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• W4377013511 abstract "Accomplishing a green hydrogen economy in reality through water spitting ultimately relies upon earth-abundant efficient electrocatalysts that can simultaneously accelerate the oxygen and hydrogen evolution reactions (OER and HER). The perspective of electronic structure modulation via interface engineering is of great significance to optimize electrocatalytic output but remains a tremendous challenge. Herein, an efficient tactic has been explored to prepare nanosheet-assembly tumbleweed-like CoFeCe-containing precursors with time-/energy-saving and easy-operating features. Subsequently, the final metal phosphide materials containing multiple interfaces, denoted CoP/FeP/CeOx, have been synthesized via the phosphorization process. Through the optimization of the Co/Fe ratio and the content of the rare-earth Ce element, the electrocatalytic activity has been regulated. As a result, bifunctional Co3Fe/Ce0.025 reaches the top of the volcano for both OER and HER simultaneously, with the smallest overpotentials of 285 mV (OER) and 178 mV (HER) at 10 mA cm-2 current density in an alkaline environment. Multicomponent heterostructure interface engineering would lead to more exposed active sites, feasible charge transport, and strong interfacial electronic interaction. More importantly, the appropriate Co/Fe ratio and Ce content can synergistically tailor the d-band center with a downshift to enhance the per-site intrinsic activity. This work would provide valuable insights to regulate the electronic structure of superior electrocatalysts toward water splitting by constructing rare-earth compounds containing multiple heterointerfaces." @default.
• W4377013511 created "2023-05-19" @default.
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• W4377013511 date "2023-05-18" @default.
• W4377013511 modified "2023-10-17" @default.
• W4377013511 title "Heterostructure Interface Engineering in CoP/FeP/CeO_<i>x</i> with a Tailored d-Band Center for Promising Overall Water Splitting Electrocatalysis" @default.
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• W4377013511 doi "https://doi.org/10.1021/acs.inorgchem.3c00876" @default.
• W4377013511 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37200596" @default.
• W4377013511 hasPublicationYear "2023" @default.
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