Electrochemical devices based on nickel hydroxide electrodes are used in different areas. The main ones chemical current sources, variable transparency “smart” windows, for carrying out electrocatalytic reactions, sensors determining various substances. In this regard, methods of synthesis great interest, especially those that allow forming directly the surface electrodes. One these is electroc...

Anodes for solid oxide fuel cells (SOFCs) have been prepared by electrodeposition of either Co or Ni into a layer of porous yttria-stabilized zirconia (YSZ), 60 μm thick. The YSZ, having 65% porosity, was prepared by tape casting with graphite pore formers and was attached to the dense YSZ electrolyte. After adding 10 vol % CeO2 by impregnation of aqueous solutions of CeNO3)3, followed by calci...

A major challenge in developing zinc-air batteries (ZABs) is to exploit suitable cathodes efficiently accelerate the key electrocatalytic processes involved. Herein, a bifunctional oxygen catalytic self-supported MnO2-based electrode designed that displays superior reduction and evolution reaction performance over noble metal electrodes with total overpotential of 0.69 V. In addition, as-synthe...

background: welding is one of the most exercised industrial processes which welders are exposed to chemical and physical hazardous agents. this study was conducted to evaluate occupational and environmental exposures to aerosols generated by welding processes in a factory. methods: a total of 28 samples of aerosols were collected at 4 different locations including indoor, outdoor, source of wel...

The mechanical properties of graphene nanoribbons on Ni(111) surfaces with different contact sizes are investigated by means of density functional theory. For finite contact sizes, the stress behavior of graphene nanoribbons on metal electrodes is likely to be similar to that of suspended graphene, however the critical strain is not reached due to the sliding friction at the interface. The comp...