RT Journal Article
SR 00
ID 10.1080/00032719.2017.1300806
A1 Delgado, D.
A1 Minakshi, M.
A1 Kim, D-J
A1 Kyeong, W.C.
T1 Influence of the oxide content in the catalytic power of Raney nickel in hydrogen generation
JF Analytical Letters
YR 2017
FD 2017
VO 50
IS 15
SP 2386
OP 2401
AB The influence of oxides in the hydrogen evolution on Raney nickel electrocatalysts was characterized by electrochemical impedance measurements. In addition, these materials show competitive overpotentials for hydrogen evolution with a modified Watts bath as a binder for the Raney nickel. The optimum result was −190 mV of overpotential at 100 mA cm−2. Oxygen in the Raney Ni catalyst affects its electroactivity toward hydrogen evolution. The source of oxygen is related to the presence of chloride ions in the modified Watts bath. A Watts bath binds Raney Ni particles to the surface of the catalysts and chloride regulates the oxygen content in the nickel binder during electrodeposition. High oxygen content increases the hydrogen evolution overpotential of the electrode. The electroactivity of the synthesized porous coatings was evaluated by polarization curves and impedance plots. In addition, surface characterization by X-ray diffraction, field emission–scanning electron microscopy equipped with energy-dispersive analysis, and X-ray photoelectron spectroscopy is reported.
PB The influence of oxides in the hydrogen evolution on Raney nickel electrocatalysts was characterized by electrochemical impedance measurements. In addition, these materials show competitive overpotentials for hydrogen evolution with a modified Watts bath
SN 0003-2719
LK https://researchrepository.murdoch.edu.au/id/eprint/38607/
UL https://doi.org/10.1080/00032719.2017.1300806