Ti3C2Tx MXene characterization produced from SHS-ground Ti3AlC2

By A. Pazniak, P. Bazhin, N. Shplis, E. Kolesnikov, I. Shchetinin, A. Komissarov, J. Polčak, A. Stolin, D. Kuznetsov. 2019

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Abstract MXenes are an emerging family of two-dimensional (2D) early transition metal carbides/nitrides that are produced by selective A-element chemical etching from 3D MAX phase counterpart. Herein we report a low-cost method combining self-propagation high-temperature synthesis (SHS) and grinding to produce Ti3AlC2 precursor and further its usage to obtain Ti3C2Tx MXene. The SHS-ground precursor requires the same etching conditions as pressure-less synthesized precursors to fully etch A-layer and convert the 3D structure into 2D state. The obtained MXenes are atomically-thin flakes with an average lateral size of 1–2 μm. The room temperature electrical resistivity of Ti3C2Tx based 11 μm-thick film ranges between 295 and 317 μΩ·cm. SHS combining with grinding in one step can be considered as a scalable method to MXene synthesis.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/2c3d815df609a33b1f519050ec83987500907def