Impressively, this multifunctional electronics exhibits excellent resistance in extreme low earth orbit environments. The fabrication of such thermoelectric devices provides innovative insights into multimodal sensing and energy harvesting.
柔性热电设备因其具备绿色能源生成、温度传感及舒适穿戴的能力，在可穿戴电子领域有着巨大的前景。然而，在这些设备中同时实现优异的多功能传感和发电是一项挑战。在此，通过优化塞贝克系数和功率因数，设计出用于柔性多功能热电设备的有序碲基异质纳米线薄膜。所制备的设备能够高效检测物体和环境温度、热导率、热接近度及气流。此外，将热电单元与辐射冷却材料相结合展现出卓越的热管理能力，可防止设备过热并避免发电性能下降。令人印象深刻的是，这种多功能电子产品在极低地球轨道环境中表现出优异的耐受性。此类热电设备的制造为多模态传感和能量收集提供了创新性见解。
