“…They can be expressed as M n +1 X n T x , where M represents an early transition metal, X can be carbon and/or nitrogen, T refers to surface functional groups (−OH, –O, –F, etc. ), and n = 1, 2, 3, or 4. − Ti 3 C 2 T x MXene is one of the most studied MXenes, which is generally produced by the room temperature Al etching of Ti 3 AlC 2 by hydrofluoric acid (HF). − Due to the excellent physical and chemical properties of Ti 3 C 2 T x MXene, such as good chemical properties, high electrical conductivity, outstanding mechanical properties, large specific surface area, and rich surface functional groups, Ti 3 C 2 T x MXene has proven to be a promising candidate for electrochemical and flexible sensors. , …”