The controlled synthesis of nitrogen and iron co-doped Ni₃S₂@NiP₂ heterostructures for the oxygen evolution reaction and urea oxidation reaction

Abstract

At present, global resources are nearly exhausted and environmental pollution is becoming more and more serious, so it is urgent to develop efficient catalysts for hydrogen production. Herein, the nitrogen...

Co, Mn co-doped Fe9S11@Ni9S8 supported on nickel foam as a high efficiency electrocatalyst for the oxygen evolution reaction and urea oxidation reaction

“…21–25 Therefore, it is important to develop non-noble metal based electrocatalysts with excellent catalytic activity. 26…”

“…[21][22][23][24][25] Therefore, it is important to develop non-noble metal based electrocatalysts with excellent catalytic activity. 26 In recent years, a large number of cheap nickel-based catalysts have been studied and have been well applied to the OER and UOR. [27][28][29] Among them, nickel-based sulfide is considered to be one of the promising electrocatalysts for water splitting due to the high electronegativity of element S. Introducing the S element can improve the electron transfer efficiency, promote electron migration from the cation to S and improve the kinetics.…”

“…[48][49][50] Compared with single doping, codoping can further adjust the electronic structure of the catalyst through a synergistic effect between metals and can greatly increase the active center. 51 Our group 26 greatly improved the water oxidation activity and urea oxidation activity of the Ni 3 S 2 @NiP 2 material through an anion and cation co-doping strategy. However, despite great efforts, there are still many challenges to overcome.…”

Ni2Se3−CuSex Heterostructure as a Highly Efficient Bifunctional Electrocatalyst for Urea‐Assisted Hydrogen Generation

“…[11,12] In recent years, nickel (Ni)-based materials, such as alloys, oxides, phosphides, sulfides, hydroxides, and selenides, have been demonstrated as an alternative catalyst with impressive catalytic performance for UOR. [13][14][15][16][17][18] Among them, nickel selenides with unique electron configuration and high conductivity, exhibit great application prospects as a bifunctional electrocatalyst for electrocatalysis. [19][20][21] However, further practical applications for hydrogen production are still affected by its less exposed catalytic active sites and weak structural stability.…”

“…Noble metal‐based catalysts are proved to have superior catalytic activity for both hydrogen evolution reaction (HER) and UOR; however, their large‐scale applications are greatly limited by the high cost and low reserves [11,12] . In recent years, nickel (Ni)‐based materials, such as alloys, oxides, phosphides, sulfides, hydroxides, and selenides, have been demonstrated as an alternative catalyst with impressive catalytic performance for UOR [13–18] . Among them, nickel selenides with unique electron configuration and high conductivity, exhibit great application prospects as a bifunctional electrocatalyst for electrocatalysis [19–21] .…”