𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The evolution of oxygen on amorphous NiCoP alloys

✍ Scribed by A. Budniok; J. Kupka

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
306 KB
Volume
34
Category
Article
ISSN
0013-4686

No coin nor oath required. For personal study only.

✦ Synopsis

Characteristic chronovoltamperometric curve8 were plotted for amorphous Ni-C+P alloys. These alloys were obtained electrolytically and their amorphous structure was determined by X-ray diffraction method. After 18 h cyclic linear polarization of these alloys in 5 M solution of KOH in a range from the potential of hydrogen dvolution to-the potential of oxygen evolution the chronovoltamperometric curves were again plotted, the Tafel oxygen evolution coefficients were determined and also the structure of the products of oxidation of the alloys. A mechanism is postulated for the evolution of oxygen from an alkaline solution on Ni-Co-P alloys in which the role of catalyst is taken by CoO(OH), fi-Co(OH), and the amorphous products of oxidation of Ni-P alloy.

📜 SIMILAR VOLUMES

Hydrogen evolution and hydrogen sorption
Hydrogen evolution and hydrogen sorption on amorphous smooth MeP(x) (MeNi, Co and FeNi) electrodes
✍ Ivo Paseka; Jana Velicka 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 620 KB

Hydrogen evolution reaction (HER) was studied on amorphous Co-P(x), Ni-P(x) and Fe-Ni-P(x) electrodes, prepared by an electrolytic deposition. The activities of Ni-and Co-P(x) electrodes prepared at room temperature are nearly equivalent, those of Fe-Ni-P(x) are somewhat lower. Alloys prepared by th

Mechanistic study of the hydrogen evolut
Mechanistic study of the hydrogen evolution reaction on NiCoZn electrodes
✍ M.J. de Giz; G. Tremiliosi-Filho; E.R. Gonzalez 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 447 KB

Electrodeposited N&Co-Zn alloy on a mild steel substrate have shown high electrochemical activity for the hydrogen evolution reaction. Such materials were investigated previously by EDX surface analysis and evaluated as Hz-evolving cathodes in alkaline solution through steady-state techniques and un

Evolution of hydrogen and its sorption o
Evolution of hydrogen and its sorption on remarkable active amorphous smooth NiP(x) electrodes
✍ Ivo Paseka 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 941 KB

## Hvdroaen evolution reaction was studied on electrolytically prepared amorphous smooth Ni-P(x) layers wirh a phosphorus content of 3 to 14wt%. Ni-P(x) electrodes with a low P content about 3 wt% are very active. At the potential E = -0.2 V [rhe] in 1 N KOH at 23°C the current density of the hydr

The determination of kinetics parameters
The determination of kinetics parameters of the hydrogen evolution on TiNi alloys by ac impedance
✍ N.V. Krstajić; B.N. Grgur; N.S. Mladenović; M.V. Vojnović; M.M. Jaks̆ić 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 717 KB

The kinetics and mechanism of hydrogen evolution at Ti-Ni alloys electrode has been studied by means of steady-state potentiostatic polarization and ac impedance spectrum measurements. Complex-plane spectrum plots are derived for the h.e.r. at one of the most inactive, typical hydridic, Ti-Ni, and o