Related references
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Junyuan Xu et al.
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Leigang Li et al.
Summary: This Progress Report summarizes recent research progress in advanced electrocatalysts for improved acidic OER performance. It discusses fundamental understanding about acidic OER including reaction mechanisms and atomic understanding for rational design of efficient electrocatalysts. It also provides an overview of the progress in the design and synthesis of advanced acidic OER electrocatalysts in terms of catalyst category.
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Li An et al.
Summary: The review focuses on understanding the oxygen evolution reaction (OER) mechanisms in acid, analyzing strategies to enhance activity and stability, and summarizing state-of-the-art catalysts for OER. Prevailing OER mechanisms are reviewed for designing efficient electrocatalysts, approaches to improve activity are discussed, and factors affecting catalyst stability are analyzed. Noble-metal-based OER catalysts and non-noble-metal-based catalysts progress are reviewed, and challenges and perspectives for developing active and robust OER catalysts in acid are discussed.
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Summary: The study successfully synthesized ultra-small metal Sn-RuO2 nanoparticles supported on N-doped carbon polyhedral and optimized the catalyst to reduce overpotential. Through density functional theory calculations and experimental validation, this catalyst showed excellent long-term stability and efficient water splitting activity.
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Chao Lin et al.
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Lin Tian et al.
Summary: Zero-dimensional carbon quantum dots have drawn increasing attention for their unique properties such as low cost, large surface area, high electrical conductivity, and rich functional groups. They show promise as functional materials in energy conversion through electrocatalysis, enhancing conductivity and optimizing electronic structure.
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Yanrong Xue et al.
Summary: The sulfate-functionalized RuFeOx catalyst, with both sulfate anion and Fe cation doping, shows remarkable OER performance with low overpotential and enhanced stability. The sulfate dopants weaken the adsorption of *OO-H intermediate, while Fe dopants promote the deprotonation of water molecules for *OOH formation, contributing to the excellent OER activity and stability of S-RuFeOx.
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Jiajian Gao et al.
Summary: Water oxidation, or the oxygen evolution reaction (OER), is crucial for providing protons and electrons needed for hydrogen generation, electrochemical CO2 reduction, and nitrogen fixation. Developing highly active, stable, and precious-metal-free electrocatalysts for acidic OER is important for large-scale PEM electrolyzer applications. Various precious-metal-free catalysts have shown promising activity and stability for acidic OER, offering alternatives to the limited iridium and ruthenium oxides currently used in PEM electrolyzers.
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Summary: The study developed sodium-decorated amorphous/crystalline RuO2 with rich oxygen vacancies as a pH-universal OER electrocatalyst, showing remarkable acid resistance and high catalytic stability. The introduction of Na dopant and oxygen vacancy in RuO2 was found to lower the energy barrier for OER by weakening the adsorption strength of the OER intermediates.
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Christine Minke et al.
Summary: Proton exchange membrane water electrolysis (PEMWE) is a key technology for future sustainable energy systems, using iridium as catalyst for the oxygen evolution reaction. To meet the immense future iridium demand, it is essential to reduce iridium catalyst loading in PEM electrolysis cells and develop a recycling infrastructure.
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Qing Yao et al.
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Summary: In order to enhance the performance of AEMWE, a well-designed liquid/gas diffusion layer (LGDL) termed NiMPL-PTL was developed, which reduced transport polarization and increased contact area, leading to measurable performance improvements in AEMWE.
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Zhaoping Shi et al.
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Summary: The lattice oxygen-mediated mechanism (LOM) derived from lattice oxygen redox chemistry is playing a significant role in solid-state OER electrocatalysts, providing insights into intrinsic activity and surface reconstruction issues, guiding the exploration of efficient electrocatalysts. Strategies for triggering lattice oxygen redox chemistry to promote intrinsic OER activity, along with theoretical calculations and experimental measurements, are crucial in this research area.
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