Abstract
Department of Chemistry and Institute of Basic Science, Sungshin Women’s University, Seoul 136-742, South Korea(Received January 28, 2010 : Accepted February 11, 2010)Abstract : The rechargeable Zn-air battery is considered as one of the potential candidates for thenext generation secondary batteries due to its many advantages. However, its further applicationsand commercialization have been limited by the complexity of the reactions on air electrodewhich are oxygen reduction and evolution reactions (ORR/OER) upon discharging and chargingprocesses, respectively. In the present study, lanthanum was impregnated into a commercial Pt/Cgas diffusion electrode, and it clearly verified significantly enhanced cycling stability and revers-ibility. The results presented in this study show the possibility of repeated charge/discharge processesfor Zn-air batteries with a La-loaded air electrode, and they demonstrate the potential as a prom-ising next generation secondary battery.Keywords : Secondary battery, Zn-air battery, Rechargeable, Oxygen evolution reaction, Oxygenreduction reaction
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