Reactive template-engaged synthesis of Ni-doped Co₃S₄ hollow and porous nanospheres with optimal electronic modulation toward high-efficiency electrochemical oxygen evolution

Abstract

Exploring economical, high-efficiency and durable electrocatalysts toward oxygen evolution reaction (OER) is of critical importance for the advancement of sustainable energy conversion technologies, including water electrolysis and metal-air batteries. Compositional...

Fe doping and interface engineering-induced dual electronic regulation of CoSe2/Co9S8 nanorod arrays for enhanced electrochemical oxygen evolution

“…[8][9][10] As a consequence, high-powered electrocatalysts are indispensable for conquering the sluggish kinetics and ameliorating the reaction rate. 11,12 Currently, commercial RuO 2 /IrO 2 catalysts are generally recognized as OER benchmark electrocatalysts, but their expensive price and scarce reserves extremely confine their extensive application. 13,14 Therefore, it is of great concern to consider more economical and effective non-precious metal catalysts as substitutes for the electro-catalysis of the OER.…”

S/N codoped carbon nanotubes as an efficient ORR electrocatalyst for zinc–air batteries

“…Therefore, it is of great practical significance to develop efficient, cheap and stable electrocatalysts to replace traditional noble metal catalysts. 9–13…”

“…Therefore, it is of great practical signicance to develop efficient, cheap and stable electrocatalysts to replace traditional noble metal catalysts. [9][10][11][12][13] In recent years, researchers have done a lot of work on nonprecious metals and non-metallic electrocatalysts, and many new and efficient electrocatalysts have also been successfully developed, including transition metal oxides, transition metal suldes, transition metal nitrides, non-metallic doped carbon materials, etc. [14][15][16][17][18][19][20][21] The discovery and research of non-metallic electrocatalysts have opened up a new way and direction to replace noble metal electrocatalysts.…”

Effect of Iron and Vanadium Doping on Structural Phase Transition in Cobalt Diselenide Enabling Superior Oxygen/Hydrogen Electrocatalysis

“…A synergetic effect of codoping Fe and V at optimum levels over catalytic materials can boost the OER performances of electrocatalytic materials in alkaline conditions. Notably, a number of catalysts have been developed in this manner, such as Ni–Co 2 Se 4 , V–Ni 3 Se 2 /NF, Ni–Co 3 S 4 ,, Mn-CoSe 2 /CFC, Fe,Co/CoSe 2 , etc. It may be beneficial to study the structural changes of cobalt selenides as well as their electrocatalytic performance to develop highly efficient catalysts for the HER.…”

“…Along with the demand to substitute endangered elements, the development of innovative non-precious-metal electrocatalysts incorporating multifunctional electrocatalytic operations into one catalyst entity will lead to a dramatic simplification of the manufacturing processes, as well as significantly decrease manufacturing costs. , For OER and HER, transition-metal-based catalysts have been extensively studied owing to their abundance and are considered promising alternatives. ,, There has been considerable interest in cobalt-based bimetal oxides and selenides due to their remarkable OER properties in alkaline media, especially mesoporous nanostructures. − ,− In particular, cobalt selenides offer a unique approach to structural transformation engineering that makes them suitable candidates. Specifically, stoichiometric CoSe 2 , with its t 2g 6 e g 1 structure, ,, is considered to be an appropriate electrode material for oxygen and hydrogen electrocatalysis, ,, and its performance has been experimentally demonstrated.…”