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Journal article
Titanium Carbide MXene Shows an Electrochemical Anomaly in Water-in-Salt Electrolytes
ACS nano, v 15(9), pp 15274-15284
28 Sep 2021
PMID: 34415730
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Identifying and understanding charge storage mechanisms is important for advancing energy storage. Well-separated peaks in cyclic voltammograms (CVs) are considered key indicators of diffusion-controlled electrochemical processes with distinct Faradaic charge transfer. Herein, we report on an electrochemical system with separated CV peaks, accompanied by surface-controlled partial charge transfer, in 2D Ti3C2Tx MXene in waterin-salt electrolytes. The process involves the insertion/ desertion of desolvation-free cations, leading to an abrupt change of the interlayer spacing between MXene sheets. This unusual behavior increases charge storage at positive potentials, thereby increasing the amount of energy stored. This also demonstrates opportunities for the development of highrate aqueous energy storage devices and electrochemical actuators using safe and inexpensive aqueous electrolytes.
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Details
- Title
- Titanium Carbide MXene Shows an Electrochemical Anomaly in Water-in-Salt Electrolytes
- Creators
- Xuehang Wang - Drexel UniversityTyler S. Mathis - Drexel UniversityYangyunli Sun - University of California, RiversideWan-Yu Tsai - Oak Ridge National LaboratoryNetanel Shpigel - Bar-Ilan UniversityHui Shao - Université Toulouse III - Paul SabatierDanzhen Zhang - Drexel UniversityKanit Hantanasirisakul - Drexel UniversityFyodor Malchik - Bar-Ilan UniversityNina Balke - Oak Ridge National LaboratoryDe-en Jiang - University of California, RiversidePatrice Simon - Université Toulouse III - Paul SabatierYury Gogotsi - Drexel University, Materials Science and Engineering
- Publication Details
- ACS nano, v 15(9), pp 15274-15284
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 11
- Grant note
- Center for Nanophase Materials Sciences (CNMS) in Oak Ridge National Laboratory Fluid Interface Reactions, Structures and Transport (FIRST) Center, an Energy Frontier Research Center - US Department of Energy, Office of Basic Energy Sciences; United States Department of Energy (DOE) DE-AC02-05CH11231 / Office of Science of the U.S. Department of Energy; United States Department of Energy (DOE) Fluid Interface Reactions, Structures and Transport (FIRST) Center, an Energy Frontier Research Center - US Department of Energy, Office of Science; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000703553600120
- Scopus ID
- 2-s2.0-85114394984
- Other Identifier
- 991019167545604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology