Кислотные аккумуляторы

Method and the resultsof measurementof the internalresistance ofbattery duringitschargeanddischarge are described.It was establishedthat the internal resistance ofthe batteryin operatingvoltage range is almost equallywhencharging and dischargingand does not dependon the current.

We studied the electrochemical deposition of lead dioxide on titanium coated with colloidal graphite. It is showing that under optimal process conditions possible to obtain high quality coatings with good adhesion to the base and high-bit characteristics. Received bit characteristics of the layout of the backup power source.

The influence of porous structure of the absorptive glass mats manufactured by «Hollingsworth&Vose» (thickness 2.8 mm) and BernardDumas» (thickness 3.0 mm), modified by impregnation with polymeric emulsions on the basis of polyvinylidene fluoride (KYNAR), polyvinylpyrrolidone copolymer with styrene (PVS) and polytetrafluoroethylene (Tf), on the efficiency of ionization of hydrogen in lead-acid battery mock-ups. The use of polymer modified emulsions separators from absorbtive glass mat allows to increase the ionization rate of hydrogen on lead-dioxide electrode.

УДК 541.135

DOI:  https://doi.org/10.18500/1608-4039-2016-16-1-17-23

УДК 541.135

DOI:  https://doi.org/10.18500/1608-4039-2016-16-1-10-16

УДК 541.135

DOI: https://doi.org/10.18500/1608-4039-2016-16-2-77-87

The review deals with studies of the properties of lead alloys used to fabricate electrode grids of sealed lead-acid batteries.

One of the key steps to improve environmental situation is reducing pollutants released by automobiles. As of now, electric cars are the most commonly used type of eco-friendly vehicles. However, having a limited travel range they require an infrastructure system of charging stations to operate. Moreover, while electric vehicles don’t produce negative emissions directly they can still contribute to pollution if their energy is generated using fossil fuels.

The comparison of performance of positive electrodes of lithium-sulfur batteries made using the binders based on fluoroplastic (PVDF Solef 5310 and Kynar) and polyethylene oxide (PEO) was carried out. The electrodes made using PVDF Kynar or limited amounts of PEO were shown to have certain advantages. It was also found that electrodes with PEO had an increased specific capacity during the initial period of cycling, whereas electrodes with Kynar were characterized by the minimum capacity fading during cycling.

The short review is devoted to the description of the effect of adding vinylene carbonate into the electrolyte of lithium-ion and sodium-ion batteries on the structure and properties of passive films on electrodes and on the behavior of batteries accordingly. The reviewed literature covers the works of the last 20 years mainly.

The effect of carbon materials of two types was studied: multi-walled carbon nanotubes (“Art-nano” of the NSU “S” brand (TU BU 690654933.001.-2011)) and multilayer graphene (“Art-nano GT” (TU BU 691460594.004–2017), and modifications by treatment with ozone and dimethylformamide (manufacturer LLC Advanced Research and Technology, Belarus) on the structural characteristics, capacity and utilization of the active mass of the negative electrode of a lead-acid battery.