Siloxene/PVDF Composite Nanofibrous Membrane for High‐Performance Triboelectric Nanogenerator and Self‐Powered Static and Dynamic Pressure Sensing Applications. (19th March 2022)

• Record Type: Journal Article
• Authors: Bhatta, Trilochan; Sharma, Sudeep; Shrestha, Kumar; Shin, Youngdo; Seonu, Sookyeong; Lee, Sanghyun; Kim, Dongkyun; Sharifuzzaman, Md.; Rana, SM Sohel; Park, Jae Yeong
• Is Part Of: Advanced functional materials. Volume 32:Number 25(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-03-19
• Subjects: composite nanofibrous membranes -- dynamic sensing -- self‐powered pressure sensors -- static sensing -- triboelectric nanogenerators -- user authentication; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202202145
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Polymer nanofibers are widely adopted in energy harvesting and pressure sensing applications owing to the large contact area and inherent compressibility. Herein, a high‐performance triboelectric nanogenerator (TENG) based on 2D siloxene‐polyvinylidene fluoride (S‐PVDF) composite nanofibrous membrane is newly evaluated. Through proper ratio optimization and facile electrospinning, the fabricated membrane shows significant improvement in dielectric property, electronegativity, and compressibility. The TENG comprising S‐PVDF membrane and Nylon 6/6 can deliver an excellent power density of 13.25 W m −2 ( f ≈ 5 Hz) and easily operates low‐power electronics and Internet of things (IoTs). In addition, the excellent compressibility of membrane extends its applicability to self‐powered simultaneous detection of dynamic and static pressure, which is investigated by developing a hybrid pressure sensor (HPS) through effective integration of TENG and a capacitive pressure sensor. The HPS shows an excellent dynamic (12.062 V kPa −1 at (<3 kPa) and 2.58 V kPa −1 at (3–25 kPa)) and static (25.07 mV kPa −1 at (<3 kPa) and 5.96 mV kPa −1 at (3–25 kPa)) pressure sensitivities, respectively. Furthermore, a 2 × 2 HPS array tested and analyzed for multiple users using artificial intelligence significantly improves the accuracy (98%). Remarkable energy harvesting performance and greater accuracy of the HPS manifests better preferences for future self‐powered IoT and smart tactile‐based user authentication systems. Abstract : Herein, a high‐performance triboelectric nanogenerator based on siloxene‐polyvinylidene fluoride (S‐PVDF) composite nanofibrous membrane is demonstrated. Furthermore, by integrating a highly sensitive capacitive pressure sensor, a self‐powered hybrid sensor array that simultaneously measures static and dynamic pressure is presented. Excellent triboelectric performance and greater sensing accuracy highlight its usefulness in future self‐powered electronics and authentication platforms.