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Water electrolysis affords a promising approach to large‐scale hydrogen yield, but its efficiency is restrained by the sluggish water dissociation kinetics. Here, an efficient bifunctional electrocatalyst of in situ formed crystalline nickel metaphosphate on amorphous NiMoOx nanoarrays supported on nickel foam (c‐Ni2P4O12/a‐NiMoOx/NF) for both hydrogen evolution reaction (HER) and oxygen evolution...
Most transition metal‐based catalysts for electrocatalytic oxygen evolution reaction (OER) undergo surface reconstruction to generate real active sites favorable for high OER performance. Herein, how to use self‐reconstruction as an efficient strategy to develop novel and robust OER catalysts by designing pre‐catalysts with flexible components susceptible to OER conditions is proposed. The NiFe‐based...
Single‐phase perovskite oxides that contain nonprecious metals have long been pursued as candidates for catalyzing the oxygen evolution reaction, but their catalytic activity cannot meet the requirements for practical electrochemical energy conversion technologies. Here a cation deficiency‐promoted phase separation strategy to design perovskite‐based composites with significantly enhanced water oxidation...
Surficial defects in semiconductor can induce high density of carriers and cause localized surface plasmon resonance which is prone to light harvesting and energy conversion, while internal defects may cause serious recombination of electrons and holes. Thus, it is significant to precisely control the distribution of defects, although there are few successful examples. Herein, an effective strategy...
TiO2 has excellent electrochemical properties but limited solar photocatalytic performance in light of its large bandgap. One important class of visible‐wavelength sensitizers of TiO2 is based on ZnFe2O4, which has shown fully a doubling in performance relative to pure TiO2. Prior efforts on this important front have relied on presynthesized nanoparticles of ZnFe2O4 adsorbed on a TiO2 support; however,...
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