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- W2947855268 abstract "In the recent years, two-dimensional (2D) metal carbide and nitride (MXenes) materials have shown characteristics of promising electrocatalytic properties for hydrogen evolution reaction (HER). Here, by using density functional theory calculations, the etching and exfoliating properties of Cr2AlC to Cr2CO2 and electrocatalytic (for HER) properties with and without carbon defect were studied. Results show that etching the pristine Cr2AlC by HF solutions could intend to generate Cr2C MXenes with O* termination, that is, Cr2CO2, and Cr2CF2 and Cr2C(OH)2 will translate into Cr2CO2 even if they were generated first during the etching reactions. The exfoliation energy of multilayer Cr2CO2 into monolayer Cr2CO2 MXene is large (2.78 eV/nm2), and the delamination process requires Li+ (LiF) cation. Carbon vacancy is easily generated during the etching and exfoliation reactions, and the formation energy of carbon vacancy (1.71 and 1.59 eV with and without considering charge correction) of Cr2CO2 is lower than that o..." @default.
- W2947855268 created "2019-06-07" @default.
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- W2947855268 date "2019-05-31" @default.
- W2947855268 modified "2023-10-15" @default.
- W2947855268 title "Etching and Exfoliation Properties of Cr<sub>2</sub>AlC into Cr<sub>2</sub>CO<sub>2</sub> and the Electrocatalytic Performances of 2D Cr<sub>2</sub>CO<sub>2</sub> MXene" @default.
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- W2947855268 doi "https://doi.org/10.1021/acs.jpcc.9b03120" @default.
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