Ag-Cu nanoalloyed film as a high-performance cathode electrocatalytic material for zinc-air battery

被引：0
作者：
Yimin Lei
Fuyi Chen
Yachao Jin
Zongwen Liu
机构：
[1] State Key Laboratory of Solidification Processing,
[2] Northwestern Polytechnical University,undefined
[3] School of Chemical and Biomolecular Engineering,undefined
[4] University of Sydney,undefined
来源：
Nanoscale Research Letters | 2015年 / 10卷
关键词：
Pulsed laser deposition; Alloyed Ag-Cu; Electrocatalyst; Zinc-air battery;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel Ag50Cu50 film electrocatalyst for oxygen reduction reaction (ORR) was prepared by pulsed laser deposition (PLD) method. The electrocatalyst actually is Ag-Cu alloyed nanoparticles embedded in amorphous Cu film, based on transmission electron microscopy (TEM) characterization. The rotating disk electrode (RDE) measurements provide evidence that the ORR proceed via a four-electron pathway on the electrocatalysts in alkaline solution. And it is much more efficient than pure Ag catalyst. The catalytic layer has maximum power density of 67 mW cm−2 and an acceptable cell voltage at 0.863 V when current densities increased up to 100 mA cm−2 in the Ag50Cu50-based primary zinc-air battery. The resulting rechargeable zinc-air battery exhibits low charge-discharge voltage polarization of 1.1 V at 20 mAcm−2 and high durability over 100 cycles in natural air.
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