Fig. 6.

a Stability of colloidal d-Ti₃C₂T_x in different environments. b Time constants of colloidal d-Ti₃C₂T_x in different environments. c Photograph of Ti₃C₂T_x MXene dispersion stored statically (left) and by continuous stirring (right) after 20 days. d pH of Ti₃C₂T_x MXene aqueous dispersion as a function of time. e Atomic percentage of Ti(IV) obtained by X‐ray photoelectron spectroscopy for Ti₃C₂T_x. f Electrical conductivity of vacuum‐filtered films made from aged Ti₃C₂T_x MXene dispersions. g Photograph of as‐prepared MXene dispersions and the same dispersions on day 27 (from left to right: 7.7, 1, 0.1, 0.05, 0.005 mg mL⁻¹). h, i Atomic percentage of Ti(IV) and electrical conductivity of Ti₃C₂T_x dispersions at different storage times, respectively. a, b Reproduced with permissions from ref. [41]. Copyright (2017), American Chemical Society. c–i Reproduced with permissions from ref. [42]. Copyright (2020), Wiley–VCH