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Summary: Interface engineering is an effective strategy for improving catalytic activities. In this study, FeP@CoP core-shell catalyst was developed, which showed high current density and low overpotential for water splitting. Density functional theory simulations revealed the optimal adsorption energy at the FeP@CoP interface. Additionally, the catalyst exhibited excellent performance in electrolyte and was able to be driven by a solar panel.
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Ning Wang et al.
Summary: The integration of cathodic hydrogen evolution reaction (HER) with thermodynamically favorable anodic oxidation reactions provides a sustainable alternative for electrochemical valorization. In this study, we developed an atomic Ni modified CoP electrocatalyst with abundant built-in mesopores from ordered macroporous ZIF-67 single crystals, showing high HER performance. Furthermore, this bifunctional electrocatalyst exhibited outstanding activity for ethylene glycol oxidation reaction (EGOR) in alkaline and complex electrolytes, enabling hydrogen and commodity chemical production in a pair-electrolysis system.
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Xueqin Mu et al.
Summary: RuRh2 bimetallene nanoring with rich structural defects exhibits excellent HER performance in various media, showing high activity in acidic conditions and maintaining stability even after prolonged cycles, as well as outstanding performance in alkaline and neutral media. The atomic-scale structure observation and density functional theory calculations reveal that the grain boundaries and symmetry breaking of RuRh2 bimetallene contribute to its enhanced electrocatalytic performance by weakening adsorption strength of atomic hydrogen and facilitating electron transfer and reactant adsorption.
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Sk Riyajuddin et al.
Summary: This study introduces a superhydrophilic homogeneous bimetallic phosphide catalyst Ni2P-CuP2, which exhibits ultralow overpotentials for water electrolysis in acidic and alkaline mediums and excellent stability at high current densities, showing promising potential for green fuel production.
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Lei Yang et al.
Summary: Constructing heterostructure of NiP2/NiSe2 electrocatalysts with optimized interface and electron redistribution can significantly enhance catalytic performance towards water splitting, showing promising potential for future development of efficient and durable catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
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Yi Liu et al.
Summary: By using Se-doped phosphides inside nitrogen-doped carbon as catalysts, this study successfully improved the performance of electrocatalytic hydrogen evolution reaction in alkaline media. Experimental and theoretical calculations showed that the CoSe phase generated by Se modification facilitated faster charge transfer and optimized the rate-determining step, enhancing the reaction kinetics of the catalyst.
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Chemistry, Physical
Wei Li et al.
Summary: Designing a composite electrocatalyst with Co/CoP heterojunction embedded within a hierarchically ordered carbon matrix resulted in significantly enhanced catalytic activity due to optimized active site exposure and proton transfer facilitation. The Co/CoP@HOMC composites exhibited outstanding performance in hydrogen and oxygen evolution reactions, surpassing the performance of traditional Pt-based catalysts in an alkaline electrolyzer.
ADVANCED ENERGY MATERIALS
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A. A. Yadav et al.
Summary: This study successfully synthesized a 3D nanoflower-like porous CoMoS4 electrocatalyst through a simple hydrothermal synthesis route assisted with ultrasound for the overall water splitting reaction. The CoMoS4 electrode showed low overpotentials for both the oxygen evolution reaction (250 mV) and hydrogen evolution reaction (141 mV) at a current density of 10 mA/cm(2).
ULTRASONICS SONOCHEMISTRY
(2021)
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Zi-You Yu et al.
Summary: The hydrogen economy has emerged as a promising alternative to the current hydrocarbon economy, involving the use of renewable energy to split water into hydrogen and oxygen for further utilization as clean fuel. Among various water electrolysis technologies, alkaline water splitting has been commercialized for over 100 years and is considered the most mature and economic option. Advanced nonprecious metal electrocatalysts have shown potential for improving the efficiency and stability of alkaline water splitting processes, with a focus on catalyst synthesis and performance improvement.
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Summary: This study presents a novel electrocatalyst Ru/Mo2C@NC with excellent hydrogen evolution reaction (HER) activity, demonstrating low overpotentials and long-term stability in various media. The outstanding performance of the catalyst is attributed to the construction of new active sites and effective electron transfer mechanism through the Schottky structure.
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