Graphene generators could let you recharge a phone with your breath

 作者:窦仰娟     |      日期:2019-03-04 11:06:06
DON’T you hate it when your phone battery runs out? In the future, you might be able to give it mouth-to-mouth, thanks to a technique that harvests electricity from moisture in air. Water droplets might seem an unlikely source of energy, but they can hold a form of static electricity called hygroelectricity, which is thought to be the source of the charge that causes lightning. This charge can be transferred from droplets to other tiny particles, such as dust. It has previously been shown that this energy can be harvested by structures made of graphene,