Ren Xiaohu, Xiang Xinyu, Yin Hongfeng, Tang Yun, Yuan Hudie
Functional Materials Laboratory, College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, People's Republic of China.
Nanotechnology. 2021 May 14;32(31). doi: 10.1088/1361-6528/abfcfe.
Despite rapid developments, multifunctional wearable electronics are still not significant in practical applications as compared to portable and stretchable power devices. In this paper, we present the flexible and easy large-scale production of single-electrode mode triboelectric nanogenerator (TENG) and supercapacitor yarn-based self-charging power fabric, for simultaneously converting and storing biomechanical energy. Fabricated using traditional knitting technologies, the self-charging power fabric can adapt to complex mechanical deformations owing to its high flexibility and stretchability. Additionally, the output characteristics of the TENG fabric were systematically investigated with the purpose of energy generation. The TENG fabric can generate a maximum peak power density of ∼90 mW·musing nylon as the contact material, with an operating frequency of 4 Hz. The as-prepared yarn-based supercapacitor exhibited high capacitance, good cycling stability, and flexibility, making it an appropriate wearable energy-storage device. Moreover, the proposed design uses energy harvested from biomechanical motions to sustainably power portable electronic devices. The results of this study indicate that the proposed design is a promising sustainable power source for wearable electronic devices.
尽管取得了快速发展，但与便携式和可拉伸电源设备相比，多功能可穿戴电子产品在实际应用中仍不显著。在本文中，我们展示了单电极模式摩擦纳米发电机（TENG）和基于超级电容器纱线的自充电功率织物的灵活且易于大规模生产，用于同时转换和存储生物机械能。采用传统针织技术制造的自充电功率织物，由于其高柔韧性和拉伸性，能够适应复杂的机械变形。此外，为了实现能量产生，系统地研究了TENG织物的输出特性。以尼龙作为接触材料时，TENG织物可产生高达约90 mW·m的最大峰值功率密度，工作频率为4 Hz。所制备的基于纱线的超级电容器表现出高电容、良好的循环稳定性和柔韧性，使其成为一种合适的可穿戴储能设备。此外，所提出的设计利用从生物机械运动中收集的能量为便携式电子设备持续供电。这项研究的结果表明，所提出的设计是一种有前景的可穿戴电子设备可持续电源。
