An Organic Solvent-Assisted Intercalation and Collection (OAIC) for Ti(3)C(2)T(x) MXene with Controllable Sizes and Improved Yield

A good method of synthesizing Ti(3)C(2)T(x) (MXene) is critical for ensuring its success in practical applications, e.g., electromagnetic interference shielding, electrochemical energy storage, catalysis, sensors, and biomedicine. The main concerns focus on the moderation of the approach, yield, and product quality. Herein, a modified approach, organic solvent-assisted intercalation and collection, was developed to prepare Ti(3)C(2)T(x) flakes. The new approach simultaneously solves all the concerns, featuring a low requirement for facility (centrifugation speed < 4000 rpm in whole process), gram-level preparation with remarkable yield (46.3%), a good electrical conductivity (8672 S cm(−1)), an outstanding capacitive performance (352 F g(−1)), and easy control over the dimension of Ti(3)C(2)T(x) flakes (0.47–4.60 μm(2)). This approach not only gives a superb example for the synthesis of other MXene materials in laboratory, but sheds new light for the future mass production of Ti(3)C(2)T(x) MXene. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-021-00705-4.