Первичные элементы

The system Li/1M LiBF₄ in γ-butyrolactone/Вi₂Se₃ <1%Си> is firstly investigated by the impedance spectroscopy method. The measured impedance spectra as a function of the depth of discharge and temperature are presented. Modeling the experimental data was carried out on the basis of different equivalent circuits and their acceptance is estimated. We have determined the parameters of the circuits' elements and found the coefficients describing the electrode reactions and interfaces.

The structural model of the alkaline accumulator based on the well-known empirical dependences describing the accumulator discharge was suggested. It was shown that to describe the discharge curves correctly together with the basic current producing chemical reaction there must be a parallel chemical reaction that results in an unstable phase of small capacity.

A structural model of the alkaline accumulator that takes into account self-discharging is suggested from which all the well-known empirical dependences were obtained. It was shown that the existing empirical dependences describing the process of self-discharging in alkaline accumulators don't contradict one another but supplement each other as they are true, each in its interval of discharging time.

Problems of using fuel cells as both electric and heat energy sources are reviewed. Such "hybrid" fuel cells possess enhanced net efficiency up to 90%. Some examples of fuel cells sets use in dwelling from small cottages up to multi-storey hotels are presented.

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DOI: https://doi.org/10.18500/1608-4039-2018-18-2-84-90

DOI: https://doi.org/10.18500/1608-4039-2018-18-2-77-83