Alkylammonium Cation Intercalation into Ti3C2 (MXene): Effects on Properties and Ion-Exchange Capacity Estimation. Ghidiu, M., Kota, S., Halim, J., Sherwood, A. W., Nedfors, N., Rosen, J., Mochalin, V. N., & Barsoum, M. W. Chemistry of Materials, 29(3):1099–1106, February, 2017. ![Alkylammonium Cation Intercalation into Ti3C2 (MXene): Effects on Properties and Ion-Exchange Capacity Estimation [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Ti3C2Tx MXene intercalated with Li+ ions was produced and ion-exchanged with a series of trimethylalkylammonium (AA) cations of increasing alkyl chain length. A discontinuous expansion in the MXene layer spacing was observed, attributed to complete packing of the interlayer space at a critical chain length. The latter was used to estimate the number of cations per Ti3C2 formula unit, which was found to be in good agreement with a similar quantification obtained from X-ray photoelectron spectroscopy, energy-dispersive spectroscopy, and elemental analysis. The system was also modeled using density functional theory and molecular dynamics, arriving at cation concentrations in the same range. The intercalated AA cations led to tunable increases in resistivity of the normally highly electrically conductive MXene and were investigated as interlayer pillars in electrochemical capacitors.
@article{ghidiu_alkylammonium_2017,
title = {Alkylammonium {Cation} {Intercalation} into {Ti}3C2 ({MXene}): {Effects} on {Properties} and {Ion}-{Exchange} {Capacity} {Estimation}},
volume = {29},
issn = {0897-4756},
shorttitle = {Alkylammonium {Cation} {Intercalation} into {Ti}3C2 ({MXene})},
url = {https://doi.org/10.1021/acs.chemmater.6b04234},
doi = {10.1021/acs.chemmater.6b04234},
abstract = {Ti3C2Tx MXene intercalated with Li+ ions was produced and ion-exchanged with a series of trimethylalkylammonium (AA) cations of increasing alkyl chain length. A discontinuous expansion in the MXene layer spacing was observed, attributed to complete packing of the interlayer space at a critical chain length. The latter was used to estimate the number of cations per Ti3C2 formula unit, which was found to be in good agreement with a similar quantification obtained from X-ray photoelectron spectroscopy, energy-dispersive spectroscopy, and elemental analysis. The system was also modeled using density functional theory and molecular dynamics, arriving at cation concentrations in the same range. The intercalated AA cations led to tunable increases in resistivity of the normally highly electrically conductive MXene and were investigated as interlayer pillars in electrochemical capacitors.},
number = {3},
urldate = {2019-10-22},
journal = {Chemistry of Materials},
author = {Ghidiu, Michael and Kota, Sankalp and Halim, Joseph and Sherwood, Alexander W. and Nedfors, Nils and Rosen, Johanna and Mochalin, Vadym N. and Barsoum, Michel W.},
month = feb,
year = {2017},
pages = {1099--1106}
}
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