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

被引：848

作者：

Yang, Sheng ^{[1
,2
]}

Zhang, Panpan ^{[1
,2
]}

Wang, Faxing ^{[1
,2
]}

Ricciardulli, Antonio Gaetano ^{[3
]}

Lohe, Martin R. ^{[1
,2
]}

Blom, Paul W. M. ^{[3
]}

Feng, Xinliang ^{[1
,2
]}

机构：

[1] Tech Univ Dresden, Chair Mol Funct Mat, Mommsenstr 4, D-01069 Dresden, Germany

[2] Tech Univ Dresden, Ctr Advancing Elect Dresden Cfaed, Mommsenstr 4, D-01069 Dresden, Germany

[3] Max Planck Inst Polymer Res, Ackermannweg 10, D-55128 Mainz, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 47期

关键词：

electrochemistry; etching; MXene; supercapacitors; Two-dimensional materials; TI3C2; INTERCALATION; EXFOLIATION;

D O I：

10.1002/anie.201809662

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 mm 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 mFcm(-2) and 439 Fcm(-3), respectively, at a scan rate of 10 mVs(-1), superior to those of LiF/HCl-etched MXenes. Our strategy paves a safe way to the scalable synthesis and application of MXene materials.

引用

页码：15491 / 15495

页数：5

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