The First Battery-Free Electric Bicycle: Pi-Pop

French entrepreneur Adrien Lelievre, the director of STEE Company, has developed and patented an electric bicycle called Pi-Pop, which utilizes supercapacitors instead of lithium batteries. Supercapacitors can rapidly store and release energy when needed. In the case of the bicycle, this means storing energy when the rider pedals or brakes and using it for more demanding actions such as uphill riding. Supercapacitors accumulate energy through an electrostatic method, whereas lithium batteries store energy through a chemical reaction.