Exfoliation and Delamination of Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> MXene Prepared <i>via</i> Molten Salt Etching Route - Archive ouverte HAL Access content directly
Journal Articles ACS Nano Year : 2021

Exfoliation and Delamination of Ti3C2Tx MXene Prepared via Molten Salt Etching Route


MXenes are two-dimensional metal carbides or nitrides that are currently proposed in many applications thanks to their unique attributes including high conductivity and accessible surface. Recently, a synthetic route was proposed to prepare MXenes from the molten salt etching of precursors allowing for the preparation of MXene (denoted as MS-MXenes, for molten salt MXene) with tuned surface termination groups, resulting in improved electrochemical properties. However, further delamination of as-prepared multilayer MS-MXenes still remains a major challenge. Here, we report on the successful exfoliation of MS-Ti 3 C 2 T x via the intercalation of the organic molecule TBAOH (tetrabutylammonium hydroxide), followed by sonication to separate the layers. The treatment time could be adapted to tune the wetting behavior of the MS-Ti 3 C 2 T x. As a result, a self-supported Clterminated MXene film could be prepared by filtration. Finally, MS-Ti 3 C 2 T x used as a Li-ion battery anode could achieve a high specific capacity of 225 mAh g −1 at a 1C rate together with an excellent rate capability of 95 mAh g −1 at 167C. These results also show that tuning of the surface chemistry of MXene is of key importance to this field with the likely result being increased electrochemical performance.
Fichier principal
Vignette du fichier
Manuscript.pdf (3.04 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03826847 , version 1 (09-11-2022)



Liyuan Liu, Metin Orbay, Sha Luo, Sandrine Duluard, Hui Shao, et al.. Exfoliation and Delamination of Ti3C2Tx MXene Prepared via Molten Salt Etching Route. ACS Nano, 2021, 16 (1), pp.111 - 118. ⟨10.1021/acsnano.1c08498⟩. ⟨hal-03826847⟩
76 View
168 Download



Gmail Facebook Twitter LinkedIn More