Liu Jin-Zhuo, Jiang Wangkai, Zhuo Sheng, Rong Yun, Li Yuan-Yuan, Lu Hang, Hu Jianchen, Wang Xiao-Qiao, Chen Weifan, Liao Liang-Sheng, Zhuo Ming-Peng, Zhang Ke-Qin
National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215123, China.
Jiangsu Provincial International Cooperation Joint Laboratory for Sustainable Textile Materials and Engineering in Universities, Suzhou 215021, China.
Sci Adv. 2025 Jan 3;11(1):eadr2158. doi: 10.1126/sciadv.adr2158.
Flexible thermoelectric systems capable of converting human body heat or solar heat into sustainable electricity are crucial for the development of self-powered wearable electronics. However, challenges persist in maintaining a stable temperature gradient and enabling scalable fabrication for their commercialization. Herein, we present a facile approach involving the screen printing of large-scale carbon nanotube (CNT)-based thermoelectric arrays on conventional textile. These arrays were integrated with the radiation-modulated thermoelectric fabrics of electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) membranes for the low-cost and high-performance wearable self-power application. Combined with the excellent photothermal properties of CNTs, the resulting thermoelectric fabric (0.2 square meters) achieves a substantial Δ of 37 kelvin under a solar intensity of ~800 watt per square meter, yielding a peak power density of 0.20 milliwatt per square meter. This study offers a pragmatic pathway to simultaneously address thermal management and electricity generation in self-powered wearable applications by efficiently harvesting solar energy.
能够将人体热量或太阳能转化为可持续电力的柔性热电系统对于自供电可穿戴电子产品的发展至关重要。然而，在维持稳定的温度梯度以及实现可扩展制造以实现商业化方面，挑战依然存在。在此，我们提出了一种简便的方法，即在传统纺织品上丝网印刷大规模碳纳米管（CNT）基热电阵列。这些阵列与静电纺聚（偏二氟乙烯 - 共 - 六氟丙烯）（PVDF - HFP）膜的辐射调制热电织物集成在一起，用于低成本、高性能的可穿戴自供电应用。结合碳纳米管优异的光热性能，所得的热电织物（0.2平方米）在约800瓦每平方米的太阳强度下实现了37开尔文的显著温差，产生了0.20毫瓦每平方米的峰值功率密度。这项研究通过高效收集太阳能，为在自供电可穿戴应用中同时解决热管理和发电问题提供了一条实用途径。
