Journal
JOURNAL OF POWER SOURCES
Volume 440, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2019.227150
Keywords
Supercapacitor; Stretchability; Carbon nanotube; MXene
Funding
- National Natural Science Foundation of China [51673117, 21805193]
- Science and Technology Innovation Commission of Shenzhen [JCYJ20150529164656097, JSGG201602 26201833790, JCYJ20160520163535684, JCYJ20160422144936457, JCYJ20170818093832350, JCYJ20170818112409808, JSGG201708 24112840518]
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Flexible energy storage electronics are gaining increasing attention in recent years, but challenge still remains in obtaining fiber-shaped devices with both high specific capacitance to provide a high energy density and mechanical stretchability/flexibility to be able to integrate under extensive bending, stretching and twisting. Here, an all-in-one fiber high performance stretchable supercapacitor is constructed based on high performance beadlike NiCo2S4@carbon nanotube and Ti3C2Tx@N/O enriched carbon cloth threads electrodes. The assembled stretchable supercapacitor demonstrates a voltage output of 1.5 V and a specific areal capacitance of 559.3 mF cm(-2), resulting in a high energy density of 174.78 mu Wh cm(-2), outperforming most of previously reported stretchable fiber-shaped supercapacitors. Moreover, the high energy storage performances are well preserved under repeatedly stretching and bending. This unique design opens up a new direction in the development of stretchable fiber-shaped energy storage devices.
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