The oxidation reaction of lead sulfate formed at the interface between the lead plate and the porous active material of a lead acid battery
- Kyoto Univ. (Japan). Faculty of Engineering
Porous lead dioxide prepared on the lead substrate has been discharged galvanostatically and then discharged at {minus} 450 mV from the equilibrium potential of PbO{sub 2}/PbSO{sub 4} potentiostatically. The state of the interface between porous lead dioxide and the lead substrate scarcely changed after the galvanostatic discharge. On the other hand, after the following potentiostatic discharge, the large, plate-like lead sulfate crystals were formed at the interface between porous lead dioxide and the lead substrate. Then, such an electrode was oxidized potentiostatically. The oxidation current-time transients implied the existence of the electronic resistance in the electrode. Such a resistance was related to the large, plate-like lead sulfate crystals which were formed at the interface between porous lead dioxide and the lead substrate during the potentiostatic discharge. These lead sulfate crystals were not oxidizable and remained at the interface between porous lead dioxide and the lead substrate.
- OSTI ID:
- 6736822
- Journal Information:
- Journal of the Electrochemical Society; (USA), Vol. 137:3; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LEAD OXIDES
CHEMICAL PREPARATION
LEAD-ACID BATTERIES
PERFORMANCE TESTING
CRYSTALS
INTERFACES
LEAD SULFATES
POROUS MATERIALS
POTENTIOSTATS
CHALCOGENIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
LEAD COMPOUNDS
MATERIALS
MEASURING INSTRUMENTS
OXIDES
OXYGEN COMPOUNDS
SULFATES
SULFUR COMPOUNDS
SYNTHESIS
TESTING
250902* - Energy Storage- Batteries- Performance & Testing
250903 - Energy Storage- Batteries- Materials
Components
& Auxiliaries
400400 - Electrochemistry