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Journal article
Intercalation‐Induced Reversible Electrochromic Behavior of Two‐Dimensional Ti3C2Tx MXene in Organic Electrolytes
ChemElectroChem, v 8(1), pp 151-156
04 Jan 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes, a large family of two‐dimensional materials, have attracted tremendous attention due to their unique physical and chemical properties. Reversible ion intercalation between MXene layers allows modification of the optical, thermal, magnetic, and chemical properties. The electrochemical charge/discharge of MXenes in aqueous electrolytes was reported to lead to reversible electrochromic behavior. In this work, the electrochromic effect of semitransparent Ti3C2Tx MXene film was probed by electrochemical intercalation of Li ions. Correspondingly, a peak shift of 100 nm was observed in the UV‐vis spectrum. By combining in‐situ Raman spectroscopy, in‐situ X‐ray diffraction, and density functional theory calculations, we show that the electrochromic shift is primarily due to the formation of robust O−Li bonds and the emerging bands induced changes of inter‐band excitations. Understanding the mechanism of electrochromic behavior in Ti3C2Tx lays the foundations of designating 2D materials with durable, controllable, and efficient intercalation‐induced electrochromic behaviors.
MXenes turn blue! Highly reversible electrochromic performance of semitransparent Ti3C2Tx MXene film was realized in organic electrolyte, whose mechanism was revealed by conducting in‐situ Raman spectroscopy and density functional theory calculation. The interactions between O‐termination and the increasing number of Li ions lead to charge transfer and directly alter the optical excitations, resulting in the color change from dark green to blue.
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Details
- Title
- Intercalation‐Induced Reversible Electrochromic Behavior of Two‐Dimensional Ti3C2Tx MXene in Organic Electrolytes
- Creators
- Jianmin Li - Donghua UniversityXuehang Wang - Drexel UniversityWeiwei Sun - Southeast UniversityKathleen Maleski - Drexel UniversityChristopher E Shuck - Drexel UniversityKe Li - Drexel UniversityPatrick Urbankowski - Drexel UniversityKanit Hantanasirisakul - Drexel UniversityXiaofeng Wang - Drexel UniversityPaul Kent - Oak Ridge National LaboratoryHongzhi Wang - Donghua UniversityYury Gogotsi - Drexel University
- Publication Details
- ChemElectroChem, v 8(1), pp 151-156
- Publisher
- Wiley
- Number of pages
- 6
- Grant note
- Fluid Interface Reactions, Structures, and Transport (FIRST) Center Energy Frontier Research Center National Natural Science Foundation of China (51902052) U.S. Department of Energy Office (DE-AC02-05CH11231) Army Research Office (W911NF-18-2-0026) National Energy Research Scientific Computing Center US Department of Energy Office of Basic Energy Sciences Surface Science Initiative Program (PE 0601102 A) Office of Science
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000594837500001
- Scopus ID
- 2-s2.0-85096959567
- Other Identifier
- 991014969858004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry