(183d) Evaluating Performance Variations in Ti3C2Tx Mxene Composite Polymer Electrolytes for Solid State Batteries: Analysis of Different Processing Techniques

This work studies the incorporation of Ti3C2Tx MXenes into polymer electrolytes for addressing the issue of low ionic conductivity in solid electrolytes. Herein, the effect of two distinct MXene integration methods, vacuum filtration and freeze-drying, will be compared. The electrochemical impedance spectroscopy and differential scanning calorimetry are employed to study the impact of MXene integration on the ionic conductivity and mobility within the polymer matrix. Remarkably, the findings revealed that freeze-dried MXene not only significantly reduces the crystallinity of the SPE by 4.9% but also elevates the ionic conductivity by an order of magnitude compared to its vacuum-filtered counterpart. The influence of material processing techniques on ionic conductivity was studied by equivalent circuit modeling and voigt circuit representation models. This study indicates the synergistic effects of MXene composites in energy storage applications, thereby unraveling the impact of processing conditions of this class of 2D materials in energy storage applications.