NiFeCu phosphides with surface reconstruction via the topotactic transformation of layered double hydroxides for overall water splitting

Abstract

Regulating the crystal plane exposure of catalysts is an effective way for enhancing their oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activities. Herein, we synthesize ultrathin metal phosphide...

Ethanol combustion-assisted fast synthesis of tri-metal oxides with reduced graphene oxide for superior overall water splitting performance

“…10,11 For example, hydrothermal treatment is a common liquid-phase method to synthesize BMEs, wherein the reaction time usually needs several hours or more in an autoclave reactor, and follow-up separation and washing. Calcination treatment is also widely used to prepare BMEs in bulk production, 12 but this process needs temperatures of hundreds of degrees Celsius to accelerate the diffusion reaction by electrical heating in a muffle furnace or a tube furnace. Therefore, it is still of great significance to develop facile and cost-effective strategies for synthesizing multicomponent compounds under high-temperature, short-duration, and simplestep conditions.…”

Reasonable regulation of flexible sulfur-based bifunctional catalytic electrodes for efficient seawater splitting

“…[17][18][19] Transition metal chalcogenides, especially sulfides, have a strong redox ability, and their low electronegativity and excellent electrocatalytic performance make them some of the most desirable catalytic materials. 20,21 However, the low conductivity of transition metal sulfides and their long-term durability have hindered their widespread application in alkaline electrolytes. 22,23 Therefore, by designing transition metal sulfides of different shapes on a suitable substrate, the formed three-dimensional nanostructures are directly grown on this substrate to obtain a large surface area with abundant active sites, which provide an effective channel for electron transfer, thus improving the catalytic efficiency of the HER, OER and OWS.…”

An interface-engineered Co2P/CoMoP2 heterojunction with greatly improved electrocatalytic activity in water/seawater splitting

“…4,5 However, during the water-splitting process, high energy barriers and slow kinetics are challenges in the two half-reactions: the HER and OER. 6,7 Currently, precious metal Pt and Ir-based catalysts serve as optimal solutions to address the sluggish electrode reactions, while their scarcity and high prices impede the further scalability of water electrolysis. Consequently, developing highly active and low-cost non-precious metal-based catalysts becomes a viable solution to tackle these issues.…”