Superhydrophobic, Multifunctional, and Mechanically Durable Carbon Aerogel Composites for High-Performance Underwater Piezoresistive Sensing

材料科学 气凝胶 压阻效应 复合材料 水下 碳纤维 纳米技术 复合数 海洋学 地质学
作者
Mingzhou Yang,Jing Wen,Jiang Han,Tingting Zheng,Xinxin Li,Yuntao Liu,Jun Yan,Haidi Wu,Xuewu Huang,Huaiguo Xue,Yongqian Shi,Long‐Cheng Tang,Pingan Song,Jiefeng Gao
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:16 (46): 64101-64112 被引量:1
标识
DOI:10.1021/acsami.4c16924
摘要

Carbon aerogel piezoresistive sensors (CAPSs), owing to their good thermal stability, self-constructed conductive network, and fast response to pressure, have attracted extensive attention in the field of flexible and wearable electronics in recent years. However, it is still a great challenge for CAPSs to monitor subtle deformations and achieve high-performance underwater piezoresistive sensing. Herein, a superhydrophobic and electrically conductive carbon aerogel composite (CAC) was fabricated by the combination of fluorination of carbon aerogels and decoration of fluorinated halloysite nanotubes (HNTs). Due to the exceptional light absorption and excellent photothermal conversion performance, CAC has a fast and accurate response to temperature with a high-temperature coefficient of resistance (TCR) of −1.06%/°C. The resistance of CAC exhibits a linear response toward compressive strain up to 80% with a high gauge factor of −1.24. Significantly, the CAC sensor can effectively detect tiny deformations, thanks to its excellent waterproof performance, and it enables stable output of sensing signals in an underwater environment. This work provides new insights into the development of superhydrophobic, multifunctional, and mechanically durable piezoresistive sensors with potential applications in underwater flexible electronics.
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