Hierarchically porous Ni foam-supported Co and Sn doped Ni₃S₂ nanosheets for oxygen evolution reaction electrocatalysts

Abstract

Electronic structure modification of Ni3S2 with Co and Sn co-doping boosts OER property.

An efficient Ni3S2–Ni electrode constructed by a one-step powder metallurgy approach for the hydrogen evolution reaction

“…The binding energies at 852.5 and 869.9 eV correspond to the Ni 0 of Ni 2p 3/2 and Ni 2p 1/2 , respectively. 35–37 The Ni 0 peak disappears at a high sintering temperature of 700 °C. Two peaks at 861 and 879.6 eV are satellite peaks.…”

A phase and interface co-engineered MoPxSy@NiFePxSy@NPS-C hierarchical heterostructure for sustainable oxygen evolution reaction

“…Unfortunately, their scarcity, high cost, and still large overpotentials (generally over 300 mV) limit their widespread use. 5,6 Therefore, the development of high-performance, low-cost, and robust OER alternatives remains imminent. In recent years, multivariate transition-metal phosphides and suldes have garnered considerable research interest due to their unique electronic structures and potential electrocatalytic activity.…”

Amorphous/Crystalline Nanostructured WP/CoP-FeP4/NF Heterojunctions for Efficient Electrocatalytic Overall Water Splitting

“…Nonprecious metals present an exciting prospect as superior alternatives to precious metal catalysts due to their lower cost and potential catalytic activity. , Transition metal-based electrocatalysts possess abundant unpaired d-orbital electrons, which endow them with highly desirable catalytic potential and make them excellent catalysts for the electrochemical process of water splitting to produce hydrogen. , The catalytic performance of transition metal-based catalysts can be enhanced in various ways to approach or even surpass that of precious metal catalysts. , Consequently, low-cost alternatives can replace precious metal catalysts across all aspects, enabling large-scale production of hydrogen from electrolytic water. Researchers have endeavored to enhance the catalytic activity of transition metal-based electrocatalysts through various approaches, including composite materials, heteroatom doping, morphological modifications, , and the design of heterostructure. , Among these, the electronic structure of the catalyst can be effectively modulated by combining multiple transition metal elements, which enhances catalytic efficiency through synergistic effects. , Additionally, metal phosphides have been demonstrated to be ideal electrocatalysts for the HER . The low-temperature phosphating process can generate a significant number of amorphous structures, leading to the formation of heterostructures consisting of both crystalline and amorphous states .…”

“…24,25 Among these, the electronic structure of the catalyst can be effectively modulated by combining multiple transition metal elements, which enhances catalytic efficiency through synergistic effects. 26,27 Additionally, metal phosphides have been demon- strated to be ideal electrocatalysts for the HER. 28 The lowtemperature phosphating process can generate a significant number of amorphous structures, leading to the formation of heterostructures consisting of both crystalline and amorphous states.…”