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High-Performance Flexible Wearable Triboelectric Nanogenerator Sensor by β-Phase Polyvinylidene Fluoride Polarization
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2024-02-13 , DOI: 10.1021/acsaelm.3c01678
Jiayi Yang 1 , Meiqi Wang 1 , Yan Meng 1 , Zihao Niu 1 , Yijun Hao 1 , Haopeng Liu 1 , Wei Su 1 , Hongke Zhang 1 , Yong Qin 2 , Chuguo Zhang 1 , Xiuhan Li 1
Affiliation  

Flexible and wearable sensors have a crucial impact on the development of intelligent information technology. However, current commercial sensors cannot meet the relevant performance requirements. Herein, based on the electrospinning process, extra polarization, and triboelectric nanogenerator technologies, we propose a high-performance flexible wearable sensor (HFWS) with a self-powered and breathable function, which is constructed by polarized polyvinylidene fluoride-barium titanate (PVDF-BTO) electrospun film and a Ni fabric electrode. After optimization of the β-phase content in PVDF by electrospinning and BTO nanoparticles, an extra high-voltage polarization operation is continually used to improve the β-phase of PVDF and further enhance the triboelectric performance. Benefiting from the excellent triboelectric performance, the HFWS exhibits several times higher signal-to-noise ratio (37.01 dB), sensitivity (2.62 ± 0.11 V/kPa), and power density (4.62 W/m2) compared to previous similar studies. In addition, for the stable molecular phase structure in PVDF-BTO film, the HFWS has various good durability and stability in machinery, washing, environment, and other aspects. Our finding has potential value in the field of wearable devices, smart healthcare, and intelligent life.

中文翻译:

β相聚偏二氟乙烯偏振高性能柔性可穿戴摩擦纳米发电机传感器

柔性可穿戴传感器对智能信息技术的发展有着至关重要的影响。然而,目前的商用传感器无法满足相关的性能要求。在此,基于静电纺丝工艺、额外极化和摩擦纳米发电机技术,我们提出了一种具有自供电和透气功能的高性能柔性可穿戴传感器(HFWS),该传感器由极化聚偏二氟乙烯钛酸钡(PVDF- BTO)电纺薄膜和镍织物电极。通过静电纺丝和BTO纳米粒子优化PVDF中的β相含量后,继续使用超高压极化操作来改善PVDF的β相并进一步增强摩擦电性能。得益于优异的摩擦电性能,HFWS的信噪比(37.01 dB)、灵敏度(2.62 ± 0.11 V/kPa)和功率密度(4.62 W/m 2)比之前的类似研究高出数倍。此外,由于PVDF-BTO薄膜中稳定的分子相结构,HFWS在机械、洗涤、环境等方面具有良好的耐久性和稳定性。我们的发现在可穿戴设备、智能医疗、智能生活领域具有潜在价值。
更新日期:2024-02-13
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