Nickel and nickel oxide nanoparticle-embedded functional carbon nanofibers for lithium sulfur batteries

Abstract

Lithium-sulfur (Li-S) batteries are receiving tremendous attention owing to their critical advantages such as high theoretical capacity of sulfur, cost-effectiveness, and environmentally friendliness. Commercialization of this battery technology could remarkably...

Potent Noble Metal–Nickel Oxide Interaction: A Strategy for Improved Oxygen Reduction Reaction via Engineering the Electronic Structure

“…Through the engineering of their electronic structures of noble metals as active sites, we demonstrate the uniform dispersion of noble metals, such as gold, palladium, and platinum, over nickel oxide on nickel electrodes (NM@NiO|Ni) for boosting ORR under alkaline electrolyte. 39,40 The NM@NiO|Ni electrodes are made by a galvanic replacement reaction (GRR) technique that is followed by acid etching. When nickel oxide is combined with noble metals, it can operate as a suitable and stimulating support that enhances stability and catalytic activity.…”

“…Understanding the relationship of structure–property and developing effective catalysts for ORR logically requires deciphering the ORR process at the atomic level. Through the engineering of their electronic structures of noble metals as active sites, we demonstrate the uniform dispersion of noble metals, such as gold, palladium, and platinum, over nickel oxide on nickel electrodes (NM@NiO|Ni) for boosting ORR under alkaline electrolyte. , The NM@NiO|Ni electrodes are made by a galvanic replacement reaction (GRR) technique that is followed by acid etching. When nickel oxide is combined with noble metals, it can operate as a suitable and stimulating support that enhances stability and catalytic activity. , The Pd@NiO|Ni electrode exhibits pronounced electrocatalytic ORR activity with the onset potential reduction potential, a high catalytic cathodic current density, a high mass activity, and stability.…”