Ionic Liquid as Electrolyte in Photogalvanic Cell for Solar Energy Conversion and Storage

摘要

1-Butyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide ([csub4/sub3mpy] [NTfsub2/sub]) ionic liquid was used as electrolyte in photogalvanic cell. For photo-electrochemical conversion of solar energy to electrical energy, Rose Bengal, oxalic acid and ([csub4/sub3mpy] [NTfsub2/sub]) was used as a novel system. The photopotential and photocurrent was 670.0 mV and 61.2 µA, respectively. The power of the cell at power point was 8.06 µW. The low values of the electrical output could be attributed to the fast mobility of the cation and aggregation motives. There are also several reasons related to the structure of the ionic liquid. The observed conversion efficiency was 0.077% and fill factor was 0.196. The storage capacity of the cell was 109.0 min. The effect of different factors affecting on electrical output of the cell was studied.