Journal article
Direct Assessment of Nanoconfined Water in 2D Ti 3 C 2 Electrode Interspaces by a Surface Acoustic Technique
Journal of the American Chemical Society, Vol.140(28), pp.8910-8917
18 Jul 2018
PMID: 29928793
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Although significant progress has been achieved in understanding of ion-exchange mechanisms in the new family of 2D transition metal carbides and nitrides known as MXenes, direct gravimetric assessment of water insertion into the MXene interlayer spaces and mesopores has not been reported so far. Concurrently, the latest research on MXene and Birnessite electrodes shows that nanoconfined water dramatically improves their gravimetric capacity and rate capability. Hence, quantification of the amount of confined water in solvated electrodes is becoming an important goal of energy-related research. Using the recently developed and highly sensitive method of in situ hydrodynamic spectroscopy (based on surface-acoustic probing of solvated interfaces), we provide clear evidence that typical cosmotropic cations (Li
, Mg
, and Al
) are inserted into the MXene interspaces in their partially hydrated form, in contrast to the insertion of chaotropic cations (Cs
and TEA
), which effectively dehydrate the MXene. These new findings provide important information about the charge-storage mechanisms in layered materials by direct quantification and efficient control (management) over the amount of confined fluid in a variety of solvated battery/supercapacitor electrodes. We believe that the proposed monitoring of water content as a function of the nature of ions can be equally applied to solvated biointerfaces, such as the ion channels of membrane proteins.
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Details
- Title
- Direct Assessment of Nanoconfined Water in 2D Ti 3 C 2 Electrode Interspaces by a Surface Acoustic Technique
- Creators
- Netanel Shpigel - Department of Chemistry and BINA-BIU Center for Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat-Gan 5290002 , IsraelMikhael D Levi - Department of Chemistry and BINA-BIU Center for Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat-Gan 5290002 , IsraelSergey Sigalov - Department of Chemistry and BINA-BIU Center for Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat-Gan 5290002 , IsraelTyler S Mathis - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute , Drexel University , Philadelphia , Pennsylvania 19104 , United StatesYury Gogotsi - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute , Drexel University , Philadelphia , Pennsylvania 19104 , United StatesDoron Aurbach - Department of Chemistry and BINA-BIU Center for Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat-Gan 5290002 , Israel
- Publication Details
- Journal of the American Chemical Society, Vol.140(28), pp.8910-8917
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991014969870204721
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- Collaboration types
- Domestic collaboration
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- Web of Science research areas
- Chemistry, Multidisciplinary