Топливные элементы

Using complex models, including the solution percolation problem and electrochemical kinetics calculations are considered the features of a solid polymer fuel cell catalyst layers with a catalyst based on nanoscale carbon materials, including graphene nanowires. These calculations are consistent with the experimental data presented by optimizing the composition of the catalyst layers. It is shown that the addition of 20 wt.\% nanofibres graphene can reduce ohmic losses from the ion current and improve the performance of the fuel cell is 20%

В работе рассмотрена металлизация электролитной матрицы щелочного матричного топливного элемента, обусловленная растворением платинового катализатора на кислородном электроде этого элемента. Показано, что уровень металлизации зависит от условий функционирования топливного элемента и структурных особенностей его составляющих.

The work reviews the influence of gas impurities in fuel and oxidizing chemical on the alkaline oxyhydrogen fuel cell functioning. It shows that methane impurities act differently on anode and cathode, while other gases (except noble gases), including carbon monoxide, which is a poison for fuel cell with acid solution, influence the operation of alkaline fuel cell through the reaction with potassium hydroxide (KOH). Substitution electrolyte for fresh recovers fuel cell performance.

The method of the rotating disk electrode studied electrochemical behavior redox mediator methylene blue in bioelectrochemical system «glucose – cell – mediator – electrode» and is shown that methylene blue is reversible oxidation-reduction a mediator and can be applicable at realization of the microbic media even anode on the basis of glucose and cell of Escherichia coli and Enterobacter cloacae.

DOI: 10.18500/1608-4039-2015-15-4-175-179

The reasons, that lead to the performance loss of alkaline matrix electrochemical generator (ECG) based on hydrox cell and therefore reduce the fuel cell stack cycle life, are highlighted in this article. It is shown that storage of ECG, preserved with a special gas mixture within up to 20 years, doesn't lead to noticeable characteristic fluctuation.

УДК 541.138

DOI:  https://doi.org/10.18500/1608-4039-2016-16-1-24-29

Electrocatalysts for methanol oxidation was studied. They were prepared on the base of carbon nanotubes, covered by polyelectrolytes with differently charged functional groups, which was changed by platinum with subsequent reduction. Then ruthenium was spontaneous deposited on metal platinum. The prepared catalysts were more active compared to commertial ETEK Pt-Ru (50:50 at. %) catalysts.

УДК 541.135

DOI: https://doi.org/10.18500/1608-4039-2016-16-4-207-225

The wastewater is potential processing facilities, from which you can receive bioenergy and biochemicals. Recovery of energy and valuable products can partially compensate for the cost of wastewater treatment and reduce some of the dependence on fossil fuels

УДК 539.23 + 544.6.018

DOI:  https://doi.org/10.18500/1608-4039-2016-16-4-196-206

This paper reviews the methods used nowadays for solid-oxide electrolyte film deposition. Problems and perspectives in the field of development of solid oxide fuel cells with film electrolyte are discussed.

DOI: https://doi.org/10.18500/1608-4039-2018-18-2-91-97

DOI: https://doi.org/10.18500/1608-4039-2018-18-3-141-154