A self-powered wearable piezoelectric nanogenerator for physiological monitoring based on lead zirconate titanate/microfibrillated cellulose@polyvinyl alcohol (PZT/MFC@PVA) composition

[Display omitted] •The matrix material based on MFC@PVA for PENG was proposed firstly.•MFC and PVA formed hydrogen bond to improve mechanical property.•The interdigital electrodes were prepared in order to improve the accuracy.•The minimum detection accuracy of was improved to 0.23 kPa. High flexibi...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2023-03, Vol.460, p.141598, Article 141598
Main Authors: Guan, Yanfang, Bai, Mingyang, Wang, Qilong, Liu, Lei, Yu, Shaobo, Kong, Bingru, Lv, Feng, Guo, Mingshuo, Liu, Guangyu, Li, Lingfeng, Zhang, Lin, Lin, Yang, Li, Wujie
Format: Article
Language:English
Subjects:
MFC@PVA
PENG
PZT
Wearable devices
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Summary:[Display omitted] •The matrix material based on MFC@PVA for PENG was proposed firstly.•MFC and PVA formed hydrogen bond to improve mechanical property.•The interdigital electrodes were prepared in order to improve the accuracy.•The minimum detection accuracy of was improved to 0.23 kPa. High flexibility, good mechanical strength, and high sensitivity are the most important factors in developing wearable devices for real-time physiological monitoring. Here, a self-powered piezoelectric nanogenerators (PENG) based on the composite films made from lead zirconate titanate, microfibrillated cellulose and polyvinyl alcohol (PZT/MFC@PVA) via melt copolymerization method was proposed. Specifically, MFC promoted PVA crystallization when the defects and cracks inside the MFC were filled by PVA, by which the output performance of the proposed PENG was improved. The results showed that a maximum output open-voltage (VOC) of 16.5 V and a maximum output short-current (ISC) of 0.86 μA were obtained, the sensitivity of PENG was 0.3168 V·kPa−1. Based on the PENG's, sensitivity and excellent mechanical properties, it could detect facial activity and chest respiratory in real time, and continuously output pressure waveform. Weak physiological signal below 0.5 kPa could be detected, and the response time was 54 ms, this showed that it had broad application prospects in medical detection and clinical diagnosis.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2023.141598