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Meeting 2027 TMS Annual Meeting & Exhibition
Symposium 2D Materials – Preparation, Properties, Modeling & Applications
Presentation Title Work Function Engineering through Cation Intercalation in MXenes
Author(s) Arunoda Lakmal, Christopher Shuck
On-Site Speaker (Planned) Arunoda Lakmal
Abstract Scope Engineering the work function of MXenes offers a versatile strategy to tailor their electronic properties for catalysis, sensing, energy storage, and iontronic devices. This work investigates the influence of alkali, alkaline-earth, and transition-metal cations on the work function of MXene films. While Ti3C2Tx serves as the primary model system, the study is extended to other MXene chemistries to establish broader design levers. Controlled intercalation is achieved through solution-based ion exchange, and the resulting changes in local surface potential are measured using Kelvin probe force microscopy (KPFM). These measurements are correlated with structural evolution from X-ray diffraction and changes in surface chemistry and electronic structure from X-ray photoelectron spectroscopy. By establishing relationships between cation identity, interlayer interactions, and work-function modulation, this study advances a general framework for engineering the electronic properties of diverse MXenes for emerging electronic, electrochemical, and catalytic applications.
Proceedings Inclusion? Planned:
Keywords Electronic Materials, Surface Modification and Coatings, Characterization

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