Dual-strategy engineered nickel phosphide for achieving efficient hydrazine-assisted hydrogen production in seawater

Abstract

The electrocatalytic hydrogen production in seawater without freshwater shortage pressure is promising, but hindered by tardy oxygen evolution reaction and detrimental chloride electrochemistry. Herein, dual-strategy of Fe-doping and CeO2-decorating into...

A hierarchical CoSx/Ni(OH)2 heterostructure as a bifunctional electrocatalyst for urea-assisted energy-efficient hydrogen production

“…6,7 In general, water electrolysis consists of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER); both reactions must overcome a reaction energy barrier, especially the anodic OER, which involves four proton-coupled electron transfers and dominates the overall efficiency of water electrolysis. [8][9][10][11] Therefore, it is urgent to substitute a thermodynamically favorable anode reaction for the OER. The urea oxidation reaction (UOR), which has a small thermodynamical potential, is a promising process and has attracted wide attention in replacing the OER and purifying urea-rich wastewater.…”