Constructing a continuous reduced graphene oxide network in porous plant fiber sponge for highly compressible and sensitive piezoresistive sensors

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2023-10-13 DOI:10.1007/s42114-023-00754-w

Gang Zhao, Feng Qian, Xinyi Li, Yuhan Tang, Ye Sheng, Handong Li, Jiuping Rao, Man Vir Singh, Hassan Algadi, Min Niu, Weijie Zhang, Zhanhu Guo, Xiangfang Peng, Tingjie Chen

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Abstract

Flexible pressure sensors as wearable electronic devices to monitor human health have attracted significant attention. Herein, a simple and effective carbonization-free method is proposed to prepare a compressible and conductive reduced graphene oxide (rGO)–modified plant fiber sponge (defined as rGO-PFS). The introduced GO can not only coat on the surface of plant fibers, but also form a large amount of aerogel with microcellular structure in the macroporous PFS. After reduction treatment, the rGO-PFS can form a double-continuous conductive network of rGO aerogel. With the improvement of polydimethylsiloxane (PDMS), the rGO-PFS@PDMS composite exhibits outstanding compressibility (up to 60% compression strain), excellent durability (10,000 stable compression cycles at 50% strain), high sensitivity (234.07 kPa⁻¹ in a pressure range of 20 ~ 387.2 Pa), low detection limit (20 Pa), and rapid response time (28 ms) for practical wearable applications.

Graphical Abstract

A compressible and conductive reduced graphene oxide–modified plant fiber sponge is prepared by a simple and effective carbonization-free method. With the improvement of polydimethylsiloxane, the sponge exhibits outstanding compressibility, durability, high sensitivity, low detection limit, and rapid response time for practical wearable applications.

Abstract Image

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在多孔植物纤维海绵中构建连续还原氧化石墨烯网络，用于高可压缩和敏感的压阻传感器

柔性压力传感器作为监测人体健康的可穿戴电子设备引起了人们的广泛关注。本文提出了一种简单有效的无碳化制备可压缩导电的还原氧化石墨烯(rGO)改性植物纤维海绵(定义为rGO- pfs)的方法。引入的氧化石墨烯不仅可以包覆在植物纤维表面，还可以在大孔PFS中形成大量具有微孔结构的气凝胶。还原处理后的rGO- pfs可以形成双连续的rGO气凝胶导电网络。随着聚二甲基硅氧烷(PDMS)的改进，rGO-PFS@PDMS复合材料具有出色的可压缩性(高达60%的压缩应变)，优异的耐用性(在50%应变下稳定压缩循环10,000次)，高灵敏度(在20 ~ 387.2 Pa的压力范围内234.07 kPa−1)，低检测限(20 Pa)和快速响应时间(28 ms)，适用于实际可穿戴应用。采用简单有效的无碳化方法制备了可压缩导电的还原性氧化石墨烯改性植物纤维海绵。通过对聚二甲基硅氧烷的改进，该海绵具有出色的可压缩性、耐用性、高灵敏度、低检出限和快速响应时间，可用于实际可穿戴应用。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.