Sodium-Ion Intercalation Mechanism in MXene Nanosheets
The University of Tokyo · National Institute for Materials Science · +2 more institutions
Abstract
MXene, a family of layered compounds consisting of nanosheets, is emerging as an electrode material for various electrochemical energy storage devices including supercapacitors, lithium-ion batteries, and sodium-ion batteries. However, the mechanism of its electrochemical reaction is not yet fully understood. Herein, using solid-state (23)Na magic angle spinning NMR and density functional theory calculation, we reveal that MXene Ti3C2Tx in a nonaqueous Na(+) electrolyte exhibits reversible Na(+) intercalation/deintercalation into the interlayer space. Detailed analyses demonstrate that Ti3C2Tx undergoes expansion of the interlayer distance during the first sodiation, whereby desolvated Na(+) is…
Citation impact
- FWCI
- 24.02
- Percentile
- 100%
- References
- 61
Authors
9Topics & keywords
- Intercalation (chemistry)
- Electrochemistry
- Electrolyte
- Materials science
- Density functional theory
- Chemical engineering
- Supercapacitor
- Inorganic chemistry
- Affordable and clean energy