Abstract
AbstractThe storage process of plaster and sintered batteries with CoO additive in the proportion of 100: 8 in the positive active material was studied. The change of open-circuit voltage of two kinds of batteries stored in 60 °C discharge state with storage time, the charge–discharge curve of 0.2C after 20 days storage, and the charge–discharge curve of 0.2C after plaster battery 60 °C storage were measured. Then, the microstructure of positive and negative active materials before and after storage was compared and analyzed by XRD. Based on the experimental results, the chemical physics behaviors of positive and negative active materials during battery storage are described, including the changes of material phase structure and microstructure, and the relationship between battery storage performance and electrode material structure. Finally, the attenuation mechanism of battery storage performance is discussed.
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