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


Топливные элементы

A maintenance-free battery for carriages

The possibility to design hermetically-sealed nickel-cadmium high-capacity batteries with a pressure inside not higher than 0.2 atmex for carriages is shown.

Why iron compounds pollute the active mass of the lameller nickel-oxide electrode?

Possible cases of iron pollution of the active masses of lamellar-type nickel-oxide electrodes in nickel-iron and nickel-cadmium-iron batteries are analyzed on the basis of our own studies as well as literature data.

A microbial fuel cell based on Escherichia Coli

On the basis of cells Escherichia coli the microbial mediator anode is developed for process of oxidation of glucose and conditions of its work in a model of a microbial fuel cell in which as the cathode it is used dioxideleaden electrode are optimized.

Kinetics of Oxygen Reduction Reaction on Cobalt Containing Systems with Low Platinum Content

High temperature method was used to synthesize PtCo/C catalysts on the basis of various precursors. It was shown using the RDE method that a catalytic system with low Pt content (5.0 wt.% Pt + 1.5 wt.% Со) synthesized on the basis of H2PtCl6 and Co phthalocyanine on carbon black ХС72 demonstrates the highest electrocatalytic activity due to the formation of highly dispersed Pt3Co alloy particles. This was confirmed by XPS studies.

Degradation of matrix electrolyte under Molten Carbonate Fuel Cell environment

The change in phase composition, dispersibility and morphology of ?-, ?- and ?-lithium aluminates, which are the components of molten carbonate fuel cell were investigated after long exposure in Li/KCO3 (62/38 vol.%) eutectic melt under H2, H2 + CO2 (20-mol.%) and 0.33 O2 + 0.67 CO2 atmospheres at 650°C. ?- , ?- , ?- aluminates and their mixtures were found to transform into ?-phase under oxidative atmosphere. Under reducing atmosphere both ?- and ?-phases always coexist.

Production of electrolytes based on LiPF6 and mixtures of carbonate estors by means of double exchange reactions

By the methods of isothermal solubility, 19F NMR spectroscopy and also by implementation of ab initio quantum – chemical calculations the kinetics is explored and thermodynamics of reactions of double exchange in the systems K(Na)RF6 – LiBF4 – propylene carbonate – dimethyl carbonate. A method is offered of receipt of electrolytes on the basis of LiРF6 and mixtures of carbonate ethers. An electrolyte successfully is tested in elements with the hard cathodes.

Thermostable membranes for fuel cells

Thermostable proton exchange membranes for fuel cells are overviewed. Three groups of the membrane are described: modified membranes based on perfluorosulfonic acid, alternative sulfated polymers and corresponding composite membranes, acid-alkali polymer membranes.

Electrochemical activity of the electrodes with electrocatalytic coatings

Electrochemical activity of electrodes for electrolysis of water is investigated. As catalysts coating Ni-S-Co, suspension LaNi2.5Co2.4Al0.1 or their combinations were applied. As electrolyte at test of electrodes 30% KOH or NaOH is used. Current density varied in a range from 10 to 600 мА/cm2 at temperature 20-80°C. When the temperature increases from 20 to 80°C the current density on cathodes with composite LaNi2.5Co2.4Alo.i/Ni-S-Co catalyst increases 4 times at constant potential E = –1.10 V (rel. Hg/HgO).

Influence of structural parameters of lead-acid batteries on their service characteristics

The effect of new kind of the separator, with the glassmat on the positive plate, which pressing the active mass, and new alloys for positive grid on efficiency of service characteristics (starting capacity, the electrolyte level changing under the charging and discharging) was investigated.

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