Journal article
Electrochromic Effect in Titanium Carbide MXene Thin Films Produced by Dip‐Coating
Advanced functional materials, v 29(17), pp 1809223-n/a
25 Apr 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes, a large family of 2D transition metal carbides and nitrides, have shown potential in energy storage and optoelectronic applications. Here, the optoelectronic and pseudocapacitive properties of titanium carbide (Ti3C2Tx) are combined to create a MXene electrochromic device, with a visible absorption peak shift from 770 to 670 nm and a 12% reversible change in transmittance with a switching rate of <1 s when cycled in an acidic electrolyte under applied potentials of less than 1 V. By probing the electrochromic effect in different electrolytes, it is shown that acidic electrolytes (H3PO4 and H2SO4) lead to larger absorption peak shifts and a higher change of transmittance than the neutral electrolyte (MgSO4) (Δλ is 100 nm vs 35 nm and ΔT770 nm is ≈12% vs ≈3%, respectively), hinting at the surface redox mechanism involved. Further investigation of the mechanism by in situ X‐ray diffraction and Raman spectroscopy reveals that the reversible shift of the absorption peak is attributed to protonation/deprotonation of oxide‐like surface functionalities. As a proof of concept, it is shown that Ti3C2Tx MXene, dip‐coated on a glass substrate, functions as both transparent conductive coating and active material in an electrochromic device, opening avenues for further research into optoelectronic and photonic applications of MXenes.
The optoelectronic and pseudocapacitive properties of titanium carbide (Ti3C2Tx) MXene are combined to create a MXene electrochromic device, exhibiting a reversible shift of the absorption peak from 770 nm (green) to 670 nm (blue). The discovery of MXenes as electrochromic materials can open a large field of different color devices depending on the composition.
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Details
- Title
- Electrochromic Effect in Titanium Carbide MXene Thin Films Produced by Dip‐Coating
- Creators
- Pol Salles - Drexel UniversityDavid Pinto - Drexel UniversityKanit Hantanasirisakul - Drexel UniversityKathleen Maleski - Drexel UniversityChristopher E Shuck - Drexel UniversityYury Gogotsi - Drexel University
- Publication Details
- Advanced functional materials, v 29(17), pp 1809223-n/a
- Publisher
- Wiley
- Number of pages
- 9
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000467160500022
- Scopus ID
- 2-s2.0-85062355849
- Other Identifier
- 991014969850704721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter