In the future, this paper-thin metal could replace your phone charger. This is a kinetic generator wired to a device charger known as Feng. Its design goes into our shoe and is pressure activated.
Every bit of pressure placed on it converts into electricity that is directly stored in your device’s battery. The Feng was developed by Michigan state researchers. It stands for Ferroelectret nanogenerator. Its system keeps your phone perpetually charged while reducing the need for non-renewable energy. Other kinetic generators are much bulkier than the Feng. So, it’s a major improvement for charging devices.
Also look for the DIY from Piezoelectric Shoes: Charge Your Mobile Device by Walking.