Zhang Weiyi, Liu Qiang, Chao Shengyu, Liu Ruping, Cui Xi, Sun Yu, Ouyang Han, Li Zhou
School of Microelectronics, Tianjin University, No. 92 Weijin Road, Tianjin 300072, People's Republic of China.
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, No. 8 Yangyandongyi Road, Beijing 101400, People's Republic of China.
ACS Appl Mater Interfaces. 2021 Sep 15;13(36):42966-42976. doi: 10.1021/acsami.1c13840. Epub 2021 Sep 2.
Sustainable ultrathin stretchable power sources have emerged with the development of wearable electronics. They obtain energy from living organisms and the environment to drive these wearable electronics. Here, an ultrathin stretchable and triboelectric nanogenerator (TENG) improved by chargeable carbon black (CB)/thermoplastic polyurethane (TPU) composite material (CT-TENG) is proposed for mechanical energy harvesting and physiological signal sensing. The CB/TPU composite can act as both a stretchable electrode and a triboelectric layer due to the coexistence of conductive CB and dielectric TPU. The CT-TENG demonstrates good stretchability (≈646%), ultrathin thickness (≈50 μm), and a lightweight (≈62 mg). The triboelectric electrode material can be improved by postcharging treatment. With the corona charging process, the output performance of the CT-TENG was improved eightfold and reached 41 V. Moreover, the CT-TENG with a self-powered sensing capability can inspect the amplitude and frequency of different physiological movements. Consequently, the CT-TENG is promising in promoting the development of electronic skins, wearable systems of self-powered sensors, human-machine interactions, soft robotics, and artificial intelligence applications.
随着可穿戴电子设备的发展，可持续的超薄可拉伸电源应运而生。它们从生物体和环境中获取能量，以驱动这些可穿戴电子设备。在此，提出了一种通过可充电炭黑（CB）/热塑性聚氨酯（TPU）复合材料（CT-TENG）改进的超薄可拉伸摩擦纳米发电机，用于机械能收集和生理信号传感。由于导电CB和介电TPU的共存，CB/TPU复合材料既可以作为可拉伸电极，也可以作为摩擦电层。CT-TENG具有良好的拉伸性（约646%）、超薄厚度（约50μm）和轻重量（约62mg）。摩擦电电极材料可以通过后充电处理得到改进。通过电晕充电过程，CT-TENG的输出性能提高了八倍，达到41V。此外，具有自供电传感能力的CT-TENG可以检测不同生理运动的幅度和频率。因此，CT-TENG在促进电子皮肤、自供电传感器的可穿戴系统、人机交互、软机器人和人工智能应用的发展方面具有广阔前景。
