Abstract
Electrochromism (EC) is defined as reversible color change induced by electrochemical reaction, which is applicable to electronic paper and smart window. We have reported a silver deposition-based EC cell which showed reversible optical changes between clear transparent, silver-mirror, and black state. The surface structure of the electrode is considered to be a key factor on the difference in the optical states of this EC cell. In this research, we investigated the effects of the surface structure of the electrode on morphology of the deposited silver and its optical states.