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Bath Electrospinning of Continuous and Scalable Multifunctional MXene‐Infiltrated Nanoyarns
Journal article   Peer reviewed

Bath Electrospinning of Continuous and Scalable Multifunctional MXene‐Infiltrated Nanoyarns

Ariana Levitt, Shayan Seyedin, Jizhen Zhang, Xuehang Wang, Joselito M. Razal, Genevieve Dion and Yury Gogotsi
Small (Weinheim an der Bergstrasse, Germany), v 16(26), p11
02 Jul 2020
PMID: 32500606

Abstract

MXenes nanofibers nylon polyurethane strain sensors supercapacitors
Electroactive yarns that are stretchable are desired for many electronic textile applications, including energy storage, soft robotics, and sensing. However, using current methods to produce these yarns, achieving high loadings of electroactive materials and simultaneously demonstrating stretchability is a critical challenge. Here, a one‐step bath electrospinning technique is developed to effectively capture Ti3C2Tx MXene flakes throughout continuous nylon and polyurethane (PU) nanofiber yarns (nanoyarns). With up to ≈90 wt% MXene loading, the resulting MXene/nylon nanoyarns demonstrate high electrical conductivity (up to 1195 S cm−1). By varying the flake size and MXene concentration, nanoyarns achieve stretchability of up to 43% (MXene/nylon) and 263% (MXene/PU). MXene/nylon nanoyarn electrodes offer high specific capacitance in saturated LiClO4 electrolyte (440 F cm−3 at 5 mV s−1), with a wide voltage window of 1.25 V and high rate capability (72% between 5 and 500 mV s−1). As strain sensors, MXene/PU yarns demonstrate a wide sensing range (60% under cyclic stretching), high sensitivity (gauge factor of ≈17 in the range of 20–50% strain), and low drift. Utilizing the stretchability of polymer nanofibers and the electrical and electrochemical properties of MXene, MXene‐based nanoyarns demonstrate potential in a wide range of applications, including stretchable electronics and body movement monitoring. Continuous and electroactive MXene‐based nanofiber yarns (nanoyarns) are fabricated using a bath electrospinning method, which captures MXene flakes throughout the entire cross‐section of a nanoyarn, maximizing interactions between nanofibers and flakes. The high stretchability of polymeric nanofibers and the electrical and electrochemical properties of MXene offer a platform for storing energy and sensing body movements in wearable textiles.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
Physics, Applied
Physics, Condensed Matter
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