Electronic structure modulation of CoSe2 nanowire arrays by tin doping toward efficient hydrogen evolution

A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation

“…Although the HER catalytic performance of 0.1-CoSe 2 /NF is lower than that of Pt/C/NF, it is still superior to that of most reported CoSe 2 -based electrocatalysts, as summarized in Table 1. 38–47…”

“…Although the HER catalytic performance of 0.1-CoSe 2 /NF is lower than that of Pt/C/NF, it is still superior to that of most reported CoSe 2 -based electrocatalysts, as summarized in Table 1. [38][39][40][41][42][43][44][45][46][47] Putting together, the more favorable thermodynamics and faster kinetics of 0.1-CoSe 2 /NF than those of Co(OH) 2 /NF are attributed to the following factors. First, 0.1-CoSe 2 has high electrical conductivity 24,26 and the Se sites in the structure act as the active sites according to the previous theoretical studies on CoSe 2 , 48,49 and the negative charge of Se in CoSe 2 can readily attract protons with an appropriate strength to facilitate the desorption process, 25,29 thereby improving the efficiency of the HER.…”

Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

“…HER efficiency experienced a real boost from work that was published very recently. 1179,[1184][1185][1186][1187][1188][1189] Phosphorisation of NiSe 2 nanoplate arrays delivered a selfsupported electrocatalyst comprising a nickel chalcogenide (NiSe 2 ) and a nickel pnictide (Ni 2 P) phase 1188 (Fig. 81) and turned out to highly efficiently and stably support HER electrocatalysis in 1 M KOH (Z = 66 mV; j = 10 mA cm À2 ).…”

Controllable Synthesis of a Loofah-Like Cobalt–Nickel Selenide Network as an Efficient Electrocatalyst for the Hydrogen Evolution Reaction

“…Hydrogen (H 2 ) is one of the most promising clean and renewable energy sources to replace fossil fuels and alleviate environmental pollution because of its high gravimetric energy density, efficient availability, and zero-carbon feature. , Water splitting employing an electrocatalyst is an appealing and efficient route for H 2 generation, which has been the focus of much attention in recent years. − To date, the state-of-the-art electrocatalyst for the hydrogen evolution reaction (HER) is carbon-based platinum (Pt/C), which can minimize the activation energy of H 2 formation on its surface and achieve large current densities at low overpotentials. − Despite the most-efficient electrocatalytic activity, the high cost and scarcity of noble metal Pt severely restrict its large-scale utilization in commercial electrolyzers. , Therefore, it is both significant and imperative to explore cost-efficient and earth-abundant HER catalysts.…”