Self-supported nickel phosphosulphide nanosheets for highly efficient and stable overall water splitting

Abstract

Self-supported nickel phosphosulfide (NiP0.62S0.38) nanosheets are fabricated by convenient one-step programming annealing in phosphorus and sulfur gas in series.

Graphene Defects Trap Atomic Ni Species for Hydrogen and Oxygen Evolution Reactions

“…Thus, alternative electrocatalysts with high efficiency and low cost, such as transition metal-based catalysts, are urgently needed. 1,2 Nevertheless, there is still a long way to go before their atom efficiency is improved because only atoms on the surface of the catalysts can participate in HER or OER, greatly hampering the efficiency of material utilization during industrial upscaling. 3 To expose more active sites, these catalysts are generally downsized into nanoparticles or clusters or even single atoms immobilized onto certain substrates to provide an effective way to maximize atom efficiency.…”

Electrodeposition of Cobalt Phosphosulfide Nanosheets on Carbon Fiber Paper as Efficient Electrocatalyst for Oxygen Evolution

“…Transition metal (Fe, Co, Ni) oxides, hydroxides, chalcogenides,, phosphates,, spinel, and organometallics have been widely studied as OER catalysts. The activity of electrocatalysts toward OER strongly depends on the number of active sites .…”

V4P6.98/VO(PO3)2 as an Efficient Non‐Noble Metal Catalyst for Electrochemical Hydrogen Evolution in Alkaline Electrolyte

“…[1] Electrocatalytic water splitting for hydrogen production shows great potential for developing hydrogen as a new energy source owning to its low-energy consumption and high-purity products. [6,[30][31][32][33][34] According to previous research, P atoms are electronegative and can withdraw electron density from metal atoms and act as a proton carrier in HER catalysts, leading to high catalytic activity. The oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) were two essential part of overall water-splitting process.…”

“…To our knowledge, only Fe 0.5 V 0.5 composites, CoÀ V hydr(oxy)oxide, and NiÀ V double-layered hydroxides have shown high activity as OER catalysts. [6,[30][31][32][33][34] According to previous research, P atoms are electronegative and can withdraw electron density from metal atoms and act as a proton carrier in HER catalysts, leading to high catalytic activity. [27][28][29] Recently, phosphide catalysts (such as FeP x , Ni x P y , Co x P y , MoP x , WP x , and Cu 3 P) have shown great potential for replacing noble metals in electrocatalytic water splitting for hydrogen production.…”

“…[27][28][29] Recently, phosphide catalysts (such as FeP x , Ni x P y , Co x P y , MoP x , WP x , and Cu 3 P) have shown great potential for replacing noble metals in electrocatalytic water splitting for hydrogen production. [6,[30][31][32][33][34] According to previous research, P atoms are electronegative and can withdraw electron density from metal atoms and act as a proton carrier in HER catalysts, leading to high catalytic activity. In view of these previous findings, we hypothesize that V-based phosphides could serve as effective water-splitting catalysts.Herein, to the best of our knowledge, we report a flowerlike V 4 P 6.98 /VO(PO 3 ) 2 catalyst synthesized on a nickel foam (NF) substrate as an efficient non-noble metal catalyst for electrochemical hydrogen evolution in alkaline electrolyte for the first time.…”