https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37374 1/2) of Gd₂O₃-Co/NG is 100 mV more positive than that of Co/NG and even close to commercial Pt/C. The density functional theory calculation and spectroscopic analysis demonstrate that, owing to intrinsic charge redistribution at the engineered interface of Gd₂O₃/Co, the coupled Gd₂O₃-Co can break the OOH*-OH* scaling relation and result in a good balance of OOH* and OH* binding on Gd₂O₃-Co surface. For practical application, a rechargeable Zn-air battery employing Gd₂O₃-Co/NG as an air-cathode achieves a large power density and excellent charge-discharge cycle stability.]]> Mon 29 Jan 2024 18:04:04 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45543 4 or Fe-N₄ planar configuration. The developed Ni-N₄/GHSs/Fe-N,₄ Janus material exhibits excellent bifunctional electrocatalytic performance, in which the outer Fe-N₄ clusters dominantly contribute to high activity toward the oxygen reduction reaction (ORR), while the inner Ni-N₄ clusters are responsible for excellent activity toward the oxygen evolution reaction (OER). Density functional theory calculations demonstrate the structures and reactivities of Fe-N₄ and Ni-N₄ for the ORR and OER. The Ni-N₄/GHSs/Fe-N₄ endows a rechargeable Zn–air battery with excellent energy efficiency and cycling stability as an air-cathode, outperforming that of the benchmark Pt/C+RuO₂ air-cathode. The current work paves a new avenue for precise control of single-atom sites on carbon surface for the high-performance and selective electrocatalysts.]]> Mon 29 Jan 2024 18:00:27 AEDT ]]>