1. Dioxide lead electrode self-discharge
(1). Oxygen evolution caused by the self-discharge (2). And alloy plate contact corrosion, lead dioxide is reduced and the formation of aluminum sulfate … (3). With oxygen to the role of (4). And the role of impurities.
2. Lead electrode self-discharge
Lead electrode self-discharge hydrogen and oxygen from corrosion, but because of the oxygen solubility in sulfuric acid in small, but can also be removed.
Electrolyte solution of hydrogen ions at high concentrations, hydrogen-induced apparent self-discharge. The balance of lead electrode potential than hydrogen electrode negative balance, but because of lead-off potential of hydrogen evolution higher hydrogen evolution reflects not obvious. If higher purity lead, the fewer impurities, the lighter hydrogen corrosion, hydrogen evolution caused by the smaller lead electrode self-discharge.
Second, Ni-Cd batteries self-discharge performance
Sufficient electricity for the nickel oxide electrode, because of the existence of unstable manganese dioxide, storing the process prone to oxygen evolution reaction, resulting in self-discharge. Cadmium negative electrode in the electrolyte solution is very stable, so nickel-cadmium batteries self-discharge rate of the smaller, but high-rate discharge of the nickel-cadmium sony laptop battery, because of the larger electrode surface area, so self-discharge rate as well.
Three, nickel-hydrogen sony vgp-bps5 self-discharge characteristics
With other batteries, like nickel-hydrogen batteries exist also some self-discharge phenomenon. High-voltage nickel-hydrogen sony pcga-bp2s are devices that will be filled with hydrogen gas throughout the battery shell, anode active material of hydrogen and electricity as cathode active material nickel oxide electric direct contact happened in the shelving process reflects the self-discharge.