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|標題:||Nafion/lead oxide-manganese oxide combined catalyst for use as a highly efficient alkaline air electrode in zinc-air battery||作者:||Yang, Ting-Hao
|關鍵字:||Lead-manganese oxide;Nafion;Oxygen reduction;Zinc-air battery;oxygen reduction reaction;electrocatalytic reduction;cathode catalyst;nanoparticles;platinum;mechanism;cells;supercapacitors;composite;o-2||Project:||Electrochimica Acta, Volume 56, Issue 17, Page(s) 6205-6210.||摘要:||
In this study, we report the application of an inexpensive and easily prepared lead oxide-manganese oxide catalyst combined with Nation (designated as Nf/PbMnO(x)) as a highly efficient air-cathode for a zinc-air battery. We verify the mechanistic study of the reduction of O(2) for Nf/PbMnO(x) in alkaline aqueous solution using rotating ring/disk electrode voltammetry, and also an electrochemical approach using a wall-jet screen-printed ring disk electrode. The presence of Nf/PbMnO(x) shows great catalytic activity for the disproportionation reaction of HO(2)(-) to O(2) and OH(-) with an overall 4e(-) reduction of O(2) in the first reduction reaction. The 4e(-) reduction O(2) was eventually achieved at the Nf/PbMnO(x) through evidence from the slope of Koutecky-Levich plots. With these inherent features, we then fabricated the zinc-air battery with the Nf/PbMnO(x) catalyst and examine the performance for a practical application with air cathodes. (C) 2011 Elsevier Ltd. All rights reserved.
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