Related references
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Summary: This study presents a robust electrode composed of porous nickel foam and Fe-doped Ni3S2 nanosheet arrays for alkaline water electrolysis. The electrode exhibits high catalytic activity and stability, outperforming commercial electrodes.
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Liu Lin et al.
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Xuejun Zhai et al.
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Article
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Qilun Wang et al.
Summary: Polymer electrolyte membrane water electrolysis (PEMWE) is a promising technology for renewable hydrogen production, but the long-term stability of acidic oxygen evolution reaction (OER) catalysts poses a major challenge for large-scale industrialization. This review comprehensively discusses critical factors leading to catalyst instability and potential solutions, including mechanical peeling, substrate corrosion, active-site over-oxidation/dissolution, reconstruction, and collapse of oxide crystal structure through the lattice oxygen-participated reaction pathway. Personal prospects are provided for rigorous stability evaluation criteria, in situ/operando characterizations, economic feasibility, and practical electrolyzer consideration, emphasizing the ternary relationship of structure evolution, industrial-relevant activity, and stability as a roadmap towards PEMWE's ultimate application.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
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Jingwen Li et al.
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Summary: This review article highlights the importance of developing advanced heterogeneous catalysts for clean and sustainable energy, focusing on the synthetic methodologies for optimizing electrocatalysts through versatile surface overcoating engineering. Recent progress in this field is discussed, along with the correlation between catalyst intrinsic structures and electrocatalytic properties. The opportunities and perspectives of surface overcoating engineering for designing advanced catalysts and their broad applications are presented.
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Jiaxin Wang et al.
Summary: A series of high-efficiency OER electrocatalysts with unique nanoarray structure of NiCoFe LDHs on nickel foam were successfully prepared, showing superior performance compared to most systems. The ratio of Co to Fe can significantly modulate the electronic structure and affect the OER electrocatalytic activity.
CHEMISTRY-A EUROPEAN JOURNAL
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Harish S. Chavan et al.
Summary: This study successfully prepared a catalyst with excellent electrocatalytic performance by changing the composition ratio of nickel-vanadium layered double hydroxides. The optimized catalyst exhibited ultralow overpotentials and Tafel slope, as well as long-term stability. This research is of great importance for the design of advanced water oxidation catalysts.
Review
Chemistry, Multidisciplinary
Ming Zhou et al.
Summary: Random alloy and intermetallic nanocrystals exhibit unique physicochemical properties, making them ideal models for structure-to-property studies and finding applications in electrocatalysis, photocatalysis, magnetism, etc. Scientific research has shown significant interest in these nanocrystals and advancements have been made in synthetic principles and strategies.
Article
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ACS APPLIED MATERIALS & INTERFACES
(2021)
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ACS APPLIED MATERIALS & INTERFACES
(2021)
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Shuai Cao et al.
Summary: A 3D superhydrophilic/superaerophobic hierarchical rod-sheet structure of NiFe-based layered double hydroxides coupled with cobalt carbonate hydroxide has been synthesized, showing excellent oxygen evolution reaction (OER) performances. The unique stepped hierarchical rod-sheet structure not only benefits the catalytic activity, electron transfer, and active sites exposure, but also promotes electrolyte diffusion and bubble release. Additionally, a water-splitting device assembled with this structure demonstrated stable operation for 200 hours. The strategy of engineering stepped hierarchical structures with synergistic effect may provide a new pathway for synthesizing highly efficient OER electrocatalysts.
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