An international team of researchers has come together and invented a stretchable system with the potential to harvest energy from human movement, according to Graphene Info. While still not fully realized, the potential of this discovery is great, with possible uses such as powering wearable health-monitoring devices through human breathing and motion.
Modern batteries and super-capacitators used with these wearable devices have many shortcomings in comparison to this graphene-enhanced version, including but not limited to having low energy density and limited stretchability.
Similar to batteries, but not identical, super-capacitators have the ability to charge and discharge quickly, having a smaller footprint and higher power density.
Hanyu Cheng; a Professor at Penn State said: “By using an island-bridge design when connecting cells, the micro-supercapacitor arrays displayed increased stretchability and allowed for adjustable voltage outputs. This allows the system to be reversibly stretched up to 100%.”