Preparation of Porous Ag@Ni Foam and Its Application for Non-aqueous Lithium-air Batteries

被引：0

作者：

Zhang Lei ^{[1
]}

Zhu Ding ^{[1
]}

Song Ming ^{[1
]}

Chen Yungui ^{[1
]}

Wang Xiaofei ^{[1
]}

机构：

[1] Sichuan Univ, Chengdu 610064, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2014年 / 43卷 / 10期

关键词：

Li-air battery; porous Ag@Ni foam; cell galvanic reaction; current collector; SILVER DENDRITES; SURFACE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel three-dimensional structured foam Ag@Ni composite material was prepared by improved cell galvanic reaction using Ni foam as substrate. X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) results show that the formed Ag particles are dendrite and homogenously precipitated on the surface of Ni foam. The as-prepared porous Ag@Ni foam was applied as the current collector of air cathode for the Li-air battery, and the electrochemical performances were evaluated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic discharge. The results show that the Ag@Ni foam-supported air cathode exhibits an enhanced catalytic effect for oxygen reduction reaction (ORR) and improved discharge performances. When the current density is 0.1 mA/cm(2), the discharge voltage platform increases from 2.66 to 2.73 V, and the capacity increases from 2000 to 2750 mAh/g. Furthermore, the improvement is more significant at higher current density.

引用

页码：2507 / 2510

页数：4

共 11 条

[1] THE FORMATION OF PATTERNS IN NONEQUILIBRIUM GROWTH [J].