Effect of Electrolyte Cation for Memory Characteristics of Positive Electrode for Alkaline Storage Battery

Abstract

The characteristics of “Memory effect<, also called stepped discharge curve, in the alkaline storage battery was studied. From the change of positive electrode potential of shallow charge-discharge cycles, it was found that KOH and NaOH electrolytes were raised memory effect within 200 cycles, however, LiOH electrolyte was not recognized it 300 cycles and over. Results from X-ray diffraction and Scanning electron microscope image suggest that this difference was attributed to the surface morphology of the nickel active material under the different alkaline cation electrolyte conditions