Coupled MoO_3−x@CoP heterostructure as a pH-universal electrode for hydrogen generation at a high current density

Abstract

Developing highly-performance and low-cost self-supporting electrodes as pH-universal electrocatalysts for hydrogen evolution reaction (HER) and realizing high-quality hydrogen production at large current density is highly desirable, but it still remains...

Recent advances and strategies of electrocatalysts for large current density industrial hydrogen evolution reaction

“…Chen et al created a self-supporting electrode MoO 3−x @CoP/NF, comprising oxygen-deficient molybdenum oxide (MoO 3−x ) and cobalt phosphide (CoP) on nickel foam (NF). 102 It is a highly active pH-universal HER electrocatalyst at high current densities. The coupled hierarchical heterostructure of the catalyst is constructed via simple electrodeposition followed by sulfurization.…”

Sulfur Substitution and Defect Engineering in an Unfavored MnMoO4 Catalyst for Efficient Hydrogen Evolution under Visible Light

“…Solar energy is a renewable and clean energy source that has gained attention as an alternative to fossil fuels. , Researchers have been exploring ways to efficiently use solar energy for photocatalytic hydrogen evolution. − The activation of solar-to-hydrogen conversion with high efficiency requires appropriate defects in the photocatalyst. − Defects with trapped defect energy levels are capable of improving semiconductor light absorption. Point defects, such as sulfur vacancy, nitrogen vacancy, and V O , are simple 0D crystal defects that have been extensively studied in the field of photocatalysis. − V O can be generated in various metal oxides, including TiO 2 , ZnO, and WO 3 , − for photocatalytic water decomposition. V O can also be found in oxygen-containing compounds.…”

Sulfur-Modified Nickel-Based Hybrid Nanosheet as a Robust Bifunctional Electrode for Hydrogen Generation via Formaldehyde Reforming

“…The continuous consumption of fossil energy has led to serious environmental pollution and energy crisis. Clean hydrogen energy has received widespread attention as a fuel with high energy density and environmental friendliness. − Electrocatalytic water splitting technology has been proven to be one of the important ways to obtain large-scale hydrogen fuel. − However, the sluggish kinetics of anodic oxygen evolution reaction (OER) severely hindered its overall energy efficiency. − Thus, exploiting other anodic oxidation half-reactions with energy-saving advantage is urgently required to improve the energy conversion efficiency of water electrolysis. At present, a number of electrocatalytic oxidation reactions, such as electrocatalysis of formaldehyde, urea, toluene, hydrazine, and 5-hydroxymethylfurfural, have been widely designed and are proved to be promising alternatives for OER. − Among them, the electrocatalytic oxidation of formaldehyde is considered as one of the feasible strategies to assist the hydrogen production benefiting from its potential advantage. − However, how to develop highly active, low-cost, and stable electrode materials to promote the practical application of this coupled catalytic system is ideal.…”