The results indicate that the silver-modified silver electrode was a highly SERS-active substrate.And the probable reasons of the giant Surface Enhanced Raman Scattering effect are given.

• 实验表明,沉积有银纳米颗粒的粗糙银电极是一种新的高效SERS活性基底,分析并解释了覆银银电极能产生极强的增强效应的可能原因。