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- W4293234844 abstract "High current density hydrogen evolution reaction (HER) in alkaline water electrolysis plays crucial role in renewable and sustainable energy systems, while posing a great challenge to the highly-efficient electrocatalysts. Here, the synthesis of Ni/NiO@MoO3−x composite nanoarrays is reported by a moderate reduction strategy, combining Ni/NiO nanoparticles (≈20 nm) with amorphous MoO3−x nanoarrays. The Ni/NiO@MoO3−x composite nanoarrays possess enhanced hydrophilicity, optimize reaction energy barriers, accelerate reactant diffusion/bubble detachment, and therefore display an ultrahigh alkaline HER activity with a low η10 overpotential of 7 mV as well as Tafel slope of 34 mV dec−1. More significantly, the Ni/NiO@MoO3−x nanoarrays only demand low overpotentials of 75 and 112 mV to deliver 100 and 200 mA cm−2 hydrogen production current, and can steadily work at 100 mA cm−2 for 40 h, which is more efficient and stable than the Pt/C catalyst." @default.
- W4293234844 created "2022-08-27" @default.
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- W4293234844 date "2022-04-22" @default.
- W4293234844 modified "2023-10-16" @default.
- W4293234844 title "Synthesis of Ni/NiO@MoO <sub>3−</sub> <i> <sub>x</sub> </i> Composite Nanoarrays for High Current Density Hydrogen Evolution Reaction" @default.
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- W4293234844 doi "https://doi.org/10.1002/aenm.202200001" @default.
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