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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Isolated Ni-atom catalyst supported on Ti3C2T with an asymmetrical C-Ni-N structure for the hydrogen evolution
Haosen Yang1, Pengfei Wu1, Jiajing Pei2
1School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China.
Abstract:
Single-atom catalysts (SACs), distinguished by their exceptional atomic efficiency and modifiable coordination structures, find wide-ranging applicability, notably in the context of the hydrogen evolution reaction (HER). Herein, we synthesized a Ti3C2T-based Ni single-atom catalyst (Ni SA@N-Ti3C2T) by immersing a single Ni atom into the Ti vacancies of Ti3C2T and using a N-doping strategy. X-Ray adsorption fine structure revealed the formation of local Ni-N1C1 and an unsaturated C-Ni-N bridge configuration for isolated Ni species. Moreover, Ni SA@N-Ti3C2T exhibited an excellent HER performance with an overpotential of 63 mV at 10 mV cm-2. This work could enable use of MXene-based SACs in the HER.
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