The influence of curing process for negative electrode into trickle charging current on sealed lead-acid battery - The characterization of negative electrode by impedance analysis

The influence of curing process has been studied to measure trickle-chargin g current during trickle use for a sealed-lead acid battery. The investigat ion has been studied to measure pore distribution for active material and t o analyze impedance measurement for negative electrode. According to trickl e charging evaluation test for a cell, trickle-charging current depended on the curing temperature and humidity. Pore distribution measurements for ac tive materials showed that surface area of active material depends on curin g temperature. Curing at 75 degreesC showed much trickle-charging current. From the impedance analysis, it was shown that the reaction resistance for lead on surface of the electrode changed with the curing temperature and hu midity. As to reduce trickle-charging current, it means to tend not to be p olarized, there was the suitable condition in curing process around 56-65 d egreesC and 0.12-0.16 H2O kg dry air(-1).