D. Pavlov et al., Influence of temperature, current and number of cycles on the efficiency of the closed oxygen cycle in VRLA batteries, J POWER SOU, 85(1), 2000, pp. 164-171
Citations number
13
Categorie Soggetti
Physical Chemistry/Chemical Physics","Environmental Engineering & Energy
An experimental method was created for assessment of the efficiency of the
closed oxygen cycle in VRLA cells. It was experimentally established that a
t 25% compression of the AGM separator the battery life is the longest one.
On the other hand. the efficiency of the closed oxygen cycle (COC) is the
highest at 20% compression of the AGM. With an increase of the compression
the efficiency of the COC decreases because of the decreasing of the number
of the channels (pores) along which the oxygen flows can move through the
AGM separator. It was established that the polarization of the VRLA cell is
mainly determined by the resistance arising at transportation of the oxyge
n through the AGR I. There is an upper limit of the rate of recombination o
f oxygen that depends on the structure and properties of the AGM. With incr
ease of the temperature the efficiency of the COC and polarization of the V
RLA cell decrease. During cycling, the properties and structure of the AGM
change that affects the parameters of VRLAB. (C) 2000 Elsevier Science S.A.
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