化学法合成过氧化银及其电化学性能

Electrochemical performance of chemically prepared AgO

采用液相化学合成法,通过改变反应前驱体的浓度,制备出形貌均一的纳米过氧化银粉末。该方法条件温和,操作流程简单。采用XRD分析了样品的结构和组成,并利用SEM观察了形貌和精细结构。通过加入不同种类和含量的粘合剂,制成压成式银电极,并组装成Al-AgO电池进行放电测试。结果表明,在620 mA/cm2放电时,电池的平均电压可以达到1.591 V,电极的比容量达到345 mAh/g,具有较好的倍率性能和热稳定性。

A solution based chemical route was used to synthesize AgO nanocrystal by altering the concentration of precursors. The crystal structures and composition were analyzed by XRD, and the morphologies were characterized by SEM. Pressed silver electrode was manufactured by adding adhesive and a AI-AgO cell was constructed. When discharged at 620 mA/cm2, the average cell voltage is 1.591 V, and the discharge specific capacity is 345 mAh/g. The AgO electrode has good performance at high discharge rate and good stability at high temperature.