Топливные элементы

Copper lanthanum titanate La2/3Cu3Ti4−xFexO12−δ x = 0–1 was doped with Fe3+ cations. The diagram of the dependence of the tolerance factor on the relative electronegativity of cations for all studied compositions was represented. It was shown that all the compositions exist in the region of existence of distorted perovskite. X-ray diffraction and X-ray phase analysis methods established the region of existence of solid solutions of La2/3Cu3Ti4−xFexO12−δ obtained by ceramic technology, which was 0 ⩽ x ⩽ 0.4.

The main reasons that make mankind look for new sources of energy are decreasing dependence on fossil fuels and reducing pollution. Wastewater treatment with the help of microbial fuel cells is an area where these two goals can be combined. Microbial fuel cells, in which microorganisms catalyze the oxidation of organic substances, represent a new and promising alternative for electricity generation. The creation of an efficient cathode in such systems is the important problem. It is evident that in these applications an oxygen (air) electrode is a promising cathode.

In this paper a new design of a container is detailed for sealed lead-acid battery operating overboard of a submersible vehicle in conditions of increased ambient pressure. Such a container is both a battery jar and a pressure compensator. It has been shown that a mandatory requirement for such container use is an application of a gelled-electrolyte. Authors have offered a two-stage technology of filling of accumulators without using vacuum pumping.

The Work is devoted to the research of influence of superficial processings of bipolar plates (BP) on specific electric characteristics of fuel ce)(s (FC). Researches were conducted on plates on the basis of the titan. Two methods of processing BP are considered: electrochemical gilding and ionic implantation of carbon. In work short descriptions of the resulted technologies, and also a technique and results of experiments are presented. In work it is shown that as gilding, and ionic implantation carbon titanic BP electric characteristics FC improve.

The influence of the way of introduction of metallic nickel as a binder into the active mass of the metal hydride electrode (MH) on the discharge characteristics of the NMH-6-type hermetically-sealed nickel-MH batteries was examined.

A comparative study was made of the electrochemical characteristics of metal hydride (MH) electrodes based on powder compositions of various granulometric characteristics. The electrochemical discharge capacity of the MH electrode has been found to be strongly dependent of the linear grain size of the hydrogen-sorbing alloy and carbonylic nickel. An increase in the dispersity degree of the hydrogen-sorbing alloy powder leads to reduction of the discharge characteristics of the MH electrode. A reverse dependence is observed for carbonylic nickel.

The method for air purification from carbon dioxide gas in operating electrochemical cell at oxygen pump mode is considered. The work suggests a mechanism of CO₂ removal. The effect of a number of parameters to CO₂ removal is discussed. A scheme of module application for air purification from CO₂ completed with Alkaline Fuel Cell Stack (AFCS) is proposed. Provided is a method for alkaline electrolyte decarbonization.