Journal
ACS NANO
Volume 11, Issue 2, Pages 2066-2074Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.6b08262
Keywords
stretchable; self-healable; multifunctional; fiber springs; supercapacitor
Categories
Funding
- National Natural Science Foundation of China [11374110, 11674113, 51371085, 11304106, 11204093]
- Analysis and Testing Center of HUST
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In large-scale applications of portable and wearable electronic devices, high-performance supercapacitors are important energy supply sources. However, since the reliability and stability of supercapacitors are generally destroyed by mechanical deformation and damage during practical applications, the stretchability and self-healability must be exploited for the supercapacitors. Preparing the highly stretchable and self-healable electrodes is still a challenge. Here, we report reduced graphene oxide fiber based springs as electrodes for stretchable and self-healable supercapacitors. The fiber springs (diameters of 295 gm) are thick enough to reconnect the broken electrodes accurately by visual inspection. By wrapping fiber springs with a self-healing polymer outer shell, a stretchable and self-healable supercapacitor is successfully realized. The supercapacitor has 82.4% capacitance retention after a large stretch (100%), and 54.2% capacitance retention after the third healing. This work gave an essential strategy for designing and fabricating stretchable and self-healable supercapacitors in next-generation multifunctional electronic devices.
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