Cost-effective and efficient water and urea oxidation catalysis using nickel-iron oxyhydroxide nanosheets synthesized by an ultrafast method

Strategies for designing more efficient electrocatalysts towards the urea oxidation reaction

“…Therefore, compared to acidic or neutral UOR, alkaline UOR is more promising. For alkaline UOR, owing to the intrinsic higher activities, Ni-based catalysts (Ni-containing metals, 80–84 oxides, 85–90 hydroxides, 91–97 sulfides, 98–102 phosphides, 103–105 selenides, 106–108 nitrides, 109–113 etc. ) have been more widely investigated among all transition metal-based catalysts.…”

Ni(OH)2 Coated CoMn-layered double hydroxide nanowires as efficient water oxidation electrocatalysts

“…One peak centered at 531.0 eV corresponded to oxygen bonding with metals such as Co, and Mn, while the other peak, centered at 532.2 eV was ascribed to physisorbed and chemisorbed water at or near the surface of the samples thus obtained. 32,51 Overall, the aforementioned results indicate the successful fabrication of Ni(OH) 2 @ CoMn-LDH nanowires.…”

“…The involved OER process of Ni(OH) 2 @CoMn-LDH in an alkaline medium occurs in the following steps. 32,55 (i Where M stands for Ni 2+ /Co 2+ /Mn 3+ in the electrode. As a result, redox couples (Ni 2+ /Ni 3+ , Co 2+ /Co 3+ , and Mn 3+ /Mn 4+ ) are involved in a cyclic process.…”

“…Where C dl is the double-layer capacitance, which is the slope of the linear relationship between the double layer charging current and the scanning rate of the CV curves; C s is the specific capacitance (C s = 0.04 mF cm À2 in a 1 M KOH electrolyte). 32 The specific activity (SA) is commonly represented in mA cm À2 and calculated as follows: 33…”

Facile electrodeposited NiMoSe nanospheres for hydrogen evolution reaction

“…Electrolysis can be used to extract H 2 from water, resulting in a cleaner manner of manufacturing. Water splitting is made up of two half-reactions: the HER and the oxygen evolution reaction (OER) [3,4]. While HER is a relatively easy process, OER has sluggish kinetics.…”