Transition‐Metal Dichalcogenide NiTe<sub>2</sub>: An Ambient‐Stable Material for Catalysis and Nanoelectronics
Silvia Nappini, Danil W. Boukhvalov, Gianluca D’Olimpio, Libo Zhang, B. Ghosh, Chia‐Nung Kuo, Haoshan Zhu, Jia Cheng, M. Nardone, L. Ottaviano, Debashis Mondal, Raju Edla, Jun Fuji, C. S. Lue, I. Vobornik, J. A. Yarmoff, Amit Agarwal, Lin Wang, Lixue Zhang, Federica Bondino, Antonio Politano
Abstract
Abstract By means of theory and experiments, the application capability of nickel ditelluride (NiTe 2 ) transition‐metal dichalcogenide in catalysis and nanoelectronics is assessed. The Te surface termination forms a TeO 2 skin in an oxygen environment. In ambient atmosphere, passivation is achieved in less than 30 min with the TeO 2 skin having a thickness of about 7 Å. NiTe 2 shows outstanding tolerance to CO exposure and stability in water environment, with subsequent good performance in both hydrogen and oxygen evolution reactions. NiTe 2 ‐based devices consistently demonstrate superb ambient stability over a timescale as long as one month. Specifically, NiTe 2 has been implemented in a device that exhibits both superior performance and environmental stability at frequencies above 40 GHz, with possible applications as a receiver beyond the cutoff frequency of a nanotransistor.