Ruthenium single‐atom modulated Ti3C2Tx MXene for efficient alkaline electrocatalytic hydrogen production
Yu Zou,
Seyedeh Alieh Kazemi,
Ge Shi,
Junxian Liu,
Yuwei Yang,
Nicholas M. Bedford,
Kaicai Fan,
Yiming Xu,
Huaiqin Fu,
Mengyang Dong,
Mohammad Al‐Mamun,
Yu Lin Zhong,
Huajie Yin,
Yun Wang,
Porun Liu,
Huijun Zhao
Affiliations
Yu Zou
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Seyedeh Alieh Kazemi
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Ge Shi
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Junxian Liu
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Yuwei Yang
School of Chemical Engineering The University of New South Wales Sydney New South Wales Australia
Nicholas M. Bedford
School of Chemical Engineering The University of New South Wales Sydney New South Wales Australia
Kaicai Fan
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Yiming Xu
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Huaiqin Fu
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Mengyang Dong
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Mohammad Al‐Mamun
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Yu Lin Zhong
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Huajie Yin
Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Centre for Excellence in Nanoscience Institute of Solid State Physics, Chinese Academy of Sciences Hefei P. R. China
Yun Wang
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Porun Liu
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Huijun Zhao
Centre for Catalysis and Clean Energy, School of Environment and Science Griffith University Southport Queensland Australia
Abstract Single‐atoms (SAs) supported on various substrates have emerged as a new form of electrocatalysts for hydrogen evolution reaction (HER). The exfoliated MXenes possess rich defects/vacancies and surface oxygen groups, can be favorably utilized to anchor SAs. Here, we take advantage of the exfoliated Ti3C2Tx to anchor Ru‐SAs on Ti3C2Tx through a wet‐chemistry impregnation process. The obtained RuSA@Ti3C2Tx possesses excellent HER activity, especially under high current densities. Remarkably, RuSA@Ti3C2Tx can readily attain high current densities of 1 and 1.5 A cm−2 at low over potentials of 425.7 and 464.6 mV, respectively, demonstrating its potential for practical applications. The A1g vibration frequency shift of the Raman spectrum is innovatively used to probe the surface OH coverage on Ti3C2Tx, providing critical information for mechanistic studies. The experimental and theoretical studies reveal that the superior HER electrocatalytic activity of RuSA@Ti3C2Tx results from the Ru‐SAs enhanced H2O adsorption and dissociation, and promoted H2 formation.
