 
 <prompt> Wetin store di energy of di capacitor? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Last but not least di electric double-layer capacitor (now Supercapacitors) dem bin invent. For 1957 H. Becker develop "Low voltage electrolytic capacitor with porous carbon electrodes". E believe say di energy dey stored as charge for di carbon pores wey e use for im capacitor like for di pores of di etched foils of electrolytic capacitors. Because di double layer mechanism no dey known by am dat time, e write for di patent: "It no dey known exactly wetin dey happen for di component if e dey used for energy storage, but e dey lead to extremely high capacity.".``` 