纳米纤维
材料科学
静电纺丝
压电
傅里叶变换红外光谱
聚丙烯腈
扫描电子显微镜
复合材料
纳米发生器
极化
纳米技术
化学工程
光电子学
聚合物
铁电性
电介质
工程类
作者
Yan Huang,Rui Xue,L. An,Qisong Shi,Wenjuan Zhang,Yibo Wu,Ruofan Liu
标识
DOI:10.1088/1361-665x/aceb43
摘要
Abstract Electrospun nanofibers are widely used in flexible piezoelectric sensors. However, producing multifunctional sensors with comprehensive coverage and high sensitivity remains challenging. In this work, we designed a multifunctional and flexible piezoelectric sensor. We obtained polyacrylonitrile (PAN)/MXene/ZnS:Cu nanofibers by electrospinning, while the diameter of the nanofibers was characterized by using scanning electron microscopy, x-ray diffraction spectroscopy, and Fourier transform infrared (FTIR) spectroscopy. X-ray diffraction and FTIR spectroscopy showed that the synergistic effect of MXene and ZnS:Cu promotes the content of planar zigzag conformation of PAN (94.16%). The ferroelectric and mechanical properties of the nanofibers were characterized by ferrometry and stretching, and their energy storage efficiency reached 94.05%, and the elongation at break increased to 97.5%. The piezoelectric sensor was fabricated with PAN/MXene/ZnS:Cu nanofibers. Under less pressure (0.098–1.96 N), it had a sensitivity of 2.46 V N −1 , and at a frequency of 3 Hz, using a slight force percussion, its output voltage reached 10 V, which was twice that of pure PAN nanofibers. The output current was 50 μ A. Its good sensitivity could be used to detect small body movement signals. Our results showed that PAN/MXene/ZnS:Cu nanofibers can fabricate multifunctional sensors, and the excellent performance of the piezoelectric sensor makes it have great application potential in the next generation of wearable electronic products.
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