Highly
Stretchable Microsupercapacitor Arrays with
Honeycomb Structures for Integrated Wearable Electronic Systems
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Abstract
The
rapid development of portable and wearable electronics has
greatly increased the demand for energy storage devices with similar
physical properties and integration capability. This paper introduces
a honeycomb polydimethylsiloxane substrate for stretchable microsupercapacitor
(MSC) arrays, which enables facile integration with other electronics.
The honeycomb structure can accommodate a large deformation without
producing excessive strain in the MSCs and interconnects. The results
of this study show that such stretchable MSC arrays with single-walled
carbon nanotube electrodes demonstrate excellent rate capability and
power performance as well as electrochemical stability up to 150%
(zero prestrain) or 275% (β50% prestrain) stretching and under
excessive bending or twisting. The present stretchable MSC arrays
with honeycomb structures show high potential for integration with
other electronics, such as energy harvesters, power management circuits,
wireless charging circuits, and various sensors, encompassing a wide
range of wearable, bioimplantable electronic systems