сепаратор

Mass-transfer processes are considered in a double-chamber running electrolyzer for the synthesis hydroxide of nickel (ІІ) from solution of NiSO₄. The product of Ni(ОН)₂ appears at co-operation of ions of Ni²⁺ the ions of ОН^-, which are generated on a cathode. The mathematical model of processes is formulated. Decisions show dependence of concentrations of ions in a reactionary area from the managed parameters of process and current.

The aim of this work was to explore the possibility of designing a valve-regulated nickel-cadmium KGL300P battery on the basis of the commercial lamellar-electrode KL300P battery with the use of a universal principle of compulsory oxygen pumping into the cadmium electrode's pores. The unwoven geotextile TU 8397-056-05283280-2002 linen of the Geocom A-200 brand can be used as a separator material in the design of such a battery.

Some useful characteristics of the separators from glass-absorptive matrices produced by several manufacturers and intended for valve-regulated lead-acid batteries were studied, namely, compressibility, electrolyte capacity, capillary rise speed, oxygen absorption rate on the lead electrode, and hydrogen absorption rate on the lead-dioxide one. The usage of these separators provides forced pumping of the gases released (oxygen and hydrogen) to the absorptive electrode's pores and allows the oxygen and hydrogen ionization rates to be raised.

Work of running double-chamber electrochemical reactor is investigational for an electrosynthesis Ni(OH)2. It is shown that the basic parameter of the mode is a relative current is attitude of current of I toward the theoretical equivalent current of I*, at that fully initial reagents are expended in a reactor. Mode of I/I* = 1 differentiates two areas (I < I* and I > I*) with salutatory and like changing physical and chemical and electrochemical properties Ni(OH)2.

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

The efficiency of oxygen ionization in a lead-acid mock-up was studied using a separator based on an absorptive glass mat (AGM) and polymer non-woven fibrous materials based on F-2M polyvinylidene fluoride and polystyrene. Fibrous material obtained by capillary-free electrospinning. The technological and structural characteristics of the polymer material are investigated. It was found that the use of a sandwich polymer/AGM/polymer separator significantly increases the efficiency of oxygen ionization.

The paper considers the most significant properties of moulding solutions based on a mixture of polyvinylidene fluoride and polystyrene for the process of capillary-free electrospinning nonwoven materials. It has been shown that the material obtained from the mixed solution of polyvinylidene fluoride and polystyrene in the ratio of components 0.75 : 0.25 is the largest porous, the diameter of the fibers is in the widest range from 0.14 to 2.8 ?m, and branching of the fibers is observed.