Presentation Information
[9p-E202-13]Charge–Discharge Characteristics of a Rechargeable Zinc Battery
with Asymmetric State-of-Charge Design
〇Rintaro Kagawa1, Satoshi Ogawa1 (1.Suwa Univ of Sci)
Keywords:
rechargeable battery,aqueous battery,zinc-anode battery
Aqueous zinc-based rechargeable batteries are promising as high-power and low-cost energy-storage devices. However, zinc shape change and dendrite formation, as well as oxygen evolution from the Ni positive electrode at high SOC, remain major challenges. In this study, an asymmetric SOC design was proposed by limiting the SOC range of the positive electrode and retaining excess metallic zinc at the negative electrode. A clear voltage rise was observed near the end of charge, enabling charge termination before the positive electrode reached a fully charged state. The design concept and cycle performance will be presented.