Electrochemical behavior and reduction mechanism of high valence silver oxide in alkaline solution

The electrochemical properties of high-valence silver oxide (Ag3O4) in alkaline solution were investigated and the reduction mechanism was proposed. It was discovered that the reduction process of Ag3O4 was complicated, and could be reduced through the series of Ag3O4 -> AgO -> Ag2O -> Ag at slow rate; conversely, it could be directly reduced to Ag2O at rapid rate. In addition, this material presents not only high capacity but also prominent electrochemical performance at very high discharge rate. (c) 2006 The Electrochemical Society.