ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)


электролиз

Electrochemical and mass-transfer processes in the system of electrochemical synthesis of nickel hydroxide

Mass-transfer processes are considered in a double-chamber running electrolyzer for the synthesis hydroxide of nickel (ІІ) from solution of NiSO4. The product of Ni(ОН)2 appears at co-operation of ions of Ni2+ the ions of ОН-, which are generated on a cathode. The mathematical model of processes is formulated. Decisions show dependence of concentrations of ions in a reactionary area from the managed parameters of process and current.

Pressure influence on water electrolysis process with depolarization anode by sulfurous anhydride

Depolarization of anode by sulfurous anhydride allows to reduce power inputs on hydrogen production in 1.5 times. The reason which prevents commercialization of this process is realization impossibility of industrial electrolysis current density because of SO2 feeding diffusion limitation to anodic catalytic layer. Pressure influence on water electrolysis process with depolarization anode by sulfurous anhydride in solid polymer electrolyte electrolyzers is examined.

YaDevelopment of new electrocatalysts for low temperature electrolysis of water

Optimized methods of synthesis and modification of high efficient electrocatalysts for alkaline electrolysers have been described. The results of new electrocatalyst characterization by means of some physico-chemical methods are presented.

Influence of additive in electrolytic production of zinc electrode on its electrical characteristics

We have studied the influence of brighteners used in zinc electroplating on the characteristics of zinc powder, which produced in the manufacture of electrolytic zinc electrode. Their effect was determine on the cathodic process, the nature of spongy zinc deposits, corrosion of the zinc electrode and capacity characteristics with intense discharge in a nickel-zinc accumulator.

Research of degradation mechanism of the membrane-electrode assemlies of solid polymer water electrolyzer

Concerning performance, safety, reliability and durability issues, the membrane-electrode assembly (MEA) is probably the weakest cell component. Most performance losses and most accidents occurring during PEM water electrolysis are usually due to the MEA. The purpose of this article is to report on specific degradation mechanisms of the MEA and electrolyser in whole.