Synthesis of Two-Dimensional Nb<sub>1.33</sub>C (MXene) with Randomly Distributed Vacancies by Etching of the Quaternary Solid Solution (Nb<sub>2/3</sub>Sc<sub>1/3</sub>)<sub>2</sub>AlC MAX Phase
Joseph HalimDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, SwedenJustinas PališaitisDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, SwedenJun LuDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, SwedenJimmy ThörnbergDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, SwedenE. J. MoonDepartment of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United StatesM. PrecnerInstitute of Electrical Engineering, Slovak Academy of Sciences, Bratislava 84104, Slovak RepublicPer EklundDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, SwedenPer O. Å. PerssonDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, SwedenMichel W. BarsoumDepartment of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United StatesJohanna RosénDepartment of Physics, Chemistry, and Biology, Thin Film Physics Division, Linköping University, Linköping, Sweden
2018en
ABI
Аннотация
Introducing point defects in two-dimensional (2D) materials can alter or enhance their properties. Here, we demonstrate how etching a laminated (Nb2/3Sc1/3)2AlC MAX phase (solid solution) of both the Sc and Al atoms results in a 2D Nb1.33C material (MXene) with a large number of vacancies and vacancy clusters. This method is applicable to any quaternary, or higher, MAX phase, wherein one of the transition metals is more reactive than the other and could be of vital importance in applications such as catalysis and energy storage. We also report, for the first time, on the existence of solid solution (Nb2/3Sc1/3)3AlC2 and (Nb2/3Sc1/3)4AlC3 phases.
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