Interface Synergistic Effect of NiFe-LDH/3D GA Composites on Efficient Electrocatalytic Water Oxidation.

Currently, NiFe-LDH exhibits an excellent oxygen evolution reaction (OER) due to the interaction of the two metal elements on the layered double hydroxide (LDH) platform. However, such interaction is still insufficient to compensate for its poor electrical conductivity, limited number of active sites and sluggish dynamics. Herein, a feasible two-step hydrothermal strategy that involves coupling low-conductivity NiFe-LDH with 3D porous graphene aerogel (GA) is proposed.

Coupling Dual-phased nickel selenides with N-doped carbon enables efficient urea electrocatalytic oxidation.

Electrochemical urea oxidation reaction (UOR) is urgently in demand for diverse energy conversion and storage device coupled with pollution treatment because of its favorable thermodynamic potential (0.37 V vs RHE) and wide distribution nature of urea, but simultaneously gravely limited by the sluggish reaction dynamics and poisoning of catalyst. Herein, dual-phased NiSe/NiSe coupling with N doped carbon (NiSe/NiSe@NC-2) in situ is prepared by a solvothermal-selenization pathway.

Phase and crystallinity regulations of Ni(OH) by vanadium doping boost electrocatalytic urea oxidation reaction.

Direct urea fuel cell (DUFC) and overall urea splitting system have attracted considerable attention as promising choice for energy conversion. Whereas, the anodic half reaction of electrocatalytic urea oxidation reaction (UOR) in these systems awfully limited their practical application due to the complex 6-electron transfer process. Herein, vanadium doped nickel (V-Ni(OH)) with highly efficient electrocatalytic activity toward UOR was developed by a simple coprecipitation method.

F-decoration-induced partially amorphization of nickel iron layered double hydroxides for high efficiency urea oxidation reaction.

The urea oxidation reaction (UOR) has been well-acknowledged as one of the promising alternatives for hydrogen production through electrochemical water splitting system because of the more favorable thermodynamic potential. But the shortage of cost-effective electrocatalysts with high catalytic activity and durability restricts its practical development. Herein, the partially amorphous fluorine-decorated nickel iron layered double hydroxides (NiFe-F) is constructed via a low-temperature fluoridation method.

Superhydrophilic nickel cyclotetraphosphate for the hydrogen evolution reaction in acidic solution.

Nickel cyclotetraphosphate grown on carbon cloth (NiPO/CC) is synthesized an anion exchange reaction method and it shows excellent hydrogen evolution reaction (HER) activity and strong working stability in acid due to the merits of its unique polymer-like structure, mesoporous characteristics, and superhydrophilic surface.