Electrochemically Fabricated Surface-Mesostructured CuNi Bimetallic Catalysts for Hydrogen Production in Alkaline Media

Bai, Jingyuan; Zhang, Jin; Eiler, Konrad; Zhou, Yang; Fan, Longyi; Yang, Dalong; Zhang, Meilin; Hou, Yupu; Guan, Ren Guo; Sort, Jordi; Pellicer, Eva

doi:10.3390/nano12010118

Cited by 6 publications

(2 citation statements)

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“…Bimetallic catalysts often exhibit synergistic effects, where the interaction between the two metals leads to improved catalytic activity, selectivity, and stability. These catalysts have been extensively explored in processes such as hydrogen production [137], carbon dioxide conversion [138], and selective oxidation reactions [139].…”

Section: Energy Applicationsmentioning

confidence: 99%

Surface Engineering of Metals: Techniques, Characterizations and Applications

Ramezani

Ripin

Pasang

et al. 2023

Metals

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This paper presents a comprehensive review of recent advancements in surface engineering of metals, encompassing techniques, characterization methods and applications. The study emphasizes the significance of surface engineering in enhancing the performance and functionality of metallic materials in various industries. The paper discusses the different techniques employed in surface engineering, including physical techniques such as thermal spray coatings and chemical techniques such as electroplating. It also explores characterization methods used to assess the microstructural, topographical, and mechanical properties of engineered surfaces. Furthermore, the paper highlights recent advancements in the field, focusing on nanostructured coatings, surface modification for corrosion protection, biomedical applications, and energy-related surface functionalization. It discusses the improved mechanical and tribological properties of nanostructured coatings, as well as the development of corrosion-resistant coatings and bioactive surface treatments for medical implants. The applications of surface engineering in industries such as aerospace, automotive, electronics, and healthcare are presented, showcasing the use of surface engineering techniques to enhance components, provide wear resistance, and improve corrosion protection. The paper concludes by discussing the challenges and future directions in surface engineering, highlighting the need for further research and development to address limitations and exploit emerging trends. The findings of this review contribute to advancing the understanding of surface engineering and its applications in various sectors, paving the way for future innovations and advancements.

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Section: Energy Applicationsmentioning

confidence: 99%

Surface Engineering of Metals: Techniques, Characterizations and Applications

Ramezani

Ripin

Pasang

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

“…Moreover, this system exhibits interesting functional properties such as resistance to corrosion, high tensile strength, and good wear resistance depending on the composition. Recently, our group demonstrated the template-assisted electrodeposition of microporous and mesoporous CuNi films, in which the sample with the least Ni content shows the highest specific activity [ 21 , 32 ]. This is due to the surface composition and spatial arrangement exerting a remarkable influence on the hydrogen adsorption and desorption.…”

Section: Introductionmentioning

confidence: 99%

A Comparison between Porous to Fully Dense Electrodeposited CuNi Films: Insights on Electrochemical Performance

et al. 2023

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Nanostructuring of metals is nowadays considered as a promising strategy towards the development of materials with enhanced electrochemical performance. Porous and fully dense CuNi films were electrodeposited on a Cu plate by electrodeposition in view of their application as electrocatalytic materials for the hydrogen evolution reaction (HER). Porous CuNi film were synthesized using the hydrogen bubble template electrodeposition method in an acidic electrolyte, while fully dense CuNi were electrodeposited from a citrate-sulphate bath with the addition of saccharine as a grain refiner. The prepared films were characterized chemically and morphologically by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). The Rietveld analysis of the XRD data illustrates that both CuNi films have a nanosized crystallite size. Contact angle measurements reveal that the porous CuNi film exhibits remarkable superhydrophobic behavior, and fully dense CuNi film shows hydrophilicity. This is predominately ascribed to the surface roughness of the two films. The HER activity of the two prepared CuNi films were investigated in 1 M KOH solution at room temperature by polarization measurements and electrochemical impedance spectroscopy (EIS) technique. Porous CuNi exhibits an enhanced catalysis for HER with respect to fully dense CuNi. The HER kinetics for porous film is processed by the Volmer–Heyrovsky reaction, whereas the fully dense counterpart is Volmer-limited. This study presents a clear comparison of HER behavior between porous and fully dense CuNi films.

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