Hydrogen evolution reaction at nickel boride electrodes in aqueous and in aqueous methanolic and ethanolic solutions

Abstract

Abstract:The hydrogen evolution reaction (HER) was investigated at nickel boride pressed powder electrodes in aqueous and in aqueous methanolic (ethanolic) alkaline (1 M NaOH) solutions in the presence and the absence of NaCl(0.1 M) and H3B03 (0.1 M) at 25°C by the steady-state polarization and ac impedance techniques. The ac impedance data were analyzed using the constant-phase element (CPE) model. It was found that the electrocatalytic behaviour of a nickel boride electrode for the HER was the same in all the above media and that the HER proceeds via the Volmer-Heyrovsky mechanism. The kinetic parameters of the HER were determined.

Synthesis and Characterization of an Alumina Forming Nanolaminated Boride: MoAlB

“…In addition, many of them have a unique combination of mechanical, electronic, and thermal properties that make them technologically important for applications such as wear resistant coatings1, primary battery electrodes23, chemical catalysis45, and high-temperature structural materials6. However, their use, especially in bulk form, is often limited by high processing costs and, more importantly, poor oxidation resistance when heated in air.…”

Influence of environmental factors on the electrocatalytic dechlorination of 2,4-dichlorophenoxyacetic acid on nTiN doped Pd/Ni foam electrode

“…The highest average current efficiency of 14.36% was reached at a current density of 2.5 mA cm À2 after 30 min. Afterwards, side reaction HER accelerated due to the less competition for [H] by the residual 2,4-D. H 2 gas bubbles generated on the cathode surface would further impede 2,4-D removal [35]. Thus, average current efficiency decreased after 30 min.…”

The electrocatalytic behaviour of electroless Ni–P alloys

“…Particular attention has been paid to nickel [14][15][16] and nickel based alloys [17][18][19][20][21][22][23] namely those involving a non-metallic element such as Ni-P [24][25][26][27][28][29][30][31][32].…”