Journal
JOURNAL OF POWER SOURCES
Volume 159, Issue 1, Pages 752-757Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2005.10.110
Keywords
zinc-air battery; polymer gel electrolyte; air-electrode; potassium hydroxide; oxidation
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The gel electrolyte for the zinc-air cell was prepared by mixing hydroponics gel with a 6 M potassium hydroxide aqueous solution. The self-discharge of cells was characterized by measuring the open-circuit voltage. The effect of a discharge rate of 50 mA constant current on cell voltage and plateau hour, as well as the voltage-current and current density-power density were measured and analysed. The electrode degradation after discharge cycling was characterized by structural and surface methods. The oxidation of the electrode surface further blocked the utilization of the Zn anode and was identified as a cause for the failure of the cell. (c) 2005 Elsevier B.V. All rights reserved.
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