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Matching the thickness of the graphitic carbon nitride (CN) nanolayer with the charge diffusion length is expected to compensate for the poor intrinsic conductivity and charge recombination in CN for photoelectrochemical cells (PEC). Herein, the compact CN nanolayer with tunable thickness is in situ coated on carbon fibers. The compact packing along with good contact with the substrate improves the...
Constructing 3D nanophotonic structures is regarded as an effective method to realize efficient solar‐to‐hydrogen conversion. These photonic structures can enhance the absorbance of photoelectrodes by the light trapping effect, promote the charge separation by designable charge transport pathway and provide a high specific surface area for catalytic reaction. However, most 3D structures reported so...
The construction of nanostructured Z‐scheme heterostructure is a powerful strategy for realizing high‐performance photoelectrochemical (PEC) devices such as self‐powered photodetectors and water splitting. Considering the band structure and internal electric field direction, BiVO4 is a promising candidate to construct SnS2‐based heterostructure. Herein, the direct Z‐scheme heterostructure of vertically...
Sluggish oxygen evolution reactions on photoanode surfaces severely limit the application of photoelectrochemical (PEC) water splitting. The loading of cocatalysts on photoanodes has been recognized as the simplest and most efficient optimization scheme, which can reduce the surface barrier, provide more active sites, and accelerate the surface catalytic reaction kinetics. Nevertheless, the introduction...
The slow charge transfer and high energy barrier are the key restrictions of cost‐effective electrocatalysts for hydrogen production. A hierarchical heterostructure of MoN@NiFe‐layered double hydroxides (LDH) is developed, with NiFe‐LDH nanosheets supported on MoN nanowire arrays. The as‐prepared MoN@NiFe‐LDH exhibits a remarkably high performance on hydrogen production in alkaline medium, which is...
Electrochemical activation strategy is very effective to improve the intrinsic catalytic activity of metal phosphate toward the sluggish oxygen evolution reaction (OER) for water electrolysis. However, it is still challenging to operando trace the activated reconstruction and corresponding electrocatalytic dynamic mechanisms. Herein, a constant voltage activation strategy is adopted to in situ activate...
Metallopolymers combine the property features of both metallic compounds and organic polymers, representing a typical direction for the design of high‐performance hybrid materials. Here, a highly adaptive etching method to create pores and cavities in the metallopolymer particles is established. Starting from boronate polymer (BP) and inorganic@BP core–shell particles, porous, hollow, and yolk–shell...
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...
Developing high‐efficiency electrocatalysts toward overall water splitting is an increasingly important area for sustainable energy evolution. Theoretical calculation results demonstrate that the incorporation of Ru optimizes the Gibbs free energy of adsorption of H2O molecules and intermediates for the hydrogen/oxygen evolution reactions (HER/OER) on metal selenide sites, thus boosting electrocatalytic...
Cobalt phosphides electrocatalysts have great potential for water splitting, but the unclear active sides hinder the further development of cobalt phosphides. Wherein, three different cobalt phosphides with the same hollow structure morphology (CoP‐HS, CoP2‐HS, CoP3‐HS) based on the same sacrificial template of ZIF‐67 are prepared. Surprisingly, these cobalt phosphides exhibit similar OER performances...
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...
Water electrolysis, which is a promising high‐purity H2 production method, lacks pH‐universality; moreover, highly efficient electrocatalysts that accelerate the sluggish anodic oxygen evolution reaction (OER) are scarce. Geometric structure engineering and electronic structure modulation can be efficiently used to improve catalyst activity. Herein, a facile Ar plasma treatment method to fabricate...
Developing robust and highly efficient electrocatalysts for oxygen evolution reaction (OER) is critical for renewable, secure, and emission‐free energy technologies. Perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) has emerged as a promising OER electrocatalyst with desirable intrinsic activity. Inspired by the factor that substituting in transition‐metal sublattice of the perovskite can further optimize...
In article number 2004843, Guangliang Chen, Jun Huang, Changsheng Song, and co‐workers demonstrate that Mulberry‐like Ni12P5‐Ni4Nb5P4 nanocrystals with rich heterointerfaces and phase edges are successfully fabricated on carbon cloth, which is enabled by intentional defect creation by atmospheric pressure dielectric barrier discharge plasma (PCC). The obtained Ni12P5‐Ni4Nb5P4/PCC electrocatalyst maintains...
Bimetallic phosphate electrocatalysts on carbon‐cloth support are among the most promising industry‐relevant solutions for electrocatalytic hydrogen production. To address the persistent issue of hetero‐phase interfacing on carbon support while ensuring high activity and stability, a low‐cost, high‐performance hydrogen evolution reaction (HER) electrocatalyst is developed. Bi‐phase Ni12P5‐Ni4Nb5P4...
Portable water splitting devices driven by rechargeable metal–air batteries or solar cells are promising, however, their scalable usages are still hindered by lack of suitable multifunctional electrocatalysts. Here, a highly efficient multifunctional electrocatalyst is demonstrated, i.e., 2D nanosheet array of Mo‐doped NiCo2O4/Co5.47N heterostructure deposited on nickel foam (Mo‐NiCo2O4/Co5.47N/NF)...
Developing highly active electrocatalysts with superior durability for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in the same electrolyte is a grand challenge to realize the practical application of electrolysis water for producing hydrogen. In this work, an ultrasmall Ru/Cu‐doped RuO2 complex embedded in an amorphous carbon skeleton is synthesized, through thermolysis...
Catalysts screening and structural optimization are both essential for pursuing a high‐efficient water electrolysis system (WES) with reduced energy supply. This study demonstrates an advanced WES with double superaerophobic electrodes, which are achieved by constructing a nanostructured NiMo alloy and NiFe layered double hydroxide (NiFe‐LDH) films for hydrogen evolution and oxygen evolution reactions,...
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