Journal article
Electrospun MXene/carbon nanofibers as supercapacitor electrodes
Journal of materials chemistry. A, Materials for energy and sustainability, v 7(1), pp 269-277
07 Jan 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Free-standing Ti3C2Tx MXene/carbon nanofiber electrodes are prepared via electrospinning Ti3C2Tx MXene flakes with polyacrylonitrile (PAN) and carbonizing the fiber networks. Using this simple fabrication method, delaminated MXene flakes are embedded within carbon nanofibers and these fiber mats are used as electrodes without binders or additives. Unlike coated electrodes, which may suffer from the active material delaminating from the substrate during folding or bending, composite electrodes are stable and durable. Previous attempts to incorporate Ti3C2Tx MXene into electrospun fibers resulted in low mass loadings, approximate to 1 wt% Ti3C2Tx MXene. In this work, MXene flakes are added into PAN solutions at a weight ratio of 2:1 (MXene:PAN) in the spinning dope, producing fiber mats with up to 35 wt% MXene. Composite electrodes have high areal capacitance, up to 205 mF cm(-2) at 50 mV s(-1), almost three times that of pure carbonized PAN nanofibers (70 mF cm(-2) at 50 mV s(-1)). Compared with electrospun nanofibers spray-coated with Ti3C2Tx, these composite fibers exhibit double the areal capacitance at 10 mV s(-1). This method can be used to produce MXene composite fibers using a variety of polymers, which have potential applications beyond energy storage, including filtration, adsorption, and electrocatalysis, where fibers with high aspect ratio, accessible surface, and porosity are desirable.
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Details
- Title
- Electrospun MXene/carbon nanofibers as supercapacitor electrodes
- Creators
- Ariana S. Levitt - Drexel UniversityMohamed Alhabeb - Drexel UniversityChristine B. Hatter - Drexel UniversityAsia Sarycheva - Drexel UniversityGenevieve Dion - Drexel UniversityYury Gogotsi - Drexel University, Materials Science and Engineering
- Publication Details
- Journal of materials chemistry. A, Materials for energy and sustainability, v 7(1), pp 269-277
- Publisher
- Royal Soc Chemistry
- Number of pages
- 9
- Grant note
- DGE-1646737 / National Science Foundation Graduate Research Fellowship; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Fashion Design; Materials Science and Engineering
- Web of Science ID
- WOS:000454251000019
- Scopus ID
- 2-s2.0-85058876248
- Other Identifier
- 991019168816404721
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Highly Cited Paper
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary