Multifunctional metal-phosphide-based electrocatalysts for highly efficient solar hydrogen production integrated devices

Abstract

Uninterruptible H2 production from water electrolysis powered by sustainable sunlight is critical for the development of hydrogen economy. The key to realize this purpose is to construct integrated devices containing...

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

“…Heteroatom-doped carbon materials such as FeNiP/ carbon, [115] N, Co-codoped carbon nanotube films, [116] and Cu, N, S-codoped defect-rich carbon [14] have been reported to act as trifunctional electrocatalysts. These carbons often feature rich defects, large specific surface area, and abundant active sites, exhibiting excellent and stable trifuctional electrocatalytic activity.…”

“…Hence, there is no direct relationship between the band levels of photoelectrodes and the water redox potentials. In PEC-PV tandem cells, the front metal oxide electrode generally absorbs the short-wavelength incident light and the rear small band gap solar cell utilizes the long-wavelength light transmitted from the front photoelectrode, which can extend the light absorption Zn-air battery (-Zn‖Co-NC@CC+) 1 m KOH Co-NC@CC 1.57 >24 h [114] Zn-air battery (-Zn‖NiFeP+) 1 m KOH NiFeP E j = 20 mA cm−2 = 1.9 V 120 min [115] Zn-air battery (-Zn‖ Fe-Co 2 P@Fe-N-C+) 1 m KOH Fe-Co 2 P@Fe-N-C 1.58 900 min [121] NiZn battery (-Zn‖Zn-Ni-Co@Ni(OH) 2 / NF+)…”

High-entropy alloys in electrocatalysis: from fundamentals to applications

“…192,193 Although HEAs typically exhibit high activity without a substrate, their activity can be further enhanced by dispersing them on a substrate, leading to improved metal-support interaction (MSI). 194 The choice of support material is crucial in optimizing the interaction with the HEA. Different support materials, such as metal oxides, carbon-based materials, and conductive polymers, exhibit distinct properties and can impart specific functionalities to the catalytic system.…”

Self-Powered Hydrogen Production with Improved Energy Efficiency via Polysulfides Redox

“…25 Aqueous zinc-air batteries powered water electrolyzers have been widely reported in recent years, 26,27 since the zinc-air batteries have exhibited the capacity to store solar energy in a daylight reaction and release chemistry energy into electricity in a discharge process to drive water splitting, so that the intermittent solar energy is fully utilized for uninterrupted H 2 production. 28,29 However, the efficacy of this approach is hindered by the sluggish kinetics of the OER during the charging process, which escalates the overall energy demand. A direct hydrazine fuel cell powered water electrolyzer is another commonly reported self-powered system for H 2 production.…”