3D hybrid porous Mxene-sponge network and its application in piezoresistive sensor
2018; Elsevier BV; Volume: 50; Linguagem: Inglês
10.1016/j.nanoen.2018.05.020
ISSN2211-3282
AutoresYue Yang, Nishuang Liu, Weijie Liu, Mian Li, Yanan Ma, Cheng Luo, Siliang Wang, Jiangyu Rao, Xiaokang Hu, Jun Su, Zhi Zhang, Qing Huang, Yihua Gao,
Tópico(s)Gas Sensing Nanomaterials and Sensors
ResumoHigh-performance pressure sensors attract widespread attention due to the potential applications in human-machine interaction and wearable electronics. However, most of flexible pressure sensors need elaborate nanostructure design, and thus their manufacture is consuming and complicated. Therefore, a large-scale and low-cost technology is highly desirable to fabricate flexible pressure sensitive materials with high sensitivity in broad pressure range. Here, an MXene-sponge was fabricated by a simple and efficient dipping-coating process method and was applied in the piezoresistive sensor with insulating Polyvinyl Alcohol (PVA) nanowires as a spacer. The sensor based on MXene-sponge presents high sensitivity for a broad pressure range (147 kPa−1 for less than 5.37 kPa region and 442 kPa−1 for 5.37–18.56 kPa region), a low detection limit of 9 Pa, a rapid response time of 138 ms, and an excellent durability over 10,000 cycles. Human physiological signal (such as respiration, joint movement and pulses) can be real-time monitored by the MXene-sponge sensor. The potential applications of the sensor in measuring pressure distribution and human-machine interaction are also explored.
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