title: Ag-Cu nanoalloyed film as a high-performance cathode electrocatalytic material for zinc-air battery.
abstract: 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.
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, 127 Youyi Road, Xi'an, Shaanxi 710072 China.
authors.forename: Yimin
authors.initials: Y
authors.lastname: Lei
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, 127 Youyi Road, Xi'an, Shaanxi 710072 China.
authors.forename: Fuyi
authors.initials: F
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, 127 Youyi Road, Xi'an, Shaanxi 710072 China.
authors.forename: Yachao
authors.initials: Y
authors.lastname: Jin
authors.affiliation: School of Chemical and Biomolecular Engineering, University of Sydney, Chemical Engineering Building, Sydney, NSW 2006 Australia.
authors.forename: Zongwen
authors.initials: Z
authors.lastname: Liu
keywords: Alloyed Ag-Cu; Electrocatalyst; Pulsed laser deposition; Zinc-air battery