Room-temerature oxidation of Ni(110) at low and atmospheric oxygen pressures

The electronic structure of the α–Ni(OH)2 films: Influence on the production of the high–performance Ni–catalyst surface

“…1, where the oxidative ejection of Ni(III) from the barrier layer is possible and where oxygen evolution reaction (o.e.r) also occurs [25,30,31]. In the backward potential scan, the cathodic current peak C 0 at 0.8 V corresponds to reduction of NiOOH to beNi(OH) 2 [29,34,35].…”

“…1 shows series of cyclic voltammograms (CVs) recorded with a polycrystalline nickel electrode for the successive increase of the sweep-reversal anodic potential limits, E al , from 0.6 to 1.2 V. In the potential region of Ni(II) oxidation state, the anodic current peak A at À0.3 V marks transition to passivity. It is accepted that this peak corresponds to the NijaeNi(OH) 2 transition followed by the transformation to the beNi(OH) 2 passive film at more noble potentials [10e13, 15,29,30].…”

In situ studies of the oxidation of nickel electrodes in alkaline solution

“…The second reaction region is NiO nucleation and lateral growth leading to coalescence and the formation of a NiO layer $2 atomic layers thick. The third reaction is the thickening of the oxide with time [11,[13][14][15][16]. The thickness of the final oxide layer is reported to be between 2 and 4 atomic layers of NiO.…”

“…Ni substrates in UHV have been subjected to oxygen, water and air at a range of pressures and exposures in order to investigate growth processes [10][11][12][13][14][15][16][17][18][19]. Thicker oxides have also been grown using prolonged oxygen exposure and high temperatures [12,19,20].…”

Guided selective deposition of nanoparticles by tuning of the surface potential

“…It is known that Si forms a natural oxide SiO 2 [23] and Al forms Al 2 O 3 [24]. The other metals, except for Au which is a noble metal, can form several types of oxides [25][26][27]. Multi-crystalline metal films were used in this work due to the evaporation step, which could lead to different types of oxides in ambient air.…”