Abstract: Thin-layer transmission spectroelectrochemistry provides an in-situ analytical method. Based on previous research, the authors design a new type of thin-layer spectroelectrochemical cell for long optical path length. The construction of the cell is considered to be simplel; it's operation convinent and sensitivity high, it can be widely used. The optical and electrochemical responses of the cell is measured by the ferrocyanide system, it's property is good and reliable.

Key words: Thin-layer spectroelectrochermical cell, Spectroelectrochemistry, Spectroelectrochimical cell of new type