Performance-enhanced and cost-effective triboelectric nanogenerator based on stretchable electrode for wearable SpO2 monitoring
Author(s): Chen, HM (Chen, Huamin); Yang, W (Yang, Wei); Zhang, C (Zhang, Cheng); Wu, MQ (Wu, Mingqiang); Li, WJ (Li, Wenjie); Zou, YX (Zou, Yuxiao); Lv, LF (Lv, Longfeng); Yu, HL (Yu, Hualiang); Ke, HZ (Ke, Huizhen); Liu, RP (Liu, Ruping); Xu, Y (Xu, Yun); Wang, J (Wang, Jun); Li, Z (Li, Zhou)
Source: NANO RESEARCH DOI: 10.1007/s12274-021-3724-1 Early Access Date: AUG 2021
Abstract: Recently, stretchable and wearable health monitoring equipment has greatly improved human's daily life, which sets higher demands for portable power source in stretchability, sustainability, and biocompatibility. In this work, we proposed a stretchable triboelectric nanogenerator (TENG) based on stretchable poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/porous carbon hybrid for oxyhemoglobin saturation (SpO2) monitoring. To combine advantages of carbon material for its high conductivity and organic electrode for its high stretchability, we spin-coated a solution of PEDOT:PSS/porous carbon onto a plasma-treated pre-stretched Ecoflex film to fabricate a stretchable electrode with rough surface. Due to its roughness and high potential difference with the dielectric material, the stretchable-electrode-based TENG exhibited better performance compared to the pristine TENG based on carbon or PEDOT:PSS material. The output voltage and current reached up to 51.5 V and 13.2 mu A as the carbon concentration increased. More importantly, the performance further increased under large strain (100%) which is suitable for wearable systems. Finally, the device demonstrated its application potential for powering a flexible blood oxygen monitor. This simple and cost-effective method can enhance the stretchability and stability of organic/inorganic electrode-based TENG, which paves the development of high-performance stretchable TENG.
Accession Number: WOS:000684526800005