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Research Article

Performance-enhanced and cost-effective triboelectric nanogenerator based on stretchable electrode for wearable SpO2 monitoring

Huamin Chen1,2, Wei Yang1, Cheng Zhang1, Mingqiang Wu1, Wenjie Li1, Yuxiao Zou3, Longfeng Lv3, Hualiang Yu1, Huizhen Ke7, Ruping Liu5, Yun Xu3,4, Jun Wang1(), Zhou Li2,6()
Fujian Key Laboratory of Functional Marine Sensing Materials, Center for Advanced Marine Materials and Smart Sensors, Minjiang University, Fuzhou 350108, 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, Beijing 100083, China
Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
Beijing Key Laboratory of Inorganic Stretchable and Flexible Information Technology, Beijing 100083, China
Beijing Institute of Graphic Communication, Beijing 102600, China
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China
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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 μA 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.

Keywords

triboelectric nanogeneratorstretchableporous carbonblood oxygenpoly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS)wearable electronic

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Nano Research
Volume 15 Issue 3,
March 2022
Pages 2465-2471
DOI: 10.1007/s12274-021-3724-1
Cite this article:
Chen H, Yang W, Zhang C, et al. Performance-enhanced and cost-effective triboelectric nanogenerator based on stretchable electrode for wearable SpO2 monitoring. Nano Research, 2022, 15(3): 2465-2471. https://doi.org/10.1007/s12274-021-3724-1
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