锌银蓄电池中镀银泡沫镍的电化学性能研究  

Investigation on Electrochemical Properties of Silver-Coated Nickel Foam in Silver-Zinc Storage Batteries

作　　者：张辉[1] 朱立群[1] 项民[1] 

机构地区：[1]北京航空航天大学,北京100083

出　　处：《稀有金属材料与工程》2008年第1期89-93,共5页Rare Metal Materials and Engineering

摘　　要：采用电沉积法制备镀银泡沫镍集流体以替代银网,通过SEM,XRD及电化学测试等手段对其进行表征及性能分析。结果表明,银颗粒以块状结晶在泡沫镍上,镀层改善了以泡沫镍为集流体的电化学行为。尤其是沉积电流密度为3mA·cm-2时,镀层致密均匀,且镀银层在保证锌电极反应活性的同时,提高了锌电极的耐蚀性,以此制成模拟锌银电池,其高电流密度的放电电压平稳,具有良好的电性能。The current collector of silver-coated nickel foams were prepared by electrodeposition in order to substitute silver grid. By SEM, XRD, electrochemical and other techniques, the silver-coated nickel foams were characterized and analyzed. The results showed that massive silver crystal grains were deposited on nickel foam, and the silver coating improved the electrochemical behavior of zinc electrode with the current collector of nickel foam. Especially, when the current density of deposition was 3 mA·cm^-2, the silver coating was dense and uniform, and enhanced the property of corrosion resistance at the assurance of the electrochemical reaction active for zinc electrode. Experimental data indicated that simulated silver-zinc battery made of such zinc electrode with a current collector of silver-coated nickel foam had stable discharging voltage and excellent electric performance at discharging rate of high current density.

关 键 词：镀银泡沫镍 集流体 锌电极 锌银蓄电池 

分 类 号：TM912[电气工程—电力电子与电力传动]