Thermoelectric Modulation of Neat Ti3C2Tx MXenes by Finely Regulating the Stacking of Nanosheets

Investigation of dispersing solvents on processing Ti 3 C 2 T x thin films revealed that deionized water is superior to realize tight stacking and high orientation of MXene nanosheets. A simultaneous elevation of Seebeck coefficient and electrical conductivity of neat Ti 3 C 2 T x films is achieved by increasing the centrifugal speed of MXene aqueous suspensions due to the energy filtering effect. Further construction of Ti 3 C 2 T x nanocomposites significantly strengthens Seebeck coefficient yet disrupts the stacking of MXene nanosheets.