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Journal article
Electrochemical Properties of Mo4VC4Tx MXene in Aqueous Electrolytes
ACS applied materials & interfaces, v 16(29), pp 38053-38060
15 Jul 2024
Featured in Collection : Research Supported by Drexel Libraries' OA Programs
Abstract
M5C4Tx MXenes represent the most recently discovered and least studied subfamily of out-of-plane ordered double transition metal carbides with 11 atomic layers, probably the thickest of all 2D materials. Molybdenum (Mo) and vanadium (V) in Mo4VC4Tx offer multiple oxidation states, making this MXene potentially attractive for electrochemical energy storage applications. Herein, we evaluated the electrochemical properties of Mo4VC4Tx free-standing thin films in acidic, basic, and neutral aqueous electrolytes and observed the highest gravimetric capacitance of 219 F g–1 at 2 mV s–1 in a 3 M H2SO4. Further, we investigated the intercalation states of four different cations (H+, Li+, Na+, and K+) in MXenes through ab initio molecular dynamics (AIMD) simulation and used density functional theory (DFT) calculations to assess the charge storage mechanisms in different electrolytes. These studies show hydrated Li+, Na+, and K+ ions forming an electric double layer (EDL) at the MXene surface as the primary charge storage mechanism. This work shows the promise of Mo4VC4Tx MXene for energy storage in aqueous electrolytes.
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Details
- Title
- Electrochemical Properties of Mo4VC4Tx MXene in Aqueous Electrolytes
- Creators
- Yury Gogotsi (Corresponding Author) - Drexel University, Materials Science and EngineeringIftikhar Hussain - Hong Kong University of Science and TechnologyFaisal Rehman - Hong Kong University of Science and TechnologyMohit SarafTeng Zhang - Drexel UniversityRuocun Wang - Drexel University, Materials Science and EngineeringTridip Das - California Institute of TechnologyZhengtang Luo - Hong Kong University of Science and TechnologyKaili Zhang - Hong Kong University of Science and Technology
- Publication Details
- ACS applied materials & interfaces, v 16(29), pp 38053-38060
- Publisher
- ACS Publications
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:001276288400001
- Scopus ID
- 2-s2.0-85199464880
- Other Identifier
- 991021893410104721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology