Graphene-Coated PVDF/PAni Fiber Mats and Their Applications in Sensing and Nanogeneration
Graphene-Coated PVDF/PAni Fiber Mats and Their Applications in Sensing and Nanogeneration
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DOI：
10.1021/acsami.2c09045
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发表时间：
2022-08-12
影响因子：
9.5
通讯作者：
Ashraf, Ali
中科院分区：
文献类型：
--
作者：
Rahman, Md Ashiqur;Rubaiya, Fariha;Ashraf, Ali
强制纺丝是一种强大的技术，可以生产具有广泛应用的合适性能的纤维系统。本研究考察了采用强制旋切法制备的PVDF/PAni纤维毡系统在涂覆和不涂覆石墨烯时的传感和发电性能。采用滴铸法制备了石墨烯纳米薄片。石墨烯涂层纳米复合材料的平均输出电压为75 mV（峰对峰），比裸纤维垫高300%，通过手指轻轻按压，输出电流为24 mA（峰对峰）。此外，石墨烯涂层的PVDF/PAni的体积电导率为1.2 ？10 ? ?7 S/cm，作为一种有前景的系统，被研究用于温度（灵敏度比普通纤维垫高5倍）、振动（电压产生比普通纤维垫高2倍）和气流传感。进一步研究了石墨烯包覆复合材料作为水潮能量收集压电纳米发电机，该系统产生？？40 mV的合成海浪流速为30毫升/分钟。在未来，石墨烯涂层的纳米纤维垫可以作为低功率传感器的解决方案，并收集蓝色能量和振动能量。上标或下标可用
Forcespinning is a powerful technique to produce fiber systems with suitable properties for a vast array of applications. This study investigates the sensing and energy generation performance of PVDF/PAni fiber mat systems made by the forcespinning method with and without graphene coating. The developed fiber mats were coated with graphene nanoflakes by drop-casting. The graphene-coated nanocomposites show an average output voltage of 75 mV (peak-to-peak), which is 300% higher compared to bare fiber mats, and an output current of 24 mA (peak-to-peak) by gentle finger pressing. Moreover, graphene-coated PVDF/PAni showed a volume conductivity of 1.2 ?? 10???7 S/cm and was investigated as a promising system for temperature (5 times better sensitivity than normal fiber mat), vibration (2 times better voltage generation), and airflow sensing. The graphene-coated composite has been further investigated as a water tide energy harvesting piezoelectric nanogenerator, with the system generating ???40 mV for a synthetic ocean wave with a flow rate of 30 mL/min. In the future, graphene-coated nanofiber mats can be a solution for low-powered sensors and to harvest blue energy and vibration energy.Superscript/Subscript Available