The potentiodynamic behaviour of nickel in potassium hydroxide solutions

Spectroscopic And Electrochemical Studies Of Electrochromic Hydrated Nickel Oxide Films

“…Also, an oxygen-evolution peak occurs at about 550 m V (SCE). Similar results have been noted by other investigators (18)(19)(20). The oxidation reaction taking place at the anodic peak has been identified as Ni(OH)2 -+ NiOOH + H+ + e-.…”

Electrochemical response of co-precipitated and layer-by-layer precipitated hydrous nickel hydroxide and hydrous cobalt hydroxide on platinum in alkaline solutions

“…The splitting of the cathodic current peak is The first profile and those obtained with different durations of the potential cycling are shown. In case (a) current peaks arc numbered according to the description already given in previous publications [11,13,35]. initially in the order of 20 mV and increases up to about 40 mV as r, the duration of the intermediate RTPS, increases, while that of the anodic current peak is about 40 mV.…”

Electrooxidation of methanol and ethanol on carbon electrodeposited Ni–MgO nanocomposite

“…Although adding MgO enhanced the anti-poisoning stability of the Ni catalyst, the reac-tion mechanism did not change. In general, the decrease in the current density of methanol or ethanol oxidation at Ni-based electrodes with time has been attributed to a loss in activity of the nickel oxide [48,49]. The passive oxide γ-NiOOH may be formed under long polarization, blocking some of the electrode activity owing to its poor conducting behavior.…”