Micro-supercapacitors

A Penn State-led research team developed a standalone system to monitor nitrogen dioxide in exhaled breath and in the environment. Fabricated from the same nanocomposite material, the self-powered system stretches to adhere to skin or clothes. Credit: Provided by Huanyu "Larry" Cheng/Penn State.
New Sensor System Uses Human Movement to Monitor Air Quality and Breath
Using fallen leaves to produce eco-friendly micro-supercapacitors
A self-powered stretchable micro-supercapacitor system for wearable health-monitoring and diagnostic devices
If you need more energy storage just print it with MXene ink
Integrated energy storage inside a microchip
UCLA researchers develop new technique to scale up production of graphene micro-supercapacitors