Journal article
Screening Conductive MXenes for Lithium Polysulfide Adsorption
Advanced functional materials, v 34(45), pn/a
01 Nov 2024
Abstract
MXenes are promising passive components that enable lithium-sulfur batteries (LSBs) by effectively trapping lithium polysulfides (LiPSs) and facilitating surface-mediated redox reactions. Despite numerous studies highlighting the potential of MXenes in LSBs, there are no systematic studies of MXenes' composition influence on polysulfide adsorption, which is foundational to their applications in LSB. Here, a comprehensive investigation of LiPS adsorption on seven MXenes with varying chemistries (Ti2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, V2CTx, Nb2CTx, and Nb4C3Tx), utilizing optical and analytical spectroscopic methods is performed. This work reports on the influence of polysulfide concentration, interaction time, and MXenes' chemistry (transition metal layer, carbide and carbonitride inner layer, surface terminations and structure) on the amount of adsorbed LiPSs and the adsorption mechanism. These findings reveal the formation of insoluble thiosulfate and polythionate complex species on the surfaces of all tested MXenes. Furthermore, the selective adsorption of lithium and sulfur, and the extent of conversion of the adsorbed species on MXenes varied based on their chemistry. For instance, Ti2CTx exhibits a strong tendency to adsorb lithium ions, while Mo2TiC2Tx is effective in trapping sulfur by forming long-chain polythionates. The latter demonstrates a significant conversion of intermediate polysulfides into low-order species. This study offers valuable guidance for the informed selection of MXenes in various functional components benefiting the future development of high-performance LSBs.
The expansion of the MXene family prompted various independent studies aimed at exploring the potential use of different MXenes as passive components to enhance the performance of lithium-sulfur batteries. In this study, seven distinct MXenes, exhibiting variations in their material chemistry, are screened to evaluate their capability for polysulfide adsorption and elucidate the mechanisms underlying this adsorption. image
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Details
- Title
- Screening Conductive MXenes for Lithium Polysulfide Adsorption
- Creators
- Geetha Valurouthu - Drexel UniversityMikhail Shekhirev - Drexel University, A.J. Drexel Nanomaterials InstituteMark Anayee - Drexel Univ, AJ Drexel Nanomat Inst, Dept Mat Sci & Engn, 3141 Chestnut St, Philadelphia, PA 19104 USARuocun (John) Wang - Drexel University, Materials Science and EngineeringKyle Matthews - Drexel University, Materials Science and EngineeringTetiana Parker - Drexel University, A.J. Drexel Nanomaterials InstituteRobert W. Lord - Drexel University, A.J. Drexel Nanomaterials InstituteDanzhen Zhang - Drexel University, A.J. Drexel Nanomaterials InstituteAlex Inman - Drexel University, A.J. Drexel Nanomaterials InstituteMarley Downes - Drexel UniversityChi Won Ahn - National NanoFab CenterVibha Kalra - Drexel University, Chemical and Biological EngineeringIl-Kwon Oh - Creative ResearchYury Gogotsi - Drexel University, Materials Science and Engineering
- Publication Details
- Advanced functional materials, v 34(45), pn/a
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- RS-2023-0030252; NRF-2021M3H4A1A03047333 / National Research Foundation of Korea (NRF) grants - Korean government ([MSIT] ); National Research Foundation of Korea; Ministry of Science & ICT (MSIT), Republic of Korea 1919177 / NSF-PFI-TT program Giner, Inc. DE-EE0009646 / DOE-EERE program; United States Department of Energy (DOE) DE-SC0021521 / U.S. Department of Energy (DOE); United States Department of Energy (DOE) CHE-2318105 / US National Science Foundation; National Science Foundation (NSF) DE-SC0021521 / DOE SBIR program; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; Chemical and Biological Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:001237360900001
- Scopus ID
- 2-s2.0-85194914364
- Other Identifier
- 991021889037204721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter