Analysis of Electrode Reaction in Fluoride Shuttle Batteries by Atomic Force Microscopy -The Effects of Electrolyte Composition on the Battery Performance-

摘要

The applications of rechargeable battery are growing in various field for the efficient energy systems [1]. To expand the application of the battery, the developments of innovative rechargeable batteries which overcome current batteries are required. Fluoride shuttle batteries (FSBs) which is based on the shuttle of fluoride ions in electrolyte and fluorination/defluorination reactions on electrodes [2-3] contains higher theoretical energy densities than current rechargeable batteries. We have developed organic electrolyte and electrodes from metal fluorides for FSBs [2, 4-7]. However, the reaction mechanisms on the electrode in FSB are not understood. For the further developments of FSB, the analysis of the reaction at the interface between electrode and electrolyte were performed by using atomic force microscopy (AFM) [1, 8-9]. In the presentation, we will show the investigation on the effects of electrolyte composition on the reaction mechanisms.