DMSO is used in farad level and super capacity capacitor—electrolyte of liquid electric double layer capacitor. At present, the capacitor has only microfarad capacity, and can achieve one to a hundred farad. Such as, Japanese capacitor (3～5V10F) and American capacity (1.6V 100F) are used as energy storage elements in solar energy power supply system, electronic computer, information protect power and memory cell for Robot. DMSO is greatly used in electronic component and integrated circuit cleaning, and has once cleared functions fro organics, inorganics and polymers. It is innocuous, flavourless and easy to reclaim.