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


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Utilization of lamellar nickel-oxide electrodes

The paper suggests a new way of more effective use of nickel in the production of alkaline cells with pocket-plate oxide-nickcl electrodes which also helps reduce pollution of the environment.

Electrochemical properties of foamgraphite

It is experimentally proved, that electrochemical properties of foamgraphite are determined by a mode of the first cycle of a charge (a mode of formation of a superficial layer on carbon). It is shown, that the mode of a charge with application of high density of a current (a mode of short circuit) creates conditions of formation superficial isolation multifunctional layer (IML) on a carbon material mainly from a carbonate of lithium.

Features of freeze-drying synthesis and electrochemical properties of cathode materials based on Li2CuO2

Cathodic materials based on Li2CuO2 are synthesized by cryochemical technique. The Li2CuO2 anomalous electrochemical behavior during lithium intercalation-deintercalation is shown to be fundamental feature. Such behavior is not connected with chemical mhomogenitv Low synthesis rate of Li2CuO2 at temperatures lower than 700°C can be explained by nearness of the low-temperature border of thermodynamic stability range.

Synthesis of lithium metazirconate phase using thermodynamic simulations

The optimal conditions for synthesis of lithium metazirconate phase with minimal contaminations has been determined using thermodynamic modeling method three routs were considers: solid state synthesis; sol-gel method and cocrystallization from nitrate solution. The results of calculations were proved by experiment. The sol-gel method was found to be most appropriate. The feasibility of control of product dispersion was shown.

Technology principles of litium-ion cell production

The article contains basic principles of lithium-ion and lithium-polymer batteries production. Examined arc different constructions of power sources, methods of electrode production, assembly, formations and cells storage. Attention is also drawn to the problems of the batteries quality and safety insurance.

Structural and electrochemical properties of nickel

The article reviews and analyses a number of papers on physical-chemical properties of nickel hydroxide. Attention has been paid to the modifications of nickel hydroxide crystal structure and the existing ways of its synthesis. The main steps of building a physically-based model of proton mass transport in nickel-oxide electrodes are presented and the most effective methods of nickel hydroxide activation are defined.

Sulfurizingpoly(5-vinyl-2-methyl)pyridine: synthesis and electrochemical properties

Poly(5-vinyl-2-methylpyridine) sulfurized with elemental sulfur at 140-320°C (sulfur content up to 45%) possess electric conductivity (6.4·10-11-1.6·10-7 S/cm), paramagnetism 6.2·1018–5.0·1019 sp/g, g = 2.0043-2.0046, AH = 0.49-0.58 mT), redox and complex-forming properties.

Thermodynamic simulation of oxide ionic equilibria in mixtures of alkali element carbonates

The thermodynamic simulation of equilibriums in the system O2 + СO2 gas mixture – molten alkali carbonates has been performed. Two schemes were proposed to calculate the chemical equilibriums: CO32- = О2- + CO2, O22- = O22- + 1/2O2, 2O2- = О2- + 3/2O2.

Lithium titanophosphate as cathode, anode and electrolyte for lithium batteries

The electrochemical properties and ionic conductivity of the LiTi2(PO4)33 (S.g. R-3c) synthesized via mechanical activation (MA) route have been investigated. It was shown that MA decreases temperature and time of synthesis facilitating preparation of more homogeneous final compound. The cycling studies were carried out with electrochemical cell LiTi2(PO4)3 (С) / LiPF6 + EC + DMC / Li in galvanostatic regime.

The automatic module for cycling of electrochemical cells

The automatic module device for cycling in galvanostatic regime with a wide range of charge/discharge current and measuring signals from electrochemical cells is developed. The software allowing governing the cycling processes and providing friendly interactive interface is written.

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