Supercapacitors have the superb ability to capture and store energy. Researchers can use different materials and fabrication methods to make them flexible, thin and appropriate for use in wearable or implantable electronics, like smart watches or pacemakers, but those approaches tend to be intricate and costly. Now, however, a team from Jilin University in China has developed a kind of all-in-one adhesive electrode that solves one of the major issues facing advancing flexible 2D supercapacitors—making the components work synergistically.