Printed graphene electrodes for textile-embedded triboelectric nanogenerators for biomechanical sensing
Printed graphene electrodes for textile-embedded triboelectric nanogenerators for biomechanical sensing
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DOI：
10.1016/j.nanoen.2023.108688
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发表时间：
2023-07
期刊：
影响因子：
17.6
通讯作者：
I. Domingos;Z. Saâdi;Kavya Sreeja Sadanandan;Henrique A. Pocinho;D. Caetano;A. Neves;M. Craciun;Helena Alves
中科院分区：
文献类型：
--
作者：
I. Domingos;Z. Saâdi;Kavya Sreeja Sadanandan;Henrique A. Pocinho;D. Caetano;A. Neves;M. Craciun;Helena Alves
纺织摩擦电纳米发电机（TENG）正在成为可穿戴自供电传感技术的一个有前途的解决方案。然而，在使用纺织品兼容技术的同时，在适形设备中实现具有优异输出性能的纺织品TENG仍然是一个挑战。在这项工作中，一个高效的灵活的摩擦电纺织品是通过使用印刷的石墨烯电极与聚二甲基硅氧烷（PDMS）和纺织品本身作为摩擦电对。为了实现这一点，采用具有聚氨酯粘合剂的织物平面化技术，沿着三种不同的沉积方法：石墨烯液滴膜（GDF）、石墨烯浸没膜（GIF）和石墨烯喷涂膜（GSF）。其结果是一种柔性纺织电极，在所有三种印刷技术中均超过了非平面化器件，性能提高了4倍，功率密度为3.08 µW/cm²。此外，通过使用四个每个尺寸为3 × 3 cm²的并联器件来增加TENG接触面积，功率输出达到了60 µW的有效功率。柔性TENG在强变形下具有稳定的输出性能，其对运动的敏感性被探索作为可穿戴传感器来监测生物力学运动。这项工作提供了一种通用的方法，用于仅使用工业兼容的印刷纺织工艺来构建柔性摩擦电纺织面料，为自供电可穿戴传感技术与纺织品的无缝集成铺平了道路。
Textile triboelectric nano-generators (TENGs) are emerging as a promising solution for wearable self-powered sensing technology. However, achieving textile TENGs with excellent output performance in conformable devices, while using textile compatible techniques, is still a challenge. In this work, a highly efficient flexible triboelectric textile is developed by using printed graphene electrodes with polydimethylsiloxane (PDMS) and the textile itself as the triboelectric pair. To achieve this, a textile planarization technique with a polyurethane adhesive was employed, along with three different deposition methods: graphene droplet films (GDF), graphene immersion films (GIF), and graphene spray films (GSF). The result was a flexible textile electrode that surpassed non-planarized devices in all three printing techniques, with a 4-fold improvement and a power density of 3.08 µW/cm². Moreover, by increasing the TENG contact area through the use of four parallel devices measuring 3 × 3 cm² each, the power output reached an effective power of 60 µW. The flexible TENG presents a stable output performance under strong deformation and its sensitivity to movement was explored as wearable sensor to monitor biomechanical movements. This work provides a versatile method for constructing flexible triboelectric textile fabrics using only industrial compatible printing textile processes, paving the way to the seamless integration of self-powered wearable sensing technology into textiles.