- Lead-acid batteries:
- Nickel-cadmium batteries self-discharging performance
- Characteristics of Ni-MH battery self-discharge
Lead dioxide latitude d820 battery electrode
self-discharge :Oxygen evolution caused by self-discharge ;And alloy plate contact corrosion, lead dioxide is reduced to form aluminum sulfate;is effected by oxygen ;effect impurity.
Lead electrode from battery self-discharge:
Lead electrode self-discharge from the hydrogen and oxygen corrosion, but because the solubility of oxygen in sulfuric acid is small, and can be removed. Electrolyte solution the hydrogen ion concentration is high , self-discharging of Dell vostro 1500 battery is apparent caused by hydrogen evolution . Equilibrium electrode potential of lead is negative electrode than the balance of hydrogen , but due to lead in the high overpotential of hydrogen for battery evolution, hydrogen evolution reflecting is not obvious.
Sufficient electricity for the nickel battery oxide electrode easily caused oxygen evolution reaction in the stored process ,due to instability of the manganese dioxide, resulting in self-discharge. Cadmium anode in the electrolyte solution is very stable, so nickel-cadmium batteries self-discharge rate is smaller, but the self-discharge rate of high-rate discharge of the nickel-cadmium Dell latitude d830 battery is larger, due to a larger electrode surface area.
Like other batteries,sucb as nickel-metal hydride batteries can also self-discharge at a certain degree. High-voltage nickel-metal hydride battery device is that the battery shell is filled with hydrogen, the negative electrode active material of hydrogen and electric power active material nickel sony vgp-bps2cbattery oxide cathode directly contact ,self-discharging during the holding .
The article via: laptopinfo
Related articles: laptop-batteries
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