Bath Electrospinning of Continuous and Scalable Multifunctional MXene-Infiltrated Nanoyarns.

Autor: Levitt A; A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA.; Center for Functional Fabrics, Drexel University, Philadelphia, PA, 19104, USA., Seyedin S; Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK., Zhang J; Institute for Frontier Materials, Deakin University, Geelong, VIC, 3220, Australia., Wang X; A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA., Razal JM; Institute for Frontier Materials, Deakin University, Geelong, VIC, 3220, Australia., Dion G; Center for Functional Fabrics, Drexel University, Philadelphia, PA, 19104, USA., Gogotsi Y; A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2020 Jul; Vol. 16 (26), pp. e2002158. Date of Electronic Publication: 2020 Jun 05.
DOI: 10.1002/smll.202002158
Abstrakt: 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 Ti 3 C 2 T x 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 LiClO 4 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.
(© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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