Cd|KOH|NiOOH

Zn|NH4CI|MnO2

Li|LiClO4|MnO2

Pb|H2SO4|PbO2

H2|KOH|O2

свинцово-кислотный аккумулятор

Structural and Electrochemical Characteristics of Porous Lead Electrodes with Additive Nanostructured Carbon

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.

/The effect of modified absorbtive glass mat separators on the efficiency of hydrogen ionization in lead-acid battery mock-ups

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.

Measurement of lead-acid battery internalresistance in charging mode

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.

Research of influence of carbon additives in negative active material on work of the lead-acid batteries in partial state of charge mode.

Influence of the carbon additive in negative active material (NAM) on a resource of the lead-acid batteries working in a partial state of charge mode is studied. Extreme character of dependence of speed of degradation NAM from the maintenance in it of carbon is confirmed. Perceptivity of introduction of the carbon additive in negative electrodes of the lead-acid batteries working at partial state of charge mode is demonstrated.

Estimation of lead-acid batteries exploitation possibility in high-rate charge and partial state of charge mode

Lead-acid batteries exploitation possibility in pfrtial state of charge mode is demonstrated. Influence of this mode on chfracteristics of lead-acid batteries is studied.

Electrochemical Behavior of Pb-Sn-Ca-Al-Ba Alloys in Sulfuric Acid Solution

Electrochemical properties of Pb-Sn-Ca-Al-Ва alloys with the various content of barium are studied. It is established that the additive of barium reduces electrochemical activity of alloys at their cycling, and also reduces hydrogen and oxygen overvoltage.

Accelerated charge method of the lead-acid batteries. 1. Constant current stage of the charge

Strategy of the accelerated mode of the charge, including constant current charge to 80 % state-of-charge and a pulse charge by asymmetric current to a full charge is offered. Results of the first investigation phase devoted to studying of influence of a mode constant current charge on a resource of lead-acid accumulators are presented in this work. Various influence of size of an initial charge current on degradation of positive and negative active materials and possibility of charge of the accumulator to 80 % state-of-charge for 0.5 h is demonstrated.

Influence of pressure on structural characteristics of separation materials and oxygen ionization rate in the electrode block of the lead-acid accumulator

In this article was studied pressure influence in the electrode block of the model of the lead-acid accumulator on the most important physical properties (a specific surface, pore size distribution, compression properties, speed of capillary lifting of electrolyte) of absorbent glass mat separators of the trademarks «Hollingsworth» (USA) and "Bernard Dumas"(France) and on efficiency of an oxygen cycle. It is shown that the highest compression properties separators with a high specific surface (7-10 m2/g) possess. The increase of pressure in the electrode block conducts to pores size redistribution towards decrease in a share of a pore with a radius of 10-15 microns and increase in a share of smaller pore with radius of 1-5 microns. Observed reduction of a share of a large pore explains decrease in height and speed of lifting of electrolyte with higher pressure in the electrode block. The increase of pressure in the electrode block to 50 kPa leads to decrease oxygen ionization rate on a lead electrode.

Influence of a suspension of particles of the positive active material on negative lugs corrosion

Influence of a suspension of particles of the positive active material (PAM) in electrolyte on operation of the negative plate of the lead-acid battery is studied. The significant increase in speed of corrosion of a lead plate in case of contact of particles of PAM with its surface that can lead to appearance macro-defects on lugs of the negative plates is demonstrated.

Accelerated charge method of the lead-acid batteries. 3. Pulse charge

Strategy of the accelerated mode of the charge of the lead-acid batteries, including constant current charge to 80% state-of-charge and a pulse charge to 100% is considered. Influence of key parameters of a pulse charge (amplitude and duration of charge pulse, duration of a pause, the general duration of a pulse charge) on the efficiency of a charge and a heat-up of batteries are studied in this work.

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