Uncovering the Promotion of CeO /CoS Heterostructure with Specific Spatial Architectures on Oxygen Evolution Reaction.

Structural engineering and compositional controlling are extensively applied in rationally designing and fabricating advanced freestanding electrocatalysts. The key relationship between the spatial distribution of components and enhanced electrocatalysis performance still needs further elaborate elucidation. Here, CeO substrate supported CoS (CeO -CoS ) and CoS with CeO surface decorated (CoS -CeO ) materials are constructed to comprehensively investigate the origin of spatial architectures for the oxygen evolution reaction (OER).

Interfacial Defect Engineering for Improved Portable Zinc-Air Batteries with a Broad Working Temperature.

Atomic-thick interfacial dominated bifunctional catalyst NiO/CoO transition interfacial nanowires (TINWs) with abundant defect sites display high electroactivity and durability in the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR). Density functional theory (DFT) calculations show that the excellent OER/ORR performance arises from the electron-rich interfacial region coupled with defect sites, thus enabling a fast-redox rate with lower activation barrier for fast electron transfer. When assembled as an air-electrode, NiO/CoO TINWs delivered the high specific capacity of 842.