The energy efficiency of water electrolysis was considerably improved under a high magnetic field. This proved by measuring the cell voltage, IR-drop, and electrode potentials for which galvanostatically operated in alkaline (4.46 KOH) acidic ( ) solutions. A large reduction voltage achieved field, especially at current density. decrease measured interrupter method, depended on concentration electrolyte In oxygen overpotential reduced more than hydrogen overpotential.

The dendrite growth behavior of Li metal galvanostatically electrodeposited on Ni substrate in a –propylene carbonate electrolyte solution was situ observed by laser scanning confocal microscope with metallographic microscope. A precursor is stochastically evolved probably through solid interphase layer produced the surface chemical reaction between reduced and an organic electrolyte. measured length randomly growing arms statistically analyzed. initiation period becomes shorter increasing...

Galvanostatic water electrolysis was conducted in and solutions under microgravity. The corresponding terrestrial experiments employed two kinds of electrode configurations: a vertical cathode downward-facing horizontal cathode-over-anode (C/A) arrangement. latter configuration designed to simulate the microgravity condition. ohmic resistance gas bubble dispersion zone near electrodes measured by current interrupter method compared for these three different cases. transient variation C/A...

The hydrogen evolution reaction (HER) was investigated using Ni catalytic electrodes with micro-patterned surfaces. present aim to correlate HER efficiency the surface wettability of cathodes produced different micropatterns. Regular microdot arrays, 5–10 μm in diameter, pitch were fabricated on a 7 mm diameter Cu substrate and tested alkaline water electrolysis (AWE) experiments. Using this design, it may be possible relate electrochemical kinetics electrolyte localized area....

The behavior of bubbles generated by the hydrogen evolution reaction (HER) and effect these on HER performance were investigated using Ni micro-patterned electrodes. This study focused correlation between bubble behaviors affecting potential increase surface microstructures cathode. microdot array structures with diameters approximately 5–10 μm, pitch various dot heights fabricated for alkaline water electrolysis measurements. controlled wettability electrode. change in influenced efficiency...

Nanowire and nanotube arrays of transition metal were produced by potentiostatic electrochemical deposition using a polycarbonate membrane filter template (15 to 200 nm in nanopore diameter). Nanotubes are appropriately controlled partial filling the pore cross section; nanowires result when is completely filled. In this manner, nanotubes metals (Ni, Co, Fe) as well Cu nanowire. The have an aspect ratio ranging from 50 400 dependent on transient variation cathodic current. rate must be...

Abstract It is well known that the close-packed CF 3 -terminated solid surface among most hydrophobic surfaces in nature. Molecular dynamic simulations show this hydrophobicity can be further enhanced by atomic-scale roughness. Consequently, gap width enlarged to about 0.6 nm for roughened surfaces. In contrast, does not increase too much a rough CH surface. We exists microscopic Cassie–Baxter state, whereas as Wenzel state. This finding elucidates underlying mechanism different widths of...

The molecular diffusion coefficients of LiPF6, LiTFSI and LiBF4 in PC were measured by Moiré pattern technique within the salt concentration range from 0.5 M to 1.0 at temperature 258 K 298 K. coefficient LiPF6 are around 4×10-6 cm2 s-1 that is 3×10-6 activation energy LiPF6- PC, LiTFSI-PC LiBF4-PC system was calculated an Arrhenius plots. They 14, 18 21 kJ mol-1, respectively.

The concentration profile of Cu2+ ion was measured near a plane vertical cathode placed in aqueous solution containing and an excess as supporting electrolyte. It is known that the absorption bands cupric infrared region hydrogen ultraviolet are widely separated. distribution absorbance electrolyte at wavelength about 800 nm surface by image sensor with resolution power 4.4 μm. experimental results coincided well theoretical calculation. Under presumption uniform current density, factor