Heterointerface enhanced NiFe LDH/V–Co₄N electrocatalysts for the oxygen evolution reaction

Abstract

The development of high-performance and low-cost electrocatalysts for oxygen evolution reaction (OER) is of great importance for renewable energy technologies. Herein, a highly efficient and stable self-supported electrocatalyst with V-Co4N...

Tunable Pt–Ni Interaction Induced Construction of Disparate Atomically Dispersed Pt Sites for Acidic Hydrogen Evolution

“…The peaks centered at 44.5, 51.8, and 76.4° correspond to the (111), (200), and (220) planes of the Ni phase . Notably, no Pt characteristic peaks can be detected in both the Pt 0.04 /Ni-DA and Ni-DA-Pt composites because the excessively high-intensity peaks of the Ni nanoparticles may obscure the relatively weak peaks of Pt nanoparticles. , To get a better understanding of the existing form of Pt in Pt 0.04 /Ni-DA and Ni-DA-Pt, the majority of Ni nanoparticles were etched by hydrochloric acid after the first pyrolysis process and labeled as Pt 0.04 /Ni­(H)-DA and Ni­(H)-DA-Pt, respectively. After etching, the characteristic peaks of pure Pt and Ni are still absent in the Pt 0.04 /Ni­(H)-DA composite, while a peak located at 43.4° between the characteristic peaks of pure Pt and Ni can be observed.…”

Corrosive engineering assistedin situconstruction of an Fe–Ni-based compound for industrial overall water-splitting under large-current density in alkaline freshwater and seawater media

“…Hydrogen (H 2 ) plays a signicant role in future energy systems due to its pollution-free characteristic and high energy density. [1][2][3][4] Electrolysis of water actuated by renewable energies, such as photovoltaic power, wind power, and hydropower, is an efficient and sustainable approach to generate hydrogen. [5][6][7] In the past few decades, various materials for water electrocatalysis have been developed, and Pt-based and RuO 2 catalysts have been identied as advanced catalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively.…”

Constructing Fe/Ni atomic interfaces in Fe-doped Ni(OH)2with single-phase structures for efficient oxygen evolution

“…Hydrogen, marked by high energy density and environmental friendliness and produced via water splitting has attracted intensive attention. 1,2 However, hydrogen production efficiency is severely restricted by oxygen evolution reaction (OER) owing to their sluggish kinetics and larger overpotential resulting from complicated multistep-proton-coupled-electron transfer. 3,4 Although Ir/Ru-based oxide catalysts exhibit outstanding catalytic activity, their scarcity and high cost severely impede their large-scale applications.…”