Hydrogen production by traditional and novel alkaline water electrolysis on nickel or iron based electrocatalysts

Abstract

Hydrogen production through alkaline water electrolysis holds great promise as a scalable solution for renewable energy storage and conversion. The development of non-precious metal-based electrocatalysts with low-overpotential for alkaline water...

Honeycomb-like hollow carbon loaded with ruthenium nanoparticles as high-performance HER electrocatalysts

“…On the one hand, the amount of platinum was reduced by modifying the structure of the catalyst to obtain catalysts with better performance, such as core–shell structures, nanostructures, and alloy catalysts. 13,14 On the other hand, catalyst support materials were modified to prepare high-performance catalysts with highly dispersed active components, such as using new supports such as carbon nanotubes, carbon nanofibers, and graphene. 15,16 Dispersing catalysts on the surface of support materials can yield excellent catalytic materials, and this method has been widely used.…”

An enhanced electrocatalytic oxygen evolution reaction by the photothermal effect and its induced micro-electric field

“…Among them, Ni–Fe-based hydroxide catalysts have exhibited excellent OER activity in alkaline electrolytes due to the bimetallic synergistic effect of Ni and Fe as well as the optimized electronic structures resulting from the rearrangement of the metal atoms. 21–23 However, the OER performance of Ni–Fe-based hydroxide is strongly limited by the active sites at the edges and weak conductivity. 24,25 In addition, a proper ratio of Ni 2+ /Ni 3+ is crucial for improving the OER properties of Ni–Fe based hydroxide electrocatalysts.…”

Orange-peel derived carbon-loaded low content ruthenium nanoparticles as ultra-high performance alkaline water HER electrocatalysts

“…11–13 In recent years, people have done a lot of work on non-noble metal catalysts, and many new and efficient electrocatalysts have also been successfully developed, such as transition metal oxides, transition metal sulfides, transition metal carbides, and carbon-doped materials. 14–18 The discovery and research of carbon materials have opened up new ways and new directions to replace noble metal catalysts. 19,20 For example, graphene has attracted extensive attention due to its large specific surface area, high conductivity, good chemical stability, and structure and surface modifiability.…”