Volume 130, Issue 47 pp. 15717-15721
Zuschrift

Fluoride-Free Synthesis of Two-Dimensional Titanium Carbide (MXene) Using A Binary Aqueous System

Dr. Sheng Yang

Dr. Sheng Yang

Chair of Molecular Functional Materials and Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany

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Panpan Zhang

Panpan Zhang

Chair of Molecular Functional Materials and Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany

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Faxing Wang

Faxing Wang

Chair of Molecular Functional Materials and Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany

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Antonio Gaetano Ricciardulli

Antonio Gaetano Ricciardulli

Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

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Dr. Martin R. Lohe

Dr. Martin R. Lohe

Chair of Molecular Functional Materials and Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany

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Prof. Paul W. M. Blom

Prof. Paul W. M. Blom

Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

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Prof. Xinliang Feng

Corresponding Author

Prof. Xinliang Feng

Chair of Molecular Functional Materials and Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Mommsenstraße 4, 01069 Dresden, Germany

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First published: 05 October 2018
Citations: 335

Abstract

Two-dimensional (2D) titanium carbide (Ti3C2) is emerging as an important member of the MXene family. However, fluoride-based synthetic procedures remain an impediment to the practical applications of this promising class of materials. Here we demonstrate an efficient fluoride-free etching method based on the anodic corrosion of titanium aluminium carbide (Ti3AlC2) in a binary aqueous electrolyte. The dissolution of aluminium followed by in situ intercalation of ammonium hydroxide results in the extraction of carbide flakes (Ti3C2Tx, T=O, OH) with sizes up to 18.6 μm and high yield (over 90 %) of mono- and bilayers. All-solid-state supercapacitor based on exfoliated sheets exhibits high areal and volumetric capacitances of 220 mF cm−2 and 439 F cm−3, respectively, at a scan rate of 10 mV s−1, superior to those of LiF/HCl-etched MXenes. Our strategy paves a safe way to the scalable synthesis and application of MXene materials.

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